./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:53:16,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:53:16,947 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:53:16,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:53:16,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:53:16,971 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:53:16,972 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:53:16,973 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:53:16,973 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:53:16,975 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:53:16,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:53:16,976 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:53:16,978 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:53:16,978 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:53:16,978 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:53:16,978 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:53:16,979 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:53:16,979 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:53:16,979 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:53:16,979 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:53:16,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:53:16,980 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:53:16,980 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:53:16,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:53:16,980 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:53:16,981 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:53:16,981 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:53:16,981 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:53:16,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:53:16,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:53:16,983 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:53:16,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:53:16,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:53:16,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:53:16,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:53:16,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:53:16,984 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:53:16,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:53:16,984 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:53:16,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:53:16,984 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:53:16,985 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:53:16,985 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:53:16,985 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:53:17,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:53:17,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:53:17,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:53:17,269 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:53:17,270 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:53:17,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 01:53:17,411 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:53:17,411 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:53:17,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:53:18,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:53:18,716 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:53:18,717 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:53:18,748 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7f90bd29/c8fc1d78f2354a62b67ef7792497f956/FLAG567cc28a6 [2024-06-28 01:53:18,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7f90bd29/c8fc1d78f2354a62b67ef7792497f956 [2024-06-28 01:53:18,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:53:18,761 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:53:18,762 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:53:18,762 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:53:18,766 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:53:18,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:17" (1/2) ... [2024-06-28 01:53:18,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5765ae7e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:18, skipping insertion in model container [2024-06-28 01:53:18,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:17" (1/2) ... [2024-06-28 01:53:18,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4011ba7c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:53:18, skipping insertion in model container [2024-06-28 01:53:18,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:53:18" (2/2) ... [2024-06-28 01:53:18,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5765ae7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:18, skipping insertion in model container [2024-06-28 01:53:18,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:53:18" (2/2) ... [2024-06-28 01:53:18,770 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:53:18,847 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:53:18,848 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] (((((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 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 == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! 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_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:53:18,849 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$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$w_buff1 == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$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$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:53:18,849 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 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 == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! 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_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:53:18,849 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:53:18,849 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-06-28 01:53:18,887 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:53:19,038 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/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[986,999] [2024-06-28 01:53:19,250 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:53:19,270 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:53:19,304 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/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[986,999] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:53:19,401 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:53:19,439 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:53:19,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19 WrapperNode [2024-06-28 01:53:19,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:53:19,440 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:53:19,440 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:53:19,440 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:53:19,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,506 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2024-06-28 01:53:19,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:53:19,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:53:19,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:53:19,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:53:19,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,519 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,534 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 01:53:19,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:53:19,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:53:19,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:53:19,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:53:19,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (1/1) ... [2024-06-28 01:53:19,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:53:19,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:53:19,610 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 01:53:19,648 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 01:53:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:53:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:53:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:53:19,674 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:53:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:53:19,674 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:53:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:53:19,675 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:53:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:53:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:53:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:53:19,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:53:19,677 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 01:53:19,839 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:53:19,843 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:53:20,188 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:53:20,188 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:53:20,381 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:53:20,382 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:53:20,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:53:20 BoogieIcfgContainer [2024-06-28 01:53:20,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:53:20,386 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:53:20,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:53:20,388 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:53:20,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:53:17" (1/4) ... [2024-06-28 01:53:20,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5122414f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:53:20, skipping insertion in model container [2024-06-28 01:53:20,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:53:18" (2/4) ... [2024-06-28 01:53:20,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5122414f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:53:20, skipping insertion in model container [2024-06-28 01:53:20,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:53:19" (3/4) ... [2024-06-28 01:53:20,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5122414f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:53:20, skipping insertion in model container [2024-06-28 01:53:20,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:53:20" (4/4) ... [2024-06-28 01:53:20,392 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 01:53:20,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:53:20,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:53:20,406 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:53:20,447 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:53:20,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:53:20,510 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:53:20,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:53:20,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-28 01:53:20,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:53:20,517 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-28 01:53:20,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:53:20,531 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;@55e9362c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:53:20,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:53:20,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:53:20,535 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:53:20,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:53:20,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:20,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:53:20,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:20,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:20,541 INFO L85 PathProgramCache]: Analyzing trace with hash 424721520, now seen corresponding path program 1 times [2024-06-28 01:53:20,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:20,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757717237] [2024-06-28 01:53:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:20,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:21,459 INFO 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 01:53:21,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:21,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757717237] [2024-06-28 01:53:21,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757717237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:21,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:21,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:53:21,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104925072] [2024-06-28 01:53:21,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:21,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:53:21,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:21,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:53:21,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:53:21,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:53:21,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 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 01:53:21,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:21,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:53:21,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:22,269 INFO L124 PetriNetUnfolderBase]: 4210/6074 cut-off events. [2024-06-28 01:53:22,270 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 01:53:22,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12218 conditions, 6074 events. 4210/6074 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 33431 event pairs, 1574 based on Foata normal form. 214/5979 useless extension candidates. Maximal degree in co-relation 12206. Up to 6001 conditions per place. [2024-06-28 01:53:22,330 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 46 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-28 01:53:22,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 239 flow [2024-06-28 01:53:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:53:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:53:22,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 01:53:22,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6884057971014492 [2024-06-28 01:53:22,341 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 95 transitions. [2024-06-28 01:53:22,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 239 flow [2024-06-28 01:53:22,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:22,346 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-28 01:53:22,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 01:53:22,350 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:53:22,350 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-28 01:53:22,350 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 01:53:22,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:22,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:53:22,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:53:22,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:22,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:22,351 INFO L85 PathProgramCache]: Analyzing trace with hash 424721625, now seen corresponding path program 1 times [2024-06-28 01:53:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:22,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121634282] [2024-06-28 01:53:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:22,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:22,389 INFO 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 01:53:22,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:22,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121634282] [2024-06-28 01:53:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121634282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:22,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:22,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:53:22,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671219230] [2024-06-28 01:53:22,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:22,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:53:22,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:22,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:53:22,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:53:22,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 46 [2024-06-28 01:53:22,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:22,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:22,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 46 [2024-06-28 01:53:22,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:22,680 INFO L124 PetriNetUnfolderBase]: 1415/2543 cut-off events. [2024-06-28 01:53:22,681 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-06-28 01:53:22,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4975 conditions, 2543 events. 1415/2543 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 16860 event pairs, 656 based on Foata normal form. 0/2374 useless extension candidates. Maximal degree in co-relation 4963. Up to 1770 conditions per place. [2024-06-28 01:53:22,693 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-06-28 01:53:22,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 242 flow [2024-06-28 01:53:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:53:22,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:53:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-28 01:53:22,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2024-06-28 01:53:22,695 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 3 states and 105 transitions. [2024-06-28 01:53:22,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 242 flow [2024-06-28 01:53:22,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:22,697 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 120 flow [2024-06-28 01:53:22,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-28 01:53:22,698 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:53:22,698 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 120 flow [2024-06-28 01:53:22,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:22,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:22,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:22,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:53:22,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:22,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:22,699 INFO L85 PathProgramCache]: Analyzing trace with hash 135598152, now seen corresponding path program 1 times [2024-06-28 01:53:22,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:22,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391518328] [2024-06-28 01:53:22,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:22,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:23,179 INFO 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 01:53:23,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:23,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391518328] [2024-06-28 01:53:23,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391518328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:23,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:23,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:53:23,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685336812] [2024-06-28 01:53:23,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:23,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:53:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:53:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:53:23,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:53:23,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 120 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 01:53:23,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:23,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:53:23,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:23,802 INFO L124 PetriNetUnfolderBase]: 3639/5799 cut-off events. [2024-06-28 01:53:23,802 INFO L125 PetriNetUnfolderBase]: For 1245/1249 co-relation queries the response was YES. [2024-06-28 01:53:23,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12418 conditions, 5799 events. 3639/5799 cut-off events. For 1245/1249 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 34829 event pairs, 2527 based on Foata normal form. 8/5620 useless extension candidates. Maximal degree in co-relation 12405. Up to 5171 conditions per place. [2024-06-28 01:53:23,830 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 54 selfloop transitions, 8 changer transitions 2/74 dead transitions. [2024-06-28 01:53:23,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 74 transitions, 326 flow [2024-06-28 01:53:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:53:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:53:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-06-28 01:53:23,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-06-28 01:53:23,832 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 120 flow. Second operand 4 states and 116 transitions. [2024-06-28 01:53:23,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 74 transitions, 326 flow [2024-06-28 01:53:23,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 74 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:53:23,834 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 179 flow [2024-06-28 01:53:23,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-28 01:53:23,835 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-28 01:53:23,835 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 179 flow [2024-06-28 01:53:23,835 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 01:53:23,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:23,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:23,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:53:23,836 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:23,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:23,836 INFO L85 PathProgramCache]: Analyzing trace with hash -91423741, now seen corresponding path program 1 times [2024-06-28 01:53:23,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:23,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088563182] [2024-06-28 01:53:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:23,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:24,361 INFO 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 01:53:24,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:24,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088563182] [2024-06-28 01:53:24,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088563182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:24,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:24,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:53:24,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391619789] [2024-06-28 01:53:24,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:24,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:53:24,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:24,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:53:24,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:53:24,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:24,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:24,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:24,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:24,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:25,107 INFO L124 PetriNetUnfolderBase]: 3956/6353 cut-off events. [2024-06-28 01:53:25,107 INFO L125 PetriNetUnfolderBase]: For 2522/2522 co-relation queries the response was YES. [2024-06-28 01:53:25,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14959 conditions, 6353 events. 3956/6353 cut-off events. For 2522/2522 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 39221 event pairs, 1973 based on Foata normal form. 6/6134 useless extension candidates. Maximal degree in co-relation 14944. Up to 5545 conditions per place. [2024-06-28 01:53:25,140 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 76 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-06-28 01:53:25,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 96 transitions, 489 flow [2024-06-28 01:53:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:53:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:53:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-06-28 01:53:25,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-06-28 01:53:25,142 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 179 flow. Second operand 5 states and 140 transitions. [2024-06-28 01:53:25,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 96 transitions, 489 flow [2024-06-28 01:53:25,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 472 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:25,146 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 263 flow [2024-06-28 01:53:25,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=263, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2024-06-28 01:53:25,146 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-06-28 01:53:25,147 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 263 flow [2024-06-28 01:53:25,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:25,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:25,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:25,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:53:25,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:25,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1377715309, now seen corresponding path program 1 times [2024-06-28 01:53:25,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:25,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441611598] [2024-06-28 01:53:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:25,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:26,042 INFO 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 01:53:26,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:26,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441611598] [2024-06-28 01:53:26,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441611598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:26,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:26,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:53:26,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757748515] [2024-06-28 01:53:26,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:26,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:53:26,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:26,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:53:26,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:53:26,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:26,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:26,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:26,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:26,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:26,800 INFO L124 PetriNetUnfolderBase]: 3950/6356 cut-off events. [2024-06-28 01:53:26,800 INFO L125 PetriNetUnfolderBase]: For 4393/4393 co-relation queries the response was YES. [2024-06-28 01:53:26,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16123 conditions, 6356 events. 3950/6356 cut-off events. For 4393/4393 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 38597 event pairs, 2221 based on Foata normal form. 3/6130 useless extension candidates. Maximal degree in co-relation 16104. Up to 5603 conditions per place. [2024-06-28 01:53:26,831 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 82 selfloop transitions, 24 changer transitions 0/115 dead transitions. [2024-06-28 01:53:26,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 115 transitions, 646 flow [2024-06-28 01:53:26,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 01:53:26,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.572463768115942 [2024-06-28 01:53:26,833 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 263 flow. Second operand 6 states and 158 transitions. [2024-06-28 01:53:26,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 115 transitions, 646 flow [2024-06-28 01:53:26,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 115 transitions, 642 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:53:26,837 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 444 flow [2024-06-28 01:53:26,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2024-06-28 01:53:26,838 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-06-28 01:53:26,838 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 444 flow [2024-06-28 01:53:26,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:26,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:26,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:26,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:53:26,839 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:26,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:26,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1958841182, now seen corresponding path program 1 times [2024-06-28 01:53:26,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:26,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425643835] [2024-06-28 01:53:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:26,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:27,838 INFO 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 01:53:27,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:27,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425643835] [2024-06-28 01:53:27,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425643835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:27,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:27,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:27,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582604197] [2024-06-28 01:53:27,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:27,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:27,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:27,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:27,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:27,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:27,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 444 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 01:53:27,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:27,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:27,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:28,795 INFO L124 PetriNetUnfolderBase]: 4291/6856 cut-off events. [2024-06-28 01:53:28,796 INFO L125 PetriNetUnfolderBase]: For 8494/8494 co-relation queries the response was YES. [2024-06-28 01:53:28,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19699 conditions, 6856 events. 4291/6856 cut-off events. For 8494/8494 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 42175 event pairs, 1465 based on Foata normal form. 26/6650 useless extension candidates. Maximal degree in co-relation 19674. Up to 5587 conditions per place. [2024-06-28 01:53:28,829 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 122 selfloop transitions, 38 changer transitions 0/169 dead transitions. [2024-06-28 01:53:28,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 169 transitions, 1092 flow [2024-06-28 01:53:28,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-28 01:53:28,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6273291925465838 [2024-06-28 01:53:28,831 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 444 flow. Second operand 7 states and 202 transitions. [2024-06-28 01:53:28,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 169 transitions, 1092 flow [2024-06-28 01:53:28,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 169 transitions, 1088 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:53:28,838 INFO L231 Difference]: Finished difference. Result has 79 places, 104 transitions, 743 flow [2024-06-28 01:53:28,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=743, PETRI_PLACES=79, PETRI_TRANSITIONS=104} [2024-06-28 01:53:28,839 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-06-28 01:53:28,839 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 104 transitions, 743 flow [2024-06-28 01:53:28,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 01:53:28,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:28,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:28,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:53:28,840 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:28,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:28,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1334352410, now seen corresponding path program 1 times [2024-06-28 01:53:28,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:28,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984254402] [2024-06-28 01:53:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:28,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:29,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:29,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984254402] [2024-06-28 01:53:29,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984254402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:29,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:29,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:53:29,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862878731] [2024-06-28 01:53:29,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:53:29,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:29,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:53:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:53:29,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:29,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 104 transitions, 743 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 01:53:29,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:29,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:29,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:30,548 INFO L124 PetriNetUnfolderBase]: 4896/7745 cut-off events. [2024-06-28 01:53:30,549 INFO L125 PetriNetUnfolderBase]: For 19569/19572 co-relation queries the response was YES. [2024-06-28 01:53:30,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27495 conditions, 7745 events. 4896/7745 cut-off events. For 19569/19572 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 47221 event pairs, 2082 based on Foata normal form. 6/7504 useless extension candidates. Maximal degree in co-relation 27462. Up to 6950 conditions per place. [2024-06-28 01:53:30,589 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 104 selfloop transitions, 18 changer transitions 0/129 dead transitions. [2024-06-28 01:53:30,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 129 transitions, 1089 flow [2024-06-28 01:53:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:53:30,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:53:30,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-28 01:53:30,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826086956521739 [2024-06-28 01:53:30,591 INFO L175 Difference]: Start difference. First operand has 79 places, 104 transitions, 743 flow. Second operand 5 states and 111 transitions. [2024-06-28 01:53:30,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 129 transitions, 1089 flow [2024-06-28 01:53:30,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 129 transitions, 1065 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-06-28 01:53:30,604 INFO L231 Difference]: Finished difference. Result has 85 places, 112 transitions, 848 flow [2024-06-28 01:53:30,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=848, PETRI_PLACES=85, PETRI_TRANSITIONS=112} [2024-06-28 01:53:30,605 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2024-06-28 01:53:30,605 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 112 transitions, 848 flow [2024-06-28 01:53:30,605 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 01:53:30,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:30,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:30,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:53:30,606 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:30,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:30,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1671450322, now seen corresponding path program 1 times [2024-06-28 01:53:30,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:30,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889735925] [2024-06-28 01:53:30,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:30,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:31,282 INFO 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 01:53:31,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:31,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889735925] [2024-06-28 01:53:31,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889735925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:31,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:31,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:31,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297464461] [2024-06-28 01:53:31,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:31,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:31,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:31,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:31,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:31,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:31,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 112 transitions, 848 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:31,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:31,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:31,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:32,306 INFO L124 PetriNetUnfolderBase]: 5059/8008 cut-off events. [2024-06-28 01:53:32,306 INFO L125 PetriNetUnfolderBase]: For 24057/24063 co-relation queries the response was YES. [2024-06-28 01:53:32,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29534 conditions, 8008 events. 5059/8008 cut-off events. For 24057/24063 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 49535 event pairs, 1831 based on Foata normal form. 9/7756 useless extension candidates. Maximal degree in co-relation 29496. Up to 6806 conditions per place. [2024-06-28 01:53:32,361 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 142 selfloop transitions, 26 changer transitions 0/175 dead transitions. [2024-06-28 01:53:32,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 175 transitions, 1488 flow [2024-06-28 01:53:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:32,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:53:32,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372670807453416 [2024-06-28 01:53:32,366 INFO L175 Difference]: Start difference. First operand has 85 places, 112 transitions, 848 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:53:32,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 175 transitions, 1488 flow [2024-06-28 01:53:32,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 175 transitions, 1464 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:32,389 INFO L231 Difference]: Finished difference. Result has 91 places, 118 transitions, 939 flow [2024-06-28 01:53:32,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=939, PETRI_PLACES=91, PETRI_TRANSITIONS=118} [2024-06-28 01:53:32,392 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 39 predicate places. [2024-06-28 01:53:32,392 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 118 transitions, 939 flow [2024-06-28 01:53:32,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:32,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:32,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:32,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:53:32,393 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:32,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:32,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2088511012, now seen corresponding path program 1 times [2024-06-28 01:53:32,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:32,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293371117] [2024-06-28 01:53:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:32,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:33,085 INFO 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 01:53:33,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:33,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293371117] [2024-06-28 01:53:33,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293371117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:33,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:33,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:33,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220412584] [2024-06-28 01:53:33,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:33,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:33,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:33,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:33,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:33,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:33,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 118 transitions, 939 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:33,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:33,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:33,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:34,151 INFO L124 PetriNetUnfolderBase]: 5125/8077 cut-off events. [2024-06-28 01:53:34,151 INFO L125 PetriNetUnfolderBase]: For 29252/29258 co-relation queries the response was YES. [2024-06-28 01:53:34,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31342 conditions, 8077 events. 5125/8077 cut-off events. For 29252/29258 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 49511 event pairs, 1786 based on Foata normal form. 5/7829 useless extension candidates. Maximal degree in co-relation 31301. Up to 7126 conditions per place. [2024-06-28 01:53:34,217 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 130 selfloop transitions, 37 changer transitions 0/174 dead transitions. [2024-06-28 01:53:34,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 174 transitions, 1553 flow [2024-06-28 01:53:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:34,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:34,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:53:34,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2024-06-28 01:53:34,219 INFO L175 Difference]: Start difference. First operand has 91 places, 118 transitions, 939 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:53:34,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 174 transitions, 1553 flow [2024-06-28 01:53:34,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 174 transitions, 1513 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:34,241 INFO L231 Difference]: Finished difference. Result has 96 places, 133 transitions, 1134 flow [2024-06-28 01:53:34,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1134, PETRI_PLACES=96, PETRI_TRANSITIONS=133} [2024-06-28 01:53:34,242 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2024-06-28 01:53:34,242 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 133 transitions, 1134 flow [2024-06-28 01:53:34,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:34,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:34,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:34,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:53:34,243 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:34,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1671570292, now seen corresponding path program 2 times [2024-06-28 01:53:34,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:34,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930140860] [2024-06-28 01:53:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:34,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:34,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:34,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:34,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930140860] [2024-06-28 01:53:34,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930140860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:34,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:34,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:34,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702831606] [2024-06-28 01:53:34,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:34,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:34,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:34,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:34,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:35,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:35,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 133 transitions, 1134 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:35,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:35,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:35,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:36,141 INFO L124 PetriNetUnfolderBase]: 5276/8310 cut-off events. [2024-06-28 01:53:36,142 INFO L125 PetriNetUnfolderBase]: For 36079/36085 co-relation queries the response was YES. [2024-06-28 01:53:36,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34002 conditions, 8310 events. 5276/8310 cut-off events. For 36079/36085 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51074 event pairs, 1871 based on Foata normal form. 9/8056 useless extension candidates. Maximal degree in co-relation 33958. Up to 7226 conditions per place. [2024-06-28 01:53:36,187 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 160 selfloop transitions, 26 changer transitions 0/193 dead transitions. [2024-06-28 01:53:36,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 193 transitions, 1833 flow [2024-06-28 01:53:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:53:36,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-28 01:53:36,189 INFO L175 Difference]: Start difference. First operand has 96 places, 133 transitions, 1134 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:53:36,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 193 transitions, 1833 flow [2024-06-28 01:53:36,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 193 transitions, 1713 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:36,227 INFO L231 Difference]: Finished difference. Result has 100 places, 139 transitions, 1166 flow [2024-06-28 01:53:36,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1166, PETRI_PLACES=100, PETRI_TRANSITIONS=139} [2024-06-28 01:53:36,229 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-06-28 01:53:36,229 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 139 transitions, 1166 flow [2024-06-28 01:53:36,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:36,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:36,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:36,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:53:36,229 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:36,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:36,230 INFO L85 PathProgramCache]: Analyzing trace with hash 883620346, now seen corresponding path program 2 times [2024-06-28 01:53:36,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:36,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965974157] [2024-06-28 01:53:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:36,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:36,930 INFO 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 01:53:36,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:36,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965974157] [2024-06-28 01:53:36,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965974157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:36,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:36,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:36,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541451240] [2024-06-28 01:53:36,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:36,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:36,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:36,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:36,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:36,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:36,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 139 transitions, 1166 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:36,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:36,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:36,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:38,087 INFO L124 PetriNetUnfolderBase]: 5318/8364 cut-off events. [2024-06-28 01:53:38,088 INFO L125 PetriNetUnfolderBase]: For 36906/36912 co-relation queries the response was YES. [2024-06-28 01:53:38,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34236 conditions, 8364 events. 5318/8364 cut-off events. For 36906/36912 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51303 event pairs, 1793 based on Foata normal form. 5/8108 useless extension candidates. Maximal degree in co-relation 34191. Up to 7367 conditions per place. [2024-06-28 01:53:38,156 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 129 selfloop transitions, 41 changer transitions 0/177 dead transitions. [2024-06-28 01:53:38,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 177 transitions, 1689 flow [2024-06-28 01:53:38,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:53:38,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-28 01:53:38,158 INFO L175 Difference]: Start difference. First operand has 100 places, 139 transitions, 1166 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:53:38,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 177 transitions, 1689 flow [2024-06-28 01:53:38,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 177 transitions, 1618 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:38,208 INFO L231 Difference]: Finished difference. Result has 103 places, 145 transitions, 1276 flow [2024-06-28 01:53:38,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1276, PETRI_PLACES=103, PETRI_TRANSITIONS=145} [2024-06-28 01:53:38,208 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 51 predicate places. [2024-06-28 01:53:38,208 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 145 transitions, 1276 flow [2024-06-28 01:53:38,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:38,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:38,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:38,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:53:38,209 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:38,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:38,210 INFO L85 PathProgramCache]: Analyzing trace with hash 883620160, now seen corresponding path program 3 times [2024-06-28 01:53:38,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:38,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123892366] [2024-06-28 01:53:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:38,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:38,884 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 01:53:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:38,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123892366] [2024-06-28 01:53:38,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123892366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:38,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:38,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:38,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468393042] [2024-06-28 01:53:38,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:38,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:38,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:38,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:38,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:38,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:38,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 145 transitions, 1276 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:38,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:38,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:38,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:40,186 INFO L124 PetriNetUnfolderBase]: 5304/8367 cut-off events. [2024-06-28 01:53:40,186 INFO L125 PetriNetUnfolderBase]: For 39883/39889 co-relation queries the response was YES. [2024-06-28 01:53:40,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34561 conditions, 8367 events. 5304/8367 cut-off events. For 39883/39889 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51550 event pairs, 1869 based on Foata normal form. 9/8107 useless extension candidates. Maximal degree in co-relation 34514. Up to 7259 conditions per place. [2024-06-28 01:53:40,252 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 156 selfloop transitions, 27 changer transitions 0/190 dead transitions. [2024-06-28 01:53:40,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 190 transitions, 1850 flow [2024-06-28 01:53:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 01:53:40,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-28 01:53:40,253 INFO L175 Difference]: Start difference. First operand has 103 places, 145 transitions, 1276 flow. Second operand 6 states and 146 transitions. [2024-06-28 01:53:40,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 190 transitions, 1850 flow [2024-06-28 01:53:40,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 190 transitions, 1760 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:40,313 INFO L231 Difference]: Finished difference. Result has 105 places, 145 transitions, 1260 flow [2024-06-28 01:53:40,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1260, PETRI_PLACES=105, PETRI_TRANSITIONS=145} [2024-06-28 01:53:40,314 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 53 predicate places. [2024-06-28 01:53:40,314 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 145 transitions, 1260 flow [2024-06-28 01:53:40,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:40,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:40,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:40,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:53:40,315 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:40,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:40,316 INFO L85 PathProgramCache]: Analyzing trace with hash 883886326, now seen corresponding path program 3 times [2024-06-28 01:53:40,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:40,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835959694] [2024-06-28 01:53:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:40,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:40,903 INFO 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 01:53:40,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835959694] [2024-06-28 01:53:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835959694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:40,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:40,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:53:40,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138876396] [2024-06-28 01:53:40,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:40,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:53:40,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:40,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:53:40,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:53:40,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:40,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 145 transitions, 1260 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:40,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:40,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:40,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:42,074 INFO L124 PetriNetUnfolderBase]: 5326/8374 cut-off events. [2024-06-28 01:53:42,075 INFO L125 PetriNetUnfolderBase]: For 40805/40811 co-relation queries the response was YES. [2024-06-28 01:53:42,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34738 conditions, 8374 events. 5326/8374 cut-off events. For 40805/40811 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51139 event pairs, 2035 based on Foata normal form. 8/8121 useless extension candidates. Maximal degree in co-relation 34691. Up to 7505 conditions per place. [2024-06-28 01:53:42,124 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 145 selfloop transitions, 27 changer transitions 0/179 dead transitions. [2024-06-28 01:53:42,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 179 transitions, 1743 flow [2024-06-28 01:53:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 01:53:42,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-28 01:53:42,126 INFO L175 Difference]: Start difference. First operand has 105 places, 145 transitions, 1260 flow. Second operand 6 states and 134 transitions. [2024-06-28 01:53:42,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 179 transitions, 1743 flow [2024-06-28 01:53:42,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 179 transitions, 1686 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:42,174 INFO L231 Difference]: Finished difference. Result has 108 places, 154 transitions, 1358 flow [2024-06-28 01:53:42,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1358, PETRI_PLACES=108, PETRI_TRANSITIONS=154} [2024-06-28 01:53:42,175 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 56 predicate places. [2024-06-28 01:53:42,175 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 154 transitions, 1358 flow [2024-06-28 01:53:42,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:42,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:42,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:42,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:53:42,176 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:42,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:42,176 INFO L85 PathProgramCache]: Analyzing trace with hash 883896215, now seen corresponding path program 1 times [2024-06-28 01:53:42,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:42,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72534687] [2024-06-28 01:53:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:42,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:42,999 INFO 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 01:53:42,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:42,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72534687] [2024-06-28 01:53:42,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72534687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:43,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:43,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:43,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291002077] [2024-06-28 01:53:43,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:43,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:43,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:43,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:43,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 154 transitions, 1358 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 01:53:43,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:43,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:43,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:44,306 INFO L124 PetriNetUnfolderBase]: 5318/8361 cut-off events. [2024-06-28 01:53:44,307 INFO L125 PetriNetUnfolderBase]: For 43236/43245 co-relation queries the response was YES. [2024-06-28 01:53:44,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35253 conditions, 8361 events. 5318/8361 cut-off events. For 43236/43245 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51050 event pairs, 1970 based on Foata normal form. 10/8110 useless extension candidates. Maximal degree in co-relation 35203. Up to 7493 conditions per place. [2024-06-28 01:53:44,357 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 151 selfloop transitions, 24 changer transitions 0/182 dead transitions. [2024-06-28 01:53:44,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 182 transitions, 1808 flow [2024-06-28 01:53:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 01:53:44,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-28 01:53:44,360 INFO L175 Difference]: Start difference. First operand has 108 places, 154 transitions, 1358 flow. Second operand 6 states and 132 transitions. [2024-06-28 01:53:44,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 182 transitions, 1808 flow [2024-06-28 01:53:44,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 182 transitions, 1759 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 01:53:44,416 INFO L231 Difference]: Finished difference. Result has 112 places, 157 transitions, 1399 flow [2024-06-28 01:53:44,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1399, PETRI_PLACES=112, PETRI_TRANSITIONS=157} [2024-06-28 01:53:44,418 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-06-28 01:53:44,418 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 157 transitions, 1399 flow [2024-06-28 01:53:44,418 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 01:53:44,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:44,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:44,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:53:44,419 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:44,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:44,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1177193760, now seen corresponding path program 1 times [2024-06-28 01:53:44,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:44,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409362751] [2024-06-28 01:53:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:44,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:45,417 INFO 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 01:53:45,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:45,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409362751] [2024-06-28 01:53:45,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409362751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:45,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:45,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:45,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223450515] [2024-06-28 01:53:45,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:45,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:45,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:45,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:45,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:45,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:45,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 157 transitions, 1399 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 01:53:45,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:45,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:45,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:46,933 INFO L124 PetriNetUnfolderBase]: 5631/8813 cut-off events. [2024-06-28 01:53:46,934 INFO L125 PetriNetUnfolderBase]: For 51576/51585 co-relation queries the response was YES. [2024-06-28 01:53:46,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38389 conditions, 8813 events. 5631/8813 cut-off events. For 51576/51585 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 54282 event pairs, 1633 based on Foata normal form. 14/8558 useless extension candidates. Maximal degree in co-relation 38337. Up to 6805 conditions per place. [2024-06-28 01:53:46,997 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 183 selfloop transitions, 77 changer transitions 0/267 dead transitions. [2024-06-28 01:53:46,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 267 transitions, 2659 flow [2024-06-28 01:53:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:53:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:53:47,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:53:47,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603864734299517 [2024-06-28 01:53:47,002 INFO L175 Difference]: Start difference. First operand has 112 places, 157 transitions, 1399 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:53:47,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 267 transitions, 2659 flow [2024-06-28 01:53:47,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 267 transitions, 2595 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:47,076 INFO L231 Difference]: Finished difference. Result has 121 places, 182 transitions, 1859 flow [2024-06-28 01:53:47,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1859, PETRI_PLACES=121, PETRI_TRANSITIONS=182} [2024-06-28 01:53:47,078 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 69 predicate places. [2024-06-28 01:53:47,078 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 182 transitions, 1859 flow [2024-06-28 01:53:47,078 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 01:53:47,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:47,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:47,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:53:47,079 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:47,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:47,079 INFO L85 PathProgramCache]: Analyzing trace with hash -323055199, now seen corresponding path program 1 times [2024-06-28 01:53:47,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:47,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104796908] [2024-06-28 01:53:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:47,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:47,937 INFO 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 01:53:47,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:47,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104796908] [2024-06-28 01:53:47,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104796908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:47,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:47,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:47,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240706886] [2024-06-28 01:53:47,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:47,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:47,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:47,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:47,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:48,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:48,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 182 transitions, 1859 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 01:53:48,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:48,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:48,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:49,384 INFO L124 PetriNetUnfolderBase]: 5773/9012 cut-off events. [2024-06-28 01:53:49,384 INFO L125 PetriNetUnfolderBase]: For 74581/74590 co-relation queries the response was YES. [2024-06-28 01:53:49,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45254 conditions, 9012 events. 5773/9012 cut-off events. For 74581/74590 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 55399 event pairs, 1584 based on Foata normal form. 10/8752 useless extension candidates. Maximal degree in co-relation 45197. Up to 7570 conditions per place. [2024-06-28 01:53:49,462 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 183 selfloop transitions, 78 changer transitions 0/268 dead transitions. [2024-06-28 01:53:49,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 268 transitions, 3104 flow [2024-06-28 01:53:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:53:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:53:49,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:53:49,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407608695652174 [2024-06-28 01:53:49,464 INFO L175 Difference]: Start difference. First operand has 121 places, 182 transitions, 1859 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:53:49,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 268 transitions, 3104 flow [2024-06-28 01:53:49,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 268 transitions, 2970 flow, removed 66 selfloop flow, removed 1 redundant places. [2024-06-28 01:53:49,589 INFO L231 Difference]: Finished difference. Result has 130 places, 204 transitions, 2245 flow [2024-06-28 01:53:49,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1769, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2245, PETRI_PLACES=130, PETRI_TRANSITIONS=204} [2024-06-28 01:53:49,589 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 78 predicate places. [2024-06-28 01:53:49,589 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 204 transitions, 2245 flow [2024-06-28 01:53:49,590 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 01:53:49,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:49,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:49,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:53:49,590 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:49,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1177040155, now seen corresponding path program 2 times [2024-06-28 01:53:49,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:49,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831585426] [2024-06-28 01:53:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:49,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:50,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:50,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831585426] [2024-06-28 01:53:50,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831585426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:50,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:50,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:50,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839242402] [2024-06-28 01:53:50,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:50,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:50,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:50,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:50,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:50,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:50,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 204 transitions, 2245 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 01:53:50,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:50,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:50,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:51,890 INFO L124 PetriNetUnfolderBase]: 6003/9342 cut-off events. [2024-06-28 01:53:51,890 INFO L125 PetriNetUnfolderBase]: For 89254/89263 co-relation queries the response was YES. [2024-06-28 01:53:51,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49523 conditions, 9342 events. 6003/9342 cut-off events. For 89254/89263 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 57322 event pairs, 1685 based on Foata normal form. 6/9074 useless extension candidates. Maximal degree in co-relation 49461. Up to 8088 conditions per place. [2024-06-28 01:53:51,987 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 218 selfloop transitions, 67 changer transitions 0/292 dead transitions. [2024-06-28 01:53:51,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 292 transitions, 3518 flow [2024-06-28 01:53:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:53:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:53:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-28 01:53:51,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130434782608696 [2024-06-28 01:53:51,989 INFO L175 Difference]: Start difference. First operand has 130 places, 204 transitions, 2245 flow. Second operand 10 states and 236 transitions. [2024-06-28 01:53:51,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 292 transitions, 3518 flow [2024-06-28 01:53:52,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 292 transitions, 3377 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:52,116 INFO L231 Difference]: Finished difference. Result has 139 places, 223 transitions, 2568 flow [2024-06-28 01:53:52,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2568, PETRI_PLACES=139, PETRI_TRANSITIONS=223} [2024-06-28 01:53:52,117 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2024-06-28 01:53:52,117 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 223 transitions, 2568 flow [2024-06-28 01:53:52,117 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 01:53:52,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:52,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:52,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:53:52,118 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:52,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash -319336129, now seen corresponding path program 3 times [2024-06-28 01:53:52,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:52,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071539455] [2024-06-28 01:53:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:52,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:52,863 INFO 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 01:53:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071539455] [2024-06-28 01:53:52,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071539455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:52,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:52,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:52,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822783770] [2024-06-28 01:53:52,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:52,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:52,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:52,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:52,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:52,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:52,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 223 transitions, 2568 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 01:53:52,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:52,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:52,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:54,407 INFO L124 PetriNetUnfolderBase]: 5989/9324 cut-off events. [2024-06-28 01:53:54,407 INFO L125 PetriNetUnfolderBase]: For 97834/97843 co-relation queries the response was YES. [2024-06-28 01:53:54,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50600 conditions, 9324 events. 5989/9324 cut-off events. For 97834/97843 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 57194 event pairs, 1682 based on Foata normal form. 10/9060 useless extension candidates. Maximal degree in co-relation 50534. Up to 8084 conditions per place. [2024-06-28 01:53:54,501 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 204 selfloop transitions, 64 changer transitions 0/275 dead transitions. [2024-06-28 01:53:54,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 275 transitions, 3426 flow [2024-06-28 01:53:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:53:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:53:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:53:54,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:53:54,503 INFO L175 Difference]: Start difference. First operand has 139 places, 223 transitions, 2568 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:53:54,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 275 transitions, 3426 flow [2024-06-28 01:53:54,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 275 transitions, 3271 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 01:53:54,685 INFO L231 Difference]: Finished difference. Result has 142 places, 223 transitions, 2553 flow [2024-06-28 01:53:54,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2413, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2553, PETRI_PLACES=142, PETRI_TRANSITIONS=223} [2024-06-28 01:53:54,685 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 90 predicate places. [2024-06-28 01:53:54,685 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 223 transitions, 2553 flow [2024-06-28 01:53:54,686 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 01:53:54,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:54,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:54,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:53:54,686 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:54,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash 279072914, now seen corresponding path program 2 times [2024-06-28 01:53:54,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:54,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256620114] [2024-06-28 01:53:54,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:54,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:55,547 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 01:53:55,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:55,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256620114] [2024-06-28 01:53:55,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256620114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:55,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:55,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:55,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665220569] [2024-06-28 01:53:55,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:55,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:55,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:55,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:55,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:55,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:55,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 223 transitions, 2553 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 01:53:55,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:55,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:55,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:57,174 INFO L124 PetriNetUnfolderBase]: 5968/9293 cut-off events. [2024-06-28 01:53:57,175 INFO L125 PetriNetUnfolderBase]: For 98860/98869 co-relation queries the response was YES. [2024-06-28 01:53:57,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50450 conditions, 9293 events. 5968/9293 cut-off events. For 98860/98869 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 57096 event pairs, 1682 based on Foata normal form. 8/9027 useless extension candidates. Maximal degree in co-relation 50382. Up to 8096 conditions per place. [2024-06-28 01:53:57,260 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 205 selfloop transitions, 67 changer transitions 0/279 dead transitions. [2024-06-28 01:53:57,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 279 transitions, 3447 flow [2024-06-28 01:53:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:53:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:53:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:53:57,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-28 01:53:57,262 INFO L175 Difference]: Start difference. First operand has 142 places, 223 transitions, 2553 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:53:57,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 279 transitions, 3447 flow [2024-06-28 01:53:57,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 279 transitions, 3241 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 01:53:57,431 INFO L231 Difference]: Finished difference. Result has 144 places, 231 transitions, 2645 flow [2024-06-28 01:53:57,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2645, PETRI_PLACES=144, PETRI_TRANSITIONS=231} [2024-06-28 01:53:57,432 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2024-06-28 01:53:57,432 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 231 transitions, 2645 flow [2024-06-28 01:53:57,432 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 01:53:57,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:57,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:57,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:53:57,433 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:57,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:57,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1105597639, now seen corresponding path program 4 times [2024-06-28 01:53:57,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:57,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014573013] [2024-06-28 01:53:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:57,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:58,198 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 01:53:58,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:58,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014573013] [2024-06-28 01:53:58,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014573013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:58,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:58,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:58,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515967091] [2024-06-28 01:53:58,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:58,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:58,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:58,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:58,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:58,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 231 transitions, 2645 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 01:53:58,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:58,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:58,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:59,856 INFO L124 PetriNetUnfolderBase]: 6114/9558 cut-off events. [2024-06-28 01:53:59,856 INFO L125 PetriNetUnfolderBase]: For 113131/113131 co-relation queries the response was YES. [2024-06-28 01:53:59,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52588 conditions, 9558 events. 6114/9558 cut-off events. For 113131/113131 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 58937 event pairs, 2734 based on Foata normal form. 4/9289 useless extension candidates. Maximal degree in co-relation 52518. Up to 8234 conditions per place. [2024-06-28 01:53:59,943 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 230 selfloop transitions, 54 changer transitions 0/291 dead transitions. [2024-06-28 01:53:59,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 291 transitions, 3757 flow [2024-06-28 01:53:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:53:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:53:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-28 01:53:59,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758454106280193 [2024-06-28 01:53:59,945 INFO L175 Difference]: Start difference. First operand has 144 places, 231 transitions, 2645 flow. Second operand 9 states and 197 transitions. [2024-06-28 01:53:59,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 291 transitions, 3757 flow [2024-06-28 01:54:00,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 291 transitions, 3635 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:00,170 INFO L231 Difference]: Finished difference. Result has 151 places, 245 transitions, 2915 flow [2024-06-28 01:54:00,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2915, PETRI_PLACES=151, PETRI_TRANSITIONS=245} [2024-06-28 01:54:00,171 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 99 predicate places. [2024-06-28 01:54:00,171 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 245 transitions, 2915 flow [2024-06-28 01:54:00,171 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 01:54:00,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:00,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:00,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:54:00,171 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:00,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash 422963444, now seen corresponding path program 3 times [2024-06-28 01:54:00,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:00,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849492084] [2024-06-28 01:54:00,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:00,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:00,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:00,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:00,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849492084] [2024-06-28 01:54:00,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849492084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:00,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:00,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939351741] [2024-06-28 01:54:00,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:00,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:00,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:00,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:00,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:01,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:01,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 245 transitions, 2915 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 01:54:01,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:01,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:01,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:02,781 INFO L124 PetriNetUnfolderBase]: 6105/9493 cut-off events. [2024-06-28 01:54:02,781 INFO L125 PetriNetUnfolderBase]: For 124134/124151 co-relation queries the response was YES. [2024-06-28 01:54:02,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53826 conditions, 9493 events. 6105/9493 cut-off events. For 124134/124151 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 57933 event pairs, 2156 based on Foata normal form. 16/9233 useless extension candidates. Maximal degree in co-relation 53752. Up to 8203 conditions per place. [2024-06-28 01:54:02,857 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 219 selfloop transitions, 75 changer transitions 0/301 dead transitions. [2024-06-28 01:54:02,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 301 transitions, 3991 flow [2024-06-28 01:54:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:54:02,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-28 01:54:02,859 INFO L175 Difference]: Start difference. First operand has 151 places, 245 transitions, 2915 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:54:02,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 301 transitions, 3991 flow [2024-06-28 01:54:03,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 301 transitions, 3814 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-28 01:54:03,073 INFO L231 Difference]: Finished difference. Result has 156 places, 254 transitions, 3128 flow [2024-06-28 01:54:03,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2762, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3128, PETRI_PLACES=156, PETRI_TRANSITIONS=254} [2024-06-28 01:54:03,073 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 104 predicate places. [2024-06-28 01:54:03,073 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 254 transitions, 3128 flow [2024-06-28 01:54:03,074 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 01:54:03,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:03,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:03,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:54:03,074 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:03,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:03,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1622422753, now seen corresponding path program 5 times [2024-06-28 01:54:03,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:03,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118481157] [2024-06-28 01:54:03,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:03,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:03,785 INFO 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 01:54:03,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118481157] [2024-06-28 01:54:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118481157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:03,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:03,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:03,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19305180] [2024-06-28 01:54:03,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:03,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:03,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:03,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:03,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:03,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:03,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 254 transitions, 3128 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 01:54:03,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:03,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:03,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:05,332 INFO L124 PetriNetUnfolderBase]: 6085/9465 cut-off events. [2024-06-28 01:54:05,332 INFO L125 PetriNetUnfolderBase]: For 130166/130183 co-relation queries the response was YES. [2024-06-28 01:54:05,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53975 conditions, 9465 events. 6085/9465 cut-off events. For 130166/130183 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 57801 event pairs, 2152 based on Foata normal form. 18/9207 useless extension candidates. Maximal degree in co-relation 53899. Up to 8154 conditions per place. [2024-06-28 01:54:05,446 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 215 selfloop transitions, 76 changer transitions 0/298 dead transitions. [2024-06-28 01:54:05,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 298 transitions, 4020 flow [2024-06-28 01:54:05,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:54:05,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372670807453416 [2024-06-28 01:54:05,448 INFO L175 Difference]: Start difference. First operand has 156 places, 254 transitions, 3128 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:54:05,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 298 transitions, 4020 flow [2024-06-28 01:54:05,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 298 transitions, 3808 flow, removed 55 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:05,777 INFO L231 Difference]: Finished difference. Result has 159 places, 254 transitions, 3084 flow [2024-06-28 01:54:05,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2916, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3084, PETRI_PLACES=159, PETRI_TRANSITIONS=254} [2024-06-28 01:54:05,777 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 107 predicate places. [2024-06-28 01:54:05,778 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 254 transitions, 3084 flow [2024-06-28 01:54:05,778 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 01:54:05,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:05,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:05,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:54:05,778 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:05,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:05,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1630681370, now seen corresponding path program 1 times [2024-06-28 01:54:05,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:05,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545232313] [2024-06-28 01:54:05,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:05,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:06,506 INFO 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 01:54:06,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:06,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545232313] [2024-06-28 01:54:06,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545232313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:06,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:06,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:06,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832246810] [2024-06-28 01:54:06,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:06,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:06,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:06,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:06,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:06,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 254 transitions, 3084 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 01:54:06,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:06,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:06,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:08,026 INFO L124 PetriNetUnfolderBase]: 6086/9522 cut-off events. [2024-06-28 01:54:08,026 INFO L125 PetriNetUnfolderBase]: For 133426/133435 co-relation queries the response was YES. [2024-06-28 01:54:08,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53960 conditions, 9522 events. 6086/9522 cut-off events. For 133426/133435 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 58756 event pairs, 2761 based on Foata normal form. 8/9256 useless extension candidates. Maximal degree in co-relation 53883. Up to 8533 conditions per place. [2024-06-28 01:54:08,118 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 243 selfloop transitions, 36 changer transitions 0/286 dead transitions. [2024-06-28 01:54:08,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 286 transitions, 3843 flow [2024-06-28 01:54:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:54:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:54:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:54:08,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-06-28 01:54:08,120 INFO L175 Difference]: Start difference. First operand has 159 places, 254 transitions, 3084 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:54:08,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 286 transitions, 3843 flow [2024-06-28 01:54:08,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 286 transitions, 3571 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:08,387 INFO L231 Difference]: Finished difference. Result has 160 places, 263 transitions, 3054 flow [2024-06-28 01:54:08,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2845, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3054, PETRI_PLACES=160, PETRI_TRANSITIONS=263} [2024-06-28 01:54:08,389 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 108 predicate places. [2024-06-28 01:54:08,389 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 263 transitions, 3054 flow [2024-06-28 01:54:08,390 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 01:54:08,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:08,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:08,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:54:08,390 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:08,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1630673713, now seen corresponding path program 6 times [2024-06-28 01:54:08,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:08,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752913939] [2024-06-28 01:54:08,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:08,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:09,029 INFO 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 01:54:09,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:09,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752913939] [2024-06-28 01:54:09,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752913939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:09,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:09,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:09,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962692990] [2024-06-28 01:54:09,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:09,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:09,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:09,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:09,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:09,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:09,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 263 transitions, 3054 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 01:54:09,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:09,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:09,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:10,618 INFO L124 PetriNetUnfolderBase]: 6102/9544 cut-off events. [2024-06-28 01:54:10,619 INFO L125 PetriNetUnfolderBase]: For 138392/138404 co-relation queries the response was YES. [2024-06-28 01:54:10,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53997 conditions, 9544 events. 6102/9544 cut-off events. For 138392/138404 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 58965 event pairs, 2768 based on Foata normal form. 12/9282 useless extension candidates. Maximal degree in co-relation 53919. Up to 8531 conditions per place. [2024-06-28 01:54:10,712 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 255 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2024-06-28 01:54:10,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 298 transitions, 3805 flow [2024-06-28 01:54:10,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:54:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:54:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:54:10,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-28 01:54:10,713 INFO L175 Difference]: Start difference. First operand has 160 places, 263 transitions, 3054 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:54:10,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 298 transitions, 3805 flow [2024-06-28 01:54:11,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 298 transitions, 3748 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 01:54:11,054 INFO L231 Difference]: Finished difference. Result has 165 places, 267 transitions, 3157 flow [2024-06-28 01:54:11,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3157, PETRI_PLACES=165, PETRI_TRANSITIONS=267} [2024-06-28 01:54:11,055 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 113 predicate places. [2024-06-28 01:54:11,055 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 267 transitions, 3157 flow [2024-06-28 01:54:11,055 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 01:54:11,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:11,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:11,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:54:11,056 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:11,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1005023893, now seen corresponding path program 1 times [2024-06-28 01:54:11,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:11,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469333392] [2024-06-28 01:54:11,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:11,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:11,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:11,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469333392] [2024-06-28 01:54:11,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469333392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:11,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:11,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:11,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470174623] [2024-06-28 01:54:11,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:11,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:11,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:11,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:11,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:11,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:11,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 267 transitions, 3157 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:11,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:11,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:11,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:14,103 INFO L124 PetriNetUnfolderBase]: 7738/11863 cut-off events. [2024-06-28 01:54:14,103 INFO L125 PetriNetUnfolderBase]: For 173040/173064 co-relation queries the response was YES. [2024-06-28 01:54:14,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68467 conditions, 11863 events. 7738/11863 cut-off events. For 173040/173064 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 73683 event pairs, 1993 based on Foata normal form. 38/11606 useless extension candidates. Maximal degree in co-relation 68387. Up to 9139 conditions per place. [2024-06-28 01:54:14,227 INFO L140 encePairwiseOnDemand]: 27/46 looper letters, 344 selfloop transitions, 120 changer transitions 0/471 dead transitions. [2024-06-28 01:54:14,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 471 transitions, 6219 flow [2024-06-28 01:54:14,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:54:14,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:54:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-28 01:54:14,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630434782608695 [2024-06-28 01:54:14,231 INFO L175 Difference]: Start difference. First operand has 165 places, 267 transitions, 3157 flow. Second operand 10 states and 259 transitions. [2024-06-28 01:54:14,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 471 transitions, 6219 flow [2024-06-28 01:54:14,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 471 transitions, 6112 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:54:14,678 INFO L231 Difference]: Finished difference. Result has 175 places, 374 transitions, 4901 flow [2024-06-28 01:54:14,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3050, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4901, PETRI_PLACES=175, PETRI_TRANSITIONS=374} [2024-06-28 01:54:14,679 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 123 predicate places. [2024-06-28 01:54:14,679 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 374 transitions, 4901 flow [2024-06-28 01:54:14,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:14,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:14,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:14,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:54:14,680 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:14,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:14,681 INFO L85 PathProgramCache]: Analyzing trace with hash -776086881, now seen corresponding path program 2 times [2024-06-28 01:54:14,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:14,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054515469] [2024-06-28 01:54:14,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:14,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:15,547 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 01:54:15,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054515469] [2024-06-28 01:54:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054515469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:15,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:15,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:15,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430131880] [2024-06-28 01:54:15,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:15,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:15,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:15,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:15,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:15,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:15,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 374 transitions, 4901 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:15,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:15,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:15,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:18,855 INFO L124 PetriNetUnfolderBase]: 11041/16864 cut-off events. [2024-06-28 01:54:18,855 INFO L125 PetriNetUnfolderBase]: For 284027/284051 co-relation queries the response was YES. [2024-06-28 01:54:18,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110168 conditions, 16864 events. 11041/16864 cut-off events. For 284027/284051 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 110926 event pairs, 2740 based on Foata normal form. 38/16506 useless extension candidates. Maximal degree in co-relation 110082. Up to 11739 conditions per place. [2024-06-28 01:54:19,019 INFO L140 encePairwiseOnDemand]: 27/46 looper letters, 432 selfloop transitions, 242 changer transitions 0/681 dead transitions. [2024-06-28 01:54:19,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 681 transitions, 10251 flow [2024-06-28 01:54:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:54:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:54:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-28 01:54:19,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673913043478261 [2024-06-28 01:54:19,020 INFO L175 Difference]: Start difference. First operand has 175 places, 374 transitions, 4901 flow. Second operand 10 states and 261 transitions. [2024-06-28 01:54:19,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 681 transitions, 10251 flow [2024-06-28 01:54:20,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 681 transitions, 9997 flow, removed 119 selfloop flow, removed 2 redundant places. [2024-06-28 01:54:20,250 INFO L231 Difference]: Finished difference. Result has 188 places, 560 transitions, 8490 flow [2024-06-28 01:54:20,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4757, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8490, PETRI_PLACES=188, PETRI_TRANSITIONS=560} [2024-06-28 01:54:20,250 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 136 predicate places. [2024-06-28 01:54:20,251 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 560 transitions, 8490 flow [2024-06-28 01:54:20,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:20,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:20,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:20,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:54:20,251 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:20,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:20,252 INFO L85 PathProgramCache]: Analyzing trace with hash -321851177, now seen corresponding path program 3 times [2024-06-28 01:54:20,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:20,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215682016] [2024-06-28 01:54:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:20,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:20,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:20,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215682016] [2024-06-28 01:54:20,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215682016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:20,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:20,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934203681] [2024-06-28 01:54:20,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:20,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:20,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:20,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:20,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:20,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:54:20,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 560 transitions, 8490 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:20,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:20,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:54:20,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:24,572 INFO L124 PetriNetUnfolderBase]: 10992/17194 cut-off events. [2024-06-28 01:54:24,572 INFO L125 PetriNetUnfolderBase]: For 329014/329375 co-relation queries the response was YES. [2024-06-28 01:54:24,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116434 conditions, 17194 events. 10992/17194 cut-off events. For 329014/329375 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 118475 event pairs, 2969 based on Foata normal form. 202/16972 useless extension candidates. Maximal degree in co-relation 116341. Up to 12199 conditions per place. [2024-06-28 01:54:24,806 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 372 selfloop transitions, 232 changer transitions 0/705 dead transitions. [2024-06-28 01:54:24,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 705 transitions, 11457 flow [2024-06-28 01:54:24,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:54:24,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603864734299517 [2024-06-28 01:54:24,808 INFO L175 Difference]: Start difference. First operand has 188 places, 560 transitions, 8490 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:54:24,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 705 transitions, 11457 flow [2024-06-28 01:54:26,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 705 transitions, 11239 flow, removed 101 selfloop flow, removed 2 redundant places. [2024-06-28 01:54:26,188 INFO L231 Difference]: Finished difference. Result has 197 places, 619 transitions, 9859 flow [2024-06-28 01:54:26,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8380, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9859, PETRI_PLACES=197, PETRI_TRANSITIONS=619} [2024-06-28 01:54:26,189 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 145 predicate places. [2024-06-28 01:54:26,190 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 619 transitions, 9859 flow [2024-06-28 01:54:26,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:26,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:26,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:26,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:54:26,190 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:26,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:26,191 INFO L85 PathProgramCache]: Analyzing trace with hash 63134611, now seen corresponding path program 4 times [2024-06-28 01:54:26,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:26,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177199000] [2024-06-28 01:54:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:26,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:26,960 INFO 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 01:54:26,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:26,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177199000] [2024-06-28 01:54:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177199000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:26,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:26,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507516008] [2024-06-28 01:54:26,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:26,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:26,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:27,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:54:27,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 619 transitions, 9859 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:27,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:27,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:54:27,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:31,646 INFO L124 PetriNetUnfolderBase]: 12540/19462 cut-off events. [2024-06-28 01:54:31,646 INFO L125 PetriNetUnfolderBase]: For 419968/420544 co-relation queries the response was YES. [2024-06-28 01:54:31,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137429 conditions, 19462 events. 12540/19462 cut-off events. For 419968/420544 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 136092 event pairs, 3817 based on Foata normal form. 347/19383 useless extension candidates. Maximal degree in co-relation 137332. Up to 13995 conditions per place. [2024-06-28 01:54:31,897 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 398 selfloop transitions, 315 changer transitions 0/814 dead transitions. [2024-06-28 01:54:31,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 814 transitions, 13986 flow [2024-06-28 01:54:31,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:31,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:31,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:54:31,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603864734299517 [2024-06-28 01:54:31,899 INFO L175 Difference]: Start difference. First operand has 197 places, 619 transitions, 9859 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:54:31,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 814 transitions, 13986 flow [2024-06-28 01:54:33,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 814 transitions, 13583 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:33,356 INFO L231 Difference]: Finished difference. Result has 204 places, 726 transitions, 12156 flow [2024-06-28 01:54:33,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9594, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12156, PETRI_PLACES=204, PETRI_TRANSITIONS=726} [2024-06-28 01:54:33,357 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 152 predicate places. [2024-06-28 01:54:33,357 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 726 transitions, 12156 flow [2024-06-28 01:54:33,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:33,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:33,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:33,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:54:33,358 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:33,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:33,358 INFO L85 PathProgramCache]: Analyzing trace with hash 97358611, now seen corresponding path program 5 times [2024-06-28 01:54:33,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:33,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210791565] [2024-06-28 01:54:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:34,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:34,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210791565] [2024-06-28 01:54:34,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210791565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:34,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:34,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:54:34,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921428848] [2024-06-28 01:54:34,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:34,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:54:34,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:34,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:54:34,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:54:34,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:54:34,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 726 transitions, 12156 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:34,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:34,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:54:34,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:39,114 INFO L124 PetriNetUnfolderBase]: 12994/20155 cut-off events. [2024-06-28 01:54:39,114 INFO L125 PetriNetUnfolderBase]: For 446349/446838 co-relation queries the response was YES. [2024-06-28 01:54:39,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146257 conditions, 20155 events. 12994/20155 cut-off events. For 446349/446838 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 141140 event pairs, 4061 based on Foata normal form. 327/20069 useless extension candidates. Maximal degree in co-relation 146156. Up to 15561 conditions per place. [2024-06-28 01:54:39,390 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 455 selfloop transitions, 289 changer transitions 0/845 dead transitions. [2024-06-28 01:54:39,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 845 transitions, 15176 flow [2024-06-28 01:54:39,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:39,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:54:39,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531400966183575 [2024-06-28 01:54:39,392 INFO L175 Difference]: Start difference. First operand has 204 places, 726 transitions, 12156 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:54:39,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 845 transitions, 15176 flow [2024-06-28 01:54:41,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 845 transitions, 15004 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 01:54:41,324 INFO L231 Difference]: Finished difference. Result has 211 places, 764 transitions, 13532 flow [2024-06-28 01:54:41,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11988, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13532, PETRI_PLACES=211, PETRI_TRANSITIONS=764} [2024-06-28 01:54:41,326 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 159 predicate places. [2024-06-28 01:54:41,327 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 764 transitions, 13532 flow [2024-06-28 01:54:41,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:41,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:41,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:41,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:54:41,327 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:41,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:41,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1120039401, now seen corresponding path program 6 times [2024-06-28 01:54:41,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:41,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107611551] [2024-06-28 01:54:41,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:41,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:42,243 INFO 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 01:54:42,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:42,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107611551] [2024-06-28 01:54:42,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107611551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:42,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:42,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:42,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550560406] [2024-06-28 01:54:42,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:42,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:42,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:42,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:42,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:42,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:42,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 764 transitions, 13532 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:42,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:42,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:42,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:48,382 INFO L124 PetriNetUnfolderBase]: 14753/22369 cut-off events. [2024-06-28 01:54:48,383 INFO L125 PetriNetUnfolderBase]: For 495485/495507 co-relation queries the response was YES. [2024-06-28 01:54:48,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168110 conditions, 22369 events. 14753/22369 cut-off events. For 495485/495507 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 151498 event pairs, 4030 based on Foata normal form. 56/22036 useless extension candidates. Maximal degree in co-relation 168006. Up to 18284 conditions per place. [2024-06-28 01:54:48,711 INFO L140 encePairwiseOnDemand]: 27/46 looper letters, 646 selfloop transitions, 272 changer transitions 0/925 dead transitions. [2024-06-28 01:54:48,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 925 transitions, 17600 flow [2024-06-28 01:54:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:54:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:54:48,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 279 transitions. [2024-06-28 01:54:48,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513833992094862 [2024-06-28 01:54:48,713 INFO L175 Difference]: Start difference. First operand has 211 places, 764 transitions, 13532 flow. Second operand 11 states and 279 transitions. [2024-06-28 01:54:48,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 925 transitions, 17600 flow [2024-06-28 01:54:51,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 925 transitions, 16816 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:51,107 INFO L231 Difference]: Finished difference. Result has 218 places, 791 transitions, 14217 flow [2024-06-28 01:54:51,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12844, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14217, PETRI_PLACES=218, PETRI_TRANSITIONS=791} [2024-06-28 01:54:51,109 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 166 predicate places. [2024-06-28 01:54:51,109 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 791 transitions, 14217 flow [2024-06-28 01:54:51,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:51,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:51,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:51,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:54:51,110 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:51,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1117238117, now seen corresponding path program 1 times [2024-06-28 01:54:51,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:51,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023591260] [2024-06-28 01:54:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:51,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:51,943 INFO 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 01:54:51,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:51,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023591260] [2024-06-28 01:54:51,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023591260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:51,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:51,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:51,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134119851] [2024-06-28 01:54:51,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:51,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:51,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:51,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:51,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:52,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:54:52,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 791 transitions, 14217 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:52,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:52,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:54:52,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:58,537 INFO L124 PetriNetUnfolderBase]: 15805/23625 cut-off events. [2024-06-28 01:54:58,538 INFO L125 PetriNetUnfolderBase]: For 513221/513282 co-relation queries the response was YES. [2024-06-28 01:54:58,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180395 conditions, 23625 events. 15805/23625 cut-off events. For 513221/513282 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 156835 event pairs, 4579 based on Foata normal form. 45/23324 useless extension candidates. Maximal degree in co-relation 180288. Up to 19831 conditions per place. [2024-06-28 01:54:58,907 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 612 selfloop transitions, 399 changer transitions 0/1018 dead transitions. [2024-06-28 01:54:58,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 1018 transitions, 19177 flow [2024-06-28 01:54:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:54:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:54:58,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-28 01:54:58,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304347826086957 [2024-06-28 01:54:58,909 INFO L175 Difference]: Start difference. First operand has 218 places, 791 transitions, 14217 flow. Second operand 10 states and 244 transitions. [2024-06-28 01:54:58,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 1018 transitions, 19177 flow [2024-06-28 01:55:01,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 1018 transitions, 18594 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 01:55:01,248 INFO L231 Difference]: Finished difference. Result has 225 places, 925 transitions, 16682 flow [2024-06-28 01:55:01,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13643, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16682, PETRI_PLACES=225, PETRI_TRANSITIONS=925} [2024-06-28 01:55:01,249 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 173 predicate places. [2024-06-28 01:55:01,249 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 925 transitions, 16682 flow [2024-06-28 01:55:01,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:01,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:55:01,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:55:01,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:55:01,250 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:55:01,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:55:01,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1764448757, now seen corresponding path program 7 times [2024-06-28 01:55:01,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:55:01,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950333434] [2024-06-28 01:55:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:55:01,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:55:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:55:02,122 INFO 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 01:55:02,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:55:02,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950333434] [2024-06-28 01:55:02,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950333434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:55:02,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:55:02,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:55:02,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12208610] [2024-06-28 01:55:02,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:55:02,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:55:02,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:55:02,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:55:02,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:55:02,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:55:02,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 925 transitions, 16682 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:55:02,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:55:02,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:55:02,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand