./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix028_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix028_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix028_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix028_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:30:51,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:30:51,247 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:30:51,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:30:51,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:30:51,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:30:51,266 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:30:51,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:30:51,267 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:30:51,267 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:30:51,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:30:51,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:30:51,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:30:51,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:30:51,269 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:30:51,269 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:30:51,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:30:51,270 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:30:51,270 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:30:51,270 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:30:51,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:30:51,271 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:30:51,271 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:30:51,271 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:30:51,271 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:30:51,272 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:30:51,272 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:30:51,272 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:30:51,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:30:51,273 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:30:51,274 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:30:51,274 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:30:51,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:30:51,275 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:30:51,275 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:30:51,275 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:30:51,275 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:30:51,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:30:51,276 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:30:51,276 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:30:51,276 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:30:51,276 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:30:51,276 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:30:51,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:30:51,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:30:51,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:30:51,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:30:51,505 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:30:51,505 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:30:51,506 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix028_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 01:30:51,672 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:30:51,673 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:30:51,673 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix028_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:30:52,797 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:30:53,021 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:30:53,026 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix028_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:30:53,046 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/566cee2b8/a3cae5cc4ceb415e93bdd340cdb37827/FLAG82e336f9a [2024-06-28 01:30:53,057 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/566cee2b8/a3cae5cc4ceb415e93bdd340cdb37827 [2024-06-28 01:30:53,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:30:53,063 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:30:53,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:30:53,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:30:53,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:30:53,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:30:51" (1/2) ... [2024-06-28 01:30:53,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de55d9d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:53, skipping insertion in model container [2024-06-28 01:30:53,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:30:51" (1/2) ... [2024-06-28 01:30:53,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@52d25e4e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:30:53, skipping insertion in model container [2024-06-28 01:30:53,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:30:53" (2/2) ... [2024-06-28 01:30:53,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de55d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53, skipping insertion in model container [2024-06-28 01:30:53,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:30:53" (2/2) ... [2024-06-28 01:30:53,071 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:30:53,133 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:30:53,135 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] (((((((((((((((((! multithreaded || z$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-28 01:30:53,135 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((! multithreaded || z$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-28 01:30:53,135 INFO L97 edCorrectnessWitness]: Location invariant before [L842-L842] (((((((((((((((((! multithreaded || z$r_buff0_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-28 01:30:53,135 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:30:53,136 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-28 01:30:53,174 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:30:53,317 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/mix028_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-28 01:30:53,506 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:30:53,553 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:30:53,582 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/mix028_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:30:53,657 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:30:53,690 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:30:53,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53 WrapperNode [2024-06-28 01:30:53,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:30:53,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:30:53,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:30:53,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:30:53,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,746 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-28 01:30:53,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:30:53,748 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:30:53,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:30:53,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:30:53,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,759 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,778 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 01:30:53,786 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,794 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,803 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,805 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:30:53,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:30:53,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:30:53,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:30:53,822 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (1/1) ... [2024-06-28 01:30:53,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:30:53,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:30:53,873 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 01:30:53,892 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 01:30:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:30:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:30:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:30:53,904 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:30:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:30:53,904 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:30:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:30:53,905 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:30:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:30:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:30:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:30:53,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:30:53,907 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 01:30:54,037 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:30:54,039 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:30:54,366 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:30:54,366 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:30:54,510 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:30:54,510 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:30:54,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:30:54 BoogieIcfgContainer [2024-06-28 01:30:54,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:30:54,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:30:54,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:30:54,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:30:54,516 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:30:51" (1/4) ... [2024-06-28 01:30:54,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4248afb0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:30:54, skipping insertion in model container [2024-06-28 01:30:54,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:30:53" (2/4) ... [2024-06-28 01:30:54,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4248afb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:30:54, skipping insertion in model container [2024-06-28 01:30:54,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:30:53" (3/4) ... [2024-06-28 01:30:54,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4248afb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:30:54, skipping insertion in model container [2024-06-28 01:30:54,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:30:54" (4/4) ... [2024-06-28 01:30:54,520 INFO L112 eAbstractionObserver]: Analyzing ICFG mix028_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:30:54,533 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:30:54,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:30:54,534 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:30:54,575 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:30:54,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:30:54,638 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:30:54,638 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:30:54,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:30:54,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:30:54,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-28 01:30:54,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:30:54,665 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;@1404520a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:30:54,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:30:54,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:30:54,671 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:30:54,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:30:54,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:54,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:30:54,672 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 01:30:54,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash 351062661, now seen corresponding path program 1 times [2024-06-28 01:30:54,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:54,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884186146] [2024-06-28 01:30:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:54,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:55,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884186146] [2024-06-28 01:30:55,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884186146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:55,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:55,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:30:55,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386702465] [2024-06-28 01:30:55,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:55,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:30:55,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:55,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:30:55,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:30:55,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:30:55,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:55,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:55,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:30:55,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:56,648 INFO L124 PetriNetUnfolderBase]: 4500/7408 cut-off events. [2024-06-28 01:30:56,648 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-28 01:30:56,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13971 conditions, 7408 events. 4500/7408 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 48858 event pairs, 3527 based on Foata normal form. 211/7038 useless extension candidates. Maximal degree in co-relation 13959. Up to 6446 conditions per place. [2024-06-28 01:30:56,739 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:30:56,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 225 flow [2024-06-28 01:30:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:30:56,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:30:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-28 01:30:56,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:30:56,750 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 94 transitions. [2024-06-28 01:30:56,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 225 flow [2024-06-28 01:30:56,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:30:56,758 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-28 01:30:56,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 01:30:56,763 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:30:56,763 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-28 01:30:56,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:56,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:56,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:30:56,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:30:56,764 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 01:30:56,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:56,764 INFO L85 PathProgramCache]: Analyzing trace with hash 351063412, now seen corresponding path program 1 times [2024-06-28 01:30:56,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:56,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146683136] [2024-06-28 01:30:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:56,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:56,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:56,807 INFO 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 01:30:56,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:56,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146683136] [2024-06-28 01:30:56,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146683136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:56,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:56,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:30:56,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037642166] [2024-06-28 01:30:56,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:56,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:30:56,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:56,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:30:56,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:30:56,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-06-28 01:30:56,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 01:30:56,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:56,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-06-28 01:30:56,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:57,050 INFO L124 PetriNetUnfolderBase]: 950/1800 cut-off events. [2024-06-28 01:30:57,051 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:30:57,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 1800 events. 950/1800 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11865 event pairs, 463 based on Foata normal form. 0/1694 useless extension candidates. Maximal degree in co-relation 3490. Up to 1207 conditions per place. [2024-06-28 01:30:57,061 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 35 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-06-28 01:30:57,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 232 flow [2024-06-28 01:30:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:30:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:30:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-06-28 01:30:57,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7801418439716312 [2024-06-28 01:30:57,065 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 3 states and 110 transitions. [2024-06-28 01:30:57,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 232 flow [2024-06-28 01:30:57,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:30:57,070 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 122 flow [2024-06-28 01:30:57,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 01:30:57,071 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:30:57,071 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 122 flow [2024-06-28 01:30:57,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 01:30:57,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:57,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:57,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:30:57,075 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 01:30:57,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:57,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1930490349, now seen corresponding path program 1 times [2024-06-28 01:30:57,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:57,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503306914] [2024-06-28 01:30:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:57,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:57,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:57,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503306914] [2024-06-28 01:30:57,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503306914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:57,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:57,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:30:57,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877774325] [2024-06-28 01:30:57,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:57,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:30:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:57,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:30:57,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:30:57,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:30:57,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:57,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:57,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:30:57,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:58,167 INFO L124 PetriNetUnfolderBase]: 3821/6190 cut-off events. [2024-06-28 01:30:58,168 INFO L125 PetriNetUnfolderBase]: For 1382/1382 co-relation queries the response was YES. [2024-06-28 01:30:58,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13115 conditions, 6190 events. 3821/6190 cut-off events. For 1382/1382 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38425 event pairs, 2504 based on Foata normal form. 3/5974 useless extension candidates. Maximal degree in co-relation 13102. Up to 5470 conditions per place. [2024-06-28 01:30:58,191 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 50 selfloop transitions, 8 changer transitions 2/71 dead transitions. [2024-06-28 01:30:58,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 314 flow [2024-06-28 01:30:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:30:58,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:30:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-28 01:30:58,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-06-28 01:30:58,193 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 122 flow. Second operand 4 states and 116 transitions. [2024-06-28 01:30:58,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 314 flow [2024-06-28 01:30:58,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:30:58,195 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 183 flow [2024-06-28 01:30:58,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 01:30:58,195 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-28 01:30:58,196 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 183 flow [2024-06-28 01:30:58,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:58,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:58,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:58,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:30:58,196 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 01:30:58,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:58,197 INFO L85 PathProgramCache]: Analyzing trace with hash 284341944, now seen corresponding path program 1 times [2024-06-28 01:30:58,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:58,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348213928] [2024-06-28 01:30:58,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:58,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:58,764 INFO 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 01:30:58,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:58,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348213928] [2024-06-28 01:30:58,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348213928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:58,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:58,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:30:58,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922600310] [2024-06-28 01:30:58,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:58,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:30:58,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:58,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:30:58,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:30:58,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:30:58,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:58,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:58,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:30:58,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:59,322 INFO L124 PetriNetUnfolderBase]: 3310/5490 cut-off events. [2024-06-28 01:30:59,322 INFO L125 PetriNetUnfolderBase]: For 2314/2314 co-relation queries the response was YES. [2024-06-28 01:30:59,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12555 conditions, 5490 events. 3310/5490 cut-off events. For 2314/2314 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 34341 event pairs, 1652 based on Foata normal form. 5/5315 useless extension candidates. Maximal degree in co-relation 12540. Up to 4663 conditions per place. [2024-06-28 01:30:59,352 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 66 selfloop transitions, 18 changer transitions 0/95 dead transitions. [2024-06-28 01:30:59,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 95 transitions, 493 flow [2024-06-28 01:30:59,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:30:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:30:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-06-28 01:30:59,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6340425531914894 [2024-06-28 01:30:59,354 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 183 flow. Second operand 5 states and 149 transitions. [2024-06-28 01:30:59,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 95 transitions, 493 flow [2024-06-28 01:30:59,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 95 transitions, 482 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:30:59,358 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 297 flow [2024-06-28 01:30:59,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-06-28 01:30:59,358 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-06-28 01:30:59,359 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 297 flow [2024-06-28 01:30:59,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:59,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:59,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:59,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:30:59,359 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 01:30:59,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash -440268798, now seen corresponding path program 1 times [2024-06-28 01:30:59,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:59,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380449970] [2024-06-28 01:30:59,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:59,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:00,193 INFO 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 01:31:00,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:00,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380449970] [2024-06-28 01:31:00,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380449970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:00,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:00,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:31:00,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872628009] [2024-06-28 01:31:00,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:00,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:31:00,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:31:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:31:00,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:31:00,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:31:00,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:00,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:31:00,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:00,846 INFO L124 PetriNetUnfolderBase]: 3332/5127 cut-off events. [2024-06-28 01:31:00,846 INFO L125 PetriNetUnfolderBase]: For 5556/5559 co-relation queries the response was YES. [2024-06-28 01:31:00,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14262 conditions, 5127 events. 3332/5127 cut-off events. For 5556/5559 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 29403 event pairs, 1216 based on Foata normal form. 7/5096 useless extension candidates. Maximal degree in co-relation 14243. Up to 4629 conditions per place. [2024-06-28 01:31:00,871 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 78 selfloop transitions, 33 changer transitions 0/122 dead transitions. [2024-06-28 01:31:00,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 122 transitions, 751 flow [2024-06-28 01:31:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-28 01:31:00,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6312056737588653 [2024-06-28 01:31:00,873 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 297 flow. Second operand 6 states and 178 transitions. [2024-06-28 01:31:00,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 122 transitions, 751 flow [2024-06-28 01:31:00,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 122 transitions, 743 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 01:31:00,878 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 507 flow [2024-06-28 01:31:00,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=507, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2024-06-28 01:31:00,879 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-06-28 01:31:00,879 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 507 flow [2024-06-28 01:31:00,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:31:00,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:00,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:00,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:31:00,880 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:00,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:00,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1625277929, now seen corresponding path program 1 times [2024-06-28 01:31:00,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:00,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981893306] [2024-06-28 01:31:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:00,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:01,723 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 01:31:01,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:01,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981893306] [2024-06-28 01:31:01,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981893306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:01,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:01,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:01,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831851215] [2024-06-28 01:31:01,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:01,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:01,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:01,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:01,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:01,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:31:01,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 78 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 01:31:01,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:01,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:31:01,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:02,577 INFO L124 PetriNetUnfolderBase]: 3359/5650 cut-off events. [2024-06-28 01:31:02,578 INFO L125 PetriNetUnfolderBase]: For 11455/11461 co-relation queries the response was YES. [2024-06-28 01:31:02,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17238 conditions, 5650 events. 3359/5650 cut-off events. For 11455/11461 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 35948 event pairs, 1400 based on Foata normal form. 14/5483 useless extension candidates. Maximal degree in co-relation 17213. Up to 4594 conditions per place. [2024-06-28 01:31:02,610 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 85 selfloop transitions, 36 changer transitions 0/132 dead transitions. [2024-06-28 01:31:02,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 132 transitions, 947 flow [2024-06-28 01:31:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:02,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-28 01:31:02,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6139817629179332 [2024-06-28 01:31:02,612 INFO L175 Difference]: Start difference. First operand has 70 places, 78 transitions, 507 flow. Second operand 7 states and 202 transitions. [2024-06-28 01:31:02,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 132 transitions, 947 flow [2024-06-28 01:31:02,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 132 transitions, 913 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-06-28 01:31:02,629 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 577 flow [2024-06-28 01:31:02,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=577, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-06-28 01:31:02,632 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2024-06-28 01:31:02,632 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 577 flow [2024-06-28 01:31:02,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 01:31:02,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:02,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:02,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:31:02,633 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 01:31:02,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash -885212333, now seen corresponding path program 1 times [2024-06-28 01:31:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:02,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168103806] [2024-06-28 01:31:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:02,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:03,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:03,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168103806] [2024-06-28 01:31:03,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168103806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:03,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:03,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:31:03,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61626389] [2024-06-28 01:31:03,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:03,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:31:03,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:03,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:31:03,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:31:03,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:03,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:03,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:03,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:03,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:03,936 INFO L124 PetriNetUnfolderBase]: 3905/6513 cut-off events. [2024-06-28 01:31:03,937 INFO L125 PetriNetUnfolderBase]: For 14016/14016 co-relation queries the response was YES. [2024-06-28 01:31:03,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19809 conditions, 6513 events. 3905/6513 cut-off events. For 14016/14016 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41613 event pairs, 1648 based on Foata normal form. 2/6327 useless extension candidates. Maximal degree in co-relation 19780. Up to 5591 conditions per place. [2024-06-28 01:31:03,970 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 74 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-28 01:31:03,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 97 transitions, 793 flow [2024-06-28 01:31:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:31:03,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:31:03,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 01:31:03,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-28 01:31:03,972 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 577 flow. Second operand 5 states and 118 transitions. [2024-06-28 01:31:03,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 97 transitions, 793 flow [2024-06-28 01:31:03,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 703 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:03,983 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 527 flow [2024-06-28 01:31:03,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=527, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-06-28 01:31:03,984 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2024-06-28 01:31:03,984 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 527 flow [2024-06-28 01:31:03,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:03,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:03,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:03,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:31:03,985 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 01:31:03,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:03,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1684721572, now seen corresponding path program 1 times [2024-06-28 01:31:03,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:03,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148034740] [2024-06-28 01:31:03,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:03,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:04,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:04,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148034740] [2024-06-28 01:31:04,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148034740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:04,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:04,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:04,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16571414] [2024-06-28 01:31:04,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:04,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:04,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:04,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:04,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:04,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:04,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 527 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 01:31:04,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:04,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:04,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:05,467 INFO L124 PetriNetUnfolderBase]: 4569/7441 cut-off events. [2024-06-28 01:31:05,468 INFO L125 PetriNetUnfolderBase]: For 17057/17057 co-relation queries the response was YES. [2024-06-28 01:31:05,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22401 conditions, 7441 events. 4569/7441 cut-off events. For 17057/17057 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 46811 event pairs, 1838 based on Foata normal form. 6/7222 useless extension candidates. Maximal degree in co-relation 22370. Up to 6397 conditions per place. [2024-06-28 01:31:05,510 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 93 selfloop transitions, 21 changer transitions 0/122 dead transitions. [2024-06-28 01:31:05,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 925 flow [2024-06-28 01:31:05,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:05,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:05,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:31:05,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:31:05,512 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 527 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:31:05,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 925 flow [2024-06-28 01:31:05,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 886 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:05,529 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 637 flow [2024-06-28 01:31:05,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=637, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2024-06-28 01:31:05,531 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2024-06-28 01:31:05,532 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 637 flow [2024-06-28 01:31:05,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 01:31:05,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:05,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:05,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:31:05,532 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 01:31:05,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:05,533 INFO L85 PathProgramCache]: Analyzing trace with hash -693404881, now seen corresponding path program 1 times [2024-06-28 01:31:05,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:05,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460761039] [2024-06-28 01:31:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:05,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:06,153 INFO 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 01:31:06,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:06,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460761039] [2024-06-28 01:31:06,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460761039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:06,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:06,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:06,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483097188] [2024-06-28 01:31:06,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:06,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:06,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:06,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:06,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:06,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:06,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 637 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:06,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:06,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:06,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:06,930 INFO L124 PetriNetUnfolderBase]: 4131/6710 cut-off events. [2024-06-28 01:31:06,931 INFO L125 PetriNetUnfolderBase]: For 21005/21022 co-relation queries the response was YES. [2024-06-28 01:31:06,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22448 conditions, 6710 events. 4131/6710 cut-off events. For 21005/21022 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 41629 event pairs, 1476 based on Foata normal form. 10/6508 useless extension candidates. Maximal degree in co-relation 22415. Up to 5762 conditions per place. [2024-06-28 01:31:06,972 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 91 selfloop transitions, 21 changer transitions 0/124 dead transitions. [2024-06-28 01:31:06,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 124 transitions, 999 flow [2024-06-28 01:31:06,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 01:31:06,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-28 01:31:06,974 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 637 flow. Second operand 6 states and 149 transitions. [2024-06-28 01:31:06,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 124 transitions, 999 flow [2024-06-28 01:31:06,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 124 transitions, 981 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:31:06,993 INFO L231 Difference]: Finished difference. Result has 85 places, 94 transitions, 705 flow [2024-06-28 01:31:06,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=705, PETRI_PLACES=85, PETRI_TRANSITIONS=94} [2024-06-28 01:31:06,994 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2024-06-28 01:31:06,994 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 94 transitions, 705 flow [2024-06-28 01:31:06,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:06,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:06,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:06,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:31:06,995 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 01:31:06,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:06,995 INFO L85 PathProgramCache]: Analyzing trace with hash -285483631, now seen corresponding path program 2 times [2024-06-28 01:31:06,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:06,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033599679] [2024-06-28 01:31:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:06,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:07,523 INFO 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 01:31:07,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:07,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033599679] [2024-06-28 01:31:07,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033599679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:07,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:07,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:07,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207057210] [2024-06-28 01:31:07,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:07,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:07,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:07,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:07,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:07,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 94 transitions, 705 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:07,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:07,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:07,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:08,475 INFO L124 PetriNetUnfolderBase]: 4195/6919 cut-off events. [2024-06-28 01:31:08,475 INFO L125 PetriNetUnfolderBase]: For 21886/21894 co-relation queries the response was YES. [2024-06-28 01:31:08,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22789 conditions, 6919 events. 4195/6919 cut-off events. For 21886/21894 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 44184 event pairs, 1703 based on Foata normal form. 2/6703 useless extension candidates. Maximal degree in co-relation 22753. Up to 5954 conditions per place. [2024-06-28 01:31:08,516 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 92 selfloop transitions, 13 changer transitions 0/117 dead transitions. [2024-06-28 01:31:08,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 117 transitions, 973 flow [2024-06-28 01:31:08,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:08,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:31:08,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-28 01:31:08,518 INFO L175 Difference]: Start difference. First operand has 85 places, 94 transitions, 705 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:31:08,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 117 transitions, 973 flow [2024-06-28 01:31:08,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 117 transitions, 940 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:08,542 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 706 flow [2024-06-28 01:31:08,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=706, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2024-06-28 01:31:08,543 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-06-28 01:31:08,543 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 706 flow [2024-06-28 01:31:08,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:08,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:08,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:08,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:31:08,544 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 01:31:08,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1225033880, now seen corresponding path program 1 times [2024-06-28 01:31:08,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:08,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440623902] [2024-06-28 01:31:08,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:08,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:09,273 INFO 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 01:31:09,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:09,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440623902] [2024-06-28 01:31:09,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440623902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:09,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:09,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:09,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606006196] [2024-06-28 01:31:09,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:09,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:09,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:09,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:09,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:09,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:09,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 706 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:09,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:09,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:09,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:10,231 INFO L124 PetriNetUnfolderBase]: 4996/7895 cut-off events. [2024-06-28 01:31:10,231 INFO L125 PetriNetUnfolderBase]: For 28146/28155 co-relation queries the response was YES. [2024-06-28 01:31:10,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26696 conditions, 7895 events. 4996/7895 cut-off events. For 28146/28155 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 48302 event pairs, 1484 based on Foata normal form. 14/7675 useless extension candidates. Maximal degree in co-relation 26659. Up to 6382 conditions per place. [2024-06-28 01:31:10,314 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 123 selfloop transitions, 34 changer transitions 0/165 dead transitions. [2024-06-28 01:31:10,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 165 transitions, 1396 flow [2024-06-28 01:31:10,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:31:10,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5440729483282675 [2024-06-28 01:31:10,316 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 706 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:31:10,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 165 transitions, 1396 flow [2024-06-28 01:31:10,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 165 transitions, 1340 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:10,342 INFO L231 Difference]: Finished difference. Result has 92 places, 116 transitions, 937 flow [2024-06-28 01:31:10,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=937, PETRI_PLACES=92, PETRI_TRANSITIONS=116} [2024-06-28 01:31:10,342 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2024-06-28 01:31:10,343 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 116 transitions, 937 flow [2024-06-28 01:31:10,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:10,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:10,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:10,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:31:10,343 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 01:31:10,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:10,344 INFO L85 PathProgramCache]: Analyzing trace with hash -259790344, now seen corresponding path program 2 times [2024-06-28 01:31:10,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:10,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782039156] [2024-06-28 01:31:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:10,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:10,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:10,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:10,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782039156] [2024-06-28 01:31:10,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782039156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:10,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:10,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:10,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467862091] [2024-06-28 01:31:10,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:10,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:10,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:11,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:11,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 116 transitions, 937 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:11,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:11,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:11,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:12,019 INFO L124 PetriNetUnfolderBase]: 5080/8214 cut-off events. [2024-06-28 01:31:12,020 INFO L125 PetriNetUnfolderBase]: For 39963/39963 co-relation queries the response was YES. [2024-06-28 01:31:12,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31571 conditions, 8214 events. 5080/8214 cut-off events. For 39963/39963 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52037 event pairs, 1826 based on Foata normal form. 6/7977 useless extension candidates. Maximal degree in co-relation 31531. Up to 7117 conditions per place. [2024-06-28 01:31:12,062 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 124 selfloop transitions, 26 changer transitions 0/158 dead transitions. [2024-06-28 01:31:12,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 158 transitions, 1452 flow [2024-06-28 01:31:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:31:12,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-28 01:31:12,064 INFO L175 Difference]: Start difference. First operand has 92 places, 116 transitions, 937 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:31:12,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 158 transitions, 1452 flow [2024-06-28 01:31:12,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 158 transitions, 1414 flow, removed 18 selfloop flow, removed 1 redundant places. [2024-06-28 01:31:12,098 INFO L231 Difference]: Finished difference. Result has 101 places, 126 transitions, 1093 flow [2024-06-28 01:31:12,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1093, PETRI_PLACES=101, PETRI_TRANSITIONS=126} [2024-06-28 01:31:12,098 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-06-28 01:31:12,099 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 126 transitions, 1093 flow [2024-06-28 01:31:12,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:12,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:12,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:12,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:31:12,099 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 01:31:12,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:12,100 INFO L85 PathProgramCache]: Analyzing trace with hash 185017694, now seen corresponding path program 3 times [2024-06-28 01:31:12,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:12,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066645834] [2024-06-28 01:31:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:12,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:12,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:12,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066645834] [2024-06-28 01:31:12,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066645834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:12,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:12,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:12,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276833792] [2024-06-28 01:31:12,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:12,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:12,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:12,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:12,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:12,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:12,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 126 transitions, 1093 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:12,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:12,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:12,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:13,760 INFO L124 PetriNetUnfolderBase]: 5108/8244 cut-off events. [2024-06-28 01:31:13,760 INFO L125 PetriNetUnfolderBase]: For 44756/44756 co-relation queries the response was YES. [2024-06-28 01:31:13,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32500 conditions, 8244 events. 5108/8244 cut-off events. For 44756/44756 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 52153 event pairs, 1818 based on Foata normal form. 6/8009 useless extension candidates. Maximal degree in co-relation 32454. Up to 7017 conditions per place. [2024-06-28 01:31:13,818 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 130 selfloop transitions, 32 changer transitions 0/170 dead transitions. [2024-06-28 01:31:13,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 170 transitions, 1659 flow [2024-06-28 01:31:13,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:31:13,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-28 01:31:13,820 INFO L175 Difference]: Start difference. First operand has 101 places, 126 transitions, 1093 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:31:13,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 170 transitions, 1659 flow [2024-06-28 01:31:13,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 170 transitions, 1594 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:13,866 INFO L231 Difference]: Finished difference. Result has 106 places, 134 transitions, 1203 flow [2024-06-28 01:31:13,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1203, PETRI_PLACES=106, PETRI_TRANSITIONS=134} [2024-06-28 01:31:13,866 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2024-06-28 01:31:13,867 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 134 transitions, 1203 flow [2024-06-28 01:31:13,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:13,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:13,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:13,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:31:13,867 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 01:31:13,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash 185293563, now seen corresponding path program 1 times [2024-06-28 01:31:13,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:13,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839007759] [2024-06-28 01:31:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:13,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:14,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:14,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839007759] [2024-06-28 01:31:14,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839007759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:14,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:14,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:14,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130817118] [2024-06-28 01:31:14,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:14,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:14,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:14,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:14,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:14,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:14,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 134 transitions, 1203 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 01:31:14,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:14,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:14,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:15,859 INFO L124 PetriNetUnfolderBase]: 5131/8313 cut-off events. [2024-06-28 01:31:15,859 INFO L125 PetriNetUnfolderBase]: For 51890/51890 co-relation queries the response was YES. [2024-06-28 01:31:15,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33816 conditions, 8313 events. 5131/8313 cut-off events. For 51890/51890 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 52990 event pairs, 1757 based on Foata normal form. 6/8067 useless extension candidates. Maximal degree in co-relation 33768. Up to 7108 conditions per place. [2024-06-28 01:31:15,919 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 135 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2024-06-28 01:31:15,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 176 transitions, 1729 flow [2024-06-28 01:31:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:15,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:31:15,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-28 01:31:15,921 INFO L175 Difference]: Start difference. First operand has 106 places, 134 transitions, 1203 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:31:15,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 176 transitions, 1729 flow [2024-06-28 01:31:15,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 176 transitions, 1673 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:15,976 INFO L231 Difference]: Finished difference. Result has 110 places, 137 transitions, 1259 flow [2024-06-28 01:31:15,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1259, PETRI_PLACES=110, PETRI_TRANSITIONS=137} [2024-06-28 01:31:15,977 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 57 predicate places. [2024-06-28 01:31:15,977 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 137 transitions, 1259 flow [2024-06-28 01:31:15,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 01:31:15,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:15,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:15,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:31:15,978 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 01:31:15,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:15,978 INFO L85 PathProgramCache]: Analyzing trace with hash -945898253, now seen corresponding path program 1 times [2024-06-28 01:31:15,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:15,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604385023] [2024-06-28 01:31:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:15,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:16,408 INFO 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 01:31:16,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:16,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604385023] [2024-06-28 01:31:16,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604385023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:16,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:16,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:31:16,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88925964] [2024-06-28 01:31:16,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:16,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:31:16,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:16,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:31:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:31:16,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:16,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 137 transitions, 1259 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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 01:31:16,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:16,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:16,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:17,369 INFO L124 PetriNetUnfolderBase]: 5128/8294 cut-off events. [2024-06-28 01:31:17,369 INFO L125 PetriNetUnfolderBase]: For 55666/55666 co-relation queries the response was YES. [2024-06-28 01:31:17,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34593 conditions, 8294 events. 5128/8294 cut-off events. For 55666/55666 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 52700 event pairs, 1825 based on Foata normal form. 1/8048 useless extension candidates. Maximal degree in co-relation 34543. Up to 7288 conditions per place. [2024-06-28 01:31:17,430 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 129 selfloop transitions, 14 changer transitions 0/151 dead transitions. [2024-06-28 01:31:17,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 151 transitions, 1577 flow [2024-06-28 01:31:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:31:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:31:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-28 01:31:17,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-28 01:31:17,431 INFO L175 Difference]: Start difference. First operand has 110 places, 137 transitions, 1259 flow. Second operand 5 states and 110 transitions. [2024-06-28 01:31:17,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 151 transitions, 1577 flow [2024-06-28 01:31:17,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 151 transitions, 1475 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:17,484 INFO L231 Difference]: Finished difference. Result has 110 places, 137 transitions, 1195 flow [2024-06-28 01:31:17,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1195, PETRI_PLACES=110, PETRI_TRANSITIONS=137} [2024-06-28 01:31:17,485 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 57 predicate places. [2024-06-28 01:31:17,485 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 137 transitions, 1195 flow [2024-06-28 01:31:17,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 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 01:31:17,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:17,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:17,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:31:17,485 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 01:31:17,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:17,486 INFO L85 PathProgramCache]: Analyzing trace with hash -682468940, now seen corresponding path program 1 times [2024-06-28 01:31:17,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:17,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515554147] [2024-06-28 01:31:17,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:17,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:18,377 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 01:31:18,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:18,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515554147] [2024-06-28 01:31:18,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515554147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:18,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:18,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:18,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657269434] [2024-06-28 01:31:18,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:18,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:18,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:18,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:18,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:18,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:18,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 137 transitions, 1195 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:18,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:18,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:18,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:19,455 INFO L124 PetriNetUnfolderBase]: 4751/7657 cut-off events. [2024-06-28 01:31:19,455 INFO L125 PetriNetUnfolderBase]: For 55836/55895 co-relation queries the response was YES. [2024-06-28 01:31:19,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32396 conditions, 7657 events. 4751/7657 cut-off events. For 55836/55895 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 48094 event pairs, 1381 based on Foata normal form. 15/7421 useless extension candidates. Maximal degree in co-relation 32345. Up to 6434 conditions per place. [2024-06-28 01:31:19,510 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 141 selfloop transitions, 28 changer transitions 0/191 dead transitions. [2024-06-28 01:31:19,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 191 transitions, 1725 flow [2024-06-28 01:31:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:19,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:31:19,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:31:19,512 INFO L175 Difference]: Start difference. First operand has 110 places, 137 transitions, 1195 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:31:19,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 191 transitions, 1725 flow [2024-06-28 01:31:19,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 191 transitions, 1682 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:19,576 INFO L231 Difference]: Finished difference. Result has 115 places, 144 transitions, 1294 flow [2024-06-28 01:31:19,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1294, PETRI_PLACES=115, PETRI_TRANSITIONS=144} [2024-06-28 01:31:19,577 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2024-06-28 01:31:19,577 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 144 transitions, 1294 flow [2024-06-28 01:31:19,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:19,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:19,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:19,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:31:19,578 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 01:31:19,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:19,578 INFO L85 PathProgramCache]: Analyzing trace with hash -678659505, now seen corresponding path program 1 times [2024-06-28 01:31:19,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:19,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942460855] [2024-06-28 01:31:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:19,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:20,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:20,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942460855] [2024-06-28 01:31:20,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942460855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:20,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:20,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:20,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075778023] [2024-06-28 01:31:20,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:20,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:20,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:20,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:20,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:20,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 144 transitions, 1294 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:20,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:20,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:20,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:21,329 INFO L124 PetriNetUnfolderBase]: 5222/8264 cut-off events. [2024-06-28 01:31:21,329 INFO L125 PetriNetUnfolderBase]: For 65380/65392 co-relation queries the response was YES. [2024-06-28 01:31:21,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36200 conditions, 8264 events. 5222/8264 cut-off events. For 65380/65392 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 51093 event pairs, 1497 based on Foata normal form. 9/8025 useless extension candidates. Maximal degree in co-relation 36148. Up to 6539 conditions per place. [2024-06-28 01:31:21,395 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 139 selfloop transitions, 52 changer transitions 0/199 dead transitions. [2024-06-28 01:31:21,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 199 transitions, 2048 flow [2024-06-28 01:31:21,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 01:31:21,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5501519756838906 [2024-06-28 01:31:21,397 INFO L175 Difference]: Start difference. First operand has 115 places, 144 transitions, 1294 flow. Second operand 7 states and 181 transitions. [2024-06-28 01:31:21,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 199 transitions, 2048 flow [2024-06-28 01:31:21,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 199 transitions, 1972 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:21,467 INFO L231 Difference]: Finished difference. Result has 119 places, 152 transitions, 1490 flow [2024-06-28 01:31:21,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1490, PETRI_PLACES=119, PETRI_TRANSITIONS=152} [2024-06-28 01:31:21,468 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-06-28 01:31:21,468 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 152 transitions, 1490 flow [2024-06-28 01:31:21,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:21,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:21,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:21,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:31:21,469 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 01:31:21,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:21,469 INFO L85 PathProgramCache]: Analyzing trace with hash -678653925, now seen corresponding path program 2 times [2024-06-28 01:31:21,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:21,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513254570] [2024-06-28 01:31:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:21,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:22,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:22,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513254570] [2024-06-28 01:31:22,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513254570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:22,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:22,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:22,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359811591] [2024-06-28 01:31:22,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:22,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:22,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:22,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:22,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:22,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:22,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 152 transitions, 1490 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:22,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:22,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:22,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:23,162 INFO L124 PetriNetUnfolderBase]: 5306/8372 cut-off events. [2024-06-28 01:31:23,162 INFO L125 PetriNetUnfolderBase]: For 77640/77652 co-relation queries the response was YES. [2024-06-28 01:31:23,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39017 conditions, 8372 events. 5306/8372 cut-off events. For 77640/77652 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 51641 event pairs, 1484 based on Foata normal form. 9/8135 useless extension candidates. Maximal degree in co-relation 38962. Up to 6601 conditions per place. [2024-06-28 01:31:23,233 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 138 selfloop transitions, 53 changer transitions 0/199 dead transitions. [2024-06-28 01:31:23,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 199 transitions, 2168 flow [2024-06-28 01:31:23,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:23,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:31:23,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-28 01:31:23,235 INFO L175 Difference]: Start difference. First operand has 119 places, 152 transitions, 1490 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:31:23,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 199 transitions, 2168 flow [2024-06-28 01:31:23,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 2071 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:23,345 INFO L231 Difference]: Finished difference. Result has 123 places, 156 transitions, 1569 flow [2024-06-28 01:31:23,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1569, PETRI_PLACES=123, PETRI_TRANSITIONS=156} [2024-06-28 01:31:23,345 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-06-28 01:31:23,345 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 156 transitions, 1569 flow [2024-06-28 01:31:23,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:23,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:23,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:23,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:31:23,346 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 01:31:23,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash 536435387, now seen corresponding path program 3 times [2024-06-28 01:31:23,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:23,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398131166] [2024-06-28 01:31:23,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:23,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:23,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:23,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398131166] [2024-06-28 01:31:23,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398131166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:23,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:23,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713296522] [2024-06-28 01:31:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:23,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:23,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:23,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:23,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:24,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:24,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 156 transitions, 1569 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:24,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:24,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:24,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:25,052 INFO L124 PetriNetUnfolderBase]: 5334/8225 cut-off events. [2024-06-28 01:31:25,052 INFO L125 PetriNetUnfolderBase]: For 84230/84242 co-relation queries the response was YES. [2024-06-28 01:31:25,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39398 conditions, 8225 events. 5334/8225 cut-off events. For 84230/84242 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 49714 event pairs, 1816 based on Foata normal form. 14/8081 useless extension candidates. Maximal degree in co-relation 39342. Up to 7396 conditions per place. [2024-06-28 01:31:25,120 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 158 selfloop transitions, 28 changer transitions 0/194 dead transitions. [2024-06-28 01:31:25,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 194 transitions, 2128 flow [2024-06-28 01:31:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:31:25,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-06-28 01:31:25,122 INFO L175 Difference]: Start difference. First operand has 123 places, 156 transitions, 1569 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:31:25,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 194 transitions, 2128 flow [2024-06-28 01:31:25,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 194 transitions, 2025 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:25,221 INFO L231 Difference]: Finished difference. Result has 126 places, 160 transitions, 1598 flow [2024-06-28 01:31:25,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1598, PETRI_PLACES=126, PETRI_TRANSITIONS=160} [2024-06-28 01:31:25,222 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 73 predicate places. [2024-06-28 01:31:25,222 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 160 transitions, 1598 flow [2024-06-28 01:31:25,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:25,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:25,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:25,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:31:25,223 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 01:31:25,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash 536443044, now seen corresponding path program 1 times [2024-06-28 01:31:25,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:25,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903730989] [2024-06-28 01:31:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:25,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:25,971 INFO 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 01:31:25,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:25,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903730989] [2024-06-28 01:31:25,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903730989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:25,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:25,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:25,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439638635] [2024-06-28 01:31:25,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:25,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:25,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:26,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:26,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 160 transitions, 1598 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 01:31:26,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:26,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:26,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:27,188 INFO L124 PetriNetUnfolderBase]: 5353/8287 cut-off events. [2024-06-28 01:31:27,189 INFO L125 PetriNetUnfolderBase]: For 89414/89414 co-relation queries the response was YES. [2024-06-28 01:31:27,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39504 conditions, 8287 events. 5353/8287 cut-off events. For 89414/89414 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 50475 event pairs, 1782 based on Foata normal form. 3/8123 useless extension candidates. Maximal degree in co-relation 39447. Up to 7437 conditions per place. [2024-06-28 01:31:27,252 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 159 selfloop transitions, 37 changer transitions 0/204 dead transitions. [2024-06-28 01:31:27,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 204 transitions, 2236 flow [2024-06-28 01:31:27,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 01:31:27,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-06-28 01:31:27,255 INFO L175 Difference]: Start difference. First operand has 126 places, 160 transitions, 1598 flow. Second operand 7 states and 164 transitions. [2024-06-28 01:31:27,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 204 transitions, 2236 flow [2024-06-28 01:31:27,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 204 transitions, 2155 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:27,356 INFO L231 Difference]: Finished difference. Result has 130 places, 173 transitions, 1787 flow [2024-06-28 01:31:27,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1787, PETRI_PLACES=130, PETRI_TRANSITIONS=173} [2024-06-28 01:31:27,357 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-06-28 01:31:27,357 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 173 transitions, 1787 flow [2024-06-28 01:31:27,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 01:31:27,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:27,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:27,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:31:27,358 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 01:31:27,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:27,358 INFO L85 PathProgramCache]: Analyzing trace with hash 741926670, now seen corresponding path program 1 times [2024-06-28 01:31:27,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:27,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788409592] [2024-06-28 01:31:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:27,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:27,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:27,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788409592] [2024-06-28 01:31:27,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788409592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:27,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:27,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:27,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083875406] [2024-06-28 01:31:27,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:27,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:27,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:27,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:27,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:27,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 173 transitions, 1787 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:31:27,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:27,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:27,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:29,032 INFO L124 PetriNetUnfolderBase]: 5344/8140 cut-off events. [2024-06-28 01:31:29,033 INFO L125 PetriNetUnfolderBase]: For 98144/98144 co-relation queries the response was YES. [2024-06-28 01:31:29,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41088 conditions, 8140 events. 5344/8140 cut-off events. For 98144/98144 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 48094 event pairs, 1803 based on Foata normal form. 3/8009 useless extension candidates. Maximal degree in co-relation 41028. Up to 7553 conditions per place. [2024-06-28 01:31:29,098 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 172 selfloop transitions, 17 changer transitions 0/197 dead transitions. [2024-06-28 01:31:29,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 197 transitions, 2251 flow [2024-06-28 01:31:29,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:29,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:29,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 01:31:29,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2024-06-28 01:31:29,101 INFO L175 Difference]: Start difference. First operand has 130 places, 173 transitions, 1787 flow. Second operand 6 states and 131 transitions. [2024-06-28 01:31:29,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 197 transitions, 2251 flow [2024-06-28 01:31:29,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 197 transitions, 2165 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:29,215 INFO L231 Difference]: Finished difference. Result has 133 places, 176 transitions, 1778 flow [2024-06-28 01:31:29,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1778, PETRI_PLACES=133, PETRI_TRANSITIONS=176} [2024-06-28 01:31:29,216 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 80 predicate places. [2024-06-28 01:31:29,216 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 176 transitions, 1778 flow [2024-06-28 01:31:29,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:31:29,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:29,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:29,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:31:29,217 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 01:31:29,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:29,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1451185569, now seen corresponding path program 1 times [2024-06-28 01:31:29,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:29,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915582897] [2024-06-28 01:31:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:29,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:30,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:30,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915582897] [2024-06-28 01:31:30,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915582897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:30,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:30,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:30,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310131742] [2024-06-28 01:31:30,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:30,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:30,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:30,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:30,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:30,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:30,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 176 transitions, 1778 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:30,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:30,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:30,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:31,378 INFO L124 PetriNetUnfolderBase]: 4948/7497 cut-off events. [2024-06-28 01:31:31,379 INFO L125 PetriNetUnfolderBase]: For 101132/101206 co-relation queries the response was YES. [2024-06-28 01:31:31,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39599 conditions, 7497 events. 4948/7497 cut-off events. For 101132/101206 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 43582 event pairs, 868 based on Foata normal form. 21/7426 useless extension candidates. Maximal degree in co-relation 39538. Up to 6453 conditions per place. [2024-06-28 01:31:31,445 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 161 selfloop transitions, 46 changer transitions 0/236 dead transitions. [2024-06-28 01:31:31,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 236 transitions, 2592 flow [2024-06-28 01:31:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:31:31,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:31:31,447 INFO L175 Difference]: Start difference. First operand has 133 places, 176 transitions, 1778 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:31:31,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 236 transitions, 2592 flow [2024-06-28 01:31:31,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 236 transitions, 2539 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:31,568 INFO L231 Difference]: Finished difference. Result has 138 places, 183 transitions, 1990 flow [2024-06-28 01:31:31,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1990, PETRI_PLACES=138, PETRI_TRANSITIONS=183} [2024-06-28 01:31:31,568 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 85 predicate places. [2024-06-28 01:31:31,568 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 183 transitions, 1990 flow [2024-06-28 01:31:31,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:31,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:31,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:31,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:31:31,569 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 01:31:31,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:31,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1451246019, now seen corresponding path program 2 times [2024-06-28 01:31:31,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:31,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313486838] [2024-06-28 01:31:31,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:31,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:32,382 INFO 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 01:31:32,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:32,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313486838] [2024-06-28 01:31:32,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313486838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:32,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:32,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:32,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786397185] [2024-06-28 01:31:32,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:32,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:32,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:32,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:32,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:32,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:32,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 183 transitions, 1990 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:32,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:32,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:32,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:33,614 INFO L124 PetriNetUnfolderBase]: 5017/7587 cut-off events. [2024-06-28 01:31:33,614 INFO L125 PetriNetUnfolderBase]: For 111490/111564 co-relation queries the response was YES. [2024-06-28 01:31:33,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41327 conditions, 7587 events. 5017/7587 cut-off events. For 111490/111564 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 43960 event pairs, 1127 based on Foata normal form. 21/7518 useless extension candidates. Maximal degree in co-relation 41264. Up to 6671 conditions per place. [2024-06-28 01:31:33,679 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 163 selfloop transitions, 49 changer transitions 0/241 dead transitions. [2024-06-28 01:31:33,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 241 transitions, 2720 flow [2024-06-28 01:31:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:33,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:33,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:31:33,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:31:33,681 INFO L175 Difference]: Start difference. First operand has 138 places, 183 transitions, 1990 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:31:33,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 241 transitions, 2720 flow [2024-06-28 01:31:33,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 241 transitions, 2554 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:33,887 INFO L231 Difference]: Finished difference. Result has 143 places, 191 transitions, 2066 flow [2024-06-28 01:31:33,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2066, PETRI_PLACES=143, PETRI_TRANSITIONS=191} [2024-06-28 01:31:33,888 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 90 predicate places. [2024-06-28 01:31:33,888 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 191 transitions, 2066 flow [2024-06-28 01:31:33,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:33,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:33,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:33,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:31:33,889 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 01:31:33,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1564749853, now seen corresponding path program 1 times [2024-06-28 01:31:33,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:33,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505022393] [2024-06-28 01:31:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:33,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:34,612 INFO 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 01:31:34,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:34,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505022393] [2024-06-28 01:31:34,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505022393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:34,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:34,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:34,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604018267] [2024-06-28 01:31:34,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:34,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:34,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:34,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:34,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 191 transitions, 2066 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:34,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:34,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:34,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:35,993 INFO L124 PetriNetUnfolderBase]: 5658/8587 cut-off events. [2024-06-28 01:31:35,994 INFO L125 PetriNetUnfolderBase]: For 124200/124215 co-relation queries the response was YES. [2024-06-28 01:31:36,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45709 conditions, 8587 events. 5658/8587 cut-off events. For 124200/124215 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 50922 event pairs, 1323 based on Foata normal form. 10/8445 useless extension candidates. Maximal degree in co-relation 45644. Up to 6606 conditions per place. [2024-06-28 01:31:36,066 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 200 selfloop transitions, 72 changer transitions 0/280 dead transitions. [2024-06-28 01:31:36,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 280 transitions, 3310 flow [2024-06-28 01:31:36,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-28 01:31:36,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551063829787234 [2024-06-28 01:31:36,068 INFO L175 Difference]: Start difference. First operand has 143 places, 191 transitions, 2066 flow. Second operand 10 states and 259 transitions. [2024-06-28 01:31:36,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 280 transitions, 3310 flow [2024-06-28 01:31:36,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 280 transitions, 3184 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:36,241 INFO L231 Difference]: Finished difference. Result has 150 places, 203 transitions, 2280 flow [2024-06-28 01:31:36,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2280, PETRI_PLACES=150, PETRI_TRANSITIONS=203} [2024-06-28 01:31:36,242 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 97 predicate places. [2024-06-28 01:31:36,242 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 203 transitions, 2280 flow [2024-06-28 01:31:36,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:36,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:36,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:36,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:31:36,243 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 01:31:36,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:36,243 INFO L85 PathProgramCache]: Analyzing trace with hash 321097371, now seen corresponding path program 3 times [2024-06-28 01:31:36,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:36,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792262225] [2024-06-28 01:31:36,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:36,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:36,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:37,365 INFO 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 01:31:37,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:37,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792262225] [2024-06-28 01:31:37,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792262225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:37,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:37,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:37,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384348475] [2024-06-28 01:31:37,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:37,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:37,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:37,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:37,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:37,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 203 transitions, 2280 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:37,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:37,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:37,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:38,692 INFO L124 PetriNetUnfolderBase]: 5293/7948 cut-off events. [2024-06-28 01:31:38,693 INFO L125 PetriNetUnfolderBase]: For 133475/133549 co-relation queries the response was YES. [2024-06-28 01:31:38,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45672 conditions, 7948 events. 5293/7948 cut-off events. For 133475/133549 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 45962 event pairs, 1134 based on Foata normal form. 21/7876 useless extension candidates. Maximal degree in co-relation 45604. Up to 7045 conditions per place. [2024-06-28 01:31:38,762 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 178 selfloop transitions, 43 changer transitions 0/253 dead transitions. [2024-06-28 01:31:38,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 253 transitions, 2920 flow [2024-06-28 01:31:38,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:31:38,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-28 01:31:38,763 INFO L175 Difference]: Start difference. First operand has 150 places, 203 transitions, 2280 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:31:38,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 253 transitions, 2920 flow [2024-06-28 01:31:39,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 253 transitions, 2742 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:39,019 INFO L231 Difference]: Finished difference. Result has 155 places, 207 transitions, 2285 flow [2024-06-28 01:31:39,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2102, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2285, PETRI_PLACES=155, PETRI_TRANSITIONS=207} [2024-06-28 01:31:39,020 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 102 predicate places. [2024-06-28 01:31:39,020 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 207 transitions, 2285 flow [2024-06-28 01:31:39,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:39,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:39,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:39,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:31:39,021 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 01:31:39,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:39,021 INFO L85 PathProgramCache]: Analyzing trace with hash 436388665, now seen corresponding path program 2 times [2024-06-28 01:31:39,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:39,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751610124] [2024-06-28 01:31:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:39,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:39,945 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 01:31:39,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:39,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751610124] [2024-06-28 01:31:39,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751610124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:39,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:39,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:39,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989691583] [2024-06-28 01:31:39,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:39,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:39,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:39,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:39,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:40,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:40,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 207 transitions, 2285 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:40,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:40,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:40,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:41,482 INFO L124 PetriNetUnfolderBase]: 5809/8572 cut-off events. [2024-06-28 01:31:41,482 INFO L125 PetriNetUnfolderBase]: For 145350/145365 co-relation queries the response was YES. [2024-06-28 01:31:41,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49218 conditions, 8572 events. 5809/8572 cut-off events. For 145350/145365 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 48747 event pairs, 1090 based on Foata normal form. 10/8503 useless extension candidates. Maximal degree in co-relation 49146. Up to 6610 conditions per place. [2024-06-28 01:31:41,559 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 185 selfloop transitions, 109 changer transitions 0/302 dead transitions. [2024-06-28 01:31:41,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 302 transitions, 3842 flow [2024-06-28 01:31:41,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 01:31:41,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2024-06-28 01:31:41,560 INFO L175 Difference]: Start difference. First operand has 155 places, 207 transitions, 2285 flow. Second operand 9 states and 239 transitions. [2024-06-28 01:31:41,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 302 transitions, 3842 flow [2024-06-28 01:31:41,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 302 transitions, 3736 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:41,811 INFO L231 Difference]: Finished difference. Result has 162 places, 227 transitions, 2802 flow [2024-06-28 01:31:41,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2802, PETRI_PLACES=162, PETRI_TRANSITIONS=227} [2024-06-28 01:31:41,812 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 109 predicate places. [2024-06-28 01:31:41,812 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 227 transitions, 2802 flow [2024-06-28 01:31:41,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:41,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:41,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:41,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:31:41,812 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:41,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:41,813 INFO L85 PathProgramCache]: Analyzing trace with hash 436393315, now seen corresponding path program 3 times [2024-06-28 01:31:41,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:41,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008774782] [2024-06-28 01:31:41,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:41,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:42,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:42,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:42,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008774782] [2024-06-28 01:31:42,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008774782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:42,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:42,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:42,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117186093] [2024-06-28 01:31:42,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:42,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:42,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:42,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:42,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:42,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:42,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 227 transitions, 2802 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:42,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:42,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:42,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:44,132 INFO L124 PetriNetUnfolderBase]: 5893/8924 cut-off events. [2024-06-28 01:31:44,133 INFO L125 PetriNetUnfolderBase]: For 175039/175054 co-relation queries the response was YES. [2024-06-28 01:31:44,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54750 conditions, 8924 events. 5893/8924 cut-off events. For 175039/175054 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 53392 event pairs, 1341 based on Foata normal form. 10/8778 useless extension candidates. Maximal degree in co-relation 54674. Up to 7335 conditions per place. [2024-06-28 01:31:44,216 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 215 selfloop transitions, 62 changer transitions 0/285 dead transitions. [2024-06-28 01:31:44,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 285 transitions, 3750 flow [2024-06-28 01:31:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:44,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:31:44,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-28 01:31:44,217 INFO L175 Difference]: Start difference. First operand has 162 places, 227 transitions, 2802 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:31:44,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 285 transitions, 3750 flow [2024-06-28 01:31:44,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 285 transitions, 3620 flow, removed 56 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:44,563 INFO L231 Difference]: Finished difference. Result has 168 places, 231 transitions, 2885 flow [2024-06-28 01:31:44,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2672, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2885, PETRI_PLACES=168, PETRI_TRANSITIONS=231} [2024-06-28 01:31:44,564 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 115 predicate places. [2024-06-28 01:31:44,564 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 231 transitions, 2885 flow [2024-06-28 01:31:44,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:44,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:44,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:44,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:31:44,565 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 01:31:44,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash 436566295, now seen corresponding path program 4 times [2024-06-28 01:31:44,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:44,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156016285] [2024-06-28 01:31:44,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:44,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:45,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:45,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:45,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156016285] [2024-06-28 01:31:45,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156016285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:45,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:45,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:45,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025712764] [2024-06-28 01:31:45,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:45,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:45,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:45,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:45,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:45,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:45,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 231 transitions, 2885 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:45,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:45,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:45,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:46,936 INFO L124 PetriNetUnfolderBase]: 5977/9034 cut-off events. [2024-06-28 01:31:46,936 INFO L125 PetriNetUnfolderBase]: For 181593/181608 co-relation queries the response was YES. [2024-06-28 01:31:46,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55414 conditions, 9034 events. 5977/9034 cut-off events. For 181593/181608 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 53972 event pairs, 1343 based on Foata normal form. 10/8890 useless extension candidates. Maximal degree in co-relation 55336. Up to 7451 conditions per place. [2024-06-28 01:31:47,021 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 217 selfloop transitions, 60 changer transitions 0/285 dead transitions. [2024-06-28 01:31:47,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 285 transitions, 3785 flow [2024-06-28 01:31:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:31:47,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:31:47,023 INFO L175 Difference]: Start difference. First operand has 168 places, 231 transitions, 2885 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:31:47,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 285 transitions, 3785 flow [2024-06-28 01:31:47,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 285 transitions, 3620 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:47,363 INFO L231 Difference]: Finished difference. Result has 170 places, 235 transitions, 2937 flow [2024-06-28 01:31:47,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2720, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2937, PETRI_PLACES=170, PETRI_TRANSITIONS=235} [2024-06-28 01:31:47,364 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 117 predicate places. [2024-06-28 01:31:47,364 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 235 transitions, 2937 flow [2024-06-28 01:31:47,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:47,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:47,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:47,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:31:47,364 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 01:31:47,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash 436573239, now seen corresponding path program 1 times [2024-06-28 01:31:47,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:47,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215438862] [2024-06-28 01:31:47,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:47,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:47,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:48,349 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 01:31:48,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:48,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215438862] [2024-06-28 01:31:48,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215438862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:48,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:48,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:48,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550484961] [2024-06-28 01:31:48,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:48,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:48,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:48,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:48,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:48,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:48,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 235 transitions, 2937 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:48,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:48,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:48,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:50,113 INFO L124 PetriNetUnfolderBase]: 6786/10347 cut-off events. [2024-06-28 01:31:50,114 INFO L125 PetriNetUnfolderBase]: For 216567/216582 co-relation queries the response was YES. [2024-06-28 01:31:50,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64525 conditions, 10347 events. 6786/10347 cut-off events. For 216567/216582 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 63588 event pairs, 2746 based on Foata normal form. 16/10197 useless extension candidates. Maximal degree in co-relation 64446. Up to 8542 conditions per place. [2024-06-28 01:31:50,212 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 258 selfloop transitions, 60 changer transitions 0/326 dead transitions. [2024-06-28 01:31:50,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 326 transitions, 4619 flow [2024-06-28 01:31:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:50,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:31:50,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-28 01:31:50,214 INFO L175 Difference]: Start difference. First operand has 170 places, 235 transitions, 2937 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:31:50,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 326 transitions, 4619 flow [2024-06-28 01:31:50,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 326 transitions, 4397 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:50,655 INFO L231 Difference]: Finished difference. Result has 177 places, 269 transitions, 3576 flow [2024-06-28 01:31:50,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2768, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3576, PETRI_PLACES=177, PETRI_TRANSITIONS=269} [2024-06-28 01:31:50,656 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 124 predicate places. [2024-06-28 01:31:50,656 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 269 transitions, 3576 flow [2024-06-28 01:31:50,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:50,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:50,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:50,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:31:50,657 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 01:31:50,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:50,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1437456553, now seen corresponding path program 2 times [2024-06-28 01:31:50,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:50,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767070119] [2024-06-28 01:31:50,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:50,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:51,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:51,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767070119] [2024-06-28 01:31:51,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767070119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:51,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:51,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:51,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286996213] [2024-06-28 01:31:51,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:51,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:51,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:51,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:51,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:51,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:51,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 269 transitions, 3576 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:51,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:51,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:51,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:53,512 INFO L124 PetriNetUnfolderBase]: 8250/12645 cut-off events. [2024-06-28 01:31:53,512 INFO L125 PetriNetUnfolderBase]: For 272952/272979 co-relation queries the response was YES. [2024-06-28 01:31:53,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83203 conditions, 12645 events. 8250/12645 cut-off events. For 272952/272979 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 80602 event pairs, 1469 based on Foata normal form. 28/12420 useless extension candidates. Maximal degree in co-relation 83119. Up to 9168 conditions per place. [2024-06-28 01:31:53,642 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 326 selfloop transitions, 130 changer transitions 0/464 dead transitions. [2024-06-28 01:31:53,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 464 transitions, 7301 flow [2024-06-28 01:31:53,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:53,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 01:31:53,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-28 01:31:53,644 INFO L175 Difference]: Start difference. First operand has 177 places, 269 transitions, 3576 flow. Second operand 9 states and 230 transitions. [2024-06-28 01:31:53,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 464 transitions, 7301 flow [2024-06-28 01:31:54,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 464 transitions, 7063 flow, removed 66 selfloop flow, removed 2 redundant places. [2024-06-28 01:31:54,347 INFO L231 Difference]: Finished difference. Result has 188 places, 353 transitions, 5397 flow [2024-06-28 01:31:54,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3466, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5397, PETRI_PLACES=188, PETRI_TRANSITIONS=353} [2024-06-28 01:31:54,348 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 135 predicate places. [2024-06-28 01:31:54,348 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 353 transitions, 5397 flow [2024-06-28 01:31:54,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:54,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:54,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:54,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:31:54,349 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:54,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:54,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1151570561, now seen corresponding path program 1 times [2024-06-28 01:31:54,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:54,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333631736] [2024-06-28 01:31:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:54,764 INFO 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 01:31:54,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:54,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333631736] [2024-06-28 01:31:54,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333631736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:54,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:54,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:54,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262587211] [2024-06-28 01:31:54,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:54,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:54,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:54,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:54,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:54,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:54,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 353 transitions, 5397 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:31:54,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:54,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:54,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:56,773 INFO L124 PetriNetUnfolderBase]: 8255/12899 cut-off events. [2024-06-28 01:31:56,773 INFO L125 PetriNetUnfolderBase]: For 290467/290467 co-relation queries the response was YES. [2024-06-28 01:31:56,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87037 conditions, 12899 events. 8255/12899 cut-off events. For 290467/290467 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 84873 event pairs, 2970 based on Foata normal form. 2/12607 useless extension candidates. Maximal degree in co-relation 86947. Up to 11554 conditions per place. [2024-06-28 01:31:56,922 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 358 selfloop transitions, 31 changer transitions 0/397 dead transitions. [2024-06-28 01:31:56,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 397 transitions, 6595 flow [2024-06-28 01:31:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:56,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:31:56,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-28 01:31:56,924 INFO L175 Difference]: Start difference. First operand has 188 places, 353 transitions, 5397 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:31:56,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 397 transitions, 6595 flow [2024-06-28 01:31:57,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 397 transitions, 6413 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:57,772 INFO L231 Difference]: Finished difference. Result has 193 places, 367 transitions, 5571 flow [2024-06-28 01:31:57,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5228, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5571, PETRI_PLACES=193, PETRI_TRANSITIONS=367} [2024-06-28 01:31:57,773 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 140 predicate places. [2024-06-28 01:31:57,773 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 367 transitions, 5571 flow [2024-06-28 01:31:57,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:31:57,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:57,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:57,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:31:57,774 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:57,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:57,774 INFO L85 PathProgramCache]: Analyzing trace with hash -32732657, now seen corresponding path program 2 times [2024-06-28 01:31:57,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:57,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595361766] [2024-06-28 01:31:57,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:58,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:58,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:58,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595361766] [2024-06-28 01:31:58,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595361766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:58,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:58,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:58,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802947242] [2024-06-28 01:31:58,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:58,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:58,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:58,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:58,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:31:58,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 367 transitions, 5571 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:31:58,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:58,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:31:58,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:00,205 INFO L124 PetriNetUnfolderBase]: 8283/12882 cut-off events. [2024-06-28 01:32:00,205 INFO L125 PetriNetUnfolderBase]: For 287439/287439 co-relation queries the response was YES. [2024-06-28 01:32:00,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86753 conditions, 12882 events. 8283/12882 cut-off events. For 287439/287439 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 84218 event pairs, 2811 based on Foata normal form. 1/12588 useless extension candidates. Maximal degree in co-relation 86659. Up to 11578 conditions per place. [2024-06-28 01:32:00,360 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 352 selfloop transitions, 42 changer transitions 0/402 dead transitions. [2024-06-28 01:32:00,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 402 transitions, 6756 flow [2024-06-28 01:32:00,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:00,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:32:00,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2024-06-28 01:32:00,361 INFO L175 Difference]: Start difference. First operand has 193 places, 367 transitions, 5571 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:32:00,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 402 transitions, 6756 flow [2024-06-28 01:32:01,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 402 transitions, 6510 flow, removed 63 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:01,167 INFO L231 Difference]: Finished difference. Result has 196 places, 376 transitions, 5656 flow [2024-06-28 01:32:01,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5369, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5656, PETRI_PLACES=196, PETRI_TRANSITIONS=376} [2024-06-28 01:32:01,167 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 143 predicate places. [2024-06-28 01:32:01,167 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 376 transitions, 5656 flow [2024-06-28 01:32:01,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:32:01,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:01,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:01,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:32:01,168 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 01:32:01,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:01,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1973498681, now seen corresponding path program 3 times [2024-06-28 01:32:01,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:01,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211935764] [2024-06-28 01:32:01,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:01,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:01,982 INFO 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 01:32:01,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:01,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211935764] [2024-06-28 01:32:01,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211935764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:01,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:01,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:01,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411939568] [2024-06-28 01:32:01,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:01,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:01,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:01,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:02,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:02,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 376 transitions, 5656 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:02,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:02,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:02,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:04,550 INFO L124 PetriNetUnfolderBase]: 8351/12933 cut-off events. [2024-06-28 01:32:04,550 INFO L125 PetriNetUnfolderBase]: For 295499/295499 co-relation queries the response was YES. [2024-06-28 01:32:04,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87498 conditions, 12933 events. 8351/12933 cut-off events. For 295499/295499 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 84098 event pairs, 3169 based on Foata normal form. 6/12677 useless extension candidates. Maximal degree in co-relation 87402. Up to 11567 conditions per place. [2024-06-28 01:32:04,677 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 375 selfloop transitions, 37 changer transitions 0/420 dead transitions. [2024-06-28 01:32:04,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 420 transitions, 6768 flow [2024-06-28 01:32:04,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:04,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:32:04,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-28 01:32:04,679 INFO L175 Difference]: Start difference. First operand has 196 places, 376 transitions, 5656 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:32:04,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 420 transitions, 6768 flow [2024-06-28 01:32:05,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 420 transitions, 6549 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:05,393 INFO L231 Difference]: Finished difference. Result has 200 places, 383 transitions, 5648 flow [2024-06-28 01:32:05,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5439, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5648, PETRI_PLACES=200, PETRI_TRANSITIONS=383} [2024-06-28 01:32:05,394 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 147 predicate places. [2024-06-28 01:32:05,394 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 383 transitions, 5648 flow [2024-06-28 01:32:05,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:05,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:05,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:05,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:32:05,395 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:05,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1964235633, now seen corresponding path program 1 times [2024-06-28 01:32:05,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:05,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015613781] [2024-06-28 01:32:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:05,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:06,266 INFO 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 01:32:06,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:06,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015613781] [2024-06-28 01:32:06,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015613781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:06,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:06,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745355365] [2024-06-28 01:32:06,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:06,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:06,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:06,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:06,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 383 transitions, 5648 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:06,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:06,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:06,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:08,685 INFO L124 PetriNetUnfolderBase]: 8370/12975 cut-off events. [2024-06-28 01:32:08,685 INFO L125 PetriNetUnfolderBase]: For 295456/295471 co-relation queries the response was YES. [2024-06-28 01:32:08,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88565 conditions, 12975 events. 8370/12975 cut-off events. For 295456/295471 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 84716 event pairs, 3146 based on Foata normal form. 13/12720 useless extension candidates. Maximal degree in co-relation 88468. Up to 11439 conditions per place. [2024-06-28 01:32:08,840 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 364 selfloop transitions, 54 changer transitions 0/426 dead transitions. [2024-06-28 01:32:08,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 426 transitions, 6800 flow [2024-06-28 01:32:08,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:32:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:32:08,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:32:08,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-28 01:32:08,842 INFO L175 Difference]: Start difference. First operand has 200 places, 383 transitions, 5648 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:32:08,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 426 transitions, 6800 flow [2024-06-28 01:32:09,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 426 transitions, 6649 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:09,709 INFO L231 Difference]: Finished difference. Result has 202 places, 387 transitions, 5713 flow [2024-06-28 01:32:09,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5497, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5713, PETRI_PLACES=202, PETRI_TRANSITIONS=387} [2024-06-28 01:32:09,710 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 149 predicate places. [2024-06-28 01:32:09,710 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 387 transitions, 5713 flow [2024-06-28 01:32:09,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:09,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:09,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:09,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:32:09,711 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:09,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:09,711 INFO L85 PathProgramCache]: Analyzing trace with hash -550133113, now seen corresponding path program 4 times [2024-06-28 01:32:09,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:09,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25921402] [2024-06-28 01:32:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:09,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:10,605 INFO 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 01:32:10,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:10,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25921402] [2024-06-28 01:32:10,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25921402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:10,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:10,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:10,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112106041] [2024-06-28 01:32:10,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:10,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:10,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:10,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:10,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:10,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:10,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 387 transitions, 5713 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:10,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:10,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:10,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:13,113 INFO L124 PetriNetUnfolderBase]: 8438/13089 cut-off events. [2024-06-28 01:32:13,113 INFO L125 PetriNetUnfolderBase]: For 309477/309477 co-relation queries the response was YES. [2024-06-28 01:32:13,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89744 conditions, 13089 events. 8438/13089 cut-off events. For 309477/309477 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 85512 event pairs, 3163 based on Foata normal form. 6/12827 useless extension candidates. Maximal degree in co-relation 89646. Up to 11608 conditions per place. [2024-06-28 01:32:13,307 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 379 selfloop transitions, 45 changer transitions 0/432 dead transitions. [2024-06-28 01:32:13,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 432 transitions, 6878 flow [2024-06-28 01:32:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:32:13,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-28 01:32:13,309 INFO L175 Difference]: Start difference. First operand has 202 places, 387 transitions, 5713 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:32:13,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 432 transitions, 6878 flow [2024-06-28 01:32:14,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 432 transitions, 6734 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:14,366 INFO L231 Difference]: Finished difference. Result has 205 places, 390 transitions, 5764 flow [2024-06-28 01:32:14,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5569, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5764, PETRI_PLACES=205, PETRI_TRANSITIONS=390} [2024-06-28 01:32:14,367 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 152 predicate places. [2024-06-28 01:32:14,367 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 390 transitions, 5764 flow [2024-06-28 01:32:14,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:14,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:14,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:14,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:32:14,368 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:14,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:14,368 INFO L85 PathProgramCache]: Analyzing trace with hash 608461539, now seen corresponding path program 5 times [2024-06-28 01:32:14,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:14,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500745805] [2024-06-28 01:32:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:14,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:15,091 INFO 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 01:32:15,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:15,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500745805] [2024-06-28 01:32:15,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500745805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:15,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:15,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:15,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750541967] [2024-06-28 01:32:15,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:15,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:15,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:15,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:15,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:15,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:15,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 390 transitions, 5764 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:15,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:15,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:15,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:17,551 INFO L124 PetriNetUnfolderBase]: 8466/13128 cut-off events. [2024-06-28 01:32:17,551 INFO L125 PetriNetUnfolderBase]: For 321518/321533 co-relation queries the response was YES. [2024-06-28 01:32:17,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90567 conditions, 13128 events. 8466/13128 cut-off events. For 321518/321533 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 85715 event pairs, 3177 based on Foata normal form. 16/12872 useless extension candidates. Maximal degree in co-relation 90468. Up to 11569 conditions per place. [2024-06-28 01:32:17,672 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 389 selfloop transitions, 43 changer transitions 0/440 dead transitions. [2024-06-28 01:32:17,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 440 transitions, 6998 flow [2024-06-28 01:32:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:17,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:32:17,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-28 01:32:17,674 INFO L175 Difference]: Start difference. First operand has 205 places, 390 transitions, 5764 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:32:17,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 440 transitions, 6998 flow [2024-06-28 01:32:18,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 440 transitions, 6833 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:18,580 INFO L231 Difference]: Finished difference. Result has 207 places, 394 transitions, 5802 flow [2024-06-28 01:32:18,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5599, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5802, PETRI_PLACES=207, PETRI_TRANSITIONS=394} [2024-06-28 01:32:18,581 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 154 predicate places. [2024-06-28 01:32:18,581 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 394 transitions, 5802 flow [2024-06-28 01:32:18,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:18,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:18,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:18,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:32:18,582 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:18,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:18,582 INFO L85 PathProgramCache]: Analyzing trace with hash -310180297, now seen corresponding path program 5 times [2024-06-28 01:32:18,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:18,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965229685] [2024-06-28 01:32:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:18,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:19,552 INFO 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 01:32:19,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:19,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965229685] [2024-06-28 01:32:19,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965229685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:19,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:19,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:19,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852857877] [2024-06-28 01:32:19,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:19,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:19,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:19,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:19,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:19,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:19,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 394 transitions, 5802 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:19,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:19,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:19,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:22,345 INFO L124 PetriNetUnfolderBase]: 8497/13167 cut-off events. [2024-06-28 01:32:22,345 INFO L125 PetriNetUnfolderBase]: For 331029/331029 co-relation queries the response was YES. [2024-06-28 01:32:22,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90799 conditions, 13167 events. 8497/13167 cut-off events. For 331029/331029 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 85933 event pairs, 3154 based on Foata normal form. 6/12906 useless extension candidates. Maximal degree in co-relation 90699. Up to 11514 conditions per place. [2024-06-28 01:32:22,555 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 388 selfloop transitions, 48 changer transitions 0/444 dead transitions. [2024-06-28 01:32:22,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 444 transitions, 7112 flow [2024-06-28 01:32:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:32:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:32:22,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:32:22,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-28 01:32:22,564 INFO L175 Difference]: Start difference. First operand has 207 places, 394 transitions, 5802 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:32:22,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 444 transitions, 7112 flow [2024-06-28 01:32:23,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 444 transitions, 6968 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:23,459 INFO L231 Difference]: Finished difference. Result has 210 places, 397 transitions, 5866 flow [2024-06-28 01:32:23,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5658, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5866, PETRI_PLACES=210, PETRI_TRANSITIONS=397} [2024-06-28 01:32:23,459 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 157 predicate places. [2024-06-28 01:32:23,460 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 397 transitions, 5866 flow [2024-06-28 01:32:23,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:23,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:23,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:23,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:32:23,460 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:23,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:23,461 INFO L85 PathProgramCache]: Analyzing trace with hash -98500825, now seen corresponding path program 3 times [2024-06-28 01:32:23,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:23,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038607300] [2024-06-28 01:32:23,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:23,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:24,000 INFO 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 01:32:24,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:24,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038607300] [2024-06-28 01:32:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038607300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:24,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:24,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354930150] [2024-06-28 01:32:24,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:24,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:24,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:24,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:24,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:24,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 397 transitions, 5866 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:32:24,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:24,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:24,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:26,611 INFO L124 PetriNetUnfolderBase]: 8494/13183 cut-off events. [2024-06-28 01:32:26,612 INFO L125 PetriNetUnfolderBase]: For 337884/337884 co-relation queries the response was YES. [2024-06-28 01:32:26,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91197 conditions, 13183 events. 8494/13183 cut-off events. For 337884/337884 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 86132 event pairs, 3237 based on Foata normal form. 1/12911 useless extension candidates. Maximal degree in co-relation 91096. Up to 11956 conditions per place. [2024-06-28 01:32:26,768 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 386 selfloop transitions, 20 changer transitions 0/414 dead transitions. [2024-06-28 01:32:26,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 414 transitions, 6750 flow [2024-06-28 01:32:26,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-28 01:32:26,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450354609929078 [2024-06-28 01:32:26,773 INFO L175 Difference]: Start difference. First operand has 210 places, 397 transitions, 5866 flow. Second operand 6 states and 127 transitions. [2024-06-28 01:32:26,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 414 transitions, 6750 flow [2024-06-28 01:32:27,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 414 transitions, 6542 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-28 01:32:27,572 INFO L231 Difference]: Finished difference. Result has 210 places, 397 transitions, 5710 flow [2024-06-28 01:32:27,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5658, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5710, PETRI_PLACES=210, PETRI_TRANSITIONS=397} [2024-06-28 01:32:27,572 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 157 predicate places. [2024-06-28 01:32:27,572 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 397 transitions, 5710 flow [2024-06-28 01:32:27,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:32:27,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:27,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:27,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:32:27,573 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:27,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:27,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2135118556, now seen corresponding path program 1 times [2024-06-28 01:32:27,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:27,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021142623] [2024-06-28 01:32:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:27,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:28,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:28,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:28,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021142623] [2024-06-28 01:32:28,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021142623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:28,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:28,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:28,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945420115] [2024-06-28 01:32:28,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:28,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:28,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:28,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:28,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:28,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:28,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 397 transitions, 5710 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:32:28,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:28,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:28,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:30,875 INFO L124 PetriNetUnfolderBase]: 8505/13218 cut-off events. [2024-06-28 01:32:30,875 INFO L125 PetriNetUnfolderBase]: For 336641/336641 co-relation queries the response was YES. [2024-06-28 01:32:30,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90329 conditions, 13218 events. 8505/13218 cut-off events. For 336641/336641 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 86628 event pairs, 3216 based on Foata normal form. 3/12942 useless extension candidates. Maximal degree in co-relation 90227. Up to 11845 conditions per place. [2024-06-28 01:32:31,023 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 377 selfloop transitions, 42 changer transitions 0/427 dead transitions. [2024-06-28 01:32:31,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 427 transitions, 6805 flow [2024-06-28 01:32:31,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:32:31,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-28 01:32:31,024 INFO L175 Difference]: Start difference. First operand has 210 places, 397 transitions, 5710 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:32:31,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 427 transitions, 6805 flow [2024-06-28 01:32:31,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 427 transitions, 6726 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:31,849 INFO L231 Difference]: Finished difference. Result has 211 places, 403 transitions, 5840 flow [2024-06-28 01:32:31,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5631, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5840, PETRI_PLACES=211, PETRI_TRANSITIONS=403} [2024-06-28 01:32:31,850 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 158 predicate places. [2024-06-28 01:32:31,850 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 403 transitions, 5840 flow [2024-06-28 01:32:31,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:32:31,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:31,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:31,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:32:31,851 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:31,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:31,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1526267666, now seen corresponding path program 2 times [2024-06-28 01:32:31,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:31,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153127268] [2024-06-28 01:32:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:31,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:32,391 INFO 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 01:32:32,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:32,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153127268] [2024-06-28 01:32:32,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153127268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:32,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:32,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:32,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030136257] [2024-06-28 01:32:32,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:32,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:32,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:32,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:32,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:32,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:32,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 403 transitions, 5840 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:32:32,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:32,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:32,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:35,019 INFO L124 PetriNetUnfolderBase]: 8473/13168 cut-off events. [2024-06-28 01:32:35,019 INFO L125 PetriNetUnfolderBase]: For 344387/344402 co-relation queries the response was YES. [2024-06-28 01:32:35,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90315 conditions, 13168 events. 8473/13168 cut-off events. For 344387/344402 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 86259 event pairs, 3235 based on Foata normal form. 5/12895 useless extension candidates. Maximal degree in co-relation 90213. Up to 11799 conditions per place. [2024-06-28 01:32:35,165 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 371 selfloop transitions, 44 changer transitions 0/423 dead transitions. [2024-06-28 01:32:35,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 423 transitions, 6739 flow [2024-06-28 01:32:35,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:32:35,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-28 01:32:35,169 INFO L175 Difference]: Start difference. First operand has 211 places, 403 transitions, 5840 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:32:35,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 423 transitions, 6739 flow [2024-06-28 01:32:36,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 423 transitions, 6665 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:36,121 INFO L231 Difference]: Finished difference. Result has 214 places, 403 transitions, 5864 flow [2024-06-28 01:32:36,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5766, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5864, PETRI_PLACES=214, PETRI_TRANSITIONS=403} [2024-06-28 01:32:36,122 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 161 predicate places. [2024-06-28 01:32:36,122 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 403 transitions, 5864 flow [2024-06-28 01:32:36,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states 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 01:32:36,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:36,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:36,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:32:36,123 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 01:32:36,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1934405516, now seen corresponding path program 1 times [2024-06-28 01:32:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563974648] [2024-06-28 01:32:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:36,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:36,787 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 01:32:36,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:36,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563974648] [2024-06-28 01:32:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563974648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:36,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:36,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:36,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680351843] [2024-06-28 01:32:36,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:36,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:36,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:36,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:36,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:36,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 403 transitions, 5864 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 01:32:36,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:36,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:36,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:40,027 INFO L124 PetriNetUnfolderBase]: 10229/15958 cut-off events. [2024-06-28 01:32:40,027 INFO L125 PetriNetUnfolderBase]: For 483396/483419 co-relation queries the response was YES. [2024-06-28 01:32:40,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110530 conditions, 15958 events. 10229/15958 cut-off events. For 483396/483419 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 108987 event pairs, 1767 based on Foata normal form. 36/15689 useless extension candidates. Maximal degree in co-relation 110427. Up to 6282 conditions per place. [2024-06-28 01:32:40,418 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 352 selfloop transitions, 173 changer transitions 0/533 dead transitions. [2024-06-28 01:32:40,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 533 transitions, 8436 flow [2024-06-28 01:32:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-28 01:32:40,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5791962174940898 [2024-06-28 01:32:40,420 INFO L175 Difference]: Start difference. First operand has 214 places, 403 transitions, 5864 flow. Second operand 9 states and 245 transitions. [2024-06-28 01:32:40,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 533 transitions, 8436 flow [2024-06-28 01:32:41,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 533 transitions, 8280 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:41,535 INFO L231 Difference]: Finished difference. Result has 220 places, 423 transitions, 6598 flow [2024-06-28 01:32:41,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5708, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6598, PETRI_PLACES=220, PETRI_TRANSITIONS=423} [2024-06-28 01:32:41,536 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 167 predicate places. [2024-06-28 01:32:41,536 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 423 transitions, 6598 flow [2024-06-28 01:32:41,536 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 01:32:41,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:41,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:41,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:32:41,537 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:41,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:41,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1623482754, now seen corresponding path program 2 times [2024-06-28 01:32:41,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:41,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473705889] [2024-06-28 01:32:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:41,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:42,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:42,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473705889] [2024-06-28 01:32:42,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473705889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:42,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:42,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:42,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960396342] [2024-06-28 01:32:42,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:42,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:42,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:42,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:42,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:42,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:42,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 423 transitions, 6598 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 01:32:42,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:42,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:42,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:46,682 INFO L124 PetriNetUnfolderBase]: 13880/21873 cut-off events. [2024-06-28 01:32:46,683 INFO L125 PetriNetUnfolderBase]: For 768330/768353 co-relation queries the response was YES. [2024-06-28 01:32:46,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161133 conditions, 21873 events. 13880/21873 cut-off events. For 768330/768353 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 159523 event pairs, 3192 based on Foata normal form. 52/21476 useless extension candidates. Maximal degree in co-relation 161026. Up to 10622 conditions per place. [2024-06-28 01:32:46,963 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 394 selfloop transitions, 222 changer transitions 0/624 dead transitions. [2024-06-28 01:32:46,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 624 transitions, 10532 flow [2024-06-28 01:32:46,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:46,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:46,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-28 01:32:46,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768321513002365 [2024-06-28 01:32:46,965 INFO L175 Difference]: Start difference. First operand has 220 places, 423 transitions, 6598 flow. Second operand 9 states and 244 transitions. [2024-06-28 01:32:46,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 624 transitions, 10532 flow [2024-06-28 01:32:48,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 624 transitions, 10314 flow, removed 93 selfloop flow, removed 2 redundant places. [2024-06-28 01:32:48,985 INFO L231 Difference]: Finished difference. Result has 230 places, 483 transitions, 8070 flow [2024-06-28 01:32:48,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6470, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8070, PETRI_PLACES=230, PETRI_TRANSITIONS=483} [2024-06-28 01:32:48,986 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-06-28 01:32:48,986 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 483 transitions, 8070 flow [2024-06-28 01:32:48,986 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 01:32:48,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:48,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:48,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:32:48,986 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 01:32:48,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:48,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2026641474, now seen corresponding path program 3 times [2024-06-28 01:32:48,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:48,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742172900] [2024-06-28 01:32:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:48,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:49,675 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 01:32:49,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:49,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742172900] [2024-06-28 01:32:49,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742172900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:49,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:49,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:49,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46209008] [2024-06-28 01:32:49,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:49,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:49,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:49,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:49,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:49,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:49,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 483 transitions, 8070 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 01:32:49,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:49,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:49,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:55,407 INFO L124 PetriNetUnfolderBase]: 15464/24292 cut-off events. [2024-06-28 01:32:55,407 INFO L125 PetriNetUnfolderBase]: For 927827/927850 co-relation queries the response was YES. [2024-06-28 01:32:55,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188066 conditions, 24292 events. 15464/24292 cut-off events. For 927827/927850 co-relation queries the response was YES. Maximal size of possible extension queue 1155. Compared 179219 event pairs, 4167 based on Foata normal form. 52/23906 useless extension candidates. Maximal degree in co-relation 187954. Up to 15136 conditions per place. [2024-06-28 01:32:55,787 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 385 selfloop transitions, 236 changer transitions 0/629 dead transitions. [2024-06-28 01:32:55,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 629 transitions, 11311 flow [2024-06-28 01:32:55,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 01:32:55,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-06-28 01:32:55,798 INFO L175 Difference]: Start difference. First operand has 230 places, 483 transitions, 8070 flow. Second operand 9 states and 243 transitions. [2024-06-28 01:32:55,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 629 transitions, 11311 flow [2024-06-28 01:32:58,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 629 transitions, 10990 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:58,989 INFO L231 Difference]: Finished difference. Result has 237 places, 502 transitions, 8748 flow [2024-06-28 01:32:58,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7757, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8748, PETRI_PLACES=237, PETRI_TRANSITIONS=502} [2024-06-28 01:32:58,990 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 184 predicate places. [2024-06-28 01:32:58,990 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 502 transitions, 8748 flow [2024-06-28 01:32:58,990 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 01:32:58,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:58,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:58,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:32:58,990 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 01:32:58,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:58,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1119884040, now seen corresponding path program 4 times [2024-06-28 01:32:58,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:58,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612120840] [2024-06-28 01:32:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:58,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:59,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:59,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:59,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612120840] [2024-06-28 01:32:59,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612120840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:59,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:59,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:32:59,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780760700] [2024-06-28 01:32:59,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:59,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:32:59,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:59,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:32:59,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:32:59,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:32:59,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 502 transitions, 8748 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 01:32:59,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:59,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:32:59,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand