./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix035.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix035.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix035.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix035.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:33:07,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:33:07,863 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:33:07,866 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:33:07,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:33:07,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:33:07,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:33:07,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:33:07,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:33:07,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:33:07,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:33:07,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:33:07,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:33:07,898 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:33:07,898 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:33:07,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:33:07,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:33:07,899 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:33:07,899 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:33:07,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:33:07,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:33:07,900 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:33:07,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:33:07,901 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:33:07,901 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:33:07,901 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:33:07,901 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:33:07,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:33:07,902 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:33:07,902 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:33:07,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:33:07,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:33:07,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:33:07,903 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:33:07,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:33:07,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:33:07,904 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:33:07,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:33:07,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:33:07,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:33:07,905 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:33:07,906 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:33:07,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:33:07,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:33:08,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:33:08,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:33:08,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:33:08,165 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:33:08,165 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:33:08,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix035.oepc.yml/witness.yml [2024-06-28 01:33:08,371 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:33:08,371 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:33:08,373 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix035.oepc.i [2024-06-28 01:33:09,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:33:09,531 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:33:09,531 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix035.oepc.i [2024-06-28 01:33:09,546 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c4a7aba5/99e091f9e2d148ea87133fa6f87a3fa4/FLAGbba8a6695 [2024-06-28 01:33:09,604 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c4a7aba5/99e091f9e2d148ea87133fa6f87a3fa4 [2024-06-28 01:33:09,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:33:09,607 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:33:09,617 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:33:09,617 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:33:09,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:33:09,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:33:08" (1/2) ... [2024-06-28 01:33:09,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ba6994 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:33:09, skipping insertion in model container [2024-06-28 01:33:09,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:33:08" (1/2) ... [2024-06-28 01:33:09,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5e18d690 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:33:09, skipping insertion in model container [2024-06-28 01:33:09,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:33:09" (2/2) ... [2024-06-28 01:33:09,626 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ba6994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:09, skipping insertion in model container [2024-06-28 01:33:09,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:33:09" (2/2) ... [2024-06-28 01:33:09,627 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:33:09,693 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:33:09,694 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 01:33:09,694 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 01:33:09,694 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1)) [2024-06-28 01:33:09,694 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:33:09,695 INFO L106 edCorrectnessWitness]: ghost_update [L846-L846] multithreaded = 1; [2024-06-28 01:33:09,718 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:33:09,881 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/mix035.oepc.i[945,958] [2024-06-28 01:33:10,035 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:33:10,044 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:33:10,078 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/mix035.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:33:10,167 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:33:10,195 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:33:10,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10 WrapperNode [2024-06-28 01:33:10,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:33:10,197 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:33:10,197 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:33:10,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:33:10,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,229 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,262 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2024-06-28 01:33:10,262 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:33:10,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:33:10,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:33:10,265 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:33:10,273 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,289 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,303 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]. [2024-06-28 01:33:10,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,316 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,336 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:33:10,338 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:33:10,338 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:33:10,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:33:10,339 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (1/1) ... [2024-06-28 01:33:10,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:33:10,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:33:10,362 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) [2024-06-28 01:33:10,372 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 [2024-06-28 01:33:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:33:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:33:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:33:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:33:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:33:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:33:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:33:10,392 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:33:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:33:10,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:33:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:33:10,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:33:10,394 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:33:10,524 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:33:10,527 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:33:10,839 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:33:10,839 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:33:10,968 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:33:10,968 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:33:10,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:33:10 BoogieIcfgContainer [2024-06-28 01:33:10,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:33:10,970 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:33:10,970 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:33:10,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:33:10,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:33:08" (1/4) ... [2024-06-28 01:33:10,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788709 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:33:10, skipping insertion in model container [2024-06-28 01:33:10,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:33:09" (2/4) ... [2024-06-28 01:33:10,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:33:10, skipping insertion in model container [2024-06-28 01:33:10,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:33:10" (3/4) ... [2024-06-28 01:33:10,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@788709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:33:10, skipping insertion in model container [2024-06-28 01:33:10,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:33:10" (4/4) ... [2024-06-28 01:33:10,975 INFO L112 eAbstractionObserver]: Analyzing ICFG mix035.oepc.i [2024-06-28 01:33:10,988 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:33:10,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:33:10,988 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:33:11,036 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:33:11,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:33:11,095 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:33:11,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:33:11,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-28 01:33:11,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:33:11,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:33:11,118 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:33:11,123 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;@4d11063b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:33:11,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:33:11,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:33:11,130 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:33:11,130 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:33:11,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:11,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:33:11,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:11,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:11,137 INFO L85 PathProgramCache]: Analyzing trace with hash 363555772, now seen corresponding path program 1 times [2024-06-28 01:33:11,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:11,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019199845] [2024-06-28 01:33:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:11,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:12,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:12,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019199845] [2024-06-28 01:33:12,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019199845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:12,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:12,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:33:12,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487853696] [2024-06-28 01:33:12,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:12,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:33:12,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:12,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:33:12,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:33:12,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 01:33:12,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:12,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:12,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 01:33:12,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:13,217 INFO L124 PetriNetUnfolderBase]: 3659/5970 cut-off events. [2024-06-28 01:33:13,218 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-28 01:33:13,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11320 conditions, 5970 events. 3659/5970 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 38191 event pairs, 2782 based on Foata normal form. 181/5628 useless extension candidates. Maximal degree in co-relation 11308. Up to 5259 conditions per place. [2024-06-28 01:33:13,248 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 41 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:33:13,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 225 flow [2024-06-28 01:33:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:33:13,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:33:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-28 01:33:13,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-28 01:33:13,259 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 99 transitions. [2024-06-28 01:33:13,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 225 flow [2024-06-28 01:33:13,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:13,263 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 01:33:13,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 01:33:13,267 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:33:13,267 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 01:33:13,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:13,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:13,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:33:13,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:33:13,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:13,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:13,269 INFO L85 PathProgramCache]: Analyzing trace with hash 363556668, now seen corresponding path program 1 times [2024-06-28 01:33:13,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:13,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60017176] [2024-06-28 01:33:13,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:13,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:13,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60017176] [2024-06-28 01:33:13,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60017176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:13,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:13,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:33:13,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884216836] [2024-06-28 01:33:13,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:13,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:33:13,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:13,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:33:13,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:33:13,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2024-06-28 01:33:13,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:13,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:13,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2024-06-28 01:33:13,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:13,530 INFO L124 PetriNetUnfolderBase]: 932/1798 cut-off events. [2024-06-28 01:33:13,530 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:33:13,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3482 conditions, 1798 events. 932/1798 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11969 event pairs, 418 based on Foata normal form. 0/1685 useless extension candidates. Maximal degree in co-relation 3470. Up to 1189 conditions per place. [2024-06-28 01:33:13,538 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 35 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-06-28 01:33:13,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 234 flow [2024-06-28 01:33:13,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:33:13,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:33:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-28 01:33:13,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-06-28 01:33:13,539 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 3 states and 113 transitions. [2024-06-28 01:33:13,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 234 flow [2024-06-28 01:33:13,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:13,541 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 124 flow [2024-06-28 01:33:13,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 01:33:13,542 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:33:13,542 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 124 flow [2024-06-28 01:33:13,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:13,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:13,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:13,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:33:13,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:13,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1484783226, now seen corresponding path program 1 times [2024-06-28 01:33:13,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:13,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061943393] [2024-06-28 01:33:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:13,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:14,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:14,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061943393] [2024-06-28 01:33:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061943393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:14,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:14,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:33:14,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884328335] [2024-06-28 01:33:14,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:14,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:33:14,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:14,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:33:14,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:33:14,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 01:33:14,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:14,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:14,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 01:33:14,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:14,779 INFO L124 PetriNetUnfolderBase]: 3008/4943 cut-off events. [2024-06-28 01:33:14,779 INFO L125 PetriNetUnfolderBase]: For 1232/1232 co-relation queries the response was YES. [2024-06-28 01:33:14,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10533 conditions, 4943 events. 3008/4943 cut-off events. For 1232/1232 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 30688 event pairs, 1824 based on Foata normal form. 3/4734 useless extension candidates. Maximal degree in co-relation 10520. Up to 4322 conditions per place. [2024-06-28 01:33:14,798 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 49 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2024-06-28 01:33:14,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 314 flow [2024-06-28 01:33:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:33:14,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:33:14,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-28 01:33:14,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640625 [2024-06-28 01:33:14,800 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 124 flow. Second operand 4 states and 123 transitions. [2024-06-28 01:33:14,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 314 flow [2024-06-28 01:33:14,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:14,802 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 185 flow [2024-06-28 01:33:14,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-28 01:33:14,803 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 01:33:14,803 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 185 flow [2024-06-28 01:33:14,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:14,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:14,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:14,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:33:14,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:14,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:14,805 INFO L85 PathProgramCache]: Analyzing trace with hash 947578169, now seen corresponding path program 1 times [2024-06-28 01:33:14,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:14,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696223949] [2024-06-28 01:33:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:14,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:16,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:16,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696223949] [2024-06-28 01:33:16,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696223949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:16,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:16,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:33:16,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072398630] [2024-06-28 01:33:16,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:16,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:33:16,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:16,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:33:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:33:16,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:33:16,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:16,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:16,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:33:16,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:16,933 INFO L124 PetriNetUnfolderBase]: 3131/4798 cut-off events. [2024-06-28 01:33:16,934 INFO L125 PetriNetUnfolderBase]: For 2201/2201 co-relation queries the response was YES. [2024-06-28 01:33:16,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11521 conditions, 4798 events. 3131/4798 cut-off events. For 2201/2201 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 27628 event pairs, 1223 based on Foata normal form. 3/4720 useless extension candidates. Maximal degree in co-relation 11506. Up to 4448 conditions per place. [2024-06-28 01:33:16,952 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 69 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-28 01:33:16,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 102 transitions, 523 flow [2024-06-28 01:33:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-28 01:33:16,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6076388888888888 [2024-06-28 01:33:16,954 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 185 flow. Second operand 6 states and 175 transitions. [2024-06-28 01:33:16,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 102 transitions, 523 flow [2024-06-28 01:33:16,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 102 transitions, 506 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:16,957 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 303 flow [2024-06-28 01:33:16,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-06-28 01:33:16,958 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-28 01:33:16,958 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 303 flow [2024-06-28 01:33:16,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:16,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:16,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:16,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:33:16,959 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:16,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:16,959 INFO L85 PathProgramCache]: Analyzing trace with hash -689846514, now seen corresponding path program 1 times [2024-06-28 01:33:16,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:16,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638793725] [2024-06-28 01:33:16,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:16,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:18,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:18,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638793725] [2024-06-28 01:33:18,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638793725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:18,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:18,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:18,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138218298] [2024-06-28 01:33:18,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:18,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:18,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:18,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:18,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:33:18,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 303 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:18,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:18,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:33:18,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:19,226 INFO L124 PetriNetUnfolderBase]: 3122/4781 cut-off events. [2024-06-28 01:33:19,226 INFO L125 PetriNetUnfolderBase]: For 4621/4621 co-relation queries the response was YES. [2024-06-28 01:33:19,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12862 conditions, 4781 events. 3122/4781 cut-off events. For 4621/4621 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 27517 event pairs, 922 based on Foata normal form. 6/4706 useless extension candidates. Maximal degree in co-relation 12843. Up to 4391 conditions per place. [2024-06-28 01:33:19,257 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 76 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2024-06-28 01:33:19,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 629 flow [2024-06-28 01:33:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:19,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-06-28 01:33:19,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5922619047619048 [2024-06-28 01:33:19,259 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 303 flow. Second operand 7 states and 199 transitions. [2024-06-28 01:33:19,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 629 flow [2024-06-28 01:33:19,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 111 transitions, 606 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:19,268 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 345 flow [2024-06-28 01:33:19,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=345, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-28 01:33:19,270 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 01:33:19,274 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 345 flow [2024-06-28 01:33:19,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:19,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:19,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:19,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:33:19,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:19,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1415999150, now seen corresponding path program 1 times [2024-06-28 01:33:19,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:19,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820287280] [2024-06-28 01:33:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:19,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:19,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:19,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820287280] [2024-06-28 01:33:19,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820287280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:19,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:19,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:33:19,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736587471] [2024-06-28 01:33:19,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:19,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:33:19,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:33:19,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:33:19,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:19,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:19,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:19,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:19,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:20,586 INFO L124 PetriNetUnfolderBase]: 3635/6021 cut-off events. [2024-06-28 01:33:20,586 INFO L125 PetriNetUnfolderBase]: For 7593/7593 co-relation queries the response was YES. [2024-06-28 01:33:20,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15985 conditions, 6021 events. 3635/6021 cut-off events. For 7593/7593 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38484 event pairs, 1536 based on Foata normal form. 4/5865 useless extension candidates. Maximal degree in co-relation 15963. Up to 5186 conditions per place. [2024-06-28 01:33:20,625 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 65 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2024-06-28 01:33:20,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 559 flow [2024-06-28 01:33:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:33:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:33:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 01:33:20,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-28 01:33:20,627 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 345 flow. Second operand 5 states and 124 transitions. [2024-06-28 01:33:20,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 559 flow [2024-06-28 01:33:20,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 504 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:20,634 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 343 flow [2024-06-28 01:33:20,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-06-28 01:33:20,636 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 01:33:20,637 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 343 flow [2024-06-28 01:33:20,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:20,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:20,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:20,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:33:20,637 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:20,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:20,638 INFO L85 PathProgramCache]: Analyzing trace with hash 722838032, now seen corresponding path program 1 times [2024-06-28 01:33:20,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:20,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121079043] [2024-06-28 01:33:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:20,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:21,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:21,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121079043] [2024-06-28 01:33:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121079043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:21,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:21,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612343801] [2024-06-28 01:33:21,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:21,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:21,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:21,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:21,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:21,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:21,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:21,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:21,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:22,190 INFO L124 PetriNetUnfolderBase]: 3714/6113 cut-off events. [2024-06-28 01:33:22,191 INFO L125 PetriNetUnfolderBase]: For 9791/9791 co-relation queries the response was YES. [2024-06-28 01:33:22,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17158 conditions, 6113 events. 3714/6113 cut-off events. For 9791/9791 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 38421 event pairs, 1282 based on Foata normal form. 4/5928 useless extension candidates. Maximal degree in co-relation 17134. Up to 5226 conditions per place. [2024-06-28 01:33:22,221 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 82 selfloop transitions, 18 changer transitions 0/110 dead transitions. [2024-06-28 01:33:22,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 110 transitions, 713 flow [2024-06-28 01:33:22,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 01:33:22,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2024-06-28 01:33:22,223 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 343 flow. Second operand 6 states and 155 transitions. [2024-06-28 01:33:22,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 110 transitions, 713 flow [2024-06-28 01:33:22,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 674 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:22,228 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 452 flow [2024-06-28 01:33:22,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2024-06-28 01:33:22,229 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-06-28 01:33:22,230 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 452 flow [2024-06-28 01:33:22,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:22,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:22,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:22,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:33:22,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:22,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:22,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1102332902, now seen corresponding path program 2 times [2024-06-28 01:33:22,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:22,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988761532] [2024-06-28 01:33:22,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:22,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:22,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:22,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988761532] [2024-06-28 01:33:22,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988761532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:22,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:22,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:22,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658621632] [2024-06-28 01:33:22,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:22,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:22,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:22,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:22,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:23,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:23,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 452 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:23,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:23,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:23,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:23,758 INFO L124 PetriNetUnfolderBase]: 3704/6127 cut-off events. [2024-06-28 01:33:23,758 INFO L125 PetriNetUnfolderBase]: For 13482/13482 co-relation queries the response was YES. [2024-06-28 01:33:23,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18753 conditions, 6127 events. 3704/6127 cut-off events. For 13482/13482 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 39133 event pairs, 1497 based on Foata normal form. 4/5966 useless extension candidates. Maximal degree in co-relation 18726. Up to 5273 conditions per place. [2024-06-28 01:33:23,792 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 79 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-28 01:33:23,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 102 transitions, 698 flow [2024-06-28 01:33:23,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:23,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 01:33:23,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 01:33:23,795 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 452 flow. Second operand 6 states and 146 transitions. [2024-06-28 01:33:23,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 102 transitions, 698 flow [2024-06-28 01:33:23,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 102 transitions, 674 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-28 01:33:23,806 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 462 flow [2024-06-28 01:33:23,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=462, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-06-28 01:33:23,807 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-28 01:33:23,807 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 462 flow [2024-06-28 01:33:23,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:23,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:23,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:23,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:33:23,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:23,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:23,808 INFO L85 PathProgramCache]: Analyzing trace with hash 933023409, now seen corresponding path program 1 times [2024-06-28 01:33:23,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:23,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16326869] [2024-06-28 01:33:23,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:23,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:24,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16326869] [2024-06-28 01:33:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16326869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:24,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:24,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632615931] [2024-06-28 01:33:24,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:24,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:24,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:24,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:24,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:24,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:24,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 462 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:24,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:24,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:24,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:25,711 INFO L124 PetriNetUnfolderBase]: 3798/6238 cut-off events. [2024-06-28 01:33:25,712 INFO L125 PetriNetUnfolderBase]: For 15262/15262 co-relation queries the response was YES. [2024-06-28 01:33:25,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19553 conditions, 6238 events. 3798/6238 cut-off events. For 15262/15262 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 38991 event pairs, 1311 based on Foata normal form. 4/6044 useless extension candidates. Maximal degree in co-relation 19523. Up to 5380 conditions per place. [2024-06-28 01:33:25,742 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 97 selfloop transitions, 17 changer transitions 0/124 dead transitions. [2024-06-28 01:33:25,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 884 flow [2024-06-28 01:33:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:25,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:33:25,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-28 01:33:25,744 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 462 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:33:25,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 884 flow [2024-06-28 01:33:25,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 124 transitions, 848 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:25,755 INFO L231 Difference]: Finished difference. Result has 85 places, 89 transitions, 595 flow [2024-06-28 01:33:25,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=595, PETRI_PLACES=85, PETRI_TRANSITIONS=89} [2024-06-28 01:33:25,756 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-28 01:33:25,756 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 89 transitions, 595 flow [2024-06-28 01:33:25,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:25,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:25,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:25,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:33:25,757 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:25,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash 933143379, now seen corresponding path program 2 times [2024-06-28 01:33:25,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:25,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5649525] [2024-06-28 01:33:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:25,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:26,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:26,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:26,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5649525] [2024-06-28 01:33:26,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5649525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:26,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:26,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:26,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855158855] [2024-06-28 01:33:26,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:26,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:26,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:26,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:26,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:26,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:26,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 89 transitions, 595 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:26,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:26,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:26,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:27,464 INFO L124 PetriNetUnfolderBase]: 3933/6436 cut-off events. [2024-06-28 01:33:27,465 INFO L125 PetriNetUnfolderBase]: For 20266/20266 co-relation queries the response was YES. [2024-06-28 01:33:27,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21615 conditions, 6436 events. 3933/6436 cut-off events. For 20266/20266 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 40206 event pairs, 1245 based on Foata normal form. 4/6241 useless extension candidates. Maximal degree in co-relation 21582. Up to 5312 conditions per place. [2024-06-28 01:33:27,494 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 93 selfloop transitions, 37 changer transitions 0/140 dead transitions. [2024-06-28 01:33:27,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 140 transitions, 1131 flow [2024-06-28 01:33:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:27,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:33:27,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 01:33:27,496 INFO L175 Difference]: Start difference. First operand has 85 places, 89 transitions, 595 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:33:27,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 140 transitions, 1131 flow [2024-06-28 01:33:27,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 140 transitions, 1091 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:27,509 INFO L231 Difference]: Finished difference. Result has 89 places, 98 transitions, 739 flow [2024-06-28 01:33:27,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=739, PETRI_PLACES=89, PETRI_TRANSITIONS=98} [2024-06-28 01:33:27,510 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2024-06-28 01:33:27,510 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 739 flow [2024-06-28 01:33:27,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:27,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:27,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:27,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:33:27,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:27,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:27,511 INFO L85 PathProgramCache]: Analyzing trace with hash -192779919, now seen corresponding path program 3 times [2024-06-28 01:33:27,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:27,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532333354] [2024-06-28 01:33:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:27,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:28,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:28,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532333354] [2024-06-28 01:33:28,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532333354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:28,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:28,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:28,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967033407] [2024-06-28 01:33:28,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:28,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:28,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:28,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:28,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:28,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:28,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 739 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:28,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:28,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:28,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:29,242 INFO L124 PetriNetUnfolderBase]: 3923/6466 cut-off events. [2024-06-28 01:33:29,243 INFO L125 PetriNetUnfolderBase]: For 25846/25846 co-relation queries the response was YES. [2024-06-28 01:33:29,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22655 conditions, 6466 events. 3923/6466 cut-off events. For 25846/25846 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 41214 event pairs, 1523 based on Foata normal form. 4/6289 useless extension candidates. Maximal degree in co-relation 22621. Up to 5536 conditions per place. [2024-06-28 01:33:29,316 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 102 selfloop transitions, 18 changer transitions 0/130 dead transitions. [2024-06-28 01:33:29,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 130 transitions, 1065 flow [2024-06-28 01:33:29,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:29,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:29,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:33:29,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-28 01:33:29,333 INFO L175 Difference]: Start difference. First operand has 89 places, 98 transitions, 739 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:33:29,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 130 transitions, 1065 flow [2024-06-28 01:33:29,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 130 transitions, 1010 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:29,362 INFO L231 Difference]: Finished difference. Result has 95 places, 98 transitions, 728 flow [2024-06-28 01:33:29,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=728, PETRI_PLACES=95, PETRI_TRANSITIONS=98} [2024-06-28 01:33:29,362 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-28 01:33:29,362 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 98 transitions, 728 flow [2024-06-28 01:33:29,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:29,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:29,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:29,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:33:29,364 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:29,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:29,364 INFO L85 PathProgramCache]: Analyzing trace with hash -640789983, now seen corresponding path program 4 times [2024-06-28 01:33:29,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:29,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991654278] [2024-06-28 01:33:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:29,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:29,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:29,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991654278] [2024-06-28 01:33:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991654278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:29,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:29,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:29,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091609150] [2024-06-28 01:33:29,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:29,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:29,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:29,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:29,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:30,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:30,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 98 transitions, 728 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:30,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:30,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:30,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:31,086 INFO L124 PetriNetUnfolderBase]: 4132/6790 cut-off events. [2024-06-28 01:33:31,087 INFO L125 PetriNetUnfolderBase]: For 28750/28758 co-relation queries the response was YES. [2024-06-28 01:33:31,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24176 conditions, 6790 events. 4132/6790 cut-off events. For 28750/28758 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 43234 event pairs, 1497 based on Foata normal form. 8/6616 useless extension candidates. Maximal degree in co-relation 24140. Up to 5708 conditions per place. [2024-06-28 01:33:31,119 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 136 selfloop transitions, 50 changer transitions 0/196 dead transitions. [2024-06-28 01:33:31,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 196 transitions, 1706 flow [2024-06-28 01:33:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-28 01:33:31,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-28 01:33:31,121 INFO L175 Difference]: Start difference. First operand has 95 places, 98 transitions, 728 flow. Second operand 10 states and 249 transitions. [2024-06-28 01:33:31,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 196 transitions, 1706 flow [2024-06-28 01:33:31,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 196 transitions, 1628 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:31,150 INFO L231 Difference]: Finished difference. Result has 101 places, 141 transitions, 1243 flow [2024-06-28 01:33:31,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1243, PETRI_PLACES=101, PETRI_TRANSITIONS=141} [2024-06-28 01:33:31,151 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-28 01:33:31,151 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 141 transitions, 1243 flow [2024-06-28 01:33:31,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:31,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:31,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:31,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:33:31,151 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:31,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:31,152 INFO L85 PathProgramCache]: Analyzing trace with hash 739628013, now seen corresponding path program 5 times [2024-06-28 01:33:31,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:31,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818549730] [2024-06-28 01:33:31,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:31,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:31,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:31,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818549730] [2024-06-28 01:33:31,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818549730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:31,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:31,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:31,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981249483] [2024-06-28 01:33:31,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:31,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:31,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:31,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:31,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 141 transitions, 1243 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:31,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:31,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:31,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:32,910 INFO L124 PetriNetUnfolderBase]: 4304/7092 cut-off events. [2024-06-28 01:33:32,910 INFO L125 PetriNetUnfolderBase]: For 36990/36998 co-relation queries the response was YES. [2024-06-28 01:33:32,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27916 conditions, 7092 events. 4304/7092 cut-off events. For 36990/36998 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 45585 event pairs, 1506 based on Foata normal form. 10/6907 useless extension candidates. Maximal degree in co-relation 27876. Up to 5909 conditions per place. [2024-06-28 01:33:32,952 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 137 selfloop transitions, 79 changer transitions 0/226 dead transitions. [2024-06-28 01:33:32,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 226 transitions, 2328 flow [2024-06-28 01:33:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:33:32,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 01:33:32,956 INFO L175 Difference]: Start difference. First operand has 101 places, 141 transitions, 1243 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:33:32,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 226 transitions, 2328 flow [2024-06-28 01:33:32,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 226 transitions, 2218 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-06-28 01:33:32,996 INFO L231 Difference]: Finished difference. Result has 110 places, 182 transitions, 1916 flow [2024-06-28 01:33:32,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1916, PETRI_PLACES=110, PETRI_TRANSITIONS=182} [2024-06-28 01:33:32,997 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-28 01:33:32,997 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 182 transitions, 1916 flow [2024-06-28 01:33:32,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:32,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:32,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:32,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:33:32,997 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:32,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:32,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1139150314, now seen corresponding path program 1 times [2024-06-28 01:33:32,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:32,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99610070] [2024-06-28 01:33:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:32,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:34,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:34,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99610070] [2024-06-28 01:33:34,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99610070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:34,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:34,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:34,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941334706] [2024-06-28 01:33:34,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:34,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:34,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:34,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:34,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:34,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:33:34,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 182 transitions, 1916 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:34,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:34,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:33:34,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:35,484 INFO L124 PetriNetUnfolderBase]: 5316/8642 cut-off events. [2024-06-28 01:33:35,485 INFO L125 PetriNetUnfolderBase]: For 47948/47948 co-relation queries the response was YES. [2024-06-28 01:33:35,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34335 conditions, 8642 events. 5316/8642 cut-off events. For 47948/47948 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 55391 event pairs, 1949 based on Foata normal form. 4/8393 useless extension candidates. Maximal degree in co-relation 34290. Up to 7472 conditions per place. [2024-06-28 01:33:35,538 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 194 selfloop transitions, 21 changer transitions 0/224 dead transitions. [2024-06-28 01:33:35,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 224 transitions, 2558 flow [2024-06-28 01:33:35,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:33:35,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-28 01:33:35,539 INFO L175 Difference]: Start difference. First operand has 110 places, 182 transitions, 1916 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:33:35,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 224 transitions, 2558 flow [2024-06-28 01:33:35,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 224 transitions, 2380 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:35,582 INFO L231 Difference]: Finished difference. Result has 113 places, 189 transitions, 1856 flow [2024-06-28 01:33:35,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1738, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1856, PETRI_PLACES=113, PETRI_TRANSITIONS=189} [2024-06-28 01:33:35,583 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2024-06-28 01:33:35,583 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 189 transitions, 1856 flow [2024-06-28 01:33:35,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:35,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:35,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:35,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:33:35,583 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:35,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:35,584 INFO L85 PathProgramCache]: Analyzing trace with hash 582806354, now seen corresponding path program 1 times [2024-06-28 01:33:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:35,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684000778] [2024-06-28 01:33:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:35,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:36,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:36,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684000778] [2024-06-28 01:33:36,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684000778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:36,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:36,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:33:36,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770152552] [2024-06-28 01:33:36,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:36,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:33:36,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:36,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:33:36,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:33:36,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:36,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 189 transitions, 1856 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:36,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:36,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:36,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:37,251 INFO L124 PetriNetUnfolderBase]: 4954/8350 cut-off events. [2024-06-28 01:33:37,251 INFO L125 PetriNetUnfolderBase]: For 49346/49403 co-relation queries the response was YES. [2024-06-28 01:33:37,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33323 conditions, 8350 events. 4954/8350 cut-off events. For 49346/49403 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 55804 event pairs, 1952 based on Foata normal form. 42/8102 useless extension candidates. Maximal degree in co-relation 33276. Up to 7053 conditions per place. [2024-06-28 01:33:37,307 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 174 selfloop transitions, 12 changer transitions 0/206 dead transitions. [2024-06-28 01:33:37,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 206 transitions, 2308 flow [2024-06-28 01:33:37,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:33:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:33:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 01:33:37,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-28 01:33:37,309 INFO L175 Difference]: Start difference. First operand has 113 places, 189 transitions, 1856 flow. Second operand 5 states and 119 transitions. [2024-06-28 01:33:37,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 206 transitions, 2308 flow [2024-06-28 01:33:37,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 206 transitions, 2251 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:37,357 INFO L231 Difference]: Finished difference. Result has 114 places, 192 transitions, 1856 flow [2024-06-28 01:33:37,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1856, PETRI_PLACES=114, PETRI_TRANSITIONS=192} [2024-06-28 01:33:37,358 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-28 01:33:37,358 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 192 transitions, 1856 flow [2024-06-28 01:33:37,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:37,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:37,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:37,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:33:37,359 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:37,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1859324443, now seen corresponding path program 1 times [2024-06-28 01:33:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:37,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668142275] [2024-06-28 01:33:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:37,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:38,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:38,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668142275] [2024-06-28 01:33:38,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668142275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:38,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:38,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636232423] [2024-06-28 01:33:38,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:38,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:38,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:38,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:38,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 192 transitions, 1856 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:38,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:38,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:38,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:40,134 INFO L124 PetriNetUnfolderBase]: 5101/8373 cut-off events. [2024-06-28 01:33:40,134 INFO L125 PetriNetUnfolderBase]: For 55223/55231 co-relation queries the response was YES. [2024-06-28 01:33:40,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35042 conditions, 8373 events. 5101/8373 cut-off events. For 55223/55231 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 54845 event pairs, 1658 based on Foata normal form. 8/8173 useless extension candidates. Maximal degree in co-relation 34994. Up to 6613 conditions per place. [2024-06-28 01:33:40,187 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 137 selfloop transitions, 113 changer transitions 0/261 dead transitions. [2024-06-28 01:33:40,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 261 transitions, 2788 flow [2024-06-28 01:33:40,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:33:40,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:33:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 01:33:40,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:33:40,189 INFO L175 Difference]: Start difference. First operand has 114 places, 192 transitions, 1856 flow. Second operand 9 states and 234 transitions. [2024-06-28 01:33:40,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 261 transitions, 2788 flow [2024-06-28 01:33:40,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 261 transitions, 2755 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:40,235 INFO L231 Difference]: Finished difference. Result has 121 places, 201 transitions, 2223 flow [2024-06-28 01:33:40,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2223, PETRI_PLACES=121, PETRI_TRANSITIONS=201} [2024-06-28 01:33:40,236 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-28 01:33:40,236 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 201 transitions, 2223 flow [2024-06-28 01:33:40,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:40,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:40,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:40,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:33:40,237 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:40,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1859414653, now seen corresponding path program 2 times [2024-06-28 01:33:40,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:40,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561671948] [2024-06-28 01:33:40,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:40,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:41,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561671948] [2024-06-28 01:33:41,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561671948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:41,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:41,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:41,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113674242] [2024-06-28 01:33:41,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:41,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:41,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:41,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:41,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:41,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:41,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 201 transitions, 2223 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:41,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:41,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:41,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:42,688 INFO L124 PetriNetUnfolderBase]: 5091/8365 cut-off events. [2024-06-28 01:33:42,688 INFO L125 PetriNetUnfolderBase]: For 65061/65069 co-relation queries the response was YES. [2024-06-28 01:33:42,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37222 conditions, 8365 events. 5091/8365 cut-off events. For 65061/65069 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54872 event pairs, 1674 based on Foata normal form. 8/8163 useless extension candidates. Maximal degree in co-relation 37172. Up to 6709 conditions per place. [2024-06-28 01:33:42,739 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 129 selfloop transitions, 107 changer transitions 0/247 dead transitions. [2024-06-28 01:33:42,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 247 transitions, 2901 flow [2024-06-28 01:33:42,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:33:42,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-06-28 01:33:42,740 INFO L175 Difference]: Start difference. First operand has 121 places, 201 transitions, 2223 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:33:42,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 247 transitions, 2901 flow [2024-06-28 01:33:42,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 247 transitions, 2750 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:42,806 INFO L231 Difference]: Finished difference. Result has 125 places, 201 transitions, 2307 flow [2024-06-28 01:33:42,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2307, PETRI_PLACES=125, PETRI_TRANSITIONS=201} [2024-06-28 01:33:42,807 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-28 01:33:42,807 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 201 transitions, 2307 flow [2024-06-28 01:33:42,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:42,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:42,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:42,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:33:42,807 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:42,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:42,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1863133723, now seen corresponding path program 3 times [2024-06-28 01:33:42,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:42,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921292582] [2024-06-28 01:33:42,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:42,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:44,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:44,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921292582] [2024-06-28 01:33:44,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921292582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:44,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:44,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:44,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727813358] [2024-06-28 01:33:44,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:44,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:44,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:44,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:44,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:44,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:44,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 201 transitions, 2307 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:44,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:44,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:44,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:45,539 INFO L124 PetriNetUnfolderBase]: 5146/8432 cut-off events. [2024-06-28 01:33:45,539 INFO L125 PetriNetUnfolderBase]: For 70513/70513 co-relation queries the response was YES. [2024-06-28 01:33:45,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38267 conditions, 8432 events. 5146/8432 cut-off events. For 70513/70513 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 55062 event pairs, 1492 based on Foata normal form. 4/8223 useless extension candidates. Maximal degree in co-relation 38215. Up to 6608 conditions per place. [2024-06-28 01:33:45,599 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 128 selfloop transitions, 126 changer transitions 0/265 dead transitions. [2024-06-28 01:33:45,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 265 transitions, 3301 flow [2024-06-28 01:33:45,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:45,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:33:45,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-28 01:33:45,601 INFO L175 Difference]: Start difference. First operand has 125 places, 201 transitions, 2307 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:33:45,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 265 transitions, 3301 flow [2024-06-28 01:33:45,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 265 transitions, 3068 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:45,673 INFO L231 Difference]: Finished difference. Result has 127 places, 213 transitions, 2580 flow [2024-06-28 01:33:45,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2580, PETRI_PLACES=127, PETRI_TRANSITIONS=213} [2024-06-28 01:33:45,673 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-28 01:33:45,673 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 213 transitions, 2580 flow [2024-06-28 01:33:45,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:45,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:45,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:45,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:33:45,674 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:45,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1242778093, now seen corresponding path program 1 times [2024-06-28 01:33:45,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:45,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66587296] [2024-06-28 01:33:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:45,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:46,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:46,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66587296] [2024-06-28 01:33:46,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66587296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:46,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:46,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:46,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875773888] [2024-06-28 01:33:46,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:46,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:46,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:46,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:33:46,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 213 transitions, 2580 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:46,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:46,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:33:46,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:48,034 INFO L124 PetriNetUnfolderBase]: 5616/9083 cut-off events. [2024-06-28 01:33:48,034 INFO L125 PetriNetUnfolderBase]: For 85947/85947 co-relation queries the response was YES. [2024-06-28 01:33:48,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43638 conditions, 9083 events. 5616/9083 cut-off events. For 85947/85947 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 58164 event pairs, 1972 based on Foata normal form. 2/8847 useless extension candidates. Maximal degree in co-relation 43584. Up to 7870 conditions per place. [2024-06-28 01:33:48,096 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 220 selfloop transitions, 25 changer transitions 0/254 dead transitions. [2024-06-28 01:33:48,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 254 transitions, 3305 flow [2024-06-28 01:33:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:33:48,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:33:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:33:48,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:33:48,099 INFO L175 Difference]: Start difference. First operand has 127 places, 213 transitions, 2580 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:33:48,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 254 transitions, 3305 flow [2024-06-28 01:33:48,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 254 transitions, 3142 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-28 01:33:48,217 INFO L231 Difference]: Finished difference. Result has 131 places, 219 transitions, 2566 flow [2024-06-28 01:33:48,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2566, PETRI_PLACES=131, PETRI_TRANSITIONS=219} [2024-06-28 01:33:48,217 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-28 01:33:48,218 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 219 transitions, 2566 flow [2024-06-28 01:33:48,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:48,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:48,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:48,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:33:48,218 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:48,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash -820550827, now seen corresponding path program 4 times [2024-06-28 01:33:48,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:48,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124230529] [2024-06-28 01:33:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:48,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:49,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:49,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:49,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124230529] [2024-06-28 01:33:49,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124230529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:49,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:49,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:33:49,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558184108] [2024-06-28 01:33:49,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:49,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:33:49,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:49,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:33:49,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:33:49,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:49,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 219 transitions, 2566 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:49,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:49,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:49,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:50,718 INFO L124 PetriNetUnfolderBase]: 5177/8267 cut-off events. [2024-06-28 01:33:50,718 INFO L125 PetriNetUnfolderBase]: For 79180/79180 co-relation queries the response was YES. [2024-06-28 01:33:50,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39200 conditions, 8267 events. 5177/8267 cut-off events. For 79180/79180 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 52758 event pairs, 1633 based on Foata normal form. 6/8113 useless extension candidates. Maximal degree in co-relation 39145. Up to 7050 conditions per place. [2024-06-28 01:33:50,769 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 222 selfloop transitions, 39 changer transitions 0/272 dead transitions. [2024-06-28 01:33:50,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 272 transitions, 3474 flow [2024-06-28 01:33:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:33:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:33:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:33:50,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 01:33:50,771 INFO L175 Difference]: Start difference. First operand has 131 places, 219 transitions, 2566 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:33:50,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 272 transitions, 3474 flow [2024-06-28 01:33:50,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 272 transitions, 3406 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:33:50,854 INFO L231 Difference]: Finished difference. Result has 135 places, 225 transitions, 2703 flow [2024-06-28 01:33:50,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2703, PETRI_PLACES=135, PETRI_TRANSITIONS=225} [2024-06-28 01:33:50,854 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 01:33:50,854 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 225 transitions, 2703 flow [2024-06-28 01:33:50,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:50,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:50,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:50,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:33:50,855 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:50,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash 887129359, now seen corresponding path program 1 times [2024-06-28 01:33:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:50,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740847261] [2024-06-28 01:33:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:50,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:51,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:51,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740847261] [2024-06-28 01:33:51,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740847261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:51,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:51,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:33:51,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614041924] [2024-06-28 01:33:51,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:51,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:33:51,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:51,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:33:51,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:33:51,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:33:51,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 225 transitions, 2703 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:51,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:51,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:33:51,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:53,256 INFO L124 PetriNetUnfolderBase]: 5870/9611 cut-off events. [2024-06-28 01:33:53,256 INFO L125 PetriNetUnfolderBase]: For 100011/100136 co-relation queries the response was YES. [2024-06-28 01:33:53,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45058 conditions, 9611 events. 5870/9611 cut-off events. For 100011/100136 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 63107 event pairs, 2212 based on Foata normal form. 52/9327 useless extension candidates. Maximal degree in co-relation 45001. Up to 8308 conditions per place. [2024-06-28 01:33:53,340 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 209 selfloop transitions, 15 changer transitions 0/247 dead transitions. [2024-06-28 01:33:53,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 247 transitions, 3261 flow [2024-06-28 01:33:53,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:33:53,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:33:53,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:33:53,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 01:33:53,341 INFO L175 Difference]: Start difference. First operand has 135 places, 225 transitions, 2703 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:33:53,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 247 transitions, 3261 flow [2024-06-28 01:33:53,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 247 transitions, 3029 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:53,464 INFO L231 Difference]: Finished difference. Result has 135 places, 228 transitions, 2537 flow [2024-06-28 01:33:53,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2537, PETRI_PLACES=135, PETRI_TRANSITIONS=228} [2024-06-28 01:33:53,464 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 01:33:53,464 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 228 transitions, 2537 flow [2024-06-28 01:33:53,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:53,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:53,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:53,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:33:53,465 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:53,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1015439348, now seen corresponding path program 1 times [2024-06-28 01:33:53,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:53,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115900001] [2024-06-28 01:33:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:53,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:54,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:54,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115900001] [2024-06-28 01:33:54,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115900001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:54,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:54,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:54,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974469728] [2024-06-28 01:33:54,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:54,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:54,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:54,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:54,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:54,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:54,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 228 transitions, 2537 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:54,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:54,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:54,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:56,628 INFO L124 PetriNetUnfolderBase]: 5789/9365 cut-off events. [2024-06-28 01:33:56,628 INFO L125 PetriNetUnfolderBase]: For 114904/114912 co-relation queries the response was YES. [2024-06-28 01:33:56,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46732 conditions, 9365 events. 5789/9365 cut-off events. For 114904/114912 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 61907 event pairs, 1500 based on Foata normal form. 20/9144 useless extension candidates. Maximal degree in co-relation 46675. Up to 7082 conditions per place. [2024-06-28 01:33:56,684 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 178 selfloop transitions, 116 changer transitions 0/306 dead transitions. [2024-06-28 01:33:56,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 306 transitions, 3611 flow [2024-06-28 01:33:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-28 01:33:56,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5479166666666667 [2024-06-28 01:33:56,688 INFO L175 Difference]: Start difference. First operand has 135 places, 228 transitions, 2537 flow. Second operand 10 states and 263 transitions. [2024-06-28 01:33:56,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 306 transitions, 3611 flow [2024-06-28 01:33:56,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 306 transitions, 3567 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:33:56,781 INFO L231 Difference]: Finished difference. Result has 141 places, 230 transitions, 2781 flow [2024-06-28 01:33:56,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2493, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2781, PETRI_PLACES=141, PETRI_TRANSITIONS=230} [2024-06-28 01:33:56,782 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-06-28 01:33:56,782 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 230 transitions, 2781 flow [2024-06-28 01:33:56,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:56,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:56,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:56,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:33:56,783 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:33:56,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:56,784 INFO L85 PathProgramCache]: Analyzing trace with hash 789651788, now seen corresponding path program 2 times [2024-06-28 01:33:56,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:56,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844636639] [2024-06-28 01:33:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:56,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:58,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:58,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844636639] [2024-06-28 01:33:58,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844636639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:58,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:58,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:33:58,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129389177] [2024-06-28 01:33:58,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:58,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:33:58,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:58,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:33:58,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:33:58,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:33:58,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 230 transitions, 2781 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:58,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:58,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:33:58,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:59,842 INFO L124 PetriNetUnfolderBase]: 5924/9496 cut-off events. [2024-06-28 01:33:59,843 INFO L125 PetriNetUnfolderBase]: For 131096/131104 co-relation queries the response was YES. [2024-06-28 01:33:59,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49328 conditions, 9496 events. 5924/9496 cut-off events. For 131096/131104 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 62593 event pairs, 1837 based on Foata normal form. 24/9314 useless extension candidates. Maximal degree in co-relation 49270. Up to 7582 conditions per place. [2024-06-28 01:33:59,917 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 176 selfloop transitions, 114 changer transitions 0/302 dead transitions. [2024-06-28 01:33:59,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 302 transitions, 3727 flow [2024-06-28 01:33:59,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:59,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-28 01:33:59,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5395833333333333 [2024-06-28 01:33:59,940 INFO L175 Difference]: Start difference. First operand has 141 places, 230 transitions, 2781 flow. Second operand 10 states and 259 transitions. [2024-06-28 01:33:59,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 302 transitions, 3727 flow [2024-06-28 01:34:00,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 302 transitions, 3552 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:00,071 INFO L231 Difference]: Finished difference. Result has 145 places, 231 transitions, 2869 flow [2024-06-28 01:34:00,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2869, PETRI_PLACES=145, PETRI_TRANSITIONS=231} [2024-06-28 01:34:00,072 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 91 predicate places. [2024-06-28 01:34:00,072 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 231 transitions, 2869 flow [2024-06-28 01:34:00,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:00,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:00,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:00,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:34:00,073 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:00,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:00,076 INFO L85 PathProgramCache]: Analyzing trace with hash 789767108, now seen corresponding path program 3 times [2024-06-28 01:34:00,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:00,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417598357] [2024-06-28 01:34:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:00,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:01,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:01,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417598357] [2024-06-28 01:34:01,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417598357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:01,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:01,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:01,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122024831] [2024-06-28 01:34:01,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:01,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:01,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:01,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:01,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:01,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:34:01,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 231 transitions, 2869 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:01,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:01,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:34:01,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:02,896 INFO L124 PetriNetUnfolderBase]: 5877/9411 cut-off events. [2024-06-28 01:34:02,896 INFO L125 PetriNetUnfolderBase]: For 131621/131629 co-relation queries the response was YES. [2024-06-28 01:34:02,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49093 conditions, 9411 events. 5877/9411 cut-off events. For 131621/131629 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 61958 event pairs, 1811 based on Foata normal form. 24/9236 useless extension candidates. Maximal degree in co-relation 49033. Up to 7613 conditions per place. [2024-06-28 01:34:02,976 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 170 selfloop transitions, 108 changer transitions 0/290 dead transitions. [2024-06-28 01:34:02,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 290 transitions, 3705 flow [2024-06-28 01:34:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:02,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 01:34:02,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-06-28 01:34:02,978 INFO L175 Difference]: Start difference. First operand has 145 places, 231 transitions, 2869 flow. Second operand 9 states and 230 transitions. [2024-06-28 01:34:02,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 290 transitions, 3705 flow [2024-06-28 01:34:03,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 290 transitions, 3466 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:03,142 INFO L231 Difference]: Finished difference. Result has 146 places, 231 transitions, 2853 flow [2024-06-28 01:34:03,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2853, PETRI_PLACES=146, PETRI_TRANSITIONS=231} [2024-06-28 01:34:03,143 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-28 01:34:03,143 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 231 transitions, 2853 flow [2024-06-28 01:34:03,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:03,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:03,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:03,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:34:03,144 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:03,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash -897164180, now seen corresponding path program 1 times [2024-06-28 01:34:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:03,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783606918] [2024-06-28 01:34:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:03,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:04,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:04,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783606918] [2024-06-28 01:34:04,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783606918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:04,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:04,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235406506] [2024-06-28 01:34:04,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:04,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:04,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:04,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:04,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 231 transitions, 2853 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:04,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:04,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:04,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:05,996 INFO L124 PetriNetUnfolderBase]: 6427/10238 cut-off events. [2024-06-28 01:34:05,996 INFO L125 PetriNetUnfolderBase]: For 138397/138407 co-relation queries the response was YES. [2024-06-28 01:34:06,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52915 conditions, 10238 events. 6427/10238 cut-off events. For 138397/138407 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 66443 event pairs, 2008 based on Foata normal form. 8/10015 useless extension candidates. Maximal degree in co-relation 52854. Up to 8904 conditions per place. [2024-06-28 01:34:06,072 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 228 selfloop transitions, 45 changer transitions 0/283 dead transitions. [2024-06-28 01:34:06,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 283 transitions, 3681 flow [2024-06-28 01:34:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:06,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:06,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:34:06,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 01:34:06,075 INFO L175 Difference]: Start difference. First operand has 146 places, 231 transitions, 2853 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:34:06,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 283 transitions, 3681 flow [2024-06-28 01:34:06,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 283 transitions, 3455 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:06,205 INFO L231 Difference]: Finished difference. Result has 147 places, 236 transitions, 2800 flow [2024-06-28 01:34:06,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2627, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2800, PETRI_PLACES=147, PETRI_TRANSITIONS=236} [2024-06-28 01:34:06,206 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2024-06-28 01:34:06,206 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 236 transitions, 2800 flow [2024-06-28 01:34:06,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:06,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:06,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:06,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:34:06,207 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:06,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:06,207 INFO L85 PathProgramCache]: Analyzing trace with hash -897348878, now seen corresponding path program 4 times [2024-06-28 01:34:06,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:06,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456758490] [2024-06-28 01:34:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:06,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:07,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:07,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456758490] [2024-06-28 01:34:07,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456758490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:07,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:07,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:07,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951292255] [2024-06-28 01:34:07,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:07,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:07,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:07,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:07,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:07,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:34:07,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 236 transitions, 2800 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:07,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:07,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:34:07,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:09,074 INFO L124 PetriNetUnfolderBase]: 6103/9828 cut-off events. [2024-06-28 01:34:09,074 INFO L125 PetriNetUnfolderBase]: For 150549/150549 co-relation queries the response was YES. [2024-06-28 01:34:09,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51668 conditions, 9828 events. 6103/9828 cut-off events. For 150549/150549 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 65230 event pairs, 1655 based on Foata normal form. 24/9635 useless extension candidates. Maximal degree in co-relation 51605. Up to 7677 conditions per place. [2024-06-28 01:34:09,152 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 153 selfloop transitions, 135 changer transitions 0/301 dead transitions. [2024-06-28 01:34:09,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 301 transitions, 3816 flow [2024-06-28 01:34:09,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:09,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:34:09,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-06-28 01:34:09,154 INFO L175 Difference]: Start difference. First operand has 147 places, 236 transitions, 2800 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:34:09,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 301 transitions, 3816 flow [2024-06-28 01:34:09,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 301 transitions, 3695 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:09,322 INFO L231 Difference]: Finished difference. Result has 151 places, 237 transitions, 2986 flow [2024-06-28 01:34:09,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2986, PETRI_PLACES=151, PETRI_TRANSITIONS=237} [2024-06-28 01:34:09,322 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-28 01:34:09,323 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 237 transitions, 2986 flow [2024-06-28 01:34:09,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:09,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:09,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:09,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:34:09,323 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:09,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:09,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1718842704, now seen corresponding path program 1 times [2024-06-28 01:34:09,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:09,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451964951] [2024-06-28 01:34:09,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:09,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:10,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:10,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451964951] [2024-06-28 01:34:10,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451964951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:10,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:10,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:34:10,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713835769] [2024-06-28 01:34:10,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:10,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:34:10,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:10,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:34:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:34:10,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:34:10,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 237 transitions, 2986 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:10,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:10,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:34:10,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:11,358 INFO L124 PetriNetUnfolderBase]: 6426/10637 cut-off events. [2024-06-28 01:34:11,358 INFO L125 PetriNetUnfolderBase]: For 157856/157977 co-relation queries the response was YES. [2024-06-28 01:34:11,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54806 conditions, 10637 events. 6426/10637 cut-off events. For 157856/157977 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 72619 event pairs, 2179 based on Foata normal form. 55/10346 useless extension candidates. Maximal degree in co-relation 54742. Up to 8966 conditions per place. [2024-06-28 01:34:11,445 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 185 selfloop transitions, 59 changer transitions 0/271 dead transitions. [2024-06-28 01:34:11,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 271 transitions, 3708 flow [2024-06-28 01:34:11,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:34:11,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:34:11,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:34:11,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:34:11,447 INFO L175 Difference]: Start difference. First operand has 151 places, 237 transitions, 2986 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:34:11,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 271 transitions, 3708 flow [2024-06-28 01:34:11,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 271 transitions, 3427 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:11,609 INFO L231 Difference]: Finished difference. Result has 151 places, 247 transitions, 2945 flow [2024-06-28 01:34:11,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2945, PETRI_PLACES=151, PETRI_TRANSITIONS=247} [2024-06-28 01:34:11,610 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-28 01:34:11,610 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 247 transitions, 2945 flow [2024-06-28 01:34:11,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:11,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:11,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:11,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:34:11,610 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:11,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:11,611 INFO L85 PathProgramCache]: Analyzing trace with hash -752028006, now seen corresponding path program 2 times [2024-06-28 01:34:11,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:11,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245105924] [2024-06-28 01:34:11,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:11,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:12,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:12,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245105924] [2024-06-28 01:34:12,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245105924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:12,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:12,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:12,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893797091] [2024-06-28 01:34:12,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:12,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:12,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:12,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:12,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:12,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 247 transitions, 2945 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:12,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:12,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:12,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:14,333 INFO L124 PetriNetUnfolderBase]: 6807/11125 cut-off events. [2024-06-28 01:34:14,333 INFO L125 PetriNetUnfolderBase]: For 168005/168005 co-relation queries the response was YES. [2024-06-28 01:34:14,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58094 conditions, 11125 events. 6807/11125 cut-off events. For 168005/168005 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 74682 event pairs, 2297 based on Foata normal form. 4/10795 useless extension candidates. Maximal degree in co-relation 58028. Up to 9606 conditions per place. [2024-06-28 01:34:14,419 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 259 selfloop transitions, 20 changer transitions 0/289 dead transitions. [2024-06-28 01:34:14,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 289 transitions, 3734 flow [2024-06-28 01:34:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:34:14,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 01:34:14,421 INFO L175 Difference]: Start difference. First operand has 151 places, 247 transitions, 2945 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:34:14,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 289 transitions, 3734 flow [2024-06-28 01:34:14,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 289 transitions, 3710 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-28 01:34:14,588 INFO L231 Difference]: Finished difference. Result has 159 places, 251 transitions, 3034 flow [2024-06-28 01:34:14,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2921, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3034, PETRI_PLACES=159, PETRI_TRANSITIONS=251} [2024-06-28 01:34:14,593 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2024-06-28 01:34:14,593 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 251 transitions, 3034 flow [2024-06-28 01:34:14,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:14,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:14,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:14,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:34:14,594 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:14,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:14,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2094882076, now seen corresponding path program 3 times [2024-06-28 01:34:14,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:14,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073467324] [2024-06-28 01:34:14,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:14,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:15,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:15,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073467324] [2024-06-28 01:34:15,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073467324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:15,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:15,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:15,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606052321] [2024-06-28 01:34:15,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:15,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:15,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:15,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:15,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:15,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:15,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 251 transitions, 3034 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:15,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:15,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:15,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:17,495 INFO L124 PetriNetUnfolderBase]: 6844/11188 cut-off events. [2024-06-28 01:34:17,495 INFO L125 PetriNetUnfolderBase]: For 181052/181052 co-relation queries the response was YES. [2024-06-28 01:34:17,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59323 conditions, 11188 events. 6844/11188 cut-off events. For 181052/181052 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 75173 event pairs, 2284 based on Foata normal form. 4/10855 useless extension candidates. Maximal degree in co-relation 59253. Up to 9578 conditions per place. [2024-06-28 01:34:17,598 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 256 selfloop transitions, 30 changer transitions 0/296 dead transitions. [2024-06-28 01:34:17,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 296 transitions, 3856 flow [2024-06-28 01:34:17,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:34:17,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 01:34:17,600 INFO L175 Difference]: Start difference. First operand has 159 places, 251 transitions, 3034 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:34:17,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 296 transitions, 3856 flow [2024-06-28 01:34:17,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 296 transitions, 3785 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:34:17,851 INFO L231 Difference]: Finished difference. Result has 163 places, 253 transitions, 3085 flow [2024-06-28 01:34:17,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3085, PETRI_PLACES=163, PETRI_TRANSITIONS=253} [2024-06-28 01:34:17,852 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2024-06-28 01:34:17,852 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 253 transitions, 3085 flow [2024-06-28 01:34:17,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:17,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:17,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:17,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:34:17,853 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:17,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash 597688238, now seen corresponding path program 1 times [2024-06-28 01:34:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:17,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259148975] [2024-06-28 01:34:17,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:17,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:18,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:18,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:18,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259148975] [2024-06-28 01:34:18,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259148975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:18,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:18,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:18,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330768395] [2024-06-28 01:34:18,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:18,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:18,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:18,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:18,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:19,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:19,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 253 transitions, 3085 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:19,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:19,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:19,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:20,596 INFO L124 PetriNetUnfolderBase]: 6892/11267 cut-off events. [2024-06-28 01:34:20,596 INFO L125 PetriNetUnfolderBase]: For 190343/190343 co-relation queries the response was YES. [2024-06-28 01:34:20,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60226 conditions, 11267 events. 6892/11267 cut-off events. For 190343/190343 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 75841 event pairs, 2346 based on Foata normal form. 2/10929 useless extension candidates. Maximal degree in co-relation 60155. Up to 9673 conditions per place. [2024-06-28 01:34:20,698 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 264 selfloop transitions, 30 changer transitions 0/304 dead transitions. [2024-06-28 01:34:20,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 304 transitions, 4002 flow [2024-06-28 01:34:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:34:20,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:34:20,699 INFO L175 Difference]: Start difference. First operand has 163 places, 253 transitions, 3085 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:34:20,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 304 transitions, 4002 flow [2024-06-28 01:34:20,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 304 transitions, 3841 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:20,980 INFO L231 Difference]: Finished difference. Result has 167 places, 266 transitions, 3187 flow [2024-06-28 01:34:20,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3187, PETRI_PLACES=167, PETRI_TRANSITIONS=266} [2024-06-28 01:34:20,989 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 113 predicate places. [2024-06-28 01:34:20,990 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 266 transitions, 3187 flow [2024-06-28 01:34:20,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:20,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:20,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:20,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:34:20,990 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:20,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:20,991 INFO L85 PathProgramCache]: Analyzing trace with hash -758468814, now seen corresponding path program 5 times [2024-06-28 01:34:20,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:20,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475961145] [2024-06-28 01:34:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:20,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:22,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:22,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475961145] [2024-06-28 01:34:22,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475961145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:22,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:22,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:22,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252976329] [2024-06-28 01:34:22,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:22,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:22,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:22,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:22,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:22,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:34:22,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 266 transitions, 3187 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:22,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:22,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:34:22,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:23,928 INFO L124 PetriNetUnfolderBase]: 6402/10570 cut-off events. [2024-06-28 01:34:23,929 INFO L125 PetriNetUnfolderBase]: For 189184/189184 co-relation queries the response was YES. [2024-06-28 01:34:23,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56500 conditions, 10570 events. 6402/10570 cut-off events. For 189184/189184 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 72639 event pairs, 1940 based on Foata normal form. 24/10293 useless extension candidates. Maximal degree in co-relation 56426. Up to 8541 conditions per place. [2024-06-28 01:34:24,019 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 258 selfloop transitions, 52 changer transitions 0/324 dead transitions. [2024-06-28 01:34:24,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 324 transitions, 4135 flow [2024-06-28 01:34:24,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:24,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:34:24,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-28 01:34:24,021 INFO L175 Difference]: Start difference. First operand has 167 places, 266 transitions, 3187 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:34:24,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 324 transitions, 4135 flow [2024-06-28 01:34:24,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 324 transitions, 4093 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:34:24,298 INFO L231 Difference]: Finished difference. Result has 172 places, 267 transitions, 3290 flow [2024-06-28 01:34:24,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3145, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3290, PETRI_PLACES=172, PETRI_TRANSITIONS=267} [2024-06-28 01:34:24,299 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 118 predicate places. [2024-06-28 01:34:24,299 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 267 transitions, 3290 flow [2024-06-28 01:34:24,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:24,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:24,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:24,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:34:24,300 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:24,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:24,300 INFO L85 PathProgramCache]: Analyzing trace with hash 598013986, now seen corresponding path program 4 times [2024-06-28 01:34:24,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:24,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458948153] [2024-06-28 01:34:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:24,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:25,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:25,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458948153] [2024-06-28 01:34:25,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458948153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:25,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:25,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:25,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522984972] [2024-06-28 01:34:25,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:25,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:25,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:25,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:25,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:25,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:25,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 267 transitions, 3290 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:25,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:25,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:25,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:27,038 INFO L124 PetriNetUnfolderBase]: 7006/11495 cut-off events. [2024-06-28 01:34:27,038 INFO L125 PetriNetUnfolderBase]: For 200232/200232 co-relation queries the response was YES. [2024-06-28 01:34:27,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61737 conditions, 11495 events. 7006/11495 cut-off events. For 200232/200232 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 77945 event pairs, 2318 based on Foata normal form. 4/11146 useless extension candidates. Maximal degree in co-relation 61662. Up to 9869 conditions per place. [2024-06-28 01:34:27,142 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 275 selfloop transitions, 28 changer transitions 0/313 dead transitions. [2024-06-28 01:34:27,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 313 transitions, 4142 flow [2024-06-28 01:34:27,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:27,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:34:27,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 01:34:27,143 INFO L175 Difference]: Start difference. First operand has 172 places, 267 transitions, 3290 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:34:27,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 313 transitions, 4142 flow [2024-06-28 01:34:27,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 313 transitions, 4023 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:27,436 INFO L231 Difference]: Finished difference. Result has 174 places, 272 transitions, 3323 flow [2024-06-28 01:34:27,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3323, PETRI_PLACES=174, PETRI_TRANSITIONS=272} [2024-06-28 01:34:27,436 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 120 predicate places. [2024-06-28 01:34:27,436 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 272 transitions, 3323 flow [2024-06-28 01:34:27,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:27,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:27,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:27,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:34:27,437 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:27,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:27,437 INFO L85 PathProgramCache]: Analyzing trace with hash -758284116, now seen corresponding path program 5 times [2024-06-28 01:34:27,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:27,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445545729] [2024-06-28 01:34:27,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:27,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:28,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:28,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445545729] [2024-06-28 01:34:28,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445545729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:28,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:28,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868995166] [2024-06-28 01:34:28,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:28,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:28,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:28,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:28,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:28,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 272 transitions, 3323 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:28,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:28,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:28,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:30,480 INFO L124 PetriNetUnfolderBase]: 7006/11470 cut-off events. [2024-06-28 01:34:30,480 INFO L125 PetriNetUnfolderBase]: For 205291/205291 co-relation queries the response was YES. [2024-06-28 01:34:30,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61759 conditions, 11470 events. 7006/11470 cut-off events. For 205291/205291 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 77519 event pairs, 2296 based on Foata normal form. 4/11128 useless extension candidates. Maximal degree in co-relation 61682. Up to 9856 conditions per place. [2024-06-28 01:34:30,579 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 283 selfloop transitions, 25 changer transitions 0/318 dead transitions. [2024-06-28 01:34:30,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 318 transitions, 4236 flow [2024-06-28 01:34:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:34:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:34:30,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:34:30,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 01:34:30,581 INFO L175 Difference]: Start difference. First operand has 174 places, 272 transitions, 3323 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:34:30,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 318 transitions, 4236 flow [2024-06-28 01:34:30,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 318 transitions, 4132 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:30,856 INFO L231 Difference]: Finished difference. Result has 178 places, 277 transitions, 3377 flow [2024-06-28 01:34:30,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3377, PETRI_PLACES=178, PETRI_TRANSITIONS=277} [2024-06-28 01:34:30,860 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 124 predicate places. [2024-06-28 01:34:30,860 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 277 transitions, 3377 flow [2024-06-28 01:34:30,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:30,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:30,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:30,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:34:30,861 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:30,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:30,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2092778482, now seen corresponding path program 2 times [2024-06-28 01:34:30,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:30,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045401860] [2024-06-28 01:34:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:30,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:31,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:31,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045401860] [2024-06-28 01:34:31,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045401860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:31,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:31,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:31,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455160844] [2024-06-28 01:34:31,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:31,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:31,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:31,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:34:31,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 277 transitions, 3377 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:31,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:31,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:34:31,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:33,186 INFO L124 PetriNetUnfolderBase]: 6602/10991 cut-off events. [2024-06-28 01:34:33,187 INFO L125 PetriNetUnfolderBase]: For 204081/204202 co-relation queries the response was YES. [2024-06-28 01:34:33,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58700 conditions, 10991 events. 6602/10991 cut-off events. For 204081/204202 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 75974 event pairs, 2292 based on Foata normal form. 69/10691 useless extension candidates. Maximal degree in co-relation 58621. Up to 9357 conditions per place. [2024-06-28 01:34:33,298 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 246 selfloop transitions, 14 changer transitions 0/293 dead transitions. [2024-06-28 01:34:33,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 293 transitions, 3973 flow [2024-06-28 01:34:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:34:33,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:34:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:34:33,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:34:33,299 INFO L175 Difference]: Start difference. First operand has 178 places, 277 transitions, 3377 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:34:33,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 293 transitions, 3973 flow [2024-06-28 01:34:33,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 293 transitions, 3856 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:33,615 INFO L231 Difference]: Finished difference. Result has 179 places, 277 transitions, 3294 flow [2024-06-28 01:34:33,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3260, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3294, PETRI_PLACES=179, PETRI_TRANSITIONS=277} [2024-06-28 01:34:33,616 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-28 01:34:33,616 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 277 transitions, 3294 flow [2024-06-28 01:34:33,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:33,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:33,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:33,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:34:33,616 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:33,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:33,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1725486097, now seen corresponding path program 1 times [2024-06-28 01:34:33,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:33,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534371761] [2024-06-28 01:34:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:33,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:34,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:34,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534371761] [2024-06-28 01:34:34,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534371761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:34,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:34,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:34,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119831942] [2024-06-28 01:34:34,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:34,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:34,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:34,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:34,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:34,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:34,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 277 transitions, 3294 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:34,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:34,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:34,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:35,977 INFO L124 PetriNetUnfolderBase]: 7017/11509 cut-off events. [2024-06-28 01:34:35,978 INFO L125 PetriNetUnfolderBase]: For 219445/219445 co-relation queries the response was YES. [2024-06-28 01:34:36,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62434 conditions, 11509 events. 7017/11509 cut-off events. For 219445/219445 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 78029 event pairs, 2339 based on Foata normal form. 1/11158 useless extension candidates. Maximal degree in co-relation 62354. Up to 9959 conditions per place. [2024-06-28 01:34:36,108 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 271 selfloop transitions, 25 changer transitions 0/306 dead transitions. [2024-06-28 01:34:36,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 306 transitions, 4116 flow [2024-06-28 01:34:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:34:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:34:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 01:34:36,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:34:36,110 INFO L175 Difference]: Start difference. First operand has 179 places, 277 transitions, 3294 flow. Second operand 6 states and 141 transitions. [2024-06-28 01:34:36,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 306 transitions, 4116 flow [2024-06-28 01:34:36,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 306 transitions, 4027 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:36,464 INFO L231 Difference]: Finished difference. Result has 180 places, 283 transitions, 3320 flow [2024-06-28 01:34:36,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3205, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3320, PETRI_PLACES=180, PETRI_TRANSITIONS=283} [2024-06-28 01:34:36,465 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2024-06-28 01:34:36,465 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 283 transitions, 3320 flow [2024-06-28 01:34:36,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:36,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:36,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:36,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:34:36,466 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:36,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:36,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2076684429, now seen corresponding path program 2 times [2024-06-28 01:34:36,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:36,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757631113] [2024-06-28 01:34:36,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:36,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:37,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:37,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757631113] [2024-06-28 01:34:37,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757631113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:37,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:37,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:37,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817958468] [2024-06-28 01:34:37,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:37,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:37,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:37,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:37,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:37,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:37,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 283 transitions, 3320 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:37,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:37,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:37,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:38,889 INFO L124 PetriNetUnfolderBase]: 7014/11503 cut-off events. [2024-06-28 01:34:38,889 INFO L125 PetriNetUnfolderBase]: For 229833/229835 co-relation queries the response was YES. [2024-06-28 01:34:38,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63643 conditions, 11503 events. 7014/11503 cut-off events. For 229833/229835 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 78030 event pairs, 2340 based on Foata normal form. 3/11155 useless extension candidates. Maximal degree in co-relation 63563. Up to 9956 conditions per place. [2024-06-28 01:34:39,002 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 267 selfloop transitions, 25 changer transitions 0/302 dead transitions. [2024-06-28 01:34:39,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 302 transitions, 4002 flow [2024-06-28 01:34:39,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:34:39,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:34:39,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:34:39,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-28 01:34:39,004 INFO L175 Difference]: Start difference. First operand has 180 places, 283 transitions, 3320 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:34:39,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 302 transitions, 4002 flow [2024-06-28 01:34:39,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 302 transitions, 3950 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 01:34:39,367 INFO L231 Difference]: Finished difference. Result has 184 places, 283 transitions, 3325 flow [2024-06-28 01:34:39,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3325, PETRI_PLACES=184, PETRI_TRANSITIONS=283} [2024-06-28 01:34:39,367 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-28 01:34:39,367 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 283 transitions, 3325 flow [2024-06-28 01:34:39,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:39,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:39,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:39,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:34:39,368 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:39,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1731207953, now seen corresponding path program 1 times [2024-06-28 01:34:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:39,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019483967] [2024-06-28 01:34:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:39,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:40,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:40,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:40,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019483967] [2024-06-28 01:34:40,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019483967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:40,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:40,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:34:40,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996590869] [2024-06-28 01:34:40,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:40,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:34:40,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:34:40,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:34:40,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:40,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 283 transitions, 3325 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:40,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:40,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:40,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:41,850 INFO L124 PetriNetUnfolderBase]: 6907/11175 cut-off events. [2024-06-28 01:34:41,851 INFO L125 PetriNetUnfolderBase]: For 226625/226740 co-relation queries the response was YES. [2024-06-28 01:34:41,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60931 conditions, 11175 events. 6907/11175 cut-off events. For 226625/226740 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 74736 event pairs, 2444 based on Foata normal form. 70/10931 useless extension candidates. Maximal degree in co-relation 60849. Up to 9817 conditions per place. [2024-06-28 01:34:41,953 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 259 selfloop transitions, 21 changer transitions 0/311 dead transitions. [2024-06-28 01:34:41,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 311 transitions, 4033 flow [2024-06-28 01:34:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:34:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:34:41,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:34:41,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-28 01:34:41,954 INFO L175 Difference]: Start difference. First operand has 184 places, 283 transitions, 3325 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:34:41,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 311 transitions, 4033 flow [2024-06-28 01:34:42,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 311 transitions, 3963 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:42,334 INFO L231 Difference]: Finished difference. Result has 185 places, 286 transitions, 3341 flow [2024-06-28 01:34:42,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3255, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3341, PETRI_PLACES=185, PETRI_TRANSITIONS=286} [2024-06-28 01:34:42,335 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 131 predicate places. [2024-06-28 01:34:42,335 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 286 transitions, 3341 flow [2024-06-28 01:34:42,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:42,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:42,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:42,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:34:42,336 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:42,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:42,336 INFO L85 PathProgramCache]: Analyzing trace with hash 191270071, now seen corresponding path program 1 times [2024-06-28 01:34:42,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:42,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331903550] [2024-06-28 01:34:42,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:42,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:43,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:43,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331903550] [2024-06-28 01:34:43,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331903550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:43,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:43,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:43,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302731415] [2024-06-28 01:34:43,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:43,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:43,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:43,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:43,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:43,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:43,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 286 transitions, 3341 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:43,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:43,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:43,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:45,530 INFO L124 PetriNetUnfolderBase]: 7050/11393 cut-off events. [2024-06-28 01:34:45,530 INFO L125 PetriNetUnfolderBase]: For 247454/247466 co-relation queries the response was YES. [2024-06-28 01:34:45,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64577 conditions, 11393 events. 7050/11393 cut-off events. For 247454/247466 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 75960 event pairs, 2180 based on Foata normal form. 12/11099 useless extension candidates. Maximal degree in co-relation 64495. Up to 9481 conditions per place. [2024-06-28 01:34:45,636 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 239 selfloop transitions, 122 changer transitions 0/371 dead transitions. [2024-06-28 01:34:45,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 371 transitions, 4802 flow [2024-06-28 01:34:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:45,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:34:45,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-06-28 01:34:45,639 INFO L175 Difference]: Start difference. First operand has 185 places, 286 transitions, 3341 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:34:45,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 371 transitions, 4802 flow [2024-06-28 01:34:45,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 371 transitions, 4738 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:45,994 INFO L231 Difference]: Finished difference. Result has 190 places, 315 transitions, 4040 flow [2024-06-28 01:34:45,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4040, PETRI_PLACES=190, PETRI_TRANSITIONS=315} [2024-06-28 01:34:45,994 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 136 predicate places. [2024-06-28 01:34:45,995 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 315 transitions, 4040 flow [2024-06-28 01:34:45,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:45,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:45,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:45,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:34:45,995 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:45,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1675582049, now seen corresponding path program 2 times [2024-06-28 01:34:45,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:45,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545536627] [2024-06-28 01:34:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:45,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:47,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:47,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545536627] [2024-06-28 01:34:47,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545536627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:47,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:47,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:34:47,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542631573] [2024-06-28 01:34:47,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:47,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:34:47,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:47,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:34:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:34:47,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:47,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 315 transitions, 4040 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:47,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:47,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:47,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:49,197 INFO L124 PetriNetUnfolderBase]: 7260/11693 cut-off events. [2024-06-28 01:34:49,197 INFO L125 PetriNetUnfolderBase]: For 266606/266612 co-relation queries the response was YES. [2024-06-28 01:34:49,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68015 conditions, 11693 events. 7260/11693 cut-off events. For 266606/266612 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 77748 event pairs, 2146 based on Foata normal form. 8/11389 useless extension candidates. Maximal degree in co-relation 67931. Up to 9690 conditions per place. [2024-06-28 01:34:49,314 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 281 selfloop transitions, 106 changer transitions 0/397 dead transitions. [2024-06-28 01:34:49,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 397 transitions, 5354 flow [2024-06-28 01:34:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2024-06-28 01:34:49,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-28 01:34:49,316 INFO L175 Difference]: Start difference. First operand has 190 places, 315 transitions, 4040 flow. Second operand 10 states and 234 transitions. [2024-06-28 01:34:49,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 397 transitions, 5354 flow [2024-06-28 01:34:49,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 397 transitions, 5130 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 01:34:49,685 INFO L231 Difference]: Finished difference. Result has 197 places, 332 transitions, 4299 flow [2024-06-28 01:34:49,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3822, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4299, PETRI_PLACES=197, PETRI_TRANSITIONS=332} [2024-06-28 01:34:49,685 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2024-06-28 01:34:49,686 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 332 transitions, 4299 flow [2024-06-28 01:34:49,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:49,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:49,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:49,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:34:49,686 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:49,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:49,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1675372799, now seen corresponding path program 3 times [2024-06-28 01:34:49,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:49,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674454724] [2024-06-28 01:34:49,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:49,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:50,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:50,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674454724] [2024-06-28 01:34:50,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674454724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:50,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:50,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:50,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060689526] [2024-06-28 01:34:50,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:50,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:50,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:51,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:51,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 332 transitions, 4299 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) [2024-06-28 01:34:51,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:51,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:51,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:53,209 INFO L124 PetriNetUnfolderBase]: 7347/11765 cut-off events. [2024-06-28 01:34:53,209 INFO L125 PetriNetUnfolderBase]: For 288089/288095 co-relation queries the response was YES. [2024-06-28 01:34:53,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70441 conditions, 11765 events. 7347/11765 cut-off events. For 288089/288095 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 77665 event pairs, 1939 based on Foata normal form. 8/11473 useless extension candidates. Maximal degree in co-relation 70354. Up to 9243 conditions per place. [2024-06-28 01:34:53,301 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 225 selfloop transitions, 164 changer transitions 0/399 dead transitions. [2024-06-28 01:34:53,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 399 transitions, 5669 flow [2024-06-28 01:34:53,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:53,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 01:34:53,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:34:53,303 INFO L175 Difference]: Start difference. First operand has 197 places, 332 transitions, 4299 flow. Second operand 9 states and 225 transitions. [2024-06-28 01:34:53,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 399 transitions, 5669 flow [2024-06-28 01:34:53,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 399 transitions, 5561 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 01:34:53,694 INFO L231 Difference]: Finished difference. Result has 203 places, 339 transitions, 4729 flow [2024-06-28 01:34:53,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4191, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4729, PETRI_PLACES=203, PETRI_TRANSITIONS=339} [2024-06-28 01:34:53,694 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 149 predicate places. [2024-06-28 01:34:53,695 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 339 transitions, 4729 flow [2024-06-28 01:34:53,695 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) [2024-06-28 01:34:53,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:53,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:53,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:34:53,695 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:53,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2047856567, now seen corresponding path program 4 times [2024-06-28 01:34:53,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:53,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909279958] [2024-06-28 01:34:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:53,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:55,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:55,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909279958] [2024-06-28 01:34:55,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909279958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:55,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:55,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:55,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339895556] [2024-06-28 01:34:55,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:55,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:55,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:55,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:55,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:55,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:55,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 339 transitions, 4729 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) [2024-06-28 01:34:55,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:55,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:55,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:57,277 INFO L124 PetriNetUnfolderBase]: 7427/11937 cut-off events. [2024-06-28 01:34:57,277 INFO L125 PetriNetUnfolderBase]: For 307930/307936 co-relation queries the response was YES. [2024-06-28 01:34:57,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73624 conditions, 11937 events. 7427/11937 cut-off events. For 307930/307936 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 79382 event pairs, 2011 based on Foata normal form. 8/11626 useless extension candidates. Maximal degree in co-relation 73534. Up to 9553 conditions per place. [2024-06-28 01:34:57,407 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 232 selfloop transitions, 158 changer transitions 0/400 dead transitions. [2024-06-28 01:34:57,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 400 transitions, 5911 flow [2024-06-28 01:34:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:34:57,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:34:57,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 01:34:57,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:34:57,409 INFO L175 Difference]: Start difference. First operand has 203 places, 339 transitions, 4729 flow. Second operand 9 states and 225 transitions. [2024-06-28 01:34:57,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 400 transitions, 5911 flow [2024-06-28 01:34:57,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 400 transitions, 5743 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-28 01:34:57,987 INFO L231 Difference]: Finished difference. Result has 209 places, 344 transitions, 4989 flow [2024-06-28 01:34:57,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4581, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4989, PETRI_PLACES=209, PETRI_TRANSITIONS=344} [2024-06-28 01:34:57,988 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 155 predicate places. [2024-06-28 01:34:57,988 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 344 transitions, 4989 flow [2024-06-28 01:34:57,988 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) [2024-06-28 01:34:57,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:57,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:57,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:34:57,989 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:34:57,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:57,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1744517841, now seen corresponding path program 1 times [2024-06-28 01:34:57,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:57,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524656621] [2024-06-28 01:34:57,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:57,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:58,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:58,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:58,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524656621] [2024-06-28 01:34:58,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524656621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:58,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:58,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:34:58,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563797052] [2024-06-28 01:34:58,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:58,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:34:58,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:58,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:34:58,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:34:58,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:34:58,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 344 transitions, 4989 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:34:58,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:58,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:34:58,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:00,747 INFO L124 PetriNetUnfolderBase]: 7309/11948 cut-off events. [2024-06-28 01:35:00,747 INFO L125 PetriNetUnfolderBase]: For 303738/303884 co-relation queries the response was YES. [2024-06-28 01:35:00,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71343 conditions, 11948 events. 7309/11948 cut-off events. For 303738/303884 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 81522 event pairs, 2361 based on Foata normal form. 94/11662 useless extension candidates. Maximal degree in co-relation 71251. Up to 10218 conditions per place. [2024-06-28 01:35:00,868 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 284 selfloop transitions, 67 changer transitions 0/383 dead transitions. [2024-06-28 01:35:00,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 383 transitions, 6027 flow [2024-06-28 01:35:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:35:00,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-28 01:35:00,869 INFO L175 Difference]: Start difference. First operand has 209 places, 344 transitions, 4989 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:35:00,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 383 transitions, 6027 flow [2024-06-28 01:35:01,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 383 transitions, 5624 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:01,375 INFO L231 Difference]: Finished difference. Result has 209 places, 354 transitions, 4860 flow [2024-06-28 01:35:01,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4586, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4860, PETRI_PLACES=209, PETRI_TRANSITIONS=354} [2024-06-28 01:35:01,375 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 155 predicate places. [2024-06-28 01:35:01,375 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 354 transitions, 4860 flow [2024-06-28 01:35:01,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:01,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:01,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:01,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:35:01,376 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:01,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:01,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1724821391, now seen corresponding path program 5 times [2024-06-28 01:35:01,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:01,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237826852] [2024-06-28 01:35:01,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:01,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:02,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:02,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237826852] [2024-06-28 01:35:02,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237826852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:02,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:02,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:02,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082084435] [2024-06-28 01:35:02,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:02,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:02,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:02,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:02,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:02,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:02,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 354 transitions, 4860 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) [2024-06-28 01:35:02,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:02,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:02,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:04,768 INFO L124 PetriNetUnfolderBase]: 7588/12268 cut-off events. [2024-06-28 01:35:04,769 INFO L125 PetriNetUnfolderBase]: For 329984/330004 co-relation queries the response was YES. [2024-06-28 01:35:04,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75225 conditions, 12268 events. 7588/12268 cut-off events. For 329984/330004 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 82608 event pairs, 2359 based on Foata normal form. 4/11923 useless extension candidates. Maximal degree in co-relation 75133. Up to 10526 conditions per place. [2024-06-28 01:35:04,894 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 363 selfloop transitions, 34 changer transitions 0/410 dead transitions. [2024-06-28 01:35:04,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 410 transitions, 6029 flow [2024-06-28 01:35:04,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:04,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 01:35:04,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-28 01:35:04,895 INFO L175 Difference]: Start difference. First operand has 209 places, 354 transitions, 4860 flow. Second operand 9 states and 215 transitions. [2024-06-28 01:35:04,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 410 transitions, 6029 flow [2024-06-28 01:35:05,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 410 transitions, 5970 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 01:35:05,457 INFO L231 Difference]: Finished difference. Result has 217 places, 360 transitions, 4997 flow [2024-06-28 01:35:05,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4801, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4997, PETRI_PLACES=217, PETRI_TRANSITIONS=360} [2024-06-28 01:35:05,458 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 163 predicate places. [2024-06-28 01:35:05,458 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 360 transitions, 4997 flow [2024-06-28 01:35:05,458 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) [2024-06-28 01:35:05,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:05,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:35:05,459 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:05,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:05,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1730385581, now seen corresponding path program 6 times [2024-06-28 01:35:05,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:05,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130957241] [2024-06-28 01:35:05,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:05,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:06,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:06,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130957241] [2024-06-28 01:35:06,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130957241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:06,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:06,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:06,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382774866] [2024-06-28 01:35:06,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:06,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:06,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:06,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:06,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:06,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:06,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 360 transitions, 4997 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) [2024-06-28 01:35:06,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:06,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:06,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:09,091 INFO L124 PetriNetUnfolderBase]: 7625/12332 cut-off events. [2024-06-28 01:35:09,091 INFO L125 PetriNetUnfolderBase]: For 350074/350086 co-relation queries the response was YES. [2024-06-28 01:35:09,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77087 conditions, 12332 events. 7625/12332 cut-off events. For 350074/350086 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 83128 event pairs, 2385 based on Foata normal form. 4/11985 useless extension candidates. Maximal degree in co-relation 76991. Up to 10581 conditions per place. [2024-06-28 01:35:09,200 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 366 selfloop transitions, 35 changer transitions 0/414 dead transitions. [2024-06-28 01:35:09,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 414 transitions, 6165 flow [2024-06-28 01:35:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 01:35:09,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:35:09,202 INFO L175 Difference]: Start difference. First operand has 217 places, 360 transitions, 4997 flow. Second operand 9 states and 216 transitions. [2024-06-28 01:35:09,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 414 transitions, 6165 flow [2024-06-28 01:35:09,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 414 transitions, 6028 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:09,749 INFO L231 Difference]: Finished difference. Result has 220 places, 364 transitions, 5037 flow [2024-06-28 01:35:09,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4864, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5037, PETRI_PLACES=220, PETRI_TRANSITIONS=364} [2024-06-28 01:35:09,749 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 166 predicate places. [2024-06-28 01:35:09,750 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 364 transitions, 5037 flow [2024-06-28 01:35:09,750 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) [2024-06-28 01:35:09,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:09,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:09,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:35:09,751 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:09,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:09,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2031970249, now seen corresponding path program 7 times [2024-06-28 01:35:09,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:09,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923834256] [2024-06-28 01:35:09,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:09,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:10,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:10,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923834256] [2024-06-28 01:35:10,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923834256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:10,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:10,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:10,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556586422] [2024-06-28 01:35:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:10,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:10,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:10,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:10,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:11,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:11,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 364 transitions, 5037 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) [2024-06-28 01:35:11,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:11,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:11,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:13,421 INFO L124 PetriNetUnfolderBase]: 7662/12377 cut-off events. [2024-06-28 01:35:13,422 INFO L125 PetriNetUnfolderBase]: For 365538/365550 co-relation queries the response was YES. [2024-06-28 01:35:13,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77884 conditions, 12377 events. 7662/12377 cut-off events. For 365538/365550 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 83303 event pairs, 2392 based on Foata normal form. 4/12032 useless extension candidates. Maximal degree in co-relation 77787. Up to 10525 conditions per place. [2024-06-28 01:35:13,570 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 363 selfloop transitions, 40 changer transitions 0/416 dead transitions. [2024-06-28 01:35:13,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 416 transitions, 6179 flow [2024-06-28 01:35:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 01:35:13,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:35:13,571 INFO L175 Difference]: Start difference. First operand has 220 places, 364 transitions, 5037 flow. Second operand 9 states and 216 transitions. [2024-06-28 01:35:13,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 416 transitions, 6179 flow [2024-06-28 01:35:14,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 416 transitions, 6060 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:14,262 INFO L231 Difference]: Finished difference. Result has 224 places, 366 transitions, 5079 flow [2024-06-28 01:35:14,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4918, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5079, PETRI_PLACES=224, PETRI_TRANSITIONS=366} [2024-06-28 01:35:14,263 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-28 01:35:14,263 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 366 transitions, 5079 flow [2024-06-28 01:35:14,263 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) [2024-06-28 01:35:14,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:14,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:14,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:35:14,264 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:14,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:14,264 INFO L85 PathProgramCache]: Analyzing trace with hash 516835783, now seen corresponding path program 8 times [2024-06-28 01:35:14,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:14,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487166679] [2024-06-28 01:35:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:14,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:15,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:15,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487166679] [2024-06-28 01:35:15,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487166679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:15,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:15,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:15,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045457670] [2024-06-28 01:35:15,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:15,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:15,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:15,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:15,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:15,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:15,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 366 transitions, 5079 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) [2024-06-28 01:35:15,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:15,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:15,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:17,873 INFO L124 PetriNetUnfolderBase]: 7752/12533 cut-off events. [2024-06-28 01:35:17,873 INFO L125 PetriNetUnfolderBase]: For 389835/389847 co-relation queries the response was YES. [2024-06-28 01:35:17,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79795 conditions, 12533 events. 7752/12533 cut-off events. For 389835/389847 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 84587 event pairs, 2436 based on Foata normal form. 4/12184 useless extension candidates. Maximal degree in co-relation 79697. Up to 10724 conditions per place. [2024-06-28 01:35:18,021 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 372 selfloop transitions, 36 changer transitions 0/421 dead transitions. [2024-06-28 01:35:18,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 421 transitions, 6453 flow [2024-06-28 01:35:18,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:18,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:18,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:35:18,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-06-28 01:35:18,023 INFO L175 Difference]: Start difference. First operand has 224 places, 366 transitions, 5079 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:35:18,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 421 transitions, 6453 flow [2024-06-28 01:35:18,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 421 transitions, 6310 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:18,779 INFO L231 Difference]: Finished difference. Result has 227 places, 372 transitions, 5194 flow [2024-06-28 01:35:18,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4936, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5194, PETRI_PLACES=227, PETRI_TRANSITIONS=372} [2024-06-28 01:35:18,780 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 173 predicate places. [2024-06-28 01:35:18,780 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 372 transitions, 5194 flow [2024-06-28 01:35:18,780 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) [2024-06-28 01:35:18,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:18,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:18,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:35:18,781 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:18,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1008708919, now seen corresponding path program 9 times [2024-06-28 01:35:18,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:18,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929038116] [2024-06-28 01:35:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:18,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:18,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:20,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929038116] [2024-06-28 01:35:20,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929038116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:20,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:20,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:20,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023487955] [2024-06-28 01:35:20,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:20,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:20,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:20,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:20,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:20,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 372 transitions, 5194 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) [2024-06-28 01:35:20,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:20,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:20,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:22,367 INFO L124 PetriNetUnfolderBase]: 7789/12618 cut-off events. [2024-06-28 01:35:22,368 INFO L125 PetriNetUnfolderBase]: For 408039/408051 co-relation queries the response was YES. [2024-06-28 01:35:22,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80781 conditions, 12618 events. 7789/12618 cut-off events. For 408039/408051 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 85545 event pairs, 2446 based on Foata normal form. 4/12261 useless extension candidates. Maximal degree in co-relation 80681. Up to 10968 conditions per place. [2024-06-28 01:35:22,515 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 385 selfloop transitions, 23 changer transitions 0/421 dead transitions. [2024-06-28 01:35:22,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 421 transitions, 6332 flow [2024-06-28 01:35:22,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:22,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 01:35:22,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:35:22,517 INFO L175 Difference]: Start difference. First operand has 227 places, 372 transitions, 5194 flow. Second operand 9 states and 210 transitions. [2024-06-28 01:35:22,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 421 transitions, 6332 flow [2024-06-28 01:35:23,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 421 transitions, 6185 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:23,423 INFO L231 Difference]: Finished difference. Result has 231 places, 374 transitions, 5184 flow [2024-06-28 01:35:23,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5067, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5184, PETRI_PLACES=231, PETRI_TRANSITIONS=374} [2024-06-28 01:35:23,424 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 177 predicate places. [2024-06-28 01:35:23,424 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 374 transitions, 5184 flow [2024-06-28 01:35:23,424 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) [2024-06-28 01:35:23,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:23,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:23,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:35:23,424 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:23,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:23,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1001090359, now seen corresponding path program 10 times [2024-06-28 01:35:23,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:23,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372995693] [2024-06-28 01:35:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:23,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:24,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:24,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372995693] [2024-06-28 01:35:24,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372995693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:24,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:24,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610064215] [2024-06-28 01:35:24,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:24,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:24,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:24,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:24,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 374 transitions, 5184 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) [2024-06-28 01:35:24,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:24,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:24,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:26,730 INFO L124 PetriNetUnfolderBase]: 7789/12635 cut-off events. [2024-06-28 01:35:26,731 INFO L125 PetriNetUnfolderBase]: For 409557/409569 co-relation queries the response was YES. [2024-06-28 01:35:26,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80350 conditions, 12635 events. 7789/12635 cut-off events. For 409557/409569 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 85811 event pairs, 2380 based on Foata normal form. 4/12273 useless extension candidates. Maximal degree in co-relation 80248. Up to 10932 conditions per place. [2024-06-28 01:35:26,876 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 383 selfloop transitions, 30 changer transitions 0/426 dead transitions. [2024-06-28 01:35:26,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 426 transitions, 6314 flow [2024-06-28 01:35:26,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:26,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:35:26,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:35:26,878 INFO L175 Difference]: Start difference. First operand has 231 places, 374 transitions, 5184 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:35:26,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 426 transitions, 6314 flow [2024-06-28 01:35:27,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 426 transitions, 6225 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:27,727 INFO L231 Difference]: Finished difference. Result has 234 places, 376 transitions, 5244 flow [2024-06-28 01:35:27,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5095, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5244, PETRI_PLACES=234, PETRI_TRANSITIONS=376} [2024-06-28 01:35:27,728 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 180 predicate places. [2024-06-28 01:35:27,728 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 376 transitions, 5244 flow [2024-06-28 01:35:27,728 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) [2024-06-28 01:35:27,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:27,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:27,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:35:27,729 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:27,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:27,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1348467309, now seen corresponding path program 11 times [2024-06-28 01:35:27,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:27,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907370956] [2024-06-28 01:35:27,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:27,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:28,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:28,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907370956] [2024-06-28 01:35:28,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907370956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:28,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:28,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:28,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294848776] [2024-06-28 01:35:28,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:28,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:28,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:28,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:28,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:28,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:28,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 376 transitions, 5244 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) [2024-06-28 01:35:28,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:28,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:28,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:31,223 INFO L124 PetriNetUnfolderBase]: 7799/12635 cut-off events. [2024-06-28 01:35:31,223 INFO L125 PetriNetUnfolderBase]: For 421321/421333 co-relation queries the response was YES. [2024-06-28 01:35:31,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80648 conditions, 12635 events. 7799/12635 cut-off events. For 421321/421333 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 85734 event pairs, 2415 based on Foata normal form. 4/12276 useless extension candidates. Maximal degree in co-relation 80545. Up to 10867 conditions per place. [2024-06-28 01:35:31,388 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 372 selfloop transitions, 47 changer transitions 0/432 dead transitions. [2024-06-28 01:35:31,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 432 transitions, 6444 flow [2024-06-28 01:35:31,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:35:31,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-06-28 01:35:31,389 INFO L175 Difference]: Start difference. First operand has 234 places, 376 transitions, 5244 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:35:31,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 432 transitions, 6444 flow [2024-06-28 01:35:32,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 432 transitions, 6265 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:32,194 INFO L231 Difference]: Finished difference. Result has 237 places, 381 transitions, 5302 flow [2024-06-28 01:35:32,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5065, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5302, PETRI_PLACES=237, PETRI_TRANSITIONS=381} [2024-06-28 01:35:32,194 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 183 predicate places. [2024-06-28 01:35:32,194 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 381 transitions, 5302 flow [2024-06-28 01:35:32,195 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) [2024-06-28 01:35:32,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:32,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:32,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:35:32,195 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:32,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash -451621933, now seen corresponding path program 2 times [2024-06-28 01:35:32,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:32,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94047599] [2024-06-28 01:35:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:32,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:33,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:33,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94047599] [2024-06-28 01:35:33,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94047599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:33,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:33,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:35:33,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287249154] [2024-06-28 01:35:33,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:33,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:35:33,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:33,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:35:33,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:35:33,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:33,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 381 transitions, 5302 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:33,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:33,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:33,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:35,026 INFO L124 PetriNetUnfolderBase]: 7541/12320 cut-off events. [2024-06-28 01:35:35,027 INFO L125 PetriNetUnfolderBase]: For 420735/420934 co-relation queries the response was YES. [2024-06-28 01:35:35,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77518 conditions, 12320 events. 7541/12320 cut-off events. For 420735/420934 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 84299 event pairs, 2437 based on Foata normal form. 121/12014 useless extension candidates. Maximal degree in co-relation 77413. Up to 10708 conditions per place. [2024-06-28 01:35:35,156 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 350 selfloop transitions, 23 changer transitions 0/406 dead transitions. [2024-06-28 01:35:35,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 406 transitions, 6300 flow [2024-06-28 01:35:35,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:35:35,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 01:35:35,166 INFO L175 Difference]: Start difference. First operand has 237 places, 381 transitions, 5302 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:35:35,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 406 transitions, 6300 flow [2024-06-28 01:35:35,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 406 transitions, 6145 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:35,965 INFO L231 Difference]: Finished difference. Result has 238 places, 384 transitions, 5245 flow [2024-06-28 01:35:35,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5149, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5245, PETRI_PLACES=238, PETRI_TRANSITIONS=384} [2024-06-28 01:35:35,965 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-28 01:35:35,966 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 384 transitions, 5245 flow [2024-06-28 01:35:35,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:35,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:35,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:35,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:35:35,966 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:35,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:35,967 INFO L85 PathProgramCache]: Analyzing trace with hash -451177393, now seen corresponding path program 3 times [2024-06-28 01:35:35,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:35,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203355862] [2024-06-28 01:35:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:35,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:36,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:36,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203355862] [2024-06-28 01:35:36,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203355862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:36,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:36,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:35:36,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509473922] [2024-06-28 01:35:36,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:36,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:35:36,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:35:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:35:36,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:36,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 384 transitions, 5245 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:36,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:36,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:36,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:38,916 INFO L124 PetriNetUnfolderBase]: 7535/12313 cut-off events. [2024-06-28 01:35:38,916 INFO L125 PetriNetUnfolderBase]: For 416297/416488 co-relation queries the response was YES. [2024-06-28 01:35:38,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77067 conditions, 12313 events. 7535/12313 cut-off events. For 416297/416488 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 84268 event pairs, 2465 based on Foata normal form. 126/12012 useless extension candidates. Maximal degree in co-relation 76961. Up to 10723 conditions per place. [2024-06-28 01:35:39,040 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 352 selfloop transitions, 18 changer transitions 0/403 dead transitions. [2024-06-28 01:35:39,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 403 transitions, 6075 flow [2024-06-28 01:35:39,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:39,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 01:35:39,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 01:35:39,045 INFO L175 Difference]: Start difference. First operand has 238 places, 384 transitions, 5245 flow. Second operand 7 states and 152 transitions. [2024-06-28 01:35:39,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 403 transitions, 6075 flow [2024-06-28 01:35:39,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 403 transitions, 5918 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:39,728 INFO L231 Difference]: Finished difference. Result has 240 places, 384 transitions, 5130 flow [2024-06-28 01:35:39,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5088, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5130, PETRI_PLACES=240, PETRI_TRANSITIONS=384} [2024-06-28 01:35:39,729 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 186 predicate places. [2024-06-28 01:35:39,729 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 384 transitions, 5130 flow [2024-06-28 01:35:39,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:39,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:39,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:39,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:35:39,734 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:39,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:39,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2029970061, now seen corresponding path program 12 times [2024-06-28 01:35:39,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:39,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916363231] [2024-06-28 01:35:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:39,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:40,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:40,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916363231] [2024-06-28 01:35:40,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916363231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:40,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:40,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:40,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732834061] [2024-06-28 01:35:40,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:40,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:40,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:40,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:40,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:41,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:41,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 384 transitions, 5130 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) [2024-06-28 01:35:41,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:41,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:41,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:43,613 INFO L124 PetriNetUnfolderBase]: 8401/13570 cut-off events. [2024-06-28 01:35:43,613 INFO L125 PetriNetUnfolderBase]: For 439703/439717 co-relation queries the response was YES. [2024-06-28 01:35:43,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86371 conditions, 13570 events. 8401/13570 cut-off events. For 439703/439717 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 92395 event pairs, 2047 based on Foata normal form. 4/13206 useless extension candidates. Maximal degree in co-relation 86265. Up to 10586 conditions per place. [2024-06-28 01:35:43,754 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 324 selfloop transitions, 214 changer transitions 0/552 dead transitions. [2024-06-28 01:35:43,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 552 transitions, 7953 flow [2024-06-28 01:35:43,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:43,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:43,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-28 01:35:43,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:35:43,756 INFO L175 Difference]: Start difference. First operand has 240 places, 384 transitions, 5130 flow. Second operand 10 states and 250 transitions. [2024-06-28 01:35:43,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 552 transitions, 7953 flow [2024-06-28 01:35:44,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 552 transitions, 7876 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:44,600 INFO L231 Difference]: Finished difference. Result has 247 places, 467 transitions, 6882 flow [2024-06-28 01:35:44,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5053, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6882, PETRI_PLACES=247, PETRI_TRANSITIONS=467} [2024-06-28 01:35:44,604 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 193 predicate places. [2024-06-28 01:35:44,604 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 467 transitions, 6882 flow [2024-06-28 01:35:44,604 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) [2024-06-28 01:35:44,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:44,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:44,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:35:44,605 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:44,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:44,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1305364942, now seen corresponding path program 1 times [2024-06-28 01:35:44,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:44,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094494301] [2024-06-28 01:35:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:44,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:45,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:45,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094494301] [2024-06-28 01:35:45,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094494301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:45,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:45,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:35:45,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550376406] [2024-06-28 01:35:45,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:45,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:35:45,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:45,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:35:45,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:35:45,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:45,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 467 transitions, 6882 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:45,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:45,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:45,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:48,118 INFO L124 PetriNetUnfolderBase]: 8530/13891 cut-off events. [2024-06-28 01:35:48,119 INFO L125 PetriNetUnfolderBase]: For 466220/466232 co-relation queries the response was YES. [2024-06-28 01:35:48,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91538 conditions, 13891 events. 8530/13891 cut-off events. For 466220/466232 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 95866 event pairs, 2661 based on Foata normal form. 2/13471 useless extension candidates. Maximal degree in co-relation 91428. Up to 11988 conditions per place. [2024-06-28 01:35:48,268 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 471 selfloop transitions, 49 changer transitions 0/534 dead transitions. [2024-06-28 01:35:48,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 534 transitions, 8497 flow [2024-06-28 01:35:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:35:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:35:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-28 01:35:48,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814 [2024-06-28 01:35:48,269 INFO L175 Difference]: Start difference. First operand has 247 places, 467 transitions, 6882 flow. Second operand 9 states and 199 transitions. [2024-06-28 01:35:48,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 534 transitions, 8497 flow [2024-06-28 01:35:49,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 534 transitions, 8226 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:49,449 INFO L231 Difference]: Finished difference. Result has 253 places, 494 transitions, 7111 flow [2024-06-28 01:35:49,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6622, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7111, PETRI_PLACES=253, PETRI_TRANSITIONS=494} [2024-06-28 01:35:49,450 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 199 predicate places. [2024-06-28 01:35:49,450 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 494 transitions, 7111 flow [2024-06-28 01:35:49,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:49,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:49,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:49,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:35:49,450 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:49,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:49,451 INFO L85 PathProgramCache]: Analyzing trace with hash -457841556, now seen corresponding path program 2 times [2024-06-28 01:35:49,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:49,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963817540] [2024-06-28 01:35:49,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:49,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963817540] [2024-06-28 01:35:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963817540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:50,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:50,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:35:50,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368261438] [2024-06-28 01:35:50,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:50,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:35:50,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:50,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:35:50,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:35:50,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:50,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 494 transitions, 7111 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:50,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:50,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:50,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:52,914 INFO L124 PetriNetUnfolderBase]: 8564/13945 cut-off events. [2024-06-28 01:35:52,915 INFO L125 PetriNetUnfolderBase]: For 477423/477435 co-relation queries the response was YES. [2024-06-28 01:35:53,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93198 conditions, 13945 events. 8564/13945 cut-off events. For 477423/477435 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 96300 event pairs, 2632 based on Foata normal form. 2/13523 useless extension candidates. Maximal degree in co-relation 93084. Up to 11994 conditions per place. [2024-06-28 01:35:53,089 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 462 selfloop transitions, 51 changer transitions 0/527 dead transitions. [2024-06-28 01:35:53,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 527 transitions, 8351 flow [2024-06-28 01:35:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:53,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:35:53,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 01:35:53,090 INFO L175 Difference]: Start difference. First operand has 253 places, 494 transitions, 7111 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:35:53,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 527 transitions, 8351 flow [2024-06-28 01:35:53,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 527 transitions, 8252 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 01:35:53,894 INFO L231 Difference]: Finished difference. Result has 256 places, 497 transitions, 7189 flow [2024-06-28 01:35:53,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7020, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7189, PETRI_PLACES=256, PETRI_TRANSITIONS=497} [2024-06-28 01:35:53,895 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 202 predicate places. [2024-06-28 01:35:53,895 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 497 transitions, 7189 flow [2024-06-28 01:35:53,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:53,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:53,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:53,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:35:53,895 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:53,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:53,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1950462838, now seen corresponding path program 3 times [2024-06-28 01:35:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:53,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589604677] [2024-06-28 01:35:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:53,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:54,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:54,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589604677] [2024-06-28 01:35:54,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589604677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:54,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:54,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:35:54,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831498860] [2024-06-28 01:35:54,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:54,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:35:54,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:54,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:35:54,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:35:54,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:35:54,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 497 transitions, 7189 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:54,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:54,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:35:54,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:57,319 INFO L124 PetriNetUnfolderBase]: 8598/13992 cut-off events. [2024-06-28 01:35:57,320 INFO L125 PetriNetUnfolderBase]: For 494809/494821 co-relation queries the response was YES. [2024-06-28 01:35:57,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94606 conditions, 13992 events. 8598/13992 cut-off events. For 494809/494821 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 96593 event pairs, 2662 based on Foata normal form. 2/13569 useless extension candidates. Maximal degree in co-relation 94492. Up to 11954 conditions per place. [2024-06-28 01:35:57,528 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 457 selfloop transitions, 62 changer transitions 0/533 dead transitions. [2024-06-28 01:35:57,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 533 transitions, 8617 flow [2024-06-28 01:35:57,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:35:57,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:35:57,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:35:57,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-06-28 01:35:57,529 INFO L175 Difference]: Start difference. First operand has 256 places, 497 transitions, 7189 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:35:57,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 533 transitions, 8617 flow [2024-06-28 01:35:58,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 533 transitions, 8476 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 01:35:58,657 INFO L231 Difference]: Finished difference. Result has 258 places, 503 transitions, 7286 flow [2024-06-28 01:35:58,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7062, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7286, PETRI_PLACES=258, PETRI_TRANSITIONS=503} [2024-06-28 01:35:58,658 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-06-28 01:35:58,658 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 503 transitions, 7286 flow [2024-06-28 01:35:58,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:58,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:58,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:58,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:35:58,658 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:35:58,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1950463024, now seen corresponding path program 1 times [2024-06-28 01:35:58,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:58,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870344656] [2024-06-28 01:35:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:58,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:59,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:59,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870344656] [2024-06-28 01:35:59,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870344656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:59,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:59,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:35:59,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418600414] [2024-06-28 01:35:59,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:59,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:35:59,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:59,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:35:59,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:35:59,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:35:59,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 503 transitions, 7286 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:59,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:59,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:35:59,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:02,071 INFO L124 PetriNetUnfolderBase]: 8909/14458 cut-off events. [2024-06-28 01:36:02,071 INFO L125 PetriNetUnfolderBase]: For 498316/498316 co-relation queries the response was YES. [2024-06-28 01:36:02,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96640 conditions, 14458 events. 8909/14458 cut-off events. For 498316/498316 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 99192 event pairs, 2806 based on Foata normal form. 1/14036 useless extension candidates. Maximal degree in co-relation 96525. Up to 12617 conditions per place. [2024-06-28 01:36:02,250 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 490 selfloop transitions, 40 changer transitions 0/538 dead transitions. [2024-06-28 01:36:02,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 538 transitions, 8710 flow [2024-06-28 01:36:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:36:02,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-28 01:36:02,251 INFO L175 Difference]: Start difference. First operand has 258 places, 503 transitions, 7286 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:36:02,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 538 transitions, 8710 flow [2024-06-28 01:36:03,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 538 transitions, 8632 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:03,127 INFO L231 Difference]: Finished difference. Result has 262 places, 509 transitions, 7372 flow [2024-06-28 01:36:03,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7208, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7372, PETRI_PLACES=262, PETRI_TRANSITIONS=509} [2024-06-28 01:36:03,128 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 208 predicate places. [2024-06-28 01:36:03,128 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 509 transitions, 7372 flow [2024-06-28 01:36:03,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:03,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:03,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:03,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:36:03,129 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:03,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash 47300220, now seen corresponding path program 2 times [2024-06-28 01:36:03,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:03,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407441533] [2024-06-28 01:36:03,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:03,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:03,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:03,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407441533] [2024-06-28 01:36:03,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407441533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:03,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:03,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:03,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809173593] [2024-06-28 01:36:03,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:03,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:03,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:03,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:03,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:36:03,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 509 transitions, 7372 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:03,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:03,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:36:03,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:06,471 INFO L124 PetriNetUnfolderBase]: 8926/14479 cut-off events. [2024-06-28 01:36:06,471 INFO L125 PetriNetUnfolderBase]: For 514834/514836 co-relation queries the response was YES. [2024-06-28 01:36:06,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97859 conditions, 14479 events. 8926/14479 cut-off events. For 514834/514836 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 99361 event pairs, 2794 based on Foata normal form. 3/14060 useless extension candidates. Maximal degree in co-relation 97742. Up to 12635 conditions per place. [2024-06-28 01:36:06,651 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 487 selfloop transitions, 44 changer transitions 0/539 dead transitions. [2024-06-28 01:36:06,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 539 transitions, 8764 flow [2024-06-28 01:36:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 01:36:06,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-28 01:36:06,652 INFO L175 Difference]: Start difference. First operand has 262 places, 509 transitions, 7372 flow. Second operand 7 states and 153 transitions. [2024-06-28 01:36:06,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 539 transitions, 8764 flow [2024-06-28 01:36:07,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 539 transitions, 8693 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:07,814 INFO L231 Difference]: Finished difference. Result has 266 places, 512 transitions, 7438 flow [2024-06-28 01:36:07,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7309, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7438, PETRI_PLACES=266, PETRI_TRANSITIONS=512} [2024-06-28 01:36:07,815 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 212 predicate places. [2024-06-28 01:36:07,815 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 512 transitions, 7438 flow [2024-06-28 01:36:07,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:07,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:07,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:07,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:36:07,816 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:07,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2127594358, now seen corresponding path program 4 times [2024-06-28 01:36:07,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:07,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752782824] [2024-06-28 01:36:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:08,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:08,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752782824] [2024-06-28 01:36:08,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752782824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:08,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:08,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:08,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936802081] [2024-06-28 01:36:08,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:08,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:08,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:08,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:08,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:08,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:36:08,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 512 transitions, 7438 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:08,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:08,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:36:08,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:11,276 INFO L124 PetriNetUnfolderBase]: 8657/14053 cut-off events. [2024-06-28 01:36:11,276 INFO L125 PetriNetUnfolderBase]: For 525292/525346 co-relation queries the response was YES. [2024-06-28 01:36:11,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96177 conditions, 14053 events. 8657/14053 cut-off events. For 525292/525346 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 96706 event pairs, 2689 based on Foata normal form. 2/13621 useless extension candidates. Maximal degree in co-relation 96058. Up to 12018 conditions per place. [2024-06-28 01:36:11,476 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 460 selfloop transitions, 62 changer transitions 0/539 dead transitions. [2024-06-28 01:36:11,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 539 transitions, 8662 flow [2024-06-28 01:36:11,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:11,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:11,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:36:11,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 01:36:11,478 INFO L175 Difference]: Start difference. First operand has 266 places, 512 transitions, 7438 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:36:11,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 539 transitions, 8662 flow [2024-06-28 01:36:12,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 539 transitions, 8545 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 01:36:12,881 INFO L231 Difference]: Finished difference. Result has 269 places, 512 transitions, 7451 flow [2024-06-28 01:36:12,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7321, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7451, PETRI_PLACES=269, PETRI_TRANSITIONS=512} [2024-06-28 01:36:12,882 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 215 predicate places. [2024-06-28 01:36:12,882 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 512 transitions, 7451 flow [2024-06-28 01:36:12,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:12,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:12,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:12,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:36:12,883 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:12,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2127594544, now seen corresponding path program 3 times [2024-06-28 01:36:12,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:12,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355494653] [2024-06-28 01:36:12,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:12,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:13,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355494653] [2024-06-28 01:36:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355494653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:13,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:13,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:13,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133944027] [2024-06-28 01:36:13,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:13,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:13,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:13,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:13,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:13,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:36:13,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 512 transitions, 7451 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:13,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:13,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:36:13,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:17,057 INFO L124 PetriNetUnfolderBase]: 8917/14471 cut-off events. [2024-06-28 01:36:17,057 INFO L125 PetriNetUnfolderBase]: For 536716/536718 co-relation queries the response was YES. [2024-06-28 01:36:17,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98166 conditions, 14471 events. 8917/14471 cut-off events. For 536716/536718 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 99367 event pairs, 2795 based on Foata normal form. 3/14051 useless extension candidates. Maximal degree in co-relation 98046. Up to 12624 conditions per place. [2024-06-28 01:36:17,238 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 487 selfloop transitions, 43 changer transitions 0/538 dead transitions. [2024-06-28 01:36:17,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 538 transitions, 8693 flow [2024-06-28 01:36:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 01:36:17,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-28 01:36:17,240 INFO L175 Difference]: Start difference. First operand has 269 places, 512 transitions, 7451 flow. Second operand 7 states and 153 transitions. [2024-06-28 01:36:17,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 538 transitions, 8693 flow [2024-06-28 01:36:18,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 538 transitions, 8504 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:36:18,154 INFO L231 Difference]: Finished difference. Result has 270 places, 512 transitions, 7354 flow [2024-06-28 01:36:18,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7262, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7354, PETRI_PLACES=270, PETRI_TRANSITIONS=512} [2024-06-28 01:36:18,154 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 216 predicate places. [2024-06-28 01:36:18,155 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 512 transitions, 7354 flow [2024-06-28 01:36:18,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:18,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:18,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:18,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:36:18,155 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:18,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:18,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1815292087, now seen corresponding path program 1 times [2024-06-28 01:36:18,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:18,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958521628] [2024-06-28 01:36:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:18,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:19,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:19,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958521628] [2024-06-28 01:36:19,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958521628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:19,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:19,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:36:19,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609436870] [2024-06-28 01:36:19,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:19,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:36:19,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:19,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:36:19,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:36:20,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:36:20,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 512 transitions, 7354 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:20,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:20,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:36:20,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:23,310 INFO L124 PetriNetUnfolderBase]: 8755/14152 cut-off events. [2024-06-28 01:36:23,310 INFO L125 PetriNetUnfolderBase]: For 570996/571056 co-relation queries the response was YES. [2024-06-28 01:36:23,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97953 conditions, 14152 events. 8755/14152 cut-off events. For 570996/571056 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 96955 event pairs, 2467 based on Foata normal form. 16/13751 useless extension candidates. Maximal degree in co-relation 97832. Up to 11678 conditions per place. [2024-06-28 01:36:23,454 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 428 selfloop transitions, 147 changer transitions 0/592 dead transitions. [2024-06-28 01:36:23,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 592 transitions, 9164 flow [2024-06-28 01:36:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:23,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:23,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-28 01:36:23,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-28 01:36:23,455 INFO L175 Difference]: Start difference. First operand has 270 places, 512 transitions, 7354 flow. Second operand 10 states and 242 transitions. [2024-06-28 01:36:23,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 592 transitions, 9164 flow [2024-06-28 01:36:24,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 592 transitions, 9040 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:36:24,396 INFO L231 Difference]: Finished difference. Result has 275 places, 518 transitions, 7775 flow [2024-06-28 01:36:24,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7230, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7775, PETRI_PLACES=275, PETRI_TRANSITIONS=518} [2024-06-28 01:36:24,397 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 221 predicate places. [2024-06-28 01:36:24,397 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 518 transitions, 7775 flow [2024-06-28 01:36:24,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:24,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:24,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:24,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:36:24,397 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:24,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:24,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1760242033, now seen corresponding path program 1 times [2024-06-28 01:36:24,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:24,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802271035] [2024-06-28 01:36:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:24,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:25,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:25,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802271035] [2024-06-28 01:36:25,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802271035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:25,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:25,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:25,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299693834] [2024-06-28 01:36:25,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:25,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:25,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:25,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:25,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:25,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:36:25,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 518 transitions, 7775 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:25,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:25,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:36:25,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:28,459 INFO L124 PetriNetUnfolderBase]: 8797/14262 cut-off events. [2024-06-28 01:36:28,459 INFO L125 PetriNetUnfolderBase]: For 591888/591950 co-relation queries the response was YES. [2024-06-28 01:36:28,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100498 conditions, 14262 events. 8797/14262 cut-off events. For 591888/591950 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 98406 event pairs, 2508 based on Foata normal form. 7/13826 useless extension candidates. Maximal degree in co-relation 100374. Up to 12224 conditions per place. [2024-06-28 01:36:28,781 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 505 selfloop transitions, 57 changer transitions 0/579 dead transitions. [2024-06-28 01:36:28,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 579 transitions, 9651 flow [2024-06-28 01:36:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:28,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:28,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:36:28,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-28 01:36:28,782 INFO L175 Difference]: Start difference. First operand has 275 places, 518 transitions, 7775 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:36:28,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 579 transitions, 9651 flow [2024-06-28 01:36:29,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 579 transitions, 9358 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-28 01:36:29,764 INFO L231 Difference]: Finished difference. Result has 279 places, 538 transitions, 7914 flow [2024-06-28 01:36:29,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7482, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7914, PETRI_PLACES=279, PETRI_TRANSITIONS=538} [2024-06-28 01:36:29,764 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 225 predicate places. [2024-06-28 01:36:29,764 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 538 transitions, 7914 flow [2024-06-28 01:36:29,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:29,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:29,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:29,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:36:29,765 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:29,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:29,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1754528113, now seen corresponding path program 2 times [2024-06-28 01:36:29,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:29,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519676636] [2024-06-28 01:36:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:29,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:30,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:30,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519676636] [2024-06-28 01:36:30,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519676636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:30,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:30,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:30,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547260322] [2024-06-28 01:36:30,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:30,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:30,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:30,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:30,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:30,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:36:30,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 538 transitions, 7914 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:30,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:30,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:36:30,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:33,769 INFO L124 PetriNetUnfolderBase]: 8830/14312 cut-off events. [2024-06-28 01:36:33,769 INFO L125 PetriNetUnfolderBase]: For 600415/600477 co-relation queries the response was YES. [2024-06-28 01:36:33,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102031 conditions, 14312 events. 8830/14312 cut-off events. For 600415/600477 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 98853 event pairs, 2516 based on Foata normal form. 7/13874 useless extension candidates. Maximal degree in co-relation 101903. Up to 12263 conditions per place. [2024-06-28 01:36:33,924 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 497 selfloop transitions, 65 changer transitions 0/579 dead transitions. [2024-06-28 01:36:33,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 579 transitions, 9622 flow [2024-06-28 01:36:33,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:36:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:36:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:36:33,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:36:33,925 INFO L175 Difference]: Start difference. First operand has 279 places, 538 transitions, 7914 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:36:33,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 579 transitions, 9622 flow [2024-06-28 01:36:35,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 579 transitions, 9502 flow, removed 59 selfloop flow, removed 1 redundant places. [2024-06-28 01:36:35,281 INFO L231 Difference]: Finished difference. Result has 285 places, 544 transitions, 8037 flow [2024-06-28 01:36:35,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7830, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8037, PETRI_PLACES=285, PETRI_TRANSITIONS=544} [2024-06-28 01:36:35,282 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 231 predicate places. [2024-06-28 01:36:35,282 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 544 transitions, 8037 flow [2024-06-28 01:36:35,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:35,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:35,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:35,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:36:35,282 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:35,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash 926304257, now seen corresponding path program 2 times [2024-06-28 01:36:35,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:35,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756958286] [2024-06-28 01:36:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:37,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:37,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:37,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756958286] [2024-06-28 01:36:37,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756958286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:37,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:37,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:36:37,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190123172] [2024-06-28 01:36:37,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:37,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:36:37,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:37,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:36:37,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:36:37,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:36:37,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 544 transitions, 8037 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:37,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:37,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:36:37,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:40,756 INFO L124 PetriNetUnfolderBase]: 8943/14313 cut-off events. [2024-06-28 01:36:40,757 INFO L125 PetriNetUnfolderBase]: For 639430/639464 co-relation queries the response was YES. [2024-06-28 01:36:40,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103896 conditions, 14313 events. 8943/14313 cut-off events. For 639430/639464 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 96856 event pairs, 2217 based on Foata normal form. 12/13941 useless extension candidates. Maximal degree in co-relation 103765. Up to 10812 conditions per place. [2024-06-28 01:36:41,130 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 308 selfloop transitions, 313 changer transitions 0/638 dead transitions. [2024-06-28 01:36:41,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 638 transitions, 10109 flow [2024-06-28 01:36:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:41,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-28 01:36:41,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-28 01:36:41,132 INFO L175 Difference]: Start difference. First operand has 285 places, 544 transitions, 8037 flow. Second operand 10 states and 249 transitions. [2024-06-28 01:36:41,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 638 transitions, 10109 flow [2024-06-28 01:36:42,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 638 transitions, 10018 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:42,415 INFO L231 Difference]: Finished difference. Result has 295 places, 555 transitions, 8984 flow [2024-06-28 01:36:42,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7946, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=303, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8984, PETRI_PLACES=295, PETRI_TRANSITIONS=555} [2024-06-28 01:36:42,416 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 241 predicate places. [2024-06-28 01:36:42,416 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 555 transitions, 8984 flow [2024-06-28 01:36:42,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:42,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:42,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:42,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:36:42,417 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:42,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:42,417 INFO L85 PathProgramCache]: Analyzing trace with hash 760070477, now seen corresponding path program 3 times [2024-06-28 01:36:42,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:42,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677858288] [2024-06-28 01:36:42,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:42,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:44,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:44,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677858288] [2024-06-28 01:36:44,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677858288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:44,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:44,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:36:44,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849728952] [2024-06-28 01:36:44,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:44,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:36:44,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:44,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:36:44,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:36:44,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:36:44,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 555 transitions, 8984 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:44,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:44,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:36:44,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:47,803 INFO L124 PetriNetUnfolderBase]: 9044/14542 cut-off events. [2024-06-28 01:36:47,803 INFO L125 PetriNetUnfolderBase]: For 694023/694057 co-relation queries the response was YES. [2024-06-28 01:36:47,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109563 conditions, 14542 events. 9044/14542 cut-off events. For 694023/694057 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 99324 event pairs, 2288 based on Foata normal form. 12/14149 useless extension candidates. Maximal degree in co-relation 109428. Up to 11047 conditions per place. [2024-06-28 01:36:47,968 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 316 selfloop transitions, 304 changer transitions 0/637 dead transitions. [2024-06-28 01:36:47,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 637 transitions, 10975 flow [2024-06-28 01:36:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:47,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:47,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-28 01:36:47,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229166666666667 [2024-06-28 01:36:47,970 INFO L175 Difference]: Start difference. First operand has 295 places, 555 transitions, 8984 flow. Second operand 10 states and 251 transitions. [2024-06-28 01:36:47,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 637 transitions, 10975 flow [2024-06-28 01:36:49,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 637 transitions, 10658 flow, removed 75 selfloop flow, removed 3 redundant places. [2024-06-28 01:36:49,118 INFO L231 Difference]: Finished difference. Result has 304 places, 559 transitions, 9514 flow [2024-06-28 01:36:49,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8677, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9514, PETRI_PLACES=304, PETRI_TRANSITIONS=559} [2024-06-28 01:36:49,118 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 250 predicate places. [2024-06-28 01:36:49,119 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 559 transitions, 9514 flow [2024-06-28 01:36:49,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:49,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:49,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:49,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:36:49,119 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:49,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:49,120 INFO L85 PathProgramCache]: Analyzing trace with hash 932791007, now seen corresponding path program 4 times [2024-06-28 01:36:49,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:49,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702009196] [2024-06-28 01:36:49,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:49,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:50,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:50,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702009196] [2024-06-28 01:36:50,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702009196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:50,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:50,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:36:50,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031495196] [2024-06-28 01:36:50,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:50,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:36:50,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:50,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:36:50,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:36:50,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:36:50,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 559 transitions, 9514 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:50,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:50,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:36:50,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:54,696 INFO L124 PetriNetUnfolderBase]: 9153/14677 cut-off events. [2024-06-28 01:36:54,696 INFO L125 PetriNetUnfolderBase]: For 722893/722927 co-relation queries the response was YES. [2024-06-28 01:36:54,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112776 conditions, 14677 events. 9153/14677 cut-off events. For 722893/722927 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 100100 event pairs, 2216 based on Foata normal form. 12/14297 useless extension candidates. Maximal degree in co-relation 112637. Up to 10889 conditions per place. [2024-06-28 01:36:54,861 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 301 selfloop transitions, 326 changer transitions 0/644 dead transitions. [2024-06-28 01:36:54,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 644 transitions, 11587 flow [2024-06-28 01:36:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:54,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2024-06-28 01:36:54,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-06-28 01:36:54,863 INFO L175 Difference]: Start difference. First operand has 304 places, 559 transitions, 9514 flow. Second operand 10 states and 249 transitions. [2024-06-28 01:36:54,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 644 transitions, 11587 flow [2024-06-28 01:36:56,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 644 transitions, 11107 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-28 01:36:56,340 INFO L231 Difference]: Finished difference. Result has 311 places, 564 transitions, 10000 flow [2024-06-28 01:36:56,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9034, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10000, PETRI_PLACES=311, PETRI_TRANSITIONS=564} [2024-06-28 01:36:56,341 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 257 predicate places. [2024-06-28 01:36:56,341 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 564 transitions, 10000 flow [2024-06-28 01:36:56,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:56,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:56,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:56,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:36:56,341 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:36:56,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:56,342 INFO L85 PathProgramCache]: Analyzing trace with hash -525224429, now seen corresponding path program 1 times [2024-06-28 01:36:56,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:56,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560977423] [2024-06-28 01:36:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:56,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:57,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:57,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560977423] [2024-06-28 01:36:57,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560977423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:57,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:57,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:36:57,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622202] [2024-06-28 01:36:57,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:57,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:36:57,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:57,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:36:57,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:36:57,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:36:57,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 564 transitions, 10000 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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) [2024-06-28 01:36:57,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:57,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:36:57,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand