./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe035_power.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/safe035_power.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/safe035_power.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe035_power.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 01:02:28,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:02:28,148 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:02:28,153 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:02:28,154 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:02:28,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:02:28,184 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:02:28,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:02:28,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:02:28,189 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:02:28,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:02:28,190 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:02:28,191 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:02:28,192 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:02:28,193 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:02:28,193 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:02:28,193 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:02:28,193 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:02:28,194 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:02:28,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:02:28,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:02:28,195 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:02:28,195 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:02:28,195 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:02:28,195 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:02:28,196 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:02:28,196 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:02:28,196 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:02:28,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:02:28,197 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:02:28,198 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:02:28,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:02:28,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:02:28,199 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:02:28,199 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:02:28,199 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:02:28,199 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:02:28,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:02:28,200 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:02:28,200 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:02:28,200 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:02:28,200 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:02:28,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:02:28,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:02:28,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:02:28,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:02:28,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:02:28,520 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:02:28,520 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:02:28,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe035_power.yml/witness.yml [2024-06-28 01:02:28,703 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:02:28,704 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:02:28,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_power.i [2024-06-28 01:02:29,869 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:02:30,198 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:02:30,206 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_power.i [2024-06-28 01:02:30,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a10b986/5dd8dbcdf5d34a9196e1d45d12f813c5/FLAG5b54dc1b4 [2024-06-28 01:02:30,507 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7a10b986/5dd8dbcdf5d34a9196e1d45d12f813c5 [2024-06-28 01:02:30,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:02:30,509 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:02:30,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:02:30,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:02:30,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:02:30,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:02:28" (1/2) ... [2024-06-28 01:02:30,517 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26df497e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:02:30, skipping insertion in model container [2024-06-28 01:02:30,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:02:28" (1/2) ... [2024-06-28 01:02:30,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4bbfb343 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:02:30, skipping insertion in model container [2024-06-28 01:02:30,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:02:30" (2/2) ... [2024-06-28 01:02:30,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26df497e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:30, skipping insertion in model container [2024-06-28 01:02:30,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:02:30" (2/2) ... [2024-06-28 01:02:30,521 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:02:30,621 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:02:30,622 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] (((((((((((((((((! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:02:30,623 INFO L97 edCorrectnessWitness]: Location invariant before [L873-L873] (((((((((((((((((! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:02:30,623 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] (((((((((((((((((! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:02:30,623 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:02:30,623 INFO L106 edCorrectnessWitness]: ghost_update [L869-L869] multithreaded = 1; [2024-06-28 01:02:30,674 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:02:30,827 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/safe035_power.i[947,960] [2024-06-28 01:02:31,062 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:02:31,073 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:02:31,119 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/safe035_power.i[947,960] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:02:31,218 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:02:31,255 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:02:31,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31 WrapperNode [2024-06-28 01:02:31,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:02:31,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:02:31,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:02:31,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:02:31,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,326 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 171 [2024-06-28 01:02:31,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:02:31,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:02:31,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:02:31,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:02:31,336 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,341 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,360 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 01:02:31,360 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,360 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,385 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,387 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,392 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,397 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:02:31,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:02:31,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:02:31,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:02:31,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (1/1) ... [2024-06-28 01:02:31,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:02:31,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:02:31,445 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 01:02:31,478 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 01:02:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:02:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:02:31,498 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:02:31,499 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:02:31,499 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:02:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:02:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:02:31,500 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:02:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:02:31,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:02:31,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:02:31,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:02:31,503 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 01:02:31,689 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:02:31,691 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:02:32,139 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:02:32,140 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:02:32,386 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:02:32,386 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:02:32,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:02:32 BoogieIcfgContainer [2024-06-28 01:02:32,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:02:32,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:02:32,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:02:32,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:02:32,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:02:28" (1/4) ... [2024-06-28 01:02:32,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61688dd4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:02:32, skipping insertion in model container [2024-06-28 01:02:32,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:02:30" (2/4) ... [2024-06-28 01:02:32,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61688dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:02:32, skipping insertion in model container [2024-06-28 01:02:32,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:02:31" (3/4) ... [2024-06-28 01:02:32,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61688dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:02:32, skipping insertion in model container [2024-06-28 01:02:32,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:02:32" (4/4) ... [2024-06-28 01:02:32,397 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_power.i [2024-06-28 01:02:32,414 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:02:32,415 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:02:32,415 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:02:32,471 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:02:32,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 110 flow [2024-06-28 01:02:32,549 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-06-28 01:02:32,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:02:32,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-06-28 01:02:32,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 110 flow [2024-06-28 01:02:32,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 46 transitions, 101 flow [2024-06-28 01:02:32,571 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:02:32,580 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;@6eec6699, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:02:32,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:02:32,584 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:02:32,584 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:02:32,584 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:02:32,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:32,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:02:32,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:32,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:32,594 INFO L85 PathProgramCache]: Analyzing trace with hash 437841702, now seen corresponding path program 1 times [2024-06-28 01:02:32,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:32,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561603243] [2024-06-28 01:02:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:32,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:33,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:33,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561603243] [2024-06-28 01:02:33,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561603243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:33,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:33,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:02:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894130613] [2024-06-28 01:02:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:33,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:02:33,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:02:33,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:02:33,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:02:33,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 01:02:33,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:33,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:02:33,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:35,373 INFO L124 PetriNetUnfolderBase]: 6858/10759 cut-off events. [2024-06-28 01:02:35,373 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-06-28 01:02:35,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20598 conditions, 10759 events. 6858/10759 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 70066 event pairs, 5845 based on Foata normal form. 337/10373 useless extension candidates. Maximal degree in co-relation 20586. Up to 9723 conditions per place. [2024-06-28 01:02:35,455 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 46 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-28 01:02:35,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 239 flow [2024-06-28 01:02:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:02:35,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:02:35,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 01:02:35,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6462585034013606 [2024-06-28 01:02:35,468 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 101 flow. Second operand 3 states and 95 transitions. [2024-06-28 01:02:35,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 239 flow [2024-06-28 01:02:35,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:02:35,478 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 133 flow [2024-06-28 01:02:35,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-06-28 01:02:35,484 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2024-06-28 01:02:35,485 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 133 flow [2024-06-28 01:02:35,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 01:02:35,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:35,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:35,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:02:35,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:35,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash -140875835, now seen corresponding path program 1 times [2024-06-28 01:02:35,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:35,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555300236] [2024-06-28 01:02:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:35,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:36,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:36,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555300236] [2024-06-28 01:02:36,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555300236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:36,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:36,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:02:36,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116254859] [2024-06-28 01:02:36,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:36,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:02:36,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:36,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:02:36,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:02:36,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-06-28 01:02:36,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:36,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:36,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-06-28 01:02:36,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:37,728 INFO L124 PetriNetUnfolderBase]: 6837/10730 cut-off events. [2024-06-28 01:02:37,729 INFO L125 PetriNetUnfolderBase]: For 1391/1391 co-relation queries the response was YES. [2024-06-28 01:02:37,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22489 conditions, 10730 events. 6837/10730 cut-off events. For 1391/1391 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 69725 event pairs, 4476 based on Foata normal form. 9/10067 useless extension candidates. Maximal degree in co-relation 22477. Up to 9639 conditions per place. [2024-06-28 01:02:37,794 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 58 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2024-06-28 01:02:37,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 79 transitions, 357 flow [2024-06-28 01:02:37,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:02:37,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:02:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-28 01:02:37,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-06-28 01:02:37,798 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 133 flow. Second operand 4 states and 120 transitions. [2024-06-28 01:02:37,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 79 transitions, 357 flow [2024-06-28 01:02:37,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:02:37,801 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 220 flow [2024-06-28 01:02:37,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2024-06-28 01:02:37,803 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2024-06-28 01:02:37,803 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 220 flow [2024-06-28 01:02:37,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:37,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:37,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:37,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:02:37,807 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:37,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:37,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1457552539, now seen corresponding path program 1 times [2024-06-28 01:02:37,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:37,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65701918] [2024-06-28 01:02:37,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:37,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:38,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:38,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65701918] [2024-06-28 01:02:38,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65701918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:38,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:38,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:38,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041375264] [2024-06-28 01:02:38,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:38,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:38,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:38,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:38,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:38,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:02:38,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:38,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:38,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:02:38,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:40,718 INFO L124 PetriNetUnfolderBase]: 9045/13956 cut-off events. [2024-06-28 01:02:40,719 INFO L125 PetriNetUnfolderBase]: For 4695/4695 co-relation queries the response was YES. [2024-06-28 01:02:40,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32057 conditions, 13956 events. 9045/13956 cut-off events. For 4695/4695 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 89562 event pairs, 5940 based on Foata normal form. 8/13138 useless extension candidates. Maximal degree in co-relation 32041. Up to 12677 conditions per place. [2024-06-28 01:02:40,803 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 67 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-28 01:02:40,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 458 flow [2024-06-28 01:02:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:02:40,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:02:40,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 01:02:40,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061224489795918 [2024-06-28 01:02:40,806 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 220 flow. Second operand 5 states and 124 transitions. [2024-06-28 01:02:40,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 458 flow [2024-06-28 01:02:40,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 88 transitions, 452 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 01:02:40,813 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 278 flow [2024-06-28 01:02:40,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2024-06-28 01:02:40,815 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2024-06-28 01:02:40,815 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 278 flow [2024-06-28 01:02:40,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:40,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:40,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:40,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:02:40,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:40,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:40,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1401122051, now seen corresponding path program 1 times [2024-06-28 01:02:40,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:40,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897632974] [2024-06-28 01:02:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:40,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:42,634 INFO 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 01:02:42,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:42,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897632974] [2024-06-28 01:02:42,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897632974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:42,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:42,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:02:42,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066694846] [2024-06-28 01:02:42,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:42,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:02:42,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:42,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:02:42,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:02:42,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 49 [2024-06-28 01:02:42,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 278 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 01:02:42,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:42,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 49 [2024-06-28 01:02:42,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:44,383 INFO L124 PetriNetUnfolderBase]: 7949/12438 cut-off events. [2024-06-28 01:02:44,383 INFO L125 PetriNetUnfolderBase]: For 7315/7315 co-relation queries the response was YES. [2024-06-28 01:02:44,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30572 conditions, 12438 events. 7949/12438 cut-off events. For 7315/7315 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 81347 event pairs, 3315 based on Foata normal form. 6/11688 useless extension candidates. Maximal degree in co-relation 30553. Up to 11132 conditions per place. [2024-06-28 01:02:44,499 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 78 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2024-06-28 01:02:44,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 104 transitions, 577 flow [2024-06-28 01:02:44,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:44,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-28 01:02:44,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612244897959183 [2024-06-28 01:02:44,507 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 278 flow. Second operand 6 states and 165 transitions. [2024-06-28 01:02:44,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 104 transitions, 577 flow [2024-06-28 01:02:44,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 104 transitions, 547 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:02:44,516 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 329 flow [2024-06-28 01:02:44,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=329, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-28 01:02:44,518 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2024-06-28 01:02:44,518 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 329 flow [2024-06-28 01:02:44,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 01:02:44,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:44,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:44,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:02:44,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:44,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash 920226986, now seen corresponding path program 1 times [2024-06-28 01:02:44,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:44,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465525462] [2024-06-28 01:02:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:44,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:45,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:45,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465525462] [2024-06-28 01:02:45,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465525462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:45,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:45,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:45,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944904931] [2024-06-28 01:02:45,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:45,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:45,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:45,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:45,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:45,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:02:45,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 329 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 01:02:45,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:45,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:02:45,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:47,093 INFO L124 PetriNetUnfolderBase]: 9053/13960 cut-off events. [2024-06-28 01:02:47,093 INFO L125 PetriNetUnfolderBase]: For 12659/12659 co-relation queries the response was YES. [2024-06-28 01:02:47,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36789 conditions, 13960 events. 9053/13960 cut-off events. For 12659/12659 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 89447 event pairs, 4125 based on Foata normal form. 8/13149 useless extension candidates. Maximal degree in co-relation 36768. Up to 12528 conditions per place. [2024-06-28 01:02:47,191 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 86 selfloop transitions, 24 changer transitions 0/117 dead transitions. [2024-06-28 01:02:47,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 117 transitions, 727 flow [2024-06-28 01:02:47,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:47,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 01:02:47,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-06-28 01:02:47,195 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 329 flow. Second operand 6 states and 150 transitions. [2024-06-28 01:02:47,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 117 transitions, 727 flow [2024-06-28 01:02:47,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 682 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:02:47,215 INFO L231 Difference]: Finished difference. Result has 71 places, 83 transitions, 451 flow [2024-06-28 01:02:47,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=451, PETRI_PLACES=71, PETRI_TRANSITIONS=83} [2024-06-28 01:02:47,219 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 16 predicate places. [2024-06-28 01:02:47,219 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 83 transitions, 451 flow [2024-06-28 01:02:47,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 01:02:47,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:47,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:47,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:02:47,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:47,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:47,221 INFO L85 PathProgramCache]: Analyzing trace with hash 927815786, now seen corresponding path program 2 times [2024-06-28 01:02:47,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:47,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227607391] [2024-06-28 01:02:47,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:47,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:47,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:47,948 INFO 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 01:02:47,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:47,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227607391] [2024-06-28 01:02:47,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227607391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:47,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:47,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:02:47,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207281413] [2024-06-28 01:02:47,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:47,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:02:47,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:47,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:02:47,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:02:48,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:02:48,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 83 transitions, 451 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 01:02:48,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:48,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:02:48,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:49,757 INFO L124 PetriNetUnfolderBase]: 9029/13930 cut-off events. [2024-06-28 01:02:49,757 INFO L125 PetriNetUnfolderBase]: For 17845/17847 co-relation queries the response was YES. [2024-06-28 01:02:49,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39364 conditions, 13930 events. 9029/13930 cut-off events. For 17845/17847 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 89371 event pairs, 4127 based on Foata normal form. 10/13124 useless extension candidates. Maximal degree in co-relation 39340. Up to 12512 conditions per place. [2024-06-28 01:02:49,864 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 81 selfloop transitions, 24 changer transitions 0/112 dead transitions. [2024-06-28 01:02:49,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 112 transitions, 727 flow [2024-06-28 01:02:49,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:02:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:02:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:02:49,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:02:49,866 INFO L175 Difference]: Start difference. First operand has 71 places, 83 transitions, 451 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:02:49,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 112 transitions, 727 flow [2024-06-28 01:02:49,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 112 transitions, 685 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-28 01:02:49,901 INFO L231 Difference]: Finished difference. Result has 76 places, 83 transitions, 467 flow [2024-06-28 01:02:49,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=467, PETRI_PLACES=76, PETRI_TRANSITIONS=83} [2024-06-28 01:02:49,904 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2024-06-28 01:02:49,905 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 83 transitions, 467 flow [2024-06-28 01:02:49,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 01:02:49,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:49,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:49,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:02:49,906 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:49,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:49,906 INFO L85 PathProgramCache]: Analyzing trace with hash -339998273, now seen corresponding path program 1 times [2024-06-28 01:02:49,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:49,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168993136] [2024-06-28 01:02:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:49,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:50,002 INFO 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 01:02:50,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:50,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168993136] [2024-06-28 01:02:50,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168993136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:50,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:50,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:02:50,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490243551] [2024-06-28 01:02:50,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:50,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:02:50,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:02:50,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:02:50,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 49 [2024-06-28 01:02:50,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 83 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 01:02:50,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:50,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 49 [2024-06-28 01:02:50,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:51,125 INFO L124 PetriNetUnfolderBase]: 4089/7250 cut-off events. [2024-06-28 01:02:51,125 INFO L125 PetriNetUnfolderBase]: For 6878/7055 co-relation queries the response was YES. [2024-06-28 01:02:51,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17478 conditions, 7250 events. 4089/7250 cut-off events. For 6878/7055 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 53033 event pairs, 1487 based on Foata normal form. 17/6852 useless extension candidates. Maximal degree in co-relation 17452. Up to 5134 conditions per place. [2024-06-28 01:02:51,164 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 47 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-06-28 01:02:51,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 89 transitions, 564 flow [2024-06-28 01:02:51,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:02:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:02:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-28 01:02:51,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7006802721088435 [2024-06-28 01:02:51,166 INFO L175 Difference]: Start difference. First operand has 76 places, 83 transitions, 467 flow. Second operand 3 states and 103 transitions. [2024-06-28 01:02:51,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 89 transitions, 564 flow [2024-06-28 01:02:51,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 522 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:02:51,172 INFO L231 Difference]: Finished difference. Result has 73 places, 76 transitions, 394 flow [2024-06-28 01:02:51,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=73, PETRI_TRANSITIONS=76} [2024-06-28 01:02:51,173 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2024-06-28 01:02:51,173 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 76 transitions, 394 flow [2024-06-28 01:02:51,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 01:02:51,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:51,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:51,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:02:51,174 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:51,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:51,175 INFO L85 PathProgramCache]: Analyzing trace with hash -640197090, now seen corresponding path program 1 times [2024-06-28 01:02:51,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:51,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964364710] [2024-06-28 01:02:51,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:51,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:51,829 INFO 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 01:02:51,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:51,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964364710] [2024-06-28 01:02:51,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964364710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:51,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:51,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:02:51,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367978786] [2024-06-28 01:02:51,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:51,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:02:51,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:51,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:02:51,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:02:51,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:02:51,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 76 transitions, 394 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 01:02:51,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:51,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:02:51,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:53,033 INFO L124 PetriNetUnfolderBase]: 7589/11929 cut-off events. [2024-06-28 01:02:53,033 INFO L125 PetriNetUnfolderBase]: For 18762/18762 co-relation queries the response was YES. [2024-06-28 01:02:53,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32347 conditions, 11929 events. 7589/11929 cut-off events. For 18762/18762 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 76112 event pairs, 4666 based on Foata normal form. 1/11585 useless extension candidates. Maximal degree in co-relation 32321. Up to 10758 conditions per place. [2024-06-28 01:02:53,114 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 76 selfloop transitions, 10 changer transitions 0/97 dead transitions. [2024-06-28 01:02:53,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 656 flow [2024-06-28 01:02:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:02:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:02:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-28 01:02:53,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-28 01:02:53,116 INFO L175 Difference]: Start difference. First operand has 73 places, 76 transitions, 394 flow. Second operand 5 states and 112 transitions. [2024-06-28 01:02:53,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 656 flow [2024-06-28 01:02:53,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 97 transitions, 632 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:02:53,135 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 478 flow [2024-06-28 01:02:53,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-28 01:02:53,138 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 22 predicate places. [2024-06-28 01:02:53,138 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 478 flow [2024-06-28 01:02:53,138 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 01:02:53,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:53,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:53,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:02:53,139 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:53,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:53,139 INFO L85 PathProgramCache]: Analyzing trace with hash -429852215, now seen corresponding path program 1 times [2024-06-28 01:02:53,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:53,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199675840] [2024-06-28 01:02:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:54,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:54,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199675840] [2024-06-28 01:02:54,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199675840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:54,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:54,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:02:54,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712942541] [2024-06-28 01:02:54,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:54,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:02:54,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:54,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:02:54,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:02:54,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:02:54,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 478 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:54,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:54,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:02:54,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:56,182 INFO L124 PetriNetUnfolderBase]: 8045/12418 cut-off events. [2024-06-28 01:02:56,182 INFO L125 PetriNetUnfolderBase]: For 23803/23803 co-relation queries the response was YES. [2024-06-28 01:02:56,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35848 conditions, 12418 events. 8045/12418 cut-off events. For 23803/23803 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 77413 event pairs, 3370 based on Foata normal form. 8/12081 useless extension candidates. Maximal degree in co-relation 35819. Up to 11213 conditions per place. [2024-06-28 01:02:56,255 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 99 selfloop transitions, 21 changer transitions 1/128 dead transitions. [2024-06-28 01:02:56,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 128 transitions, 850 flow [2024-06-28 01:02:56,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:56,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:02:56,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48104956268221577 [2024-06-28 01:02:56,259 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 478 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:02:56,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 128 transitions, 850 flow [2024-06-28 01:02:56,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 128 transitions, 824 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 01:02:56,274 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 539 flow [2024-06-28 01:02:56,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=539, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-28 01:02:56,275 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-28 01:02:56,275 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 539 flow [2024-06-28 01:02:56,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:56,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:56,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:56,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:02:56,276 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:56,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:56,277 INFO L85 PathProgramCache]: Analyzing trace with hash -913219839, now seen corresponding path program 2 times [2024-06-28 01:02:56,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:56,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260154002] [2024-06-28 01:02:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:56,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:57,432 INFO 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 01:02:57,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260154002] [2024-06-28 01:02:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260154002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:57,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:57,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:02:57,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215710859] [2024-06-28 01:02:57,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:57,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:02:57,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:57,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:02:57,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:02:57,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:02:57,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 539 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:57,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:57,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:02:57,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:59,061 INFO L124 PetriNetUnfolderBase]: 7247/11312 cut-off events. [2024-06-28 01:02:59,061 INFO L125 PetriNetUnfolderBase]: For 28880/28880 co-relation queries the response was YES. [2024-06-28 01:02:59,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34975 conditions, 11312 events. 7247/11312 cut-off events. For 28880/28880 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 70890 event pairs, 2515 based on Foata normal form. 8/10974 useless extension candidates. Maximal degree in co-relation 34944. Up to 9754 conditions per place. [2024-06-28 01:02:59,113 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 96 selfloop transitions, 37 changer transitions 0/140 dead transitions. [2024-06-28 01:02:59,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 140 transitions, 1021 flow [2024-06-28 01:02:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:02:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:02:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:02:59,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014577259475219 [2024-06-28 01:02:59,115 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 539 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:02:59,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 140 transitions, 1021 flow [2024-06-28 01:02:59,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 140 transitions, 952 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:02:59,129 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 637 flow [2024-06-28 01:02:59,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=637, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2024-06-28 01:02:59,130 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2024-06-28 01:02:59,130 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 637 flow [2024-06-28 01:02:59,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:59,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:59,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:59,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:02:59,131 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:59,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:59,132 INFO L85 PathProgramCache]: Analyzing trace with hash 834441445, now seen corresponding path program 1 times [2024-06-28 01:02:59,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:59,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238022706] [2024-06-28 01:02:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:59,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:59,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:00,367 INFO 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 01:03:00,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:00,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238022706] [2024-06-28 01:03:00,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238022706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:00,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:00,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:03:00,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825375015] [2024-06-28 01:03:00,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:00,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:03:00,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:00,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:03:00,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:03:00,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:00,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 637 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:00,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:00,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:00,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:01,833 INFO L124 PetriNetUnfolderBase]: 7371/11431 cut-off events. [2024-06-28 01:03:01,834 INFO L125 PetriNetUnfolderBase]: For 37736/37736 co-relation queries the response was YES. [2024-06-28 01:03:01,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37486 conditions, 11431 events. 7371/11431 cut-off events. For 37736/37736 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 71064 event pairs, 2784 based on Foata normal form. 8/11110 useless extension candidates. Maximal degree in co-relation 37455. Up to 9888 conditions per place. [2024-06-28 01:03:01,914 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 121 selfloop transitions, 31 changer transitions 0/159 dead transitions. [2024-06-28 01:03:01,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 159 transitions, 1237 flow [2024-06-28 01:03:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:03:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:03:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:03:01,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131195335276968 [2024-06-28 01:03:01,916 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 637 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:03:01,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 159 transitions, 1237 flow [2024-06-28 01:03:01,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 159 transitions, 1177 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 01:03:01,956 INFO L231 Difference]: Finished difference. Result has 88 places, 105 transitions, 772 flow [2024-06-28 01:03:01,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=772, PETRI_PLACES=88, PETRI_TRANSITIONS=105} [2024-06-28 01:03:01,957 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2024-06-28 01:03:01,957 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 105 transitions, 772 flow [2024-06-28 01:03:01,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:01,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:01,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:01,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:03:01,958 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:01,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:01,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1517503901, now seen corresponding path program 3 times [2024-06-28 01:03:01,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:01,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630204725] [2024-06-28 01:03:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:01,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:02,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:02,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630204725] [2024-06-28 01:03:02,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630204725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:02,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:02,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:03:02,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818895888] [2024-06-28 01:03:02,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:02,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:03:02,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:02,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:03:02,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:03:03,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:03,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 105 transitions, 772 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:03,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:03,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:03,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:04,550 INFO L124 PetriNetUnfolderBase]: 7351/11486 cut-off events. [2024-06-28 01:03:04,550 INFO L125 PetriNetUnfolderBase]: For 44554/44560 co-relation queries the response was YES. [2024-06-28 01:03:04,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39581 conditions, 11486 events. 7351/11486 cut-off events. For 44554/44560 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 72325 event pairs, 2333 based on Foata normal form. 14/11145 useless extension candidates. Maximal degree in co-relation 39546. Up to 9914 conditions per place. [2024-06-28 01:03:04,623 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 101 selfloop transitions, 37 changer transitions 0/145 dead transitions. [2024-06-28 01:03:04,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 145 transitions, 1146 flow [2024-06-28 01:03:04,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:03:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:03:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:03:04,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868804664723032 [2024-06-28 01:03:04,625 INFO L175 Difference]: Start difference. First operand has 88 places, 105 transitions, 772 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:03:04,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 145 transitions, 1146 flow [2024-06-28 01:03:04,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 145 transitions, 1094 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 01:03:04,700 INFO L231 Difference]: Finished difference. Result has 93 places, 105 transitions, 803 flow [2024-06-28 01:03:04,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=803, PETRI_PLACES=93, PETRI_TRANSITIONS=105} [2024-06-28 01:03:04,701 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 38 predicate places. [2024-06-28 01:03:04,701 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 105 transitions, 803 flow [2024-06-28 01:03:04,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:04,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:04,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:04,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:03:04,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:04,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:04,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1062573235, now seen corresponding path program 2 times [2024-06-28 01:03:04,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:04,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056854863] [2024-06-28 01:03:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:04,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:05,757 INFO 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 01:03:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:05,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056854863] [2024-06-28 01:03:05,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056854863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:05,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:05,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:03:05,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678550408] [2024-06-28 01:03:05,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:05,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:03:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:05,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:03:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:03:05,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:05,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 105 transitions, 803 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:05,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:05,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:05,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:07,376 INFO L124 PetriNetUnfolderBase]: 7455/11626 cut-off events. [2024-06-28 01:03:07,377 INFO L125 PetriNetUnfolderBase]: For 48796/48798 co-relation queries the response was YES. [2024-06-28 01:03:07,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40789 conditions, 11626 events. 7455/11626 cut-off events. For 48796/48798 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 73097 event pairs, 2767 based on Foata normal form. 10/11281 useless extension candidates. Maximal degree in co-relation 40752. Up to 9928 conditions per place. [2024-06-28 01:03:07,446 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 118 selfloop transitions, 36 changer transitions 0/161 dead transitions. [2024-06-28 01:03:07,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 161 transitions, 1378 flow [2024-06-28 01:03:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:03:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:03:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:03:07,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043731778425656 [2024-06-28 01:03:07,448 INFO L175 Difference]: Start difference. First operand has 93 places, 105 transitions, 803 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:03:07,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 161 transitions, 1378 flow [2024-06-28 01:03:07,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 161 transitions, 1267 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:03:07,482 INFO L231 Difference]: Finished difference. Result has 94 places, 111 transitions, 853 flow [2024-06-28 01:03:07,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=853, PETRI_PLACES=94, PETRI_TRANSITIONS=111} [2024-06-28 01:03:07,483 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 39 predicate places. [2024-06-28 01:03:07,483 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 111 transitions, 853 flow [2024-06-28 01:03:07,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:07,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:07,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:07,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:03:07,484 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:07,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1062581605, now seen corresponding path program 3 times [2024-06-28 01:03:07,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:07,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171002851] [2024-06-28 01:03:07,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:07,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:08,614 INFO 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 01:03:08,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:08,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171002851] [2024-06-28 01:03:08,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171002851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:08,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:08,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:03:08,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115093955] [2024-06-28 01:03:08,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:08,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:03:08,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:08,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:03:08,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:03:08,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:08,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 111 transitions, 853 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:08,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:08,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:08,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:10,223 INFO L124 PetriNetUnfolderBase]: 7455/11633 cut-off events. [2024-06-28 01:03:10,223 INFO L125 PetriNetUnfolderBase]: For 54644/54644 co-relation queries the response was YES. [2024-06-28 01:03:10,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41605 conditions, 11633 events. 7455/11633 cut-off events. For 54644/54644 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 72797 event pairs, 3724 based on Foata normal form. 8/11284 useless extension candidates. Maximal degree in co-relation 41567. Up to 10382 conditions per place. [2024-06-28 01:03:10,295 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 126 selfloop transitions, 24 changer transitions 0/157 dead transitions. [2024-06-28 01:03:10,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 157 transitions, 1343 flow [2024-06-28 01:03:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:03:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:03:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:03:10,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47230320699708456 [2024-06-28 01:03:10,297 INFO L175 Difference]: Start difference. First operand has 94 places, 111 transitions, 853 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:03:10,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 157 transitions, 1343 flow [2024-06-28 01:03:10,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 157 transitions, 1252 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 01:03:10,343 INFO L231 Difference]: Finished difference. Result has 99 places, 118 transitions, 924 flow [2024-06-28 01:03:10,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=924, PETRI_PLACES=99, PETRI_TRANSITIONS=118} [2024-06-28 01:03:10,343 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 44 predicate places. [2024-06-28 01:03:10,344 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 118 transitions, 924 flow [2024-06-28 01:03:10,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:10,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:10,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:10,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:03:10,344 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:10,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:10,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1070924387, now seen corresponding path program 1 times [2024-06-28 01:03:10,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:10,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165102806] [2024-06-28 01:03:10,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:10,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:11,971 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 01:03:11,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:11,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165102806] [2024-06-28 01:03:11,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165102806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:11,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:11,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:03:11,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401265309] [2024-06-28 01:03:11,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:11,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:03:11,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:11,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:03:11,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:03:12,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:12,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 118 transitions, 924 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:12,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:12,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:12,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:13,700 INFO L124 PetriNetUnfolderBase]: 7447/11627 cut-off events. [2024-06-28 01:03:13,700 INFO L125 PetriNetUnfolderBase]: For 60956/60956 co-relation queries the response was YES. [2024-06-28 01:03:13,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42175 conditions, 11627 events. 7447/11627 cut-off events. For 60956/60956 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 73123 event pairs, 3669 based on Foata normal form. 4/11272 useless extension candidates. Maximal degree in co-relation 42134. Up to 10424 conditions per place. [2024-06-28 01:03:13,762 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 130 selfloop transitions, 22 changer transitions 0/159 dead transitions. [2024-06-28 01:03:13,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 159 transitions, 1372 flow [2024-06-28 01:03:13,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:03:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:03:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:03:13,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-28 01:03:13,765 INFO L175 Difference]: Start difference. First operand has 99 places, 118 transitions, 924 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:03:13,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 159 transitions, 1372 flow [2024-06-28 01:03:13,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 159 transitions, 1303 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 01:03:13,831 INFO L231 Difference]: Finished difference. Result has 102 places, 120 transitions, 936 flow [2024-06-28 01:03:13,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=936, PETRI_PLACES=102, PETRI_TRANSITIONS=120} [2024-06-28 01:03:13,832 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 47 predicate places. [2024-06-28 01:03:13,832 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 120 transitions, 936 flow [2024-06-28 01:03:13,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:13,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:13,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:13,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:03:13,833 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:13,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:13,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1651072217, now seen corresponding path program 1 times [2024-06-28 01:03:13,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:13,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328754517] [2024-06-28 01:03:13,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:13,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:14,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:14,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328754517] [2024-06-28 01:03:14,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328754517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:14,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:14,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:03:14,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355600026] [2024-06-28 01:03:14,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:14,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:03:14,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:14,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:03:14,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:03:14,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:03:14,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 120 transitions, 936 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 01:03:14,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:14,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:03:14,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:16,001 INFO L124 PetriNetUnfolderBase]: 7078/10823 cut-off events. [2024-06-28 01:03:16,001 INFO L125 PetriNetUnfolderBase]: For 66064/66078 co-relation queries the response was YES. [2024-06-28 01:03:16,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40759 conditions, 10823 events. 7078/10823 cut-off events. For 66064/66078 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 66706 event pairs, 3877 based on Foata normal form. 1/10583 useless extension candidates. Maximal degree in co-relation 40717. Up to 10002 conditions per place. [2024-06-28 01:03:16,093 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 112 selfloop transitions, 14 changer transitions 0/143 dead transitions. [2024-06-28 01:03:16,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 143 transitions, 1274 flow [2024-06-28 01:03:16,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:03:16,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:03:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 01:03:16,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489795918367347 [2024-06-28 01:03:16,095 INFO L175 Difference]: Start difference. First operand has 102 places, 120 transitions, 936 flow. Second operand 6 states and 132 transitions. [2024-06-28 01:03:16,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 143 transitions, 1274 flow [2024-06-28 01:03:16,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 143 transitions, 1215 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:03:16,157 INFO L231 Difference]: Finished difference. Result has 103 places, 124 transitions, 959 flow [2024-06-28 01:03:16,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=959, PETRI_PLACES=103, PETRI_TRANSITIONS=124} [2024-06-28 01:03:16,157 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 48 predicate places. [2024-06-28 01:03:16,157 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 124 transitions, 959 flow [2024-06-28 01:03:16,158 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 01:03:16,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:16,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:16,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:03:16,158 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:16,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:16,158 INFO L85 PathProgramCache]: Analyzing trace with hash -356858611, now seen corresponding path program 1 times [2024-06-28 01:03:16,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:16,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63145719] [2024-06-28 01:03:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:16,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:16,804 INFO 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 01:03:16,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:16,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63145719] [2024-06-28 01:03:16,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63145719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:16,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:16,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:03:16,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765491465] [2024-06-28 01:03:16,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:16,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:03:16,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:16,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:03:16,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:03:16,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:03:16,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 124 transitions, 959 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 01:03:16,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:16,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:03:16,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:18,340 INFO L124 PetriNetUnfolderBase]: 7127/10896 cut-off events. [2024-06-28 01:03:18,341 INFO L125 PetriNetUnfolderBase]: For 73815/73826 co-relation queries the response was YES. [2024-06-28 01:03:18,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42585 conditions, 10896 events. 7127/10896 cut-off events. For 73815/73826 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 66938 event pairs, 3077 based on Foata normal form. 7/10668 useless extension candidates. Maximal degree in co-relation 42542. Up to 9997 conditions per place. [2024-06-28 01:03:18,419 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 118 selfloop transitions, 25 changer transitions 0/160 dead transitions. [2024-06-28 01:03:18,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 160 transitions, 1387 flow [2024-06-28 01:03:18,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:03:18,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:03:18,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:03:18,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-28 01:03:18,421 INFO L175 Difference]: Start difference. First operand has 103 places, 124 transitions, 959 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:03:18,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 160 transitions, 1387 flow [2024-06-28 01:03:18,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 160 transitions, 1341 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:03:18,491 INFO L231 Difference]: Finished difference. Result has 106 places, 133 transitions, 1065 flow [2024-06-28 01:03:18,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1065, PETRI_PLACES=106, PETRI_TRANSITIONS=133} [2024-06-28 01:03:18,492 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 51 predicate places. [2024-06-28 01:03:18,492 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 133 transitions, 1065 flow [2024-06-28 01:03:18,492 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 01:03:18,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:18,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:18,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:03:18,493 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:18,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:18,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1049024131, now seen corresponding path program 2 times [2024-06-28 01:03:18,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:18,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19027384] [2024-06-28 01:03:18,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:18,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:19,053 INFO 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 01:03:19,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:19,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19027384] [2024-06-28 01:03:19,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19027384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:19,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:19,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:03:19,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414596104] [2024-06-28 01:03:19,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:19,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:03:19,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:19,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:03:19,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:03:19,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:03:19,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 133 transitions, 1065 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 01:03:19,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:19,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:03:19,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:20,404 INFO L124 PetriNetUnfolderBase]: 7207/11447 cut-off events. [2024-06-28 01:03:20,404 INFO L125 PetriNetUnfolderBase]: For 86384/86398 co-relation queries the response was YES. [2024-06-28 01:03:20,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46266 conditions, 11447 events. 7207/11447 cut-off events. For 86384/86398 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 73585 event pairs, 3061 based on Foata normal form. 10/11079 useless extension candidates. Maximal degree in co-relation 46221. Up to 9905 conditions per place. [2024-06-28 01:03:20,497 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 118 selfloop transitions, 37 changer transitions 0/172 dead transitions. [2024-06-28 01:03:20,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 172 transitions, 1615 flow [2024-06-28 01:03:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:03:20,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:03:20,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:03:20,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2024-06-28 01:03:20,498 INFO L175 Difference]: Start difference. First operand has 106 places, 133 transitions, 1065 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:03:20,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 172 transitions, 1615 flow [2024-06-28 01:03:20,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 172 transitions, 1560 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 01:03:20,580 INFO L231 Difference]: Finished difference. Result has 111 places, 146 transitions, 1263 flow [2024-06-28 01:03:20,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1263, PETRI_PLACES=111, PETRI_TRANSITIONS=146} [2024-06-28 01:03:20,581 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 56 predicate places. [2024-06-28 01:03:20,581 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 146 transitions, 1263 flow [2024-06-28 01:03:20,581 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 01:03:20,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:20,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:20,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:03:20,582 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:20,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash 142108615, now seen corresponding path program 1 times [2024-06-28 01:03:20,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500621951] [2024-06-28 01:03:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:21,150 INFO 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 01:03:21,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:21,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500621951] [2024-06-28 01:03:21,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500621951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:21,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:21,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:03:21,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651117090] [2024-06-28 01:03:21,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:21,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:03:21,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:21,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:03:21,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:03:21,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:21,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 146 transitions, 1263 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:03:21,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:21,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:21,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:22,528 INFO L124 PetriNetUnfolderBase]: 7685/11957 cut-off events. [2024-06-28 01:03:22,528 INFO L125 PetriNetUnfolderBase]: For 100691/100691 co-relation queries the response was YES. [2024-06-28 01:03:22,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51329 conditions, 11957 events. 7685/11957 cut-off events. For 100691/100691 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 74505 event pairs, 3432 based on Foata normal form. 4/11598 useless extension candidates. Maximal degree in co-relation 51281. Up to 10811 conditions per place. [2024-06-28 01:03:22,614 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 155 selfloop transitions, 14 changer transitions 0/176 dead transitions. [2024-06-28 01:03:22,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 176 transitions, 1748 flow [2024-06-28 01:03:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:03:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:03:22,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-28 01:03:22,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2024-06-28 01:03:22,616 INFO L175 Difference]: Start difference. First operand has 111 places, 146 transitions, 1263 flow. Second operand 6 states and 130 transitions. [2024-06-28 01:03:22,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 176 transitions, 1748 flow [2024-06-28 01:03:22,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 176 transitions, 1682 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 01:03:22,727 INFO L231 Difference]: Finished difference. Result has 116 places, 154 transitions, 1334 flow [2024-06-28 01:03:22,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1334, PETRI_PLACES=116, PETRI_TRANSITIONS=154} [2024-06-28 01:03:22,727 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2024-06-28 01:03:22,727 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 154 transitions, 1334 flow [2024-06-28 01:03:22,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:03:22,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:22,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:22,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:03:22,728 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:22,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:22,729 INFO L85 PathProgramCache]: Analyzing trace with hash -356376437, now seen corresponding path program 2 times [2024-06-28 01:03:22,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:22,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397418796] [2024-06-28 01:03:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:22,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:23,284 INFO 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 01:03:23,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:23,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397418796] [2024-06-28 01:03:23,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397418796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:23,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:23,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:03:23,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458700479] [2024-06-28 01:03:23,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:23,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:03:23,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:23,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:03:23,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:03:23,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:23,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 154 transitions, 1334 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:03:23,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:23,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:23,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:24,835 INFO L124 PetriNetUnfolderBase]: 7730/12019 cut-off events. [2024-06-28 01:03:24,835 INFO L125 PetriNetUnfolderBase]: For 111281/111283 co-relation queries the response was YES. [2024-06-28 01:03:24,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53927 conditions, 12019 events. 7730/12019 cut-off events. For 111281/111283 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 74797 event pairs, 3396 based on Foata normal form. 6/11662 useless extension candidates. Maximal degree in co-relation 53876. Up to 10827 conditions per place. [2024-06-28 01:03:24,910 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 153 selfloop transitions, 21 changer transitions 0/181 dead transitions. [2024-06-28 01:03:24,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 181 transitions, 1828 flow [2024-06-28 01:03:24,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:03:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:03:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 01:03:24,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 01:03:24,912 INFO L175 Difference]: Start difference. First operand has 116 places, 154 transitions, 1334 flow. Second operand 6 states and 133 transitions. [2024-06-28 01:03:24,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 181 transitions, 1828 flow [2024-06-28 01:03:25,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 181 transitions, 1772 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 01:03:25,028 INFO L231 Difference]: Finished difference. Result has 119 places, 158 transitions, 1391 flow [2024-06-28 01:03:25,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1391, PETRI_PLACES=119, PETRI_TRANSITIONS=158} [2024-06-28 01:03:25,028 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2024-06-28 01:03:25,028 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 158 transitions, 1391 flow [2024-06-28 01:03:25,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:03:25,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:25,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:25,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:03:25,029 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:25,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:25,029 INFO L85 PathProgramCache]: Analyzing trace with hash -356366517, now seen corresponding path program 1 times [2024-06-28 01:03:25,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:25,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937878061] [2024-06-28 01:03:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:25,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:26,231 INFO 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 01:03:26,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:26,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937878061] [2024-06-28 01:03:26,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937878061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:26,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:26,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:03:26,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954152916] [2024-06-28 01:03:26,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:26,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:03:26,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:03:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:03:26,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:03:26,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 158 transitions, 1391 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:26,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:26,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:03:26,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:27,786 INFO L124 PetriNetUnfolderBase]: 7322/11594 cut-off events. [2024-06-28 01:03:27,786 INFO L125 PetriNetUnfolderBase]: For 121376/121390 co-relation queries the response was YES. [2024-06-28 01:03:27,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53643 conditions, 11594 events. 7322/11594 cut-off events. For 121376/121390 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 74285 event pairs, 3397 based on Foata normal form. 1/11208 useless extension candidates. Maximal degree in co-relation 53591. Up to 10310 conditions per place. [2024-06-28 01:03:27,882 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 149 selfloop transitions, 21 changer transitions 0/187 dead transitions. [2024-06-28 01:03:27,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 187 transitions, 1897 flow [2024-06-28 01:03:27,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:03:27,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:03:27,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 01:03:27,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-28 01:03:27,884 INFO L175 Difference]: Start difference. First operand has 119 places, 158 transitions, 1391 flow. Second operand 8 states and 164 transitions. [2024-06-28 01:03:27,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 187 transitions, 1897 flow [2024-06-28 01:03:28,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 187 transitions, 1818 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 01:03:28,013 INFO L231 Difference]: Finished difference. Result has 123 places, 165 transitions, 1469 flow [2024-06-28 01:03:28,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1469, PETRI_PLACES=123, PETRI_TRANSITIONS=165} [2024-06-28 01:03:28,013 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 68 predicate places. [2024-06-28 01:03:28,013 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 165 transitions, 1469 flow [2024-06-28 01:03:28,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:28,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:28,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:28,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:03:28,014 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:28,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:28,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1438108632, now seen corresponding path program 1 times [2024-06-28 01:03:28,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:28,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640403975] [2024-06-28 01:03:28,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:28,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:29,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:29,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640403975] [2024-06-28 01:03:29,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640403975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:29,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:29,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:03:29,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339802697] [2024-06-28 01:03:29,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:29,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:03:29,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:29,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:03:29,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:03:29,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:29,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 165 transitions, 1469 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:29,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:29,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:29,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:31,372 INFO L124 PetriNetUnfolderBase]: 7887/12251 cut-off events. [2024-06-28 01:03:31,372 INFO L125 PetriNetUnfolderBase]: For 145306/145306 co-relation queries the response was YES. [2024-06-28 01:03:31,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58249 conditions, 12251 events. 7887/12251 cut-off events. For 145306/145306 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 76193 event pairs, 2510 based on Foata normal form. 8/11895 useless extension candidates. Maximal degree in co-relation 58196. Up to 10778 conditions per place. [2024-06-28 01:03:31,483 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 191 selfloop transitions, 33 changer transitions 0/231 dead transitions. [2024-06-28 01:03:31,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 231 transitions, 2279 flow [2024-06-28 01:03:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:03:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:03:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 01:03:31,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47845804988662133 [2024-06-28 01:03:31,485 INFO L175 Difference]: Start difference. First operand has 123 places, 165 transitions, 1469 flow. Second operand 9 states and 211 transitions. [2024-06-28 01:03:31,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 231 transitions, 2279 flow [2024-06-28 01:03:31,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 231 transitions, 2175 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 01:03:31,641 INFO L231 Difference]: Finished difference. Result has 129 places, 171 transitions, 1565 flow [2024-06-28 01:03:31,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1565, PETRI_PLACES=129, PETRI_TRANSITIONS=171} [2024-06-28 01:03:31,642 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 74 predicate places. [2024-06-28 01:03:31,642 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 171 transitions, 1565 flow [2024-06-28 01:03:31,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:31,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:31,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:31,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:03:31,642 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:31,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:31,642 INFO L85 PathProgramCache]: Analyzing trace with hash -690777568, now seen corresponding path program 2 times [2024-06-28 01:03:31,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514808447] [2024-06-28 01:03:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:31,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:33,082 INFO 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 01:03:33,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:33,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514808447] [2024-06-28 01:03:33,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514808447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:33,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:33,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:03:33,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716159318] [2024-06-28 01:03:33,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:33,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:03:33,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:33,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:03:33,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:03:33,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:33,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 171 transitions, 1565 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:33,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:33,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:33,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:35,073 INFO L124 PetriNetUnfolderBase]: 7871/12227 cut-off events. [2024-06-28 01:03:35,073 INFO L125 PetriNetUnfolderBase]: For 157945/157945 co-relation queries the response was YES. [2024-06-28 01:03:35,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59418 conditions, 12227 events. 7871/12227 cut-off events. For 157945/157945 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 76183 event pairs, 2935 based on Foata normal form. 8/11871 useless extension candidates. Maximal degree in co-relation 59363. Up to 10888 conditions per place. [2024-06-28 01:03:35,191 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 186 selfloop transitions, 27 changer transitions 0/220 dead transitions. [2024-06-28 01:03:35,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 220 transitions, 2135 flow [2024-06-28 01:03:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:03:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:03:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:03:35,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2024-06-28 01:03:35,193 INFO L175 Difference]: Start difference. First operand has 129 places, 171 transitions, 1565 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:03:35,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 220 transitions, 2135 flow [2024-06-28 01:03:35,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 220 transitions, 2002 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 01:03:35,430 INFO L231 Difference]: Finished difference. Result has 132 places, 171 transitions, 1494 flow [2024-06-28 01:03:35,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1494, PETRI_PLACES=132, PETRI_TRANSITIONS=171} [2024-06-28 01:03:35,431 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 77 predicate places. [2024-06-28 01:03:35,431 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 171 transitions, 1494 flow [2024-06-28 01:03:35,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:35,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:35,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:35,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:03:35,432 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:35,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:35,432 INFO L85 PathProgramCache]: Analyzing trace with hash -771072440, now seen corresponding path program 1 times [2024-06-28 01:03:35,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:35,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990876553] [2024-06-28 01:03:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:35,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:36,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:36,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990876553] [2024-06-28 01:03:36,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990876553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:36,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:36,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:03:36,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764269089] [2024-06-28 01:03:36,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:36,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:03:36,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:36,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:03:36,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:03:36,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:36,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 171 transitions, 1494 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:36,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:36,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:36,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:38,917 INFO L124 PetriNetUnfolderBase]: 7995/12420 cut-off events. [2024-06-28 01:03:38,918 INFO L125 PetriNetUnfolderBase]: For 165191/165191 co-relation queries the response was YES. [2024-06-28 01:03:38,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60366 conditions, 12420 events. 7995/12420 cut-off events. For 165191/165191 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 77649 event pairs, 2981 based on Foata normal form. 8/12057 useless extension candidates. Maximal degree in co-relation 60309. Up to 11001 conditions per place. [2024-06-28 01:03:39,037 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 194 selfloop transitions, 34 changer transitions 0/235 dead transitions. [2024-06-28 01:03:39,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 235 transitions, 2278 flow [2024-06-28 01:03:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:03:39,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:03:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:03:39,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:03:39,040 INFO L175 Difference]: Start difference. First operand has 132 places, 171 transitions, 1494 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:03:39,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 235 transitions, 2278 flow [2024-06-28 01:03:39,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 235 transitions, 2216 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:03:39,218 INFO L231 Difference]: Finished difference. Result has 135 places, 180 transitions, 1683 flow [2024-06-28 01:03:39,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1683, PETRI_PLACES=135, PETRI_TRANSITIONS=180} [2024-06-28 01:03:39,218 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 80 predicate places. [2024-06-28 01:03:39,219 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 180 transitions, 1683 flow [2024-06-28 01:03:39,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:39,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:39,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:39,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:03:39,219 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:39,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:39,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1107395192, now seen corresponding path program 2 times [2024-06-28 01:03:39,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:39,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449581980] [2024-06-28 01:03:39,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:39,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:40,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:40,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449581980] [2024-06-28 01:03:40,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449581980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:40,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:40,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:03:40,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713232307] [2024-06-28 01:03:40,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:40,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:03:40,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:40,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:03:40,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:03:40,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:40,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 180 transitions, 1683 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:40,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:40,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:40,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:42,633 INFO L124 PetriNetUnfolderBase]: 8243/12771 cut-off events. [2024-06-28 01:03:42,633 INFO L125 PetriNetUnfolderBase]: For 187372/187374 co-relation queries the response was YES. [2024-06-28 01:03:42,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64814 conditions, 12771 events. 8243/12771 cut-off events. For 187372/187374 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 79744 event pairs, 2301 based on Foata normal form. 8/12406 useless extension candidates. Maximal degree in co-relation 64754. Up to 10220 conditions per place. [2024-06-28 01:03:42,734 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 189 selfloop transitions, 65 changer transitions 0/261 dead transitions. [2024-06-28 01:03:42,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 261 transitions, 2859 flow [2024-06-28 01:03:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:03:42,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:03:42,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:03:42,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 01:03:42,736 INFO L175 Difference]: Start difference. First operand has 135 places, 180 transitions, 1683 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:03:42,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 261 transitions, 2859 flow [2024-06-28 01:03:42,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 261 transitions, 2730 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 01:03:42,961 INFO L231 Difference]: Finished difference. Result has 140 places, 190 transitions, 1879 flow [2024-06-28 01:03:42,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1879, PETRI_PLACES=140, PETRI_TRANSITIONS=190} [2024-06-28 01:03:42,962 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 85 predicate places. [2024-06-28 01:03:42,962 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 190 transitions, 1879 flow [2024-06-28 01:03:42,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:42,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:42,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:42,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:03:42,962 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:42,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1107401702, now seen corresponding path program 3 times [2024-06-28 01:03:42,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:42,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679597094] [2024-06-28 01:03:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:42,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:44,175 INFO 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 01:03:44,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:44,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679597094] [2024-06-28 01:03:44,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679597094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:44,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:44,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:03:44,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107681471] [2024-06-28 01:03:44,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:44,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:03:44,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:44,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:03:44,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:03:44,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:44,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 190 transitions, 1879 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:44,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:44,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:44,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:46,421 INFO L124 PetriNetUnfolderBase]: 8223/12755 cut-off events. [2024-06-28 01:03:46,421 INFO L125 PetriNetUnfolderBase]: For 202610/202612 co-relation queries the response was YES. [2024-06-28 01:03:46,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66799 conditions, 12755 events. 8223/12755 cut-off events. For 202610/202612 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 79703 event pairs, 2377 based on Foata normal form. 8/12386 useless extension candidates. Maximal degree in co-relation 66737. Up to 10208 conditions per place. [2024-06-28 01:03:46,534 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 183 selfloop transitions, 69 changer transitions 0/259 dead transitions. [2024-06-28 01:03:46,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 259 transitions, 2821 flow [2024-06-28 01:03:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:03:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:03:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:03:46,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255102040816326 [2024-06-28 01:03:46,535 INFO L175 Difference]: Start difference. First operand has 140 places, 190 transitions, 1879 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:03:46,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 259 transitions, 2821 flow [2024-06-28 01:03:46,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 259 transitions, 2712 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 01:03:46,812 INFO L231 Difference]: Finished difference. Result has 145 places, 192 transitions, 1960 flow [2024-06-28 01:03:46,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1960, PETRI_PLACES=145, PETRI_TRANSITIONS=192} [2024-06-28 01:03:46,813 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 90 predicate places. [2024-06-28 01:03:46,813 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 192 transitions, 1960 flow [2024-06-28 01:03:46,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:46,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:46,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:46,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:03:46,814 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:46,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:46,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1433521872, now seen corresponding path program 3 times [2024-06-28 01:03:46,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:46,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546040509] [2024-06-28 01:03:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:46,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:48,248 INFO 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 01:03:48,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:48,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546040509] [2024-06-28 01:03:48,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546040509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:48,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:48,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:03:48,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250053542] [2024-06-28 01:03:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:03:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:03:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:03:48,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:48,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 192 transitions, 1960 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:48,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:48,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:48,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:50,548 INFO L124 PetriNetUnfolderBase]: 8291/12866 cut-off events. [2024-06-28 01:03:50,548 INFO L125 PetriNetUnfolderBase]: For 207132/207134 co-relation queries the response was YES. [2024-06-28 01:03:50,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67609 conditions, 12866 events. 8291/12866 cut-off events. For 207132/207134 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 80550 event pairs, 2619 based on Foata normal form. 8/12494 useless extension candidates. Maximal degree in co-relation 67545. Up to 11141 conditions per place. [2024-06-28 01:03:50,654 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 195 selfloop transitions, 45 changer transitions 0/247 dead transitions. [2024-06-28 01:03:50,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 247 transitions, 2674 flow [2024-06-28 01:03:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:03:50,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:03:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:03:50,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:03:50,661 INFO L175 Difference]: Start difference. First operand has 145 places, 192 transitions, 1960 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:03:50,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 247 transitions, 2674 flow [2024-06-28 01:03:50,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 247 transitions, 2555 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:03:50,911 INFO L231 Difference]: Finished difference. Result has 148 places, 195 transitions, 2017 flow [2024-06-28 01:03:50,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2017, PETRI_PLACES=148, PETRI_TRANSITIONS=195} [2024-06-28 01:03:50,911 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 93 predicate places. [2024-06-28 01:03:50,912 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 195 transitions, 2017 flow [2024-06-28 01:03:50,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:50,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:50,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:50,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:03:50,912 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:50,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:50,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1425403699, now seen corresponding path program 1 times [2024-06-28 01:03:50,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:50,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514483687] [2024-06-28 01:03:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:50,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:51,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:51,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514483687] [2024-06-28 01:03:51,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514483687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:51,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:51,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:03:51,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21105589] [2024-06-28 01:03:51,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:51,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:03:51,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:51,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:03:51,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:03:51,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:03:51,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 195 transitions, 2017 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:51,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:51,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:03:51,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:53,605 INFO L124 PetriNetUnfolderBase]: 7873/12409 cut-off events. [2024-06-28 01:03:53,606 INFO L125 PetriNetUnfolderBase]: For 219665/219694 co-relation queries the response was YES. [2024-06-28 01:03:53,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66419 conditions, 12409 events. 7873/12409 cut-off events. For 219665/219694 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 79754 event pairs, 2946 based on Foata normal form. 3/11996 useless extension candidates. Maximal degree in co-relation 66354. Up to 10986 conditions per place. [2024-06-28 01:03:53,692 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 181 selfloop transitions, 36 changer transitions 0/234 dead transitions. [2024-06-28 01:03:53,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 234 transitions, 2696 flow [2024-06-28 01:03:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:03:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:03:53,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:03:53,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:03:53,693 INFO L175 Difference]: Start difference. First operand has 148 places, 195 transitions, 2017 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:03:53,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 234 transitions, 2696 flow [2024-06-28 01:03:53,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 234 transitions, 2530 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 01:03:53,954 INFO L231 Difference]: Finished difference. Result has 149 places, 207 transitions, 2133 flow [2024-06-28 01:03:53,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2133, PETRI_PLACES=149, PETRI_TRANSITIONS=207} [2024-06-28 01:03:53,954 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 94 predicate places. [2024-06-28 01:03:53,954 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 207 transitions, 2133 flow [2024-06-28 01:03:53,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:53,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:53,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:53,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:03:53,955 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:53,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:53,956 INFO L85 PathProgramCache]: Analyzing trace with hash -483466968, now seen corresponding path program 1 times [2024-06-28 01:03:53,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:53,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090983064] [2024-06-28 01:03:53,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:53,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:55,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:55,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090983064] [2024-06-28 01:03:55,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090983064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:55,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:55,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:03:55,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895672685] [2024-06-28 01:03:55,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:55,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:03:55,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:55,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:03:55,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:03:55,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:03:55,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 207 transitions, 2133 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:55,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:55,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:03:55,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:57,301 INFO L124 PetriNetUnfolderBase]: 8474/13000 cut-off events. [2024-06-28 01:03:57,301 INFO L125 PetriNetUnfolderBase]: For 233401/233403 co-relation queries the response was YES. [2024-06-28 01:03:57,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70397 conditions, 13000 events. 8474/13000 cut-off events. For 233401/233403 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 80153 event pairs, 2868 based on Foata normal form. 8/12670 useless extension candidates. Maximal degree in co-relation 70330. Up to 11194 conditions per place. [2024-06-28 01:03:57,419 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 210 selfloop transitions, 70 changer transitions 0/287 dead transitions. [2024-06-28 01:03:57,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 287 transitions, 3204 flow [2024-06-28 01:03:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:03:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:03:57,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:03:57,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076530612244898 [2024-06-28 01:03:57,420 INFO L175 Difference]: Start difference. First operand has 149 places, 207 transitions, 2133 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:03:57,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 287 transitions, 3204 flow [2024-06-28 01:03:57,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 287 transitions, 3134 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-28 01:03:57,957 INFO L231 Difference]: Finished difference. Result has 157 places, 227 transitions, 2575 flow [2024-06-28 01:03:57,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2575, PETRI_PLACES=157, PETRI_TRANSITIONS=227} [2024-06-28 01:03:57,958 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 102 predicate places. [2024-06-28 01:03:57,958 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 227 transitions, 2575 flow [2024-06-28 01:03:57,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:57,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:57,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:03:57,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:03:57,959 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:57,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:57,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1425763144, now seen corresponding path program 1 times [2024-06-28 01:03:57,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:57,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976316571] [2024-06-28 01:03:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:57,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:58,677 INFO 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 01:03:58,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976316571] [2024-06-28 01:03:58,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976316571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:58,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:58,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:03:58,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026044977] [2024-06-28 01:03:58,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:58,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:03:58,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:03:58,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:03:58,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:03:58,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 227 transitions, 2575 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:58,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:58,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:03:58,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:00,501 INFO L124 PetriNetUnfolderBase]: 8108/12744 cut-off events. [2024-06-28 01:04:00,501 INFO L125 PetriNetUnfolderBase]: For 248778/248809 co-relation queries the response was YES. [2024-06-28 01:04:00,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70461 conditions, 12744 events. 8108/12744 cut-off events. For 248778/248809 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 81829 event pairs, 2921 based on Foata normal form. 13/12348 useless extension candidates. Maximal degree in co-relation 70390. Up to 11246 conditions per place. [2024-06-28 01:04:00,617 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 204 selfloop transitions, 36 changer transitions 0/263 dead transitions. [2024-06-28 01:04:00,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 263 transitions, 3209 flow [2024-06-28 01:04:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:04:00,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:04:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:04:00,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752186588921283 [2024-06-28 01:04:00,619 INFO L175 Difference]: Start difference. First operand has 157 places, 227 transitions, 2575 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:04:00,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 263 transitions, 3209 flow [2024-06-28 01:04:01,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 263 transitions, 3057 flow, removed 75 selfloop flow, removed 1 redundant places. [2024-06-28 01:04:01,118 INFO L231 Difference]: Finished difference. Result has 163 places, 231 transitions, 2570 flow [2024-06-28 01:04:01,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2570, PETRI_PLACES=163, PETRI_TRANSITIONS=231} [2024-06-28 01:04:01,118 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 108 predicate places. [2024-06-28 01:04:01,119 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 231 transitions, 2570 flow [2024-06-28 01:04:01,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:01,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:01,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:01,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:04:01,119 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:01,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:01,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1644262750, now seen corresponding path program 4 times [2024-06-28 01:04:01,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:01,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562650507] [2024-06-28 01:04:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:01,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:02,319 INFO 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 01:04:02,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:02,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562650507] [2024-06-28 01:04:02,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562650507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:02,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:02,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:04:02,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542749159] [2024-06-28 01:04:02,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:02,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:04:02,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:02,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:04:02,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:04:02,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:02,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 231 transitions, 2570 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:02,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:02,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:02,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:04,574 INFO L124 PetriNetUnfolderBase]: 8638/13349 cut-off events. [2024-06-28 01:04:04,574 INFO L125 PetriNetUnfolderBase]: For 260487/260487 co-relation queries the response was YES. [2024-06-28 01:04:04,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73735 conditions, 13349 events. 8638/13349 cut-off events. For 260487/260487 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 83396 event pairs, 3266 based on Foata normal form. 8/12977 useless extension candidates. Maximal degree in co-relation 73661. Up to 11937 conditions per place. [2024-06-28 01:04:04,716 INFO L140 encePairwiseOnDemand]: 37/49 looper letters, 246 selfloop transitions, 30 changer transitions 0/283 dead transitions. [2024-06-28 01:04:04,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 283 transitions, 3354 flow [2024-06-28 01:04:04,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:04:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:04:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:04:04,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744897959183674 [2024-06-28 01:04:04,717 INFO L175 Difference]: Start difference. First operand has 163 places, 231 transitions, 2570 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:04:04,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 283 transitions, 3354 flow [2024-06-28 01:04:05,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 283 transitions, 3243 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 01:04:05,118 INFO L231 Difference]: Finished difference. Result has 166 places, 235 transitions, 2624 flow [2024-06-28 01:04:05,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2459, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2624, PETRI_PLACES=166, PETRI_TRANSITIONS=235} [2024-06-28 01:04:05,119 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 111 predicate places. [2024-06-28 01:04:05,119 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 235 transitions, 2624 flow [2024-06-28 01:04:05,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:05,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:05,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:05,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:04:05,119 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:05,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:05,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1297615038, now seen corresponding path program 4 times [2024-06-28 01:04:05,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:05,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524269625] [2024-06-28 01:04:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:05,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:06,266 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 01:04:06,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:06,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524269625] [2024-06-28 01:04:06,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524269625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:06,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:06,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:04:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814467796] [2024-06-28 01:04:06,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:06,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:04:06,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:06,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:04:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:04:06,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:06,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 235 transitions, 2624 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:06,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:06,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:06,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:08,606 INFO L124 PetriNetUnfolderBase]: 8622/13346 cut-off events. [2024-06-28 01:04:08,606 INFO L125 PetriNetUnfolderBase]: For 273800/273805 co-relation queries the response was YES. [2024-06-28 01:04:08,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74068 conditions, 13346 events. 8622/13346 cut-off events. For 273800/273805 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 83533 event pairs, 2666 based on Foata normal form. 10/12971 useless extension candidates. Maximal degree in co-relation 73993. Up to 11598 conditions per place. [2024-06-28 01:04:08,775 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 227 selfloop transitions, 52 changer transitions 0/286 dead transitions. [2024-06-28 01:04:08,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 286 transitions, 3420 flow [2024-06-28 01:04:08,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:04:08,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:04:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:04:08,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 01:04:08,777 INFO L175 Difference]: Start difference. First operand has 166 places, 235 transitions, 2624 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:04:08,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 286 transitions, 3420 flow [2024-06-28 01:04:09,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 286 transitions, 3291 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 01:04:09,194 INFO L231 Difference]: Finished difference. Result has 168 places, 238 transitions, 2697 flow [2024-06-28 01:04:09,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2495, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2697, PETRI_PLACES=168, PETRI_TRANSITIONS=238} [2024-06-28 01:04:09,194 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 113 predicate places. [2024-06-28 01:04:09,195 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 238 transitions, 2697 flow [2024-06-28 01:04:09,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:09,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:09,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:09,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:04:09,195 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:09,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:09,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1294811322, now seen corresponding path program 5 times [2024-06-28 01:04:09,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:09,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352076972] [2024-06-28 01:04:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:09,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:10,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:10,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352076972] [2024-06-28 01:04:10,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352076972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:10,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:10,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:04:10,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541535542] [2024-06-28 01:04:10,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:10,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:04:10,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:04:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:04:10,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:10,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 238 transitions, 2697 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:10,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:10,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:10,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:12,871 INFO L124 PetriNetUnfolderBase]: 8726/13490 cut-off events. [2024-06-28 01:04:12,871 INFO L125 PetriNetUnfolderBase]: For 294065/294070 co-relation queries the response was YES. [2024-06-28 01:04:12,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75895 conditions, 13490 events. 8726/13490 cut-off events. For 294065/294070 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 84237 event pairs, 2414 based on Foata normal form. 10/13115 useless extension candidates. Maximal degree in co-relation 75819. Up to 10672 conditions per place. [2024-06-28 01:04:13,012 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 207 selfloop transitions, 89 changer transitions 0/303 dead transitions. [2024-06-28 01:04:13,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 303 transitions, 3761 flow [2024-06-28 01:04:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:04:13,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:04:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:04:13,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-28 01:04:13,013 INFO L175 Difference]: Start difference. First operand has 168 places, 238 transitions, 2697 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:04:13,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 303 transitions, 3761 flow [2024-06-28 01:04:13,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 303 transitions, 3583 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 01:04:13,455 INFO L231 Difference]: Finished difference. Result has 171 places, 242 transitions, 2810 flow [2024-06-28 01:04:13,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2810, PETRI_PLACES=171, PETRI_TRANSITIONS=242} [2024-06-28 01:04:13,456 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 116 predicate places. [2024-06-28 01:04:13,456 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 242 transitions, 2810 flow [2024-06-28 01:04:13,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:13,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:13,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:13,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:04:13,456 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:13,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1294804812, now seen corresponding path program 6 times [2024-06-28 01:04:13,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:13,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598269474] [2024-06-28 01:04:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:14,566 INFO 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 01:04:14,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:14,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598269474] [2024-06-28 01:04:14,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598269474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:14,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:14,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:04:14,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348754681] [2024-06-28 01:04:14,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:14,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:04:14,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:14,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:04:14,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:04:14,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:14,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 242 transitions, 2810 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:14,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:14,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:14,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:16,905 INFO L124 PetriNetUnfolderBase]: 8726/13499 cut-off events. [2024-06-28 01:04:16,905 INFO L125 PetriNetUnfolderBase]: For 306154/306159 co-relation queries the response was YES. [2024-06-28 01:04:16,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76905 conditions, 13499 events. 8726/13499 cut-off events. For 306154/306159 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 84371 event pairs, 2410 based on Foata normal form. 10/13121 useless extension candidates. Maximal degree in co-relation 76827. Up to 10676 conditions per place. [2024-06-28 01:04:17,060 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 208 selfloop transitions, 90 changer transitions 0/305 dead transitions. [2024-06-28 01:04:17,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 305 transitions, 3755 flow [2024-06-28 01:04:17,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:04:17,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:04:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:04:17,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-28 01:04:17,062 INFO L175 Difference]: Start difference. First operand has 171 places, 242 transitions, 2810 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:04:17,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 305 transitions, 3755 flow [2024-06-28 01:04:17,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 305 transitions, 3439 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 01:04:17,606 INFO L231 Difference]: Finished difference. Result has 172 places, 245 transitions, 2754 flow [2024-06-28 01:04:17,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2754, PETRI_PLACES=172, PETRI_TRANSITIONS=245} [2024-06-28 01:04:17,606 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 117 predicate places. [2024-06-28 01:04:17,606 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 245 transitions, 2754 flow [2024-06-28 01:04:17,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:17,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:17,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:17,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:04:17,607 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:17,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1288309134, now seen corresponding path program 2 times [2024-06-28 01:04:17,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:17,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981293504] [2024-06-28 01:04:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:17,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:18,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:18,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981293504] [2024-06-28 01:04:18,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981293504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:18,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:18,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:04:18,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184799529] [2024-06-28 01:04:18,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:18,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:04:18,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:18,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:04:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:04:18,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:18,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 245 transitions, 2754 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:18,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:18,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:18,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:21,111 INFO L124 PetriNetUnfolderBase]: 8810/13619 cut-off events. [2024-06-28 01:04:21,111 INFO L125 PetriNetUnfolderBase]: For 311368/311373 co-relation queries the response was YES. [2024-06-28 01:04:21,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77225 conditions, 13619 events. 8810/13619 cut-off events. For 311368/311373 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 85273 event pairs, 2988 based on Foata normal form. 10/13241 useless extension candidates. Maximal degree in co-relation 77147. Up to 11658 conditions per place. [2024-06-28 01:04:21,284 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 232 selfloop transitions, 63 changer transitions 0/302 dead transitions. [2024-06-28 01:04:21,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 302 transitions, 3589 flow [2024-06-28 01:04:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:04:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:04:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:04:21,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49489795918367346 [2024-06-28 01:04:21,285 INFO L175 Difference]: Start difference. First operand has 172 places, 245 transitions, 2754 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:04:21,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 302 transitions, 3589 flow [2024-06-28 01:04:21,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 302 transitions, 3412 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:04:21,834 INFO L231 Difference]: Finished difference. Result has 175 places, 248 transitions, 2792 flow [2024-06-28 01:04:21,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2792, PETRI_PLACES=175, PETRI_TRANSITIONS=248} [2024-06-28 01:04:21,835 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 120 predicate places. [2024-06-28 01:04:21,835 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 248 transitions, 2792 flow [2024-06-28 01:04:21,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:21,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:21,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:21,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:04:21,835 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:21,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:21,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1058332224, now seen corresponding path program 3 times [2024-06-28 01:04:21,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:21,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930608034] [2024-06-28 01:04:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:21,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:22,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:22,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930608034] [2024-06-28 01:04:22,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930608034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:22,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:22,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:04:22,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504655067] [2024-06-28 01:04:22,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:22,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:04:22,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:22,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:04:22,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:04:23,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:23,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 248 transitions, 2792 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:23,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:23,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:23,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:25,304 INFO L124 PetriNetUnfolderBase]: 8894/13753 cut-off events. [2024-06-28 01:04:25,305 INFO L125 PetriNetUnfolderBase]: For 332171/332171 co-relation queries the response was YES. [2024-06-28 01:04:25,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78804 conditions, 13753 events. 8894/13753 cut-off events. For 332171/332171 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 86376 event pairs, 3380 based on Foata normal form. 8/13369 useless extension candidates. Maximal degree in co-relation 78725. Up to 12305 conditions per place. [2024-06-28 01:04:25,440 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 263 selfloop transitions, 29 changer transitions 0/299 dead transitions. [2024-06-28 01:04:25,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 299 transitions, 3602 flow [2024-06-28 01:04:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:04:25,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:04:25,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:04:25,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719387755102041 [2024-06-28 01:04:25,442 INFO L175 Difference]: Start difference. First operand has 175 places, 248 transitions, 2792 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:04:25,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 299 transitions, 3602 flow [2024-06-28 01:04:26,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 299 transitions, 3413 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:04:26,007 INFO L231 Difference]: Finished difference. Result has 177 places, 251 transitions, 2755 flow [2024-06-28 01:04:26,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2755, PETRI_PLACES=177, PETRI_TRANSITIONS=251} [2024-06-28 01:04:26,008 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 122 predicate places. [2024-06-28 01:04:26,008 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 251 transitions, 2755 flow [2024-06-28 01:04:26,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:26,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:26,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:26,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:04:26,009 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:26,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:26,009 INFO L85 PathProgramCache]: Analyzing trace with hash -331767394, now seen corresponding path program 4 times [2024-06-28 01:04:26,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:26,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723314636] [2024-06-28 01:04:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:26,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:27,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:27,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723314636] [2024-06-28 01:04:27,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723314636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:27,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:27,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:04:27,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868337844] [2024-06-28 01:04:27,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:27,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:04:27,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:04:27,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:04:27,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:27,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 251 transitions, 2755 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:27,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:27,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:27,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:29,788 INFO L124 PetriNetUnfolderBase]: 8902/13690 cut-off events. [2024-06-28 01:04:29,788 INFO L125 PetriNetUnfolderBase]: For 344694/344694 co-relation queries the response was YES. [2024-06-28 01:04:29,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78955 conditions, 13690 events. 8902/13690 cut-off events. For 344694/344694 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 85409 event pairs, 3295 based on Foata normal form. 8/13331 useless extension candidates. Maximal degree in co-relation 78875. Up to 12189 conditions per place. [2024-06-28 01:04:29,929 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 273 selfloop transitions, 35 changer transitions 0/315 dead transitions. [2024-06-28 01:04:29,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 315 transitions, 3693 flow [2024-06-28 01:04:29,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:04:29,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:04:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 01:04:29,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47392290249433106 [2024-06-28 01:04:29,931 INFO L175 Difference]: Start difference. First operand has 177 places, 251 transitions, 2755 flow. Second operand 9 states and 209 transitions. [2024-06-28 01:04:29,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 315 transitions, 3693 flow [2024-06-28 01:04:30,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 315 transitions, 3565 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 01:04:30,465 INFO L231 Difference]: Finished difference. Result has 181 places, 257 transitions, 2867 flow [2024-06-28 01:04:30,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2627, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2867, PETRI_PLACES=181, PETRI_TRANSITIONS=257} [2024-06-28 01:04:30,466 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 126 predicate places. [2024-06-28 01:04:30,466 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 257 transitions, 2867 flow [2024-06-28 01:04:30,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:30,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:30,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:30,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:04:30,467 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:30,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:30,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1837019354, now seen corresponding path program 2 times [2024-06-28 01:04:30,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:30,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232671755] [2024-06-28 01:04:30,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:30,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:31,159 INFO 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 01:04:31,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:31,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232671755] [2024-06-28 01:04:31,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232671755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:31,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:31,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:04:31,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959386762] [2024-06-28 01:04:31,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:31,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:04:31,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:31,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:04:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:04:31,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:04:31,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 257 transitions, 2867 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:31,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:31,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:04:31,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:33,105 INFO L124 PetriNetUnfolderBase]: 8463/13247 cut-off events. [2024-06-28 01:04:33,106 INFO L125 PetriNetUnfolderBase]: For 356343/356401 co-relation queries the response was YES. [2024-06-28 01:04:33,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76603 conditions, 13247 events. 8463/13247 cut-off events. For 356343/356401 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 85295 event pairs, 2991 based on Foata normal form. 23/12846 useless extension candidates. Maximal degree in co-relation 76521. Up to 11660 conditions per place. [2024-06-28 01:04:33,246 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 223 selfloop transitions, 49 changer transitions 0/298 dead transitions. [2024-06-28 01:04:33,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 298 transitions, 3679 flow [2024-06-28 01:04:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:04:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:04:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:04:33,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-28 01:04:33,248 INFO L175 Difference]: Start difference. First operand has 181 places, 257 transitions, 2867 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:04:33,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 298 transitions, 3679 flow [2024-06-28 01:04:33,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 298 transitions, 3520 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-28 01:04:33,819 INFO L231 Difference]: Finished difference. Result has 185 places, 269 transitions, 3035 flow [2024-06-28 01:04:33,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3035, PETRI_PLACES=185, PETRI_TRANSITIONS=269} [2024-06-28 01:04:33,820 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 130 predicate places. [2024-06-28 01:04:33,820 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 269 transitions, 3035 flow [2024-06-28 01:04:33,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:33,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:33,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:33,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:04:33,820 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:33,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:33,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1632480940, now seen corresponding path program 1 times [2024-06-28 01:04:33,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:33,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277576143] [2024-06-28 01:04:33,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:33,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:34,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:34,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:34,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277576143] [2024-06-28 01:04:34,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277576143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:34,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:34,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:04:34,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439934666] [2024-06-28 01:04:34,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:34,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:04:34,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:04:34,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:04:34,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:34,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 269 transitions, 3035 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:04:34,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:34,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:34,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:36,685 INFO L124 PetriNetUnfolderBase]: 8947/13729 cut-off events. [2024-06-28 01:04:36,685 INFO L125 PetriNetUnfolderBase]: For 366152/366152 co-relation queries the response was YES. [2024-06-28 01:04:36,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80581 conditions, 13729 events. 8947/13729 cut-off events. For 366152/366152 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 85409 event pairs, 3432 based on Foata normal form. 3/13372 useless extension candidates. Maximal degree in co-relation 80495. Up to 12519 conditions per place. [2024-06-28 01:04:36,840 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 273 selfloop transitions, 23 changer transitions 0/303 dead transitions. [2024-06-28 01:04:36,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 303 transitions, 3896 flow [2024-06-28 01:04:36,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:04:36,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:04:36,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 01:04:36,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 01:04:36,841 INFO L175 Difference]: Start difference. First operand has 185 places, 269 transitions, 3035 flow. Second operand 6 states and 133 transitions. [2024-06-28 01:04:36,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 303 transitions, 3896 flow [2024-06-28 01:04:37,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 303 transitions, 3775 flow, removed 48 selfloop flow, removed 2 redundant places. [2024-06-28 01:04:37,494 INFO L231 Difference]: Finished difference. Result has 190 places, 279 transitions, 3176 flow [2024-06-28 01:04:37,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3176, PETRI_PLACES=190, PETRI_TRANSITIONS=279} [2024-06-28 01:04:37,495 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 135 predicate places. [2024-06-28 01:04:37,495 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 279 transitions, 3176 flow [2024-06-28 01:04:37,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:04:37,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:37,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:37,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:04:37,496 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:37,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1967305548, now seen corresponding path program 1 times [2024-06-28 01:04:37,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:37,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853854502] [2024-06-28 01:04:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:37,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:38,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:38,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853854502] [2024-06-28 01:04:38,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853854502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:38,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:38,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:04:38,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710040810] [2024-06-28 01:04:38,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:38,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:04:38,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:38,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:04:38,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:04:38,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:38,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 279 transitions, 3176 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:04:38,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:38,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:38,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:40,474 INFO L124 PetriNetUnfolderBase]: 9123/13970 cut-off events. [2024-06-28 01:04:40,474 INFO L125 PetriNetUnfolderBase]: For 398349/398354 co-relation queries the response was YES. [2024-06-28 01:04:40,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84476 conditions, 13970 events. 9123/13970 cut-off events. For 398349/398354 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 86748 event pairs, 3296 based on Foata normal form. 8/13617 useless extension candidates. Maximal degree in co-relation 84387. Up to 12425 conditions per place. [2024-06-28 01:04:40,617 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 279 selfloop transitions, 43 changer transitions 0/329 dead transitions. [2024-06-28 01:04:40,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 329 transitions, 4380 flow [2024-06-28 01:04:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:04:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:04:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:04:40,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46355685131195334 [2024-06-28 01:04:40,619 INFO L175 Difference]: Start difference. First operand has 190 places, 279 transitions, 3176 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:04:40,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 329 transitions, 4380 flow [2024-06-28 01:04:41,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 329 transitions, 4218 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-28 01:04:41,267 INFO L231 Difference]: Finished difference. Result has 195 places, 292 transitions, 3466 flow [2024-06-28 01:04:41,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3466, PETRI_PLACES=195, PETRI_TRANSITIONS=292} [2024-06-28 01:04:41,268 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 140 predicate places. [2024-06-28 01:04:41,268 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 292 transitions, 3466 flow [2024-06-28 01:04:41,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:04:41,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:41,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:41,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:04:41,269 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:41,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:41,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1837234618, now seen corresponding path program 2 times [2024-06-28 01:04:41,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:41,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954832288] [2024-06-28 01:04:41,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:41,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:41,952 INFO 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 01:04:41,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:41,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954832288] [2024-06-28 01:04:41,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954832288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:41,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:41,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:04:41,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858646763] [2024-06-28 01:04:41,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:41,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:04:41,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:04:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:04:42,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:42,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 292 transitions, 3466 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:04:42,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:42,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:42,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:44,407 INFO L124 PetriNetUnfolderBase]: 9221/13976 cut-off events. [2024-06-28 01:04:44,407 INFO L125 PetriNetUnfolderBase]: For 428785/428792 co-relation queries the response was YES. [2024-06-28 01:04:44,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87770 conditions, 13976 events. 9221/13976 cut-off events. For 428785/428792 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 86298 event pairs, 3231 based on Foata normal form. 8/13667 useless extension candidates. Maximal degree in co-relation 87679. Up to 12401 conditions per place. [2024-06-28 01:04:44,548 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 288 selfloop transitions, 60 changer transitions 0/355 dead transitions. [2024-06-28 01:04:44,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 355 transitions, 4922 flow [2024-06-28 01:04:44,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:04:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:04:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:04:44,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-28 01:04:44,549 INFO L175 Difference]: Start difference. First operand has 195 places, 292 transitions, 3466 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:04:44,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 355 transitions, 4922 flow [2024-06-28 01:04:45,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 355 transitions, 4738 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-06-28 01:04:45,141 INFO L231 Difference]: Finished difference. Result has 201 places, 316 transitions, 3899 flow [2024-06-28 01:04:45,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3282, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3899, PETRI_PLACES=201, PETRI_TRANSITIONS=316} [2024-06-28 01:04:45,142 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 146 predicate places. [2024-06-28 01:04:45,142 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 316 transitions, 3899 flow [2024-06-28 01:04:45,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:04:45,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:45,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:45,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:04:45,143 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:45,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:45,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1837242988, now seen corresponding path program 3 times [2024-06-28 01:04:45,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:45,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927402897] [2024-06-28 01:04:45,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:45,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:45,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:45,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927402897] [2024-06-28 01:04:45,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927402897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:45,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:45,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:04:45,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149241544] [2024-06-28 01:04:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:45,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:04:45,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:45,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:04:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:04:45,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:45,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 316 transitions, 3899 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:04:45,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:45,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:45,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:48,455 INFO L124 PetriNetUnfolderBase]: 9391/14241 cut-off events. [2024-06-28 01:04:48,456 INFO L125 PetriNetUnfolderBase]: For 463511/463513 co-relation queries the response was YES. [2024-06-28 01:04:48,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92046 conditions, 14241 events. 9391/14241 cut-off events. For 463511/463513 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 88091 event pairs, 3487 based on Foata normal form. 6/13917 useless extension candidates. Maximal degree in co-relation 91951. Up to 12961 conditions per place. [2024-06-28 01:04:48,612 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 317 selfloop transitions, 50 changer transitions 0/374 dead transitions. [2024-06-28 01:04:48,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 374 transitions, 5324 flow [2024-06-28 01:04:48,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:04:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:04:48,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 01:04:48,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461734693877551 [2024-06-28 01:04:48,613 INFO L175 Difference]: Start difference. First operand has 201 places, 316 transitions, 3899 flow. Second operand 8 states and 181 transitions. [2024-06-28 01:04:48,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 374 transitions, 5324 flow [2024-06-28 01:04:49,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 374 transitions, 4998 flow, removed 150 selfloop flow, removed 2 redundant places. [2024-06-28 01:04:49,362 INFO L231 Difference]: Finished difference. Result has 208 places, 334 transitions, 4156 flow [2024-06-28 01:04:49,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3691, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4156, PETRI_PLACES=208, PETRI_TRANSITIONS=334} [2024-06-28 01:04:49,363 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 153 predicate places. [2024-06-28 01:04:49,363 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 334 transitions, 4156 flow [2024-06-28 01:04:49,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:04:49,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:49,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:49,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:04:49,364 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:49,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:49,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1837542200, now seen corresponding path program 1 times [2024-06-28 01:04:49,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:49,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545121901] [2024-06-28 01:04:49,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:49,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:50,397 INFO 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 01:04:50,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:50,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545121901] [2024-06-28 01:04:50,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545121901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:50,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:50,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:04:50,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121332977] [2024-06-28 01:04:50,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:50,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:04:50,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:04:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:04:50,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:04:50,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 334 transitions, 4156 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:50,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:50,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:04:50,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:53,131 INFO L124 PetriNetUnfolderBase]: 9104/14250 cut-off events. [2024-06-28 01:04:53,132 INFO L125 PetriNetUnfolderBase]: For 487424/487498 co-relation queries the response was YES. [2024-06-28 01:04:53,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91576 conditions, 14250 events. 9104/14250 cut-off events. For 487424/487498 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 92231 event pairs, 3052 based on Foata normal form. 20/13785 useless extension candidates. Maximal degree in co-relation 91478. Up to 12128 conditions per place. [2024-06-28 01:04:53,296 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 265 selfloop transitions, 86 changer transitions 0/382 dead transitions. [2024-06-28 01:04:53,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 382 transitions, 5332 flow [2024-06-28 01:04:53,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:04:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:04:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:04:53,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:04:53,298 INFO L175 Difference]: Start difference. First operand has 208 places, 334 transitions, 4156 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:04:53,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 382 transitions, 5332 flow [2024-06-28 01:04:54,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 382 transitions, 5167 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-28 01:04:54,106 INFO L231 Difference]: Finished difference. Result has 213 places, 345 transitions, 4464 flow [2024-06-28 01:04:54,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3991, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4464, PETRI_PLACES=213, PETRI_TRANSITIONS=345} [2024-06-28 01:04:54,106 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 158 predicate places. [2024-06-28 01:04:54,107 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 345 transitions, 4464 flow [2024-06-28 01:04:54,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:54,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:54,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:54,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:04:54,107 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:54,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:54,108 INFO L85 PathProgramCache]: Analyzing trace with hash -600816738, now seen corresponding path program 1 times [2024-06-28 01:04:54,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:54,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945800779] [2024-06-28 01:04:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:54,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:54,857 INFO 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 01:04:54,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:54,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945800779] [2024-06-28 01:04:54,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945800779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:54,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:54,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:04:54,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481951921] [2024-06-28 01:04:54,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:54,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:04:54,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:54,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:04:54,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:04:54,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2024-06-28 01:04:54,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 345 transitions, 4464 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:54,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:54,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2024-06-28 01:04:54,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:57,549 INFO L124 PetriNetUnfolderBase]: 9093/13933 cut-off events. [2024-06-28 01:04:57,549 INFO L125 PetriNetUnfolderBase]: For 501502/501576 co-relation queries the response was YES. [2024-06-28 01:04:57,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93981 conditions, 13933 events. 9093/13933 cut-off events. For 501502/501576 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 87867 event pairs, 3089 based on Foata normal form. 14/13561 useless extension candidates. Maximal degree in co-relation 93879. Up to 12385 conditions per place. [2024-06-28 01:04:57,705 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 265 selfloop transitions, 72 changer transitions 0/368 dead transitions. [2024-06-28 01:04:57,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 368 transitions, 5214 flow [2024-06-28 01:04:57,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:04:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:04:57,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:04:57,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 01:04:57,707 INFO L175 Difference]: Start difference. First operand has 213 places, 345 transitions, 4464 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:04:57,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 368 transitions, 5214 flow [2024-06-28 01:04:58,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 368 transitions, 5070 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-28 01:04:58,615 INFO L231 Difference]: Finished difference. Result has 216 places, 345 transitions, 4492 flow [2024-06-28 01:04:58,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4320, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4492, PETRI_PLACES=216, PETRI_TRANSITIONS=345} [2024-06-28 01:04:58,616 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 161 predicate places. [2024-06-28 01:04:58,616 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 345 transitions, 4492 flow [2024-06-28 01:04:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:58,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:58,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:04:58,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:04:58,617 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:58,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1048335160, now seen corresponding path program 1 times [2024-06-28 01:04:58,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:58,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336010636] [2024-06-28 01:04:58,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:58,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:59,246 INFO 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 01:04:59,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:59,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336010636] [2024-06-28 01:04:59,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336010636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:59,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:59,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:04:59,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298725469] [2024-06-28 01:04:59,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:59,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:04:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:04:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:04:59,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:04:59,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 345 transitions, 4492 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:59,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:59,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:04:59,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:02,042 INFO L124 PetriNetUnfolderBase]: 9765/14743 cut-off events. [2024-06-28 01:05:02,042 INFO L125 PetriNetUnfolderBase]: For 520840/520844 co-relation queries the response was YES. [2024-06-28 01:05:02,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100041 conditions, 14743 events. 9765/14743 cut-off events. For 520840/520844 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 90373 event pairs, 3431 based on Foata normal form. 6/14425 useless extension candidates. Maximal degree in co-relation 99938. Up to 13379 conditions per place. [2024-06-28 01:05:02,194 INFO L140 encePairwiseOnDemand]: 33/49 looper letters, 345 selfloop transitions, 61 changer transitions 0/413 dead transitions. [2024-06-28 01:05:02,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 413 transitions, 5806 flow [2024-06-28 01:05:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:05:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:05:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 01:05:02,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46683673469387754 [2024-06-28 01:05:02,196 INFO L175 Difference]: Start difference. First operand has 216 places, 345 transitions, 4492 flow. Second operand 8 states and 183 transitions. [2024-06-28 01:05:02,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 413 transitions, 5806 flow [2024-06-28 01:05:03,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 413 transitions, 5610 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:05:03,069 INFO L231 Difference]: Finished difference. Result has 222 places, 374 transitions, 4870 flow [2024-06-28 01:05:03,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4301, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4870, PETRI_PLACES=222, PETRI_TRANSITIONS=374} [2024-06-28 01:05:03,070 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 167 predicate places. [2024-06-28 01:05:03,070 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 374 transitions, 4870 flow [2024-06-28 01:05:03,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:03,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:03,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:03,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:05:03,071 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:03,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1242280892, now seen corresponding path program 2 times [2024-06-28 01:05:03,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:03,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455814843] [2024-06-28 01:05:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:03,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:03,583 INFO 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 01:05:03,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:03,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455814843] [2024-06-28 01:05:03,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455814843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:03,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:03,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:05:03,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262210427] [2024-06-28 01:05:03,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:03,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:05:03,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:03,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:05:03,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:05:03,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:05:03,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 374 transitions, 4870 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:03,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:03,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:05:03,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:06,431 INFO L124 PetriNetUnfolderBase]: 9825/14826 cut-off events. [2024-06-28 01:05:06,431 INFO L125 PetriNetUnfolderBase]: For 526454/526458 co-relation queries the response was YES. [2024-06-28 01:05:06,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105880 conditions, 14826 events. 9825/14826 cut-off events. For 526454/526458 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 90977 event pairs, 3402 based on Foata normal form. 6/14507 useless extension candidates. Maximal degree in co-relation 105773. Up to 13414 conditions per place. [2024-06-28 01:05:06,651 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 344 selfloop transitions, 69 changer transitions 0/420 dead transitions. [2024-06-28 01:05:06,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 420 transitions, 6032 flow [2024-06-28 01:05:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:05:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:05:06,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:05:06,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-28 01:05:06,653 INFO L175 Difference]: Start difference. First operand has 222 places, 374 transitions, 4870 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:05:06,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 420 transitions, 6032 flow [2024-06-28 01:05:07,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 420 transitions, 5881 flow, removed 56 selfloop flow, removed 2 redundant places. [2024-06-28 01:05:07,802 INFO L231 Difference]: Finished difference. Result has 227 places, 384 transitions, 5035 flow [2024-06-28 01:05:07,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4735, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5035, PETRI_PLACES=227, PETRI_TRANSITIONS=384} [2024-06-28 01:05:07,802 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 172 predicate places. [2024-06-28 01:05:07,802 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 384 transitions, 5035 flow [2024-06-28 01:05:07,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:07,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:07,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:07,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:05:07,803 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:07,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:07,803 INFO L85 PathProgramCache]: Analyzing trace with hash 656321484, now seen corresponding path program 3 times [2024-06-28 01:05:07,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:07,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487909830] [2024-06-28 01:05:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:07,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:08,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:08,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487909830] [2024-06-28 01:05:08,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487909830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:08,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:08,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:05:08,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143509553] [2024-06-28 01:05:08,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:08,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:05:08,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:08,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:05:08,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:05:08,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:05:08,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 384 transitions, 5035 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:08,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:08,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:05:08,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:12,300 INFO L124 PetriNetUnfolderBase]: 9957/15003 cut-off events. [2024-06-28 01:05:12,300 INFO L125 PetriNetUnfolderBase]: For 547125/547129 co-relation queries the response was YES. [2024-06-28 01:05:12,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107926 conditions, 15003 events. 9957/15003 cut-off events. For 547125/547129 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 91923 event pairs, 3403 based on Foata normal form. 6/14684 useless extension candidates. Maximal degree in co-relation 107817. Up to 13460 conditions per place. [2024-06-28 01:05:12,464 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 342 selfloop transitions, 79 changer transitions 0/428 dead transitions. [2024-06-28 01:05:12,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 428 transitions, 6361 flow [2024-06-28 01:05:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:05:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:05:12,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:05:12,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47230320699708456 [2024-06-28 01:05:12,465 INFO L175 Difference]: Start difference. First operand has 227 places, 384 transitions, 5035 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:05:12,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 428 transitions, 6361 flow [2024-06-28 01:05:13,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 428 transitions, 6184 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 01:05:13,373 INFO L231 Difference]: Finished difference. Result has 232 places, 393 transitions, 5267 flow [2024-06-28 01:05:13,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=4868, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5267, PETRI_PLACES=232, PETRI_TRANSITIONS=393} [2024-06-28 01:05:13,374 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 177 predicate places. [2024-06-28 01:05:13,374 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 393 transitions, 5267 flow [2024-06-28 01:05:13,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:13,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:13,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:13,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:05:13,374 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:13,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:13,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1661714172, now seen corresponding path program 4 times [2024-06-28 01:05:13,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:13,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937107955] [2024-06-28 01:05:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:13,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:13,886 INFO 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 01:05:13,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:13,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937107955] [2024-06-28 01:05:13,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937107955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:13,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:13,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:05:13,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141397430] [2024-06-28 01:05:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:13,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:05:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:05:13,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:05:13,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:05:13,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 393 transitions, 5267 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:13,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:13,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:05:13,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:17,254 INFO L124 PetriNetUnfolderBase]: 9945/14979 cut-off events. [2024-06-28 01:05:17,254 INFO L125 PetriNetUnfolderBase]: For 542358/542360 co-relation queries the response was YES. [2024-06-28 01:05:17,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107710 conditions, 14979 events. 9945/14979 cut-off events. For 542358/542360 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 91724 event pairs, 3381 based on Foata normal form. 6/14660 useless extension candidates. Maximal degree in co-relation 107599. Up to 13605 conditions per place. [2024-06-28 01:05:17,428 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 368 selfloop transitions, 54 changer transitions 0/429 dead transitions. [2024-06-28 01:05:17,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 429 transitions, 6302 flow [2024-06-28 01:05:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:05:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:05:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 01:05:17,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606413994169096 [2024-06-28 01:05:17,429 INFO L175 Difference]: Start difference. First operand has 232 places, 393 transitions, 5267 flow. Second operand 7 states and 158 transitions. [2024-06-28 01:05:17,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 429 transitions, 6302 flow [2024-06-28 01:05:18,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 429 transitions, 6100 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-28 01:05:18,540 INFO L231 Difference]: Finished difference. Result has 236 places, 393 transitions, 5181 flow [2024-06-28 01:05:18,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5065, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5181, PETRI_PLACES=236, PETRI_TRANSITIONS=393} [2024-06-28 01:05:18,540 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 181 predicate places. [2024-06-28 01:05:18,540 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 393 transitions, 5181 flow [2024-06-28 01:05:18,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:18,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:18,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:18,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:05:18,541 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:18,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:18,541 INFO L85 PathProgramCache]: Analyzing trace with hash -928034820, now seen corresponding path program 5 times [2024-06-28 01:05:18,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:18,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73590575] [2024-06-28 01:05:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:18,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:19,172 INFO 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 01:05:19,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:19,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73590575] [2024-06-28 01:05:19,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73590575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:19,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:19,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:05:19,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089434401] [2024-06-28 01:05:19,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:19,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:05:19,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:19,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:05:19,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:05:19,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:05:19,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 393 transitions, 5181 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:19,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:19,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:05:19,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:22,582 INFO L124 PetriNetUnfolderBase]: 10048/15113 cut-off events. [2024-06-28 01:05:22,582 INFO L125 PetriNetUnfolderBase]: For 561214/561216 co-relation queries the response was YES. [2024-06-28 01:05:22,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108804 conditions, 15113 events. 10048/15113 cut-off events. For 561214/561216 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 92473 event pairs, 3371 based on Foata normal form. 10/14799 useless extension candidates. Maximal degree in co-relation 108691. Up to 13291 conditions per place. [2024-06-28 01:05:22,781 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 358 selfloop transitions, 75 changer transitions 0/440 dead transitions. [2024-06-28 01:05:22,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 440 transitions, 6614 flow [2024-06-28 01:05:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:05:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:05:22,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:05:22,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46647230320699706 [2024-06-28 01:05:22,782 INFO L175 Difference]: Start difference. First operand has 236 places, 393 transitions, 5181 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:05:22,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 440 transitions, 6614 flow [2024-06-28 01:05:23,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 440 transitions, 6507 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:05:23,837 INFO L231 Difference]: Finished difference. Result has 240 places, 404 transitions, 5558 flow [2024-06-28 01:05:23,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5074, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5558, PETRI_PLACES=240, PETRI_TRANSITIONS=404} [2024-06-28 01:05:23,838 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 185 predicate places. [2024-06-28 01:05:23,838 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 404 transitions, 5558 flow [2024-06-28 01:05:23,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:23,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:23,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:23,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:05:23,838 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:23,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:23,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1205187644, now seen corresponding path program 6 times [2024-06-28 01:05:23,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:23,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272916003] [2024-06-28 01:05:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:23,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:24,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:24,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272916003] [2024-06-28 01:05:24,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272916003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:24,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:24,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:05:24,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363008819] [2024-06-28 01:05:24,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:24,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:05:24,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:24,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:05:24,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:05:24,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:05:24,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 404 transitions, 5558 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:24,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:24,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:05:24,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:28,047 INFO L124 PetriNetUnfolderBase]: 10282/15437 cut-off events. [2024-06-28 01:05:28,047 INFO L125 PetriNetUnfolderBase]: For 615360/615364 co-relation queries the response was YES. [2024-06-28 01:05:28,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114381 conditions, 15437 events. 10282/15437 cut-off events. For 615360/615364 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 94604 event pairs, 3372 based on Foata normal form. 10/15120 useless extension candidates. Maximal degree in co-relation 114266. Up to 12912 conditions per place. [2024-06-28 01:05:28,211 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 334 selfloop transitions, 136 changer transitions 0/477 dead transitions. [2024-06-28 01:05:28,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 477 transitions, 7676 flow [2024-06-28 01:05:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:05:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:05:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:05:28,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47230320699708456 [2024-06-28 01:05:28,213 INFO L175 Difference]: Start difference. First operand has 240 places, 404 transitions, 5558 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:05:28,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 477 transitions, 7676 flow [2024-06-28 01:05:29,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 477 transitions, 7402 flow, removed 87 selfloop flow, removed 4 redundant places. [2024-06-28 01:05:29,208 INFO L231 Difference]: Finished difference. Result has 245 places, 440 transitions, 6474 flow [2024-06-28 01:05:29,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=5284, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6474, PETRI_PLACES=245, PETRI_TRANSITIONS=440} [2024-06-28 01:05:29,209 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 190 predicate places. [2024-06-28 01:05:29,209 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 440 transitions, 6474 flow [2024-06-28 01:05:29,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:29,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:29,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:29,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:05:29,209 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:29,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1119683754, now seen corresponding path program 7 times [2024-06-28 01:05:29,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:29,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356927658] [2024-06-28 01:05:29,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:29,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:29,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356927658] [2024-06-28 01:05:29,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356927658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:29,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:29,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:05:29,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58312960] [2024-06-28 01:05:29,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:29,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:05:29,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:29,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:05:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:05:29,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2024-06-28 01:05:29,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 440 transitions, 6474 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:29,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:29,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2024-06-28 01:05:29,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:33,550 INFO L124 PetriNetUnfolderBase]: 10254/15396 cut-off events. [2024-06-28 01:05:33,550 INFO L125 PetriNetUnfolderBase]: For 639766/639770 co-relation queries the response was YES. [2024-06-28 01:05:33,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116472 conditions, 15396 events. 10254/15396 cut-off events. For 639766/639770 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 94264 event pairs, 3355 based on Foata normal form. 10/15080 useless extension candidates. Maximal degree in co-relation 116354. Up to 12897 conditions per place. [2024-06-28 01:05:33,723 INFO L140 encePairwiseOnDemand]: 38/49 looper letters, 338 selfloop transitions, 134 changer transitions 0/479 dead transitions. [2024-06-28 01:05:33,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 479 transitions, 7907 flow [2024-06-28 01:05:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:05:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:05:33,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:05:33,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47230320699708456 [2024-06-28 01:05:33,724 INFO L175 Difference]: Start difference. First operand has 245 places, 440 transitions, 6474 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:05:33,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 479 transitions, 7907 flow [2024-06-28 01:05:35,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 479 transitions, 7477 flow, removed 197 selfloop flow, removed 2 redundant places. [2024-06-28 01:05:35,131 INFO L231 Difference]: Finished difference. Result has 251 places, 445 transitions, 6491 flow [2024-06-28 01:05:35,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=6060, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6491, PETRI_PLACES=251, PETRI_TRANSITIONS=445} [2024-06-28 01:05:35,131 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 196 predicate places. [2024-06-28 01:05:35,131 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 445 transitions, 6491 flow [2024-06-28 01:05:35,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 01:05:35,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:35,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:35,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:05:35,132 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:35,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1129216874, now seen corresponding path program 1 times [2024-06-28 01:05:35,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:35,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486825579] [2024-06-28 01:05:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:35,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat