./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe001_power.opt_pso.oepc_pso.opt_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/safe001_power.opt_pso.oepc_pso.opt_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/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe001_power.opt_pso.oepc_pso.opt_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 01:51:17,379 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:51:17,420 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:51:17,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:51:17,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:51:17,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:51:17,439 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:51:17,439 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:51:17,439 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:51:17,440 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:51:17,440 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:51:17,440 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:51:17,441 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:51:17,441 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:51:17,441 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:51:17,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:51:17,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:51:17,442 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:51:17,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:51:17,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:51:17,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:51:17,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:51:17,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:51:17,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:51:17,444 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:51:17,445 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:51:17,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:51:17,445 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:51:17,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:51:17,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:51:17,446 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:51:17,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:51:17,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:51:17,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:51:17,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:51:17,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:51:17,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:51:17,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:51:17,448 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:51:17,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:51:17,449 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:51:17,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:51:17,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:51:17,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:51:17,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:51:17,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:51:17,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:51:17,717 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:51:17,718 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:51:17,719 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-06-28 01:51:18,800 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:51:19,031 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:51:19,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-06-28 01:51:19,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60cc0cc53/708f0614dcf6417f8188ebe33111007e/FLAG833e12b4f [2024-06-28 01:51:19,063 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60cc0cc53/708f0614dcf6417f8188ebe33111007e [2024-06-28 01:51:19,066 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:51:19,067 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:51:19,068 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 01:51:19,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:51:19,213 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:51:19,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:51:19,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:51:19,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:51:19,220 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:51:19" (1/2) ... [2024-06-28 01:51:19,221 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc1fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:51:19, skipping insertion in model container [2024-06-28 01:51:19,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:51:19" (1/2) ... [2024-06-28 01:51:19,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a8be000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:51:19, skipping insertion in model container [2024-06-28 01:51:19,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:51:19" (2/2) ... [2024-06-28 01:51:19,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc1fac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19, skipping insertion in model container [2024-06-28 01:51:19,224 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:51:19" (2/2) ... [2024-06-28 01:51:19,225 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:51:19,291 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:51:19,292 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) [2024-06-28 01:51:19,292 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) [2024-06-28 01:51:19,292 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] ((((((((((((((((! multithreaded || x$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) [2024-06-28 01:51:19,292 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:51:19,293 INFO L106 edCorrectnessWitness]: ghost_update [L819-L819] multithreaded = 1; [2024-06-28 01:51:19,330 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:51:19,487 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/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i[976,989] [2024-06-28 01:51:19,661 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:51:19,670 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:51:19,705 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/safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i[976,989] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:51:19,817 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:51:19,845 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:51:19,845 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19 WrapperNode [2024-06-28 01:51:19,845 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:51:19,846 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:51:19,846 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:51:19,846 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:51:19,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,899 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-06-28 01:51:19,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:51:19,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:51:19,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:51:19,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:51:19,909 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,912 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,925 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 01:51:19,926 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,926 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,955 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,958 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:51:19,959 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:51:19,959 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:51:19,959 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:51:19,960 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (1/1) ... [2024-06-28 01:51:19,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:51:19,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:51:20,002 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 01:51:20,067 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 01:51:20,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:51:20,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:51:20,080 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:51:20,081 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:51:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:51:20,081 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:51:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:51:20,081 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:51:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:51:20,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:51:20,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:51:20,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:51:20,084 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 01:51:20,180 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:51:20,182 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:51:20,505 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:51:20,505 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:51:20,611 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:51:20,612 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:51:20,612 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:51:20 BoogieIcfgContainer [2024-06-28 01:51:20,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:51:20,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:51:20,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:51:20,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:51:20,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:51:19" (1/4) ... [2024-06-28 01:51:20,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0ce22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:51:20, skipping insertion in model container [2024-06-28 01:51:20,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:51:19" (2/4) ... [2024-06-28 01:51:20,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0ce22a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:51:20, skipping insertion in model container [2024-06-28 01:51:20,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:51:19" (3/4) ... [2024-06-28 01:51:20,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0ce22a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:51:20, skipping insertion in model container [2024-06-28 01:51:20,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:51:20" (4/4) ... [2024-06-28 01:51:20,618 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-06-28 01:51:20,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:51:20,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:51:20,630 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:51:20,661 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:51:20,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:51:20,701 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:51:20,702 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:51:20,704 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 5. Compared 73 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 01:51:20,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:51:20,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-28 01:51:20,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:51:20,716 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;@6ca86bde, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:51:20,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:51:20,719 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:51:20,719 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:51:20,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:51:20,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:20,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:51:20,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:20,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash 351296548, now seen corresponding path program 1 times [2024-06-28 01:51:20,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:20,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172028118] [2024-06-28 01:51:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:20,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:21,446 INFO 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 01:51:21,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:21,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172028118] [2024-06-28 01:51:21,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172028118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:21,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:21,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:51:21,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224073264] [2024-06-28 01:51:21,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:21,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:51:21,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:51:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:51:21,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:51:21,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:21,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:21,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:51:21,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:22,218 INFO L124 PetriNetUnfolderBase]: 3506/5075 cut-off events. [2024-06-28 01:51:22,219 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-28 01:51:22,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10226 conditions, 5075 events. 3506/5075 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27633 event pairs, 1988 based on Foata normal form. 176/4989 useless extension candidates. Maximal degree in co-relation 10214. Up to 5051 conditions per place. [2024-06-28 01:51:22,246 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 42 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:51:22,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 225 flow [2024-06-28 01:51:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:51:22,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:51:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-28 01:51:22,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6811594202898551 [2024-06-28 01:51:22,257 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 94 transitions. [2024-06-28 01:51:22,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 225 flow [2024-06-28 01:51:22,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:51:22,262 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-28 01:51:22,264 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 01:51:22,266 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:51:22,267 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-28 01:51:22,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:22,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:22,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:22,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:51:22,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:22,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:22,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1359200355, now seen corresponding path program 1 times [2024-06-28 01:51:22,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:22,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172572731] [2024-06-28 01:51:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:22,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:22,798 INFO 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 01:51:22,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:22,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172572731] [2024-06-28 01:51:22,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172572731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:22,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:22,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:51:22,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943458128] [2024-06-28 01:51:22,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:22,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:51:22,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:22,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:51:22,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:51:22,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:51:22,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:22,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:22,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:51:22,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:23,413 INFO L124 PetriNetUnfolderBase]: 4247/6750 cut-off events. [2024-06-28 01:51:23,413 INFO L125 PetriNetUnfolderBase]: For 908/947 co-relation queries the response was YES. [2024-06-28 01:51:23,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14427 conditions, 6750 events. 4247/6750 cut-off events. For 908/947 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 41953 event pairs, 2001 based on Foata normal form. 13/6286 useless extension candidates. Maximal degree in co-relation 14415. Up to 6041 conditions per place. [2024-06-28 01:51:23,440 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 55 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2024-06-28 01:51:23,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 345 flow [2024-06-28 01:51:23,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:51:23,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:51:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-28 01:51:23,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6358695652173914 [2024-06-28 01:51:23,442 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 117 transitions. [2024-06-28 01:51:23,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 345 flow [2024-06-28 01:51:23,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:51:23,444 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 214 flow [2024-06-28 01:51:23,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-06-28 01:51:23,445 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-28 01:51:23,445 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 214 flow [2024-06-28 01:51:23,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:23,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:23,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:23,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:51:23,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:23,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:23,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1359446230, now seen corresponding path program 1 times [2024-06-28 01:51:23,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:23,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597795210] [2024-06-28 01:51:23,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:23,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:23,493 INFO 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 01:51:23,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:23,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597795210] [2024-06-28 01:51:23,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597795210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:23,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:23,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:51:23,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559439218] [2024-06-28 01:51:23,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:23,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:51:23,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:23,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:51:23,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:51:23,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 46 [2024-06-28 01:51:23,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:23,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:23,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 46 [2024-06-28 01:51:23,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:23,738 INFO L124 PetriNetUnfolderBase]: 1032/2076 cut-off events. [2024-06-28 01:51:23,738 INFO L125 PetriNetUnfolderBase]: For 537/605 co-relation queries the response was YES. [2024-06-28 01:51:23,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 2076 events. 1032/2076 cut-off events. For 537/605 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14260 event pairs, 420 based on Foata normal form. 13/1969 useless extension candidates. Maximal degree in co-relation 4314. Up to 1329 conditions per place. [2024-06-28 01:51:23,750 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 34 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-06-28 01:51:23,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 296 flow [2024-06-28 01:51:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:51:23,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:51:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-28 01:51:23,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7536231884057971 [2024-06-28 01:51:23,752 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 214 flow. Second operand 3 states and 104 transitions. [2024-06-28 01:51:23,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 296 flow [2024-06-28 01:51:23,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 292 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:51:23,755 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 194 flow [2024-06-28 01:51:23,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-28 01:51:23,755 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-06-28 01:51:23,756 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 194 flow [2024-06-28 01:51:23,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:23,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:23,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:23,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:51:23,757 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:23,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1981792872, now seen corresponding path program 1 times [2024-06-28 01:51:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:23,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680865537] [2024-06-28 01:51:23,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:23,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:24,599 INFO 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 01:51:24,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:24,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680865537] [2024-06-28 01:51:24,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680865537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:24,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:24,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:51:24,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555317141] [2024-06-28 01:51:24,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:24,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:51:24,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:24,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:51:24,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:51:24,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:51:24,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:24,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:24,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:51:24,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:25,207 INFO L124 PetriNetUnfolderBase]: 3600/5743 cut-off events. [2024-06-28 01:51:25,207 INFO L125 PetriNetUnfolderBase]: For 3146/3209 co-relation queries the response was YES. [2024-06-28 01:51:25,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13527 conditions, 5743 events. 3600/5743 cut-off events. For 3146/3209 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 34521 event pairs, 1445 based on Foata normal form. 25/5581 useless extension candidates. Maximal degree in co-relation 13510. Up to 5086 conditions per place. [2024-06-28 01:51:25,230 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 58 selfloop transitions, 12 changer transitions 1/81 dead transitions. [2024-06-28 01:51:25,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 412 flow [2024-06-28 01:51:25,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:51:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:51:25,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-06-28 01:51:25,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591304347826087 [2024-06-28 01:51:25,232 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 194 flow. Second operand 5 states and 136 transitions. [2024-06-28 01:51:25,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 412 flow [2024-06-28 01:51:25,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:51:25,236 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 230 flow [2024-06-28 01:51:25,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-28 01:51:25,237 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-06-28 01:51:25,237 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 230 flow [2024-06-28 01:51:25,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:25,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:25,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:25,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:51:25,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:25,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash -759188824, now seen corresponding path program 1 times [2024-06-28 01:51:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:25,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963859596] [2024-06-28 01:51:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:25,682 INFO 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 01:51:25,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:25,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963859596] [2024-06-28 01:51:25,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963859596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:25,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:25,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:51:25,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97289912] [2024-06-28 01:51:25,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:25,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:51:25,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:25,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:51:25,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:51:25,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:51:25,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:25,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:25,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:51:25,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:26,234 INFO L124 PetriNetUnfolderBase]: 2959/4746 cut-off events. [2024-06-28 01:51:26,234 INFO L125 PetriNetUnfolderBase]: For 3540/3548 co-relation queries the response was YES. [2024-06-28 01:51:26,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11891 conditions, 4746 events. 2959/4746 cut-off events. For 3540/3548 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 28022 event pairs, 1630 based on Foata normal form. 6/4597 useless extension candidates. Maximal degree in co-relation 11872. Up to 4260 conditions per place. [2024-06-28 01:51:26,251 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 60 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-06-28 01:51:26,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 78 transitions, 458 flow [2024-06-28 01:51:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:51:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:51:26,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 01:51:26,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508695652173913 [2024-06-28 01:51:26,253 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 230 flow. Second operand 5 states and 117 transitions. [2024-06-28 01:51:26,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 78 transitions, 458 flow [2024-06-28 01:51:26,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 422 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:51:26,256 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 283 flow [2024-06-28 01:51:26,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2024-06-28 01:51:26,262 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-06-28 01:51:26,262 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 283 flow [2024-06-28 01:51:26,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:26,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:26,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:26,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:51:26,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:26,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:26,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2060015213, now seen corresponding path program 1 times [2024-06-28 01:51:26,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:26,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931987300] [2024-06-28 01:51:26,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:26,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:26,800 INFO 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 01:51:26,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:26,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931987300] [2024-06-28 01:51:26,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931987300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:26,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:26,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:51:26,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16981567] [2024-06-28 01:51:26,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:26,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:51:26,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:26,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:51:26,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:51:26,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:26,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 283 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 01:51:26,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:26,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:26,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:27,543 INFO L124 PetriNetUnfolderBase]: 4334/6879 cut-off events. [2024-06-28 01:51:27,544 INFO L125 PetriNetUnfolderBase]: For 6882/6882 co-relation queries the response was YES. [2024-06-28 01:51:27,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18097 conditions, 6879 events. 4334/6879 cut-off events. For 6882/6882 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 41380 event pairs, 2228 based on Foata normal form. 2/6659 useless extension candidates. Maximal degree in co-relation 18075. Up to 6169 conditions per place. [2024-06-28 01:51:27,577 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 78 selfloop transitions, 12 changer transitions 0/97 dead transitions. [2024-06-28 01:51:27,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 572 flow [2024-06-28 01:51:27,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:51:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:51:27,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 01:51:27,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4746376811594203 [2024-06-28 01:51:27,579 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 283 flow. Second operand 6 states and 131 transitions. [2024-06-28 01:51:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 572 flow [2024-06-28 01:51:27,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 555 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:51:27,585 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 354 flow [2024-06-28 01:51:27,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=354, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-06-28 01:51:27,586 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2024-06-28 01:51:27,586 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 354 flow [2024-06-28 01:51:27,587 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 01:51:27,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:27,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:27,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:51:27,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:27,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:27,588 INFO L85 PathProgramCache]: Analyzing trace with hash 564039719, now seen corresponding path program 1 times [2024-06-28 01:51:27,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:27,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347284981] [2024-06-28 01:51:27,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:27,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:28,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:28,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347284981] [2024-06-28 01:51:28,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347284981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:28,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:28,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:51:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909539732] [2024-06-28 01:51:28,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:28,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:51:28,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:28,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:51:28,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:51:28,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:28,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 354 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 01:51:28,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:28,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:28,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:29,242 INFO L124 PetriNetUnfolderBase]: 4337/6883 cut-off events. [2024-06-28 01:51:29,243 INFO L125 PetriNetUnfolderBase]: For 8602/8602 co-relation queries the response was YES. [2024-06-28 01:51:29,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19247 conditions, 6883 events. 4337/6883 cut-off events. For 8602/8602 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 41389 event pairs, 2184 based on Foata normal form. 2/6663 useless extension candidates. Maximal degree in co-relation 19221. Up to 6155 conditions per place. [2024-06-28 01:51:29,270 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 86 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2024-06-28 01:51:29,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 109 transitions, 668 flow [2024-06-28 01:51:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:51:29,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:51:29,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 01:51:29,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751552795031056 [2024-06-28 01:51:29,272 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 354 flow. Second operand 7 states and 153 transitions. [2024-06-28 01:51:29,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 109 transitions, 668 flow [2024-06-28 01:51:29,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 109 transitions, 666 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:51:29,282 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 417 flow [2024-06-28 01:51:29,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=417, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-06-28 01:51:29,283 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 21 predicate places. [2024-06-28 01:51:29,283 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 417 flow [2024-06-28 01:51:29,283 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 01:51:29,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:29,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:29,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:51:29,284 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:29,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:29,284 INFO L85 PathProgramCache]: Analyzing trace with hash 126911991, now seen corresponding path program 1 times [2024-06-28 01:51:29,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:29,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866975011] [2024-06-28 01:51:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:29,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:29,811 INFO 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 01:51:29,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866975011] [2024-06-28 01:51:29,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866975011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:29,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:29,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:51:29,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115178171] [2024-06-28 01:51:29,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:29,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:51:29,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:29,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:51:29,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:51:29,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:51:29,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 417 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:29,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:29,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:51:29,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:30,554 INFO L124 PetriNetUnfolderBase]: 4305/6788 cut-off events. [2024-06-28 01:51:30,554 INFO L125 PetriNetUnfolderBase]: For 13077/13240 co-relation queries the response was YES. [2024-06-28 01:51:30,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20990 conditions, 6788 events. 4305/6788 cut-off events. For 13077/13240 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 40717 event pairs, 1694 based on Foata normal form. 39/6467 useless extension candidates. Maximal degree in co-relation 20961. Up to 5958 conditions per place. [2024-06-28 01:51:30,587 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 77 selfloop transitions, 23 changer transitions 0/112 dead transitions. [2024-06-28 01:51:30,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 112 transitions, 740 flow [2024-06-28 01:51:30,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:51:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:51:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:51:30,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-28 01:51:30,591 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 417 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:51:30,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 112 transitions, 740 flow [2024-06-28 01:51:30,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 705 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:51:30,599 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 503 flow [2024-06-28 01:51:30,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=503, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2024-06-28 01:51:30,602 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-06-28 01:51:30,602 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 503 flow [2024-06-28 01:51:30,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:30,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:30,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:30,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:51:30,603 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:30,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:30,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1890099451, now seen corresponding path program 2 times [2024-06-28 01:51:30,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:30,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735833890] [2024-06-28 01:51:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:31,113 INFO 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 01:51:31,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735833890] [2024-06-28 01:51:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735833890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:31,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:31,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:51:31,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550262715] [2024-06-28 01:51:31,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:31,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:51:31,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:31,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:51:31,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:51:31,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:51:31,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 503 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:31,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:31,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:51:31,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:32,026 INFO L124 PetriNetUnfolderBase]: 4462/7001 cut-off events. [2024-06-28 01:51:32,026 INFO L125 PetriNetUnfolderBase]: For 19652/19949 co-relation queries the response was YES. [2024-06-28 01:51:32,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24139 conditions, 7001 events. 4462/7001 cut-off events. For 19652/19949 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 41553 event pairs, 1671 based on Foata normal form. 75/6716 useless extension candidates. Maximal degree in co-relation 24108. Up to 6097 conditions per place. [2024-06-28 01:51:32,067 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 105 selfloop transitions, 53 changer transitions 0/170 dead transitions. [2024-06-28 01:51:32,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 170 transitions, 1330 flow [2024-06-28 01:51:32,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:32,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:32,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:51:32,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:51:32,069 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 503 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:51:32,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 170 transitions, 1330 flow [2024-06-28 01:51:32,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 170 transitions, 1255 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 01:51:32,083 INFO L231 Difference]: Finished difference. Result has 84 places, 120 transitions, 925 flow [2024-06-28 01:51:32,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=925, PETRI_PLACES=84, PETRI_TRANSITIONS=120} [2024-06-28 01:51:32,083 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-06-28 01:51:32,084 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 120 transitions, 925 flow [2024-06-28 01:51:32,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:32,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:32,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:32,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:51:32,085 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:32,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1425960199, now seen corresponding path program 3 times [2024-06-28 01:51:32,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:32,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41439154] [2024-06-28 01:51:32,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:32,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:32,622 INFO 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 01:51:32,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:32,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41439154] [2024-06-28 01:51:32,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41439154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:32,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:32,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:51:32,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062920258] [2024-06-28 01:51:32,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:32,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:51:32,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:51:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:51:32,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:51:32,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 120 transitions, 925 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:32,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:32,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:51:32,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:33,392 INFO L124 PetriNetUnfolderBase]: 4608/7232 cut-off events. [2024-06-28 01:51:33,392 INFO L125 PetriNetUnfolderBase]: For 29029/29308 co-relation queries the response was YES. [2024-06-28 01:51:33,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27630 conditions, 7232 events. 4608/7232 cut-off events. For 29029/29308 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 43240 event pairs, 1579 based on Foata normal form. 83/6950 useless extension candidates. Maximal degree in co-relation 27594. Up to 6066 conditions per place. [2024-06-28 01:51:33,434 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 87 selfloop transitions, 65 changer transitions 0/164 dead transitions. [2024-06-28 01:51:33,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 164 transitions, 1494 flow [2024-06-28 01:51:33,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:51:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:51:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:51:33,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:51:33,436 INFO L175 Difference]: Start difference. First operand has 84 places, 120 transitions, 925 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:51:33,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 164 transitions, 1494 flow [2024-06-28 01:51:33,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 164 transitions, 1427 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 01:51:33,463 INFO L231 Difference]: Finished difference. Result has 89 places, 133 transitions, 1180 flow [2024-06-28 01:51:33,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1180, PETRI_PLACES=89, PETRI_TRANSITIONS=133} [2024-06-28 01:51:33,464 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-06-28 01:51:33,464 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 133 transitions, 1180 flow [2024-06-28 01:51:33,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:33,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:33,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:33,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:51:33,465 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:33,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:33,465 INFO L85 PathProgramCache]: Analyzing trace with hash -480387466, now seen corresponding path program 1 times [2024-06-28 01:51:33,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:33,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189452698] [2024-06-28 01:51:33,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:33,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:34,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:34,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189452698] [2024-06-28 01:51:34,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189452698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:34,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:34,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:51:34,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226342993] [2024-06-28 01:51:34,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:34,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:51:34,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:34,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:51:34,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:51:34,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:34,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 133 transitions, 1180 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 01:51:34,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:34,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:34,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:34,964 INFO L124 PetriNetUnfolderBase]: 5236/8166 cut-off events. [2024-06-28 01:51:34,965 INFO L125 PetriNetUnfolderBase]: For 34170/34200 co-relation queries the response was YES. [2024-06-28 01:51:34,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32313 conditions, 8166 events. 5236/8166 cut-off events. For 34170/34200 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 48920 event pairs, 1493 based on Foata normal form. 28/7950 useless extension candidates. Maximal degree in co-relation 32274. Up to 7003 conditions per place. [2024-06-28 01:51:35,013 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 151 selfloop transitions, 42 changer transitions 0/200 dead transitions. [2024-06-28 01:51:35,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 200 transitions, 1994 flow [2024-06-28 01:51:35,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:51:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:51:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:51:35,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-06-28 01:51:35,023 INFO L175 Difference]: Start difference. First operand has 89 places, 133 transitions, 1180 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:51:35,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 200 transitions, 1994 flow [2024-06-28 01:51:35,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 200 transitions, 1888 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 01:51:35,069 INFO L231 Difference]: Finished difference. Result has 95 places, 156 transitions, 1432 flow [2024-06-28 01:51:35,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1432, PETRI_PLACES=95, PETRI_TRANSITIONS=156} [2024-06-28 01:51:35,070 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 43 predicate places. [2024-06-28 01:51:35,070 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 156 transitions, 1432 flow [2024-06-28 01:51:35,070 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 01:51:35,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:35,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:35,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:51:35,071 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:35,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash 305087188, now seen corresponding path program 2 times [2024-06-28 01:51:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:35,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842128076] [2024-06-28 01:51:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:35,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:35,691 INFO 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 01:51:35,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:35,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842128076] [2024-06-28 01:51:35,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842128076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:35,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:35,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:51:35,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261602852] [2024-06-28 01:51:35,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:35,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:51:35,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:35,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:51:35,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:51:35,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:35,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 156 transitions, 1432 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 01:51:35,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:35,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:35,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:36,725 INFO L124 PetriNetUnfolderBase]: 5438/8455 cut-off events. [2024-06-28 01:51:36,725 INFO L125 PetriNetUnfolderBase]: For 37771/37801 co-relation queries the response was YES. [2024-06-28 01:51:36,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36193 conditions, 8455 events. 5438/8455 cut-off events. For 37771/37801 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 50612 event pairs, 1589 based on Foata normal form. 25/8231 useless extension candidates. Maximal degree in co-relation 36151. Up to 7369 conditions per place. [2024-06-28 01:51:36,780 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 171 selfloop transitions, 47 changer transitions 0/225 dead transitions. [2024-06-28 01:51:36,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 225 transitions, 2290 flow [2024-06-28 01:51:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:36,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 01:51:36,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-28 01:51:36,782 INFO L175 Difference]: Start difference. First operand has 95 places, 156 transitions, 1432 flow. Second operand 8 states and 183 transitions. [2024-06-28 01:51:36,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 225 transitions, 2290 flow [2024-06-28 01:51:36,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 225 transitions, 2241 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 01:51:36,820 INFO L231 Difference]: Finished difference. Result has 103 places, 173 transitions, 1695 flow [2024-06-28 01:51:36,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1695, PETRI_PLACES=103, PETRI_TRANSITIONS=173} [2024-06-28 01:51:36,821 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 51 predicate places. [2024-06-28 01:51:36,821 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 173 transitions, 1695 flow [2024-06-28 01:51:36,821 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 01:51:36,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:36,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:36,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:51:36,822 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:36,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:36,822 INFO L85 PathProgramCache]: Analyzing trace with hash 305354098, now seen corresponding path program 3 times [2024-06-28 01:51:36,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:36,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921526086] [2024-06-28 01:51:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:36,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:37,385 INFO 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 01:51:37,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:37,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921526086] [2024-06-28 01:51:37,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921526086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:37,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:37,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:51:37,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10884816] [2024-06-28 01:51:37,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:37,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:51:37,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:37,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:51:37,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:51:37,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:37,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 173 transitions, 1695 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 01:51:37,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:37,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:37,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:38,334 INFO L124 PetriNetUnfolderBase]: 5441/8457 cut-off events. [2024-06-28 01:51:38,334 INFO L125 PetriNetUnfolderBase]: For 47847/47877 co-relation queries the response was YES. [2024-06-28 01:51:38,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38938 conditions, 8457 events. 5441/8457 cut-off events. For 47847/47877 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 50380 event pairs, 1804 based on Foata normal form. 22/8230 useless extension candidates. Maximal degree in co-relation 38892. Up to 7532 conditions per place. [2024-06-28 01:51:38,393 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 192 selfloop transitions, 37 changer transitions 0/236 dead transitions. [2024-06-28 01:51:38,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 236 transitions, 2632 flow [2024-06-28 01:51:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:51:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:51:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:51:38,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484472049689441 [2024-06-28 01:51:38,395 INFO L175 Difference]: Start difference. First operand has 103 places, 173 transitions, 1695 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:51:38,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 236 transitions, 2632 flow [2024-06-28 01:51:38,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 236 transitions, 2529 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-06-28 01:51:38,452 INFO L231 Difference]: Finished difference. Result has 111 places, 196 transitions, 2064 flow [2024-06-28 01:51:38,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1620, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2064, PETRI_PLACES=111, PETRI_TRANSITIONS=196} [2024-06-28 01:51:38,453 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 59 predicate places. [2024-06-28 01:51:38,453 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 196 transitions, 2064 flow [2024-06-28 01:51:38,453 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 01:51:38,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:38,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:38,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:51:38,454 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:38,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:38,454 INFO L85 PathProgramCache]: Analyzing trace with hash 305364018, now seen corresponding path program 1 times [2024-06-28 01:51:38,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:38,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816365123] [2024-06-28 01:51:38,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:38,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:39,385 INFO 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 01:51:39,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:39,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816365123] [2024-06-28 01:51:39,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816365123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:39,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:39,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:39,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358982794] [2024-06-28 01:51:39,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:39,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:39,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:39,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:39,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:39,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 196 transitions, 2064 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 01:51:39,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:39,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:39,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:40,696 INFO L124 PetriNetUnfolderBase]: 5446/8484 cut-off events. [2024-06-28 01:51:40,696 INFO L125 PetriNetUnfolderBase]: For 54537/54537 co-relation queries the response was YES. [2024-06-28 01:51:40,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40326 conditions, 8484 events. 5446/8484 cut-off events. For 54537/54537 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 50666 event pairs, 1872 based on Foata normal form. 4/8239 useless extension candidates. Maximal degree in co-relation 40274. Up to 7626 conditions per place. [2024-06-28 01:51:40,746 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 216 selfloop transitions, 20 changer transitions 0/243 dead transitions. [2024-06-28 01:51:40,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 243 transitions, 2737 flow [2024-06-28 01:51:40,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-28 01:51:40,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2024-06-28 01:51:40,748 INFO L175 Difference]: Start difference. First operand has 111 places, 196 transitions, 2064 flow. Second operand 8 states and 175 transitions. [2024-06-28 01:51:40,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 243 transitions, 2737 flow [2024-06-28 01:51:40,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 243 transitions, 2695 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-28 01:51:40,809 INFO L231 Difference]: Finished difference. Result has 118 places, 199 transitions, 2112 flow [2024-06-28 01:51:40,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2112, PETRI_PLACES=118, PETRI_TRANSITIONS=199} [2024-06-28 01:51:40,810 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2024-06-28 01:51:40,810 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 199 transitions, 2112 flow [2024-06-28 01:51:40,810 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 01:51:40,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:40,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:40,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:51:40,811 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:40,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:40,811 INFO L85 PathProgramCache]: Analyzing trace with hash -360785050, now seen corresponding path program 1 times [2024-06-28 01:51:40,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:40,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084033765] [2024-06-28 01:51:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:40,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:41,618 INFO 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 01:51:41,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:41,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084033765] [2024-06-28 01:51:41,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084033765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:41,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:41,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:41,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409590956] [2024-06-28 01:51:41,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:41,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:41,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:41,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:41,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:41,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:51:41,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 199 transitions, 2112 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:41,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:41,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:51:41,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:42,744 INFO L124 PetriNetUnfolderBase]: 5078/7917 cut-off events. [2024-06-28 01:51:42,744 INFO L125 PetriNetUnfolderBase]: For 60168/60781 co-relation queries the response was YES. [2024-06-28 01:51:42,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38949 conditions, 7917 events. 5078/7917 cut-off events. For 60168/60781 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 47172 event pairs, 1682 based on Foata normal form. 200/7704 useless extension candidates. Maximal degree in co-relation 38894. Up to 6875 conditions per place. [2024-06-28 01:51:42,809 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 163 selfloop transitions, 53 changer transitions 0/235 dead transitions. [2024-06-28 01:51:42,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 235 transitions, 2738 flow [2024-06-28 01:51:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:51:42,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:51:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 01:51:42,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-28 01:51:42,811 INFO L175 Difference]: Start difference. First operand has 118 places, 199 transitions, 2112 flow. Second operand 6 states and 141 transitions. [2024-06-28 01:51:42,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 235 transitions, 2738 flow [2024-06-28 01:51:42,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 235 transitions, 2626 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 01:51:42,894 INFO L231 Difference]: Finished difference. Result has 118 places, 205 transitions, 2227 flow [2024-06-28 01:51:42,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2227, PETRI_PLACES=118, PETRI_TRANSITIONS=205} [2024-06-28 01:51:42,895 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2024-06-28 01:51:42,895 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 205 transitions, 2227 flow [2024-06-28 01:51:42,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:42,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:42,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:42,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:51:42,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:42,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:42,896 INFO L85 PathProgramCache]: Analyzing trace with hash 589139172, now seen corresponding path program 1 times [2024-06-28 01:51:42,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:42,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284088846] [2024-06-28 01:51:42,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:42,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:43,516 INFO 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 01:51:43,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:43,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284088846] [2024-06-28 01:51:43,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284088846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:43,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:43,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:43,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559457237] [2024-06-28 01:51:43,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:43,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:43,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:43,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:43,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:43,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:43,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 205 transitions, 2227 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 01:51:43,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:43,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:43,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:44,898 INFO L124 PetriNetUnfolderBase]: 5888/9073 cut-off events. [2024-06-28 01:51:44,899 INFO L125 PetriNetUnfolderBase]: For 68312/68354 co-relation queries the response was YES. [2024-06-28 01:51:44,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44664 conditions, 9073 events. 5888/9073 cut-off events. For 68312/68354 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 53942 event pairs, 1690 based on Foata normal form. 38/8855 useless extension candidates. Maximal degree in co-relation 44608. Up to 7592 conditions per place. [2024-06-28 01:51:44,962 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 212 selfloop transitions, 72 changer transitions 0/291 dead transitions. [2024-06-28 01:51:44,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 291 transitions, 3436 flow [2024-06-28 01:51:44,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:51:44,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:51:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:51:44,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2024-06-28 01:51:44,964 INFO L175 Difference]: Start difference. First operand has 118 places, 205 transitions, 2227 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:51:44,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 291 transitions, 3436 flow [2024-06-28 01:51:45,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 291 transitions, 3330 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:51:45,049 INFO L231 Difference]: Finished difference. Result has 126 places, 235 transitions, 2687 flow [2024-06-28 01:51:45,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2687, PETRI_PLACES=126, PETRI_TRANSITIONS=235} [2024-06-28 01:51:45,049 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 74 predicate places. [2024-06-28 01:51:45,049 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 235 transitions, 2687 flow [2024-06-28 01:51:45,050 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 01:51:45,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:45,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:45,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:51:45,050 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:45,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:45,050 INFO L85 PathProgramCache]: Analyzing trace with hash 592887072, now seen corresponding path program 2 times [2024-06-28 01:51:45,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:45,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268269534] [2024-06-28 01:51:45,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:45,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:45,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:45,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268269534] [2024-06-28 01:51:45,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268269534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:45,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:45,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:45,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833062228] [2024-06-28 01:51:45,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:45,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:45,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:45,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:45,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:45,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:45,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 235 transitions, 2687 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 01:51:45,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:45,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:45,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:47,130 INFO L124 PetriNetUnfolderBase]: 7121/10728 cut-off events. [2024-06-28 01:51:47,130 INFO L125 PetriNetUnfolderBase]: For 105630/105636 co-relation queries the response was YES. [2024-06-28 01:51:47,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59530 conditions, 10728 events. 7121/10728 cut-off events. For 105630/105636 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 63199 event pairs, 1460 based on Foata normal form. 10/10483 useless extension candidates. Maximal degree in co-relation 59470. Up to 7591 conditions per place. [2024-06-28 01:51:47,225 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 241 selfloop transitions, 112 changer transitions 0/360 dead transitions. [2024-06-28 01:51:47,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 360 transitions, 4595 flow [2024-06-28 01:51:47,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:47,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:51:47,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:51:47,227 INFO L175 Difference]: Start difference. First operand has 126 places, 235 transitions, 2687 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:51:47,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 360 transitions, 4595 flow [2024-06-28 01:51:47,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 360 transitions, 4440 flow, removed 55 selfloop flow, removed 3 redundant places. [2024-06-28 01:51:47,401 INFO L231 Difference]: Finished difference. Result has 133 places, 287 transitions, 3515 flow [2024-06-28 01:51:47,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3515, PETRI_PLACES=133, PETRI_TRANSITIONS=287} [2024-06-28 01:51:47,402 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 81 predicate places. [2024-06-28 01:51:47,402 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 287 transitions, 3515 flow [2024-06-28 01:51:47,402 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 01:51:47,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:47,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:47,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:51:47,403 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:47,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash 592893582, now seen corresponding path program 3 times [2024-06-28 01:51:47,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:47,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74531698] [2024-06-28 01:51:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:47,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:47,987 INFO 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 01:51:47,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:47,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74531698] [2024-06-28 01:51:47,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74531698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:47,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:47,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:47,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379914149] [2024-06-28 01:51:47,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:47,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:47,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:47,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:47,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:48,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:48,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 287 transitions, 3515 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 01:51:48,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:48,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:48,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:49,605 INFO L124 PetriNetUnfolderBase]: 7433/11148 cut-off events. [2024-06-28 01:51:49,605 INFO L125 PetriNetUnfolderBase]: For 132722/132731 co-relation queries the response was YES. [2024-06-28 01:51:49,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67692 conditions, 11148 events. 7433/11148 cut-off events. For 132722/132731 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 65607 event pairs, 1392 based on Foata normal form. 22/10915 useless extension candidates. Maximal degree in co-relation 67628. Up to 7801 conditions per place. [2024-06-28 01:51:49,717 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 233 selfloop transitions, 133 changer transitions 0/373 dead transitions. [2024-06-28 01:51:49,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 373 transitions, 5081 flow [2024-06-28 01:51:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:49,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:49,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:51:49,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461956521739131 [2024-06-28 01:51:49,720 INFO L175 Difference]: Start difference. First operand has 133 places, 287 transitions, 3515 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:51:49,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 373 transitions, 5081 flow [2024-06-28 01:51:50,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 373 transitions, 4909 flow, removed 75 selfloop flow, removed 2 redundant places. [2024-06-28 01:51:50,014 INFO L231 Difference]: Finished difference. Result has 141 places, 309 transitions, 4095 flow [2024-06-28 01:51:50,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4095, PETRI_PLACES=141, PETRI_TRANSITIONS=309} [2024-06-28 01:51:50,015 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 89 predicate places. [2024-06-28 01:51:50,015 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 309 transitions, 4095 flow [2024-06-28 01:51:50,015 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 01:51:50,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:50,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:50,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:51:50,016 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:50,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:50,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2007107676, now seen corresponding path program 1 times [2024-06-28 01:51:50,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:50,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175163071] [2024-06-28 01:51:50,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:50,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:50,702 INFO 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 01:51:50,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:50,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175163071] [2024-06-28 01:51:50,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175163071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:50,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:50,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:50,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262927584] [2024-06-28 01:51:50,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:50,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:50,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:50,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:50,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:50,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:50,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 309 transitions, 4095 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 01:51:50,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:50,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:50,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:52,585 INFO L124 PetriNetUnfolderBase]: 7393/11095 cut-off events. [2024-06-28 01:51:52,585 INFO L125 PetriNetUnfolderBase]: For 141106/141115 co-relation queries the response was YES. [2024-06-28 01:51:52,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69956 conditions, 11095 events. 7393/11095 cut-off events. For 141106/141115 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 65446 event pairs, 1370 based on Foata normal form. 20/10860 useless extension candidates. Maximal degree in co-relation 69887. Up to 8133 conditions per place. [2024-06-28 01:51:52,673 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 242 selfloop transitions, 144 changer transitions 0/393 dead transitions. [2024-06-28 01:51:52,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 393 transitions, 5732 flow [2024-06-28 01:51:52,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:52,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:51:52,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:51:52,675 INFO L175 Difference]: Start difference. First operand has 141 places, 309 transitions, 4095 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:51:52,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 393 transitions, 5732 flow [2024-06-28 01:51:52,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 393 transitions, 5547 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-28 01:51:52,954 INFO L231 Difference]: Finished difference. Result has 148 places, 334 transitions, 4788 flow [2024-06-28 01:51:52,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3970, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4788, PETRI_PLACES=148, PETRI_TRANSITIONS=334} [2024-06-28 01:51:52,955 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 96 predicate places. [2024-06-28 01:51:52,955 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 334 transitions, 4788 flow [2024-06-28 01:51:52,955 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 01:51:52,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:52,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:52,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:51:52,955 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:52,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:52,956 INFO L85 PathProgramCache]: Analyzing trace with hash 867770118, now seen corresponding path program 2 times [2024-06-28 01:51:52,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:52,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236617590] [2024-06-28 01:51:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:52,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:53,740 INFO 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 01:51:53,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:53,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236617590] [2024-06-28 01:51:53,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236617590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:53,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:53,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:53,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454608524] [2024-06-28 01:51:53,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:53,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:53,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:53,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:53,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:53,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:53,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 334 transitions, 4788 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 01:51:53,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:53,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:53,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:55,690 INFO L124 PetriNetUnfolderBase]: 7483/11205 cut-off events. [2024-06-28 01:51:55,691 INFO L125 PetriNetUnfolderBase]: For 153868/153904 co-relation queries the response was YES. [2024-06-28 01:51:55,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74218 conditions, 11205 events. 7483/11205 cut-off events. For 153868/153904 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 65621 event pairs, 1651 based on Foata normal form. 29/10986 useless extension candidates. Maximal degree in co-relation 74145. Up to 10058 conditions per place. [2024-06-28 01:51:55,816 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 323 selfloop transitions, 71 changer transitions 0/401 dead transitions. [2024-06-28 01:51:55,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 401 transitions, 6042 flow [2024-06-28 01:51:55,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:51:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:51:55,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 01:51:55,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024154589371981 [2024-06-28 01:51:55,819 INFO L175 Difference]: Start difference. First operand has 148 places, 334 transitions, 4788 flow. Second operand 9 states and 208 transitions. [2024-06-28 01:51:55,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 401 transitions, 6042 flow [2024-06-28 01:51:56,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 401 transitions, 5919 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-28 01:51:56,263 INFO L231 Difference]: Finished difference. Result has 154 places, 340 transitions, 4927 flow [2024-06-28 01:51:56,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4665, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4927, PETRI_PLACES=154, PETRI_TRANSITIONS=340} [2024-06-28 01:51:56,264 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 102 predicate places. [2024-06-28 01:51:56,265 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 340 transitions, 4927 flow [2024-06-28 01:51:56,266 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 01:51:56,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:56,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:56,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:51:56,266 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:56,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:56,267 INFO L85 PathProgramCache]: Analyzing trace with hash 867769870, now seen corresponding path program 4 times [2024-06-28 01:51:56,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:56,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512900186] [2024-06-28 01:51:56,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:56,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:57,046 INFO 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 01:51:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:57,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512900186] [2024-06-28 01:51:57,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512900186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:57,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:57,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:57,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176854261] [2024-06-28 01:51:57,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:57,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:57,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:57,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:57,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:51:57,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 340 transitions, 4927 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 01:51:57,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:57,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:51:57,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:59,035 INFO L124 PetriNetUnfolderBase]: 8404/12458 cut-off events. [2024-06-28 01:51:59,036 INFO L125 PetriNetUnfolderBase]: For 184855/184864 co-relation queries the response was YES. [2024-06-28 01:51:59,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84529 conditions, 12458 events. 8404/12458 cut-off events. For 184855/184864 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 72767 event pairs, 1564 based on Foata normal form. 22/12225 useless extension candidates. Maximal degree in co-relation 84454. Up to 9937 conditions per place. [2024-06-28 01:51:59,165 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 296 selfloop transitions, 142 changer transitions 0/445 dead transitions. [2024-06-28 01:51:59,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 445 transitions, 6888 flow [2024-06-28 01:51:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:51:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:51:59,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 01:51:59,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314009661835749 [2024-06-28 01:51:59,167 INFO L175 Difference]: Start difference. First operand has 154 places, 340 transitions, 4927 flow. Second operand 9 states and 220 transitions. [2024-06-28 01:51:59,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 445 transitions, 6888 flow [2024-06-28 01:51:59,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 445 transitions, 6573 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-28 01:51:59,631 INFO L231 Difference]: Finished difference. Result has 159 places, 381 transitions, 5690 flow [2024-06-28 01:51:59,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4709, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5690, PETRI_PLACES=159, PETRI_TRANSITIONS=381} [2024-06-28 01:51:59,631 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 107 predicate places. [2024-06-28 01:51:59,631 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 381 transitions, 5690 flow [2024-06-28 01:51:59,632 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 01:51:59,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:59,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:59,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:51:59,632 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:51:59,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:59,632 INFO L85 PathProgramCache]: Analyzing trace with hash 867763360, now seen corresponding path program 5 times [2024-06-28 01:51:59,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:59,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120135727] [2024-06-28 01:51:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:59,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:00,204 INFO 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 01:52:00,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:00,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120135727] [2024-06-28 01:52:00,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120135727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:00,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:00,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:00,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250581757] [2024-06-28 01:52:00,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:00,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:00,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:00,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:00,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:00,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:52:00,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 381 transitions, 5690 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 01:52:00,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:00,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:52:00,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:02,358 INFO L124 PetriNetUnfolderBase]: 8456/12528 cut-off events. [2024-06-28 01:52:02,359 INFO L125 PetriNetUnfolderBase]: For 214612/214621 co-relation queries the response was YES. [2024-06-28 01:52:02,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89916 conditions, 12528 events. 8456/12528 cut-off events. For 214612/214621 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 73173 event pairs, 1581 based on Foata normal form. 12/12285 useless extension candidates. Maximal degree in co-relation 89837. Up to 9984 conditions per place. [2024-06-28 01:52:02,500 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 307 selfloop transitions, 153 changer transitions 0/467 dead transitions. [2024-06-28 01:52:02,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 467 transitions, 7378 flow [2024-06-28 01:52:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:52:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:52:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-28 01:52:02,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:52:02,502 INFO L175 Difference]: Start difference. First operand has 159 places, 381 transitions, 5690 flow. Second operand 10 states and 245 transitions. [2024-06-28 01:52:02,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 467 transitions, 7378 flow [2024-06-28 01:52:03,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 467 transitions, 7105 flow, removed 119 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:03,094 INFO L231 Difference]: Finished difference. Result has 170 places, 396 transitions, 6088 flow [2024-06-28 01:52:03,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5459, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6088, PETRI_PLACES=170, PETRI_TRANSITIONS=396} [2024-06-28 01:52:03,094 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 118 predicate places. [2024-06-28 01:52:03,095 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 396 transitions, 6088 flow [2024-06-28 01:52:03,095 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 01:52:03,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:03,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:03,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:52:03,096 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:03,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:03,096 INFO L85 PathProgramCache]: Analyzing trace with hash 876044328, now seen corresponding path program 3 times [2024-06-28 01:52:03,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:03,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960054318] [2024-06-28 01:52:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:03,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:03,846 INFO 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 01:52:03,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:03,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960054318] [2024-06-28 01:52:03,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960054318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:03,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:03,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:03,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314082709] [2024-06-28 01:52:03,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:03,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:03,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:03,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:03,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:03,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:52:03,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 396 transitions, 6088 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 01:52:03,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:03,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:52:03,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:05,939 INFO L124 PetriNetUnfolderBase]: 8525/12627 cut-off events. [2024-06-28 01:52:05,939 INFO L125 PetriNetUnfolderBase]: For 221572/221581 co-relation queries the response was YES. [2024-06-28 01:52:06,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92036 conditions, 12627 events. 8525/12627 cut-off events. For 221572/221581 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 73451 event pairs, 1713 based on Foata normal form. 8/12378 useless extension candidates. Maximal degree in co-relation 91952. Up to 11102 conditions per place. [2024-06-28 01:52:06,114 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 421 selfloop transitions, 108 changer transitions 0/536 dead transitions. [2024-06-28 01:52:06,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 536 transitions, 9229 flow [2024-06-28 01:52:06,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:52:06,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:52:06,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:52:06,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-28 01:52:06,115 INFO L175 Difference]: Start difference. First operand has 170 places, 396 transitions, 6088 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:52:06,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 536 transitions, 9229 flow [2024-06-28 01:52:06,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 536 transitions, 8734 flow, removed 80 selfloop flow, removed 5 redundant places. [2024-06-28 01:52:06,727 INFO L231 Difference]: Finished difference. Result has 177 places, 476 transitions, 7657 flow [2024-06-28 01:52:06,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5728, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7657, PETRI_PLACES=177, PETRI_TRANSITIONS=476} [2024-06-28 01:52:06,727 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 125 predicate places. [2024-06-28 01:52:06,728 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 476 transitions, 7657 flow [2024-06-28 01:52:06,728 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 01:52:06,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:06,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:06,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:52:06,728 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:06,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash 876044080, now seen corresponding path program 6 times [2024-06-28 01:52:06,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:06,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015137984] [2024-06-28 01:52:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:06,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:07,303 INFO 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 01:52:07,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:07,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015137984] [2024-06-28 01:52:07,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015137984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:07,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:07,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:07,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973702525] [2024-06-28 01:52:07,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:07,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:07,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:07,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:07,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:07,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:52:07,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 476 transitions, 7657 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 01:52:07,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:07,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:52:07,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:09,425 INFO L124 PetriNetUnfolderBase]: 8505/12599 cut-off events. [2024-06-28 01:52:09,425 INFO L125 PetriNetUnfolderBase]: For 235681/235690 co-relation queries the response was YES. [2024-06-28 01:52:09,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93150 conditions, 12599 events. 8505/12599 cut-off events. For 235681/235690 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 73425 event pairs, 1715 based on Foata normal form. 10/12352 useless extension candidates. Maximal degree in co-relation 93061. Up to 10776 conditions per place. [2024-06-28 01:52:09,578 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 424 selfloop transitions, 132 changer transitions 0/563 dead transitions. [2024-06-28 01:52:09,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 563 transitions, 9720 flow [2024-06-28 01:52:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:52:09,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:52:09,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:52:09,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2024-06-28 01:52:09,580 INFO L175 Difference]: Start difference. First operand has 177 places, 476 transitions, 7657 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:52:09,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 563 transitions, 9720 flow [2024-06-28 01:52:10,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 563 transitions, 9484 flow, removed 117 selfloop flow, removed 1 redundant places. [2024-06-28 01:52:10,435 INFO L231 Difference]: Finished difference. Result has 186 places, 503 transitions, 8248 flow [2024-06-28 01:52:10,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7473, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8248, PETRI_PLACES=186, PETRI_TRANSITIONS=503} [2024-06-28 01:52:10,435 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 134 predicate places. [2024-06-28 01:52:10,435 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 503 transitions, 8248 flow [2024-06-28 01:52:10,436 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 01:52:10,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:10,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:10,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:52:10,436 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:10,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:10,437 INFO L85 PathProgramCache]: Analyzing trace with hash 876340998, now seen corresponding path program 4 times [2024-06-28 01:52:10,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:10,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836205694] [2024-06-28 01:52:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:10,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:11,134 INFO 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 01:52:11,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:11,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836205694] [2024-06-28 01:52:11,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836205694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:11,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:11,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:11,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154756718] [2024-06-28 01:52:11,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:11,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:11,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:11,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:11,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:11,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:52:11,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 503 transitions, 8248 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 01:52:11,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:11,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:52:11,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:13,698 INFO L124 PetriNetUnfolderBase]: 8513/12606 cut-off events. [2024-06-28 01:52:13,698 INFO L125 PetriNetUnfolderBase]: For 254274/254310 co-relation queries the response was YES. [2024-06-28 01:52:13,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95514 conditions, 12606 events. 8513/12606 cut-off events. For 254274/254310 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 73447 event pairs, 1948 based on Foata normal form. 26/12379 useless extension candidates. Maximal degree in co-relation 95420. Up to 11580 conditions per place. [2024-06-28 01:52:13,863 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 491 selfloop transitions, 84 changer transitions 0/582 dead transitions. [2024-06-28 01:52:13,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 582 transitions, 10098 flow [2024-06-28 01:52:13,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:52:13,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:52:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 01:52:13,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-28 01:52:13,865 INFO L175 Difference]: Start difference. First operand has 186 places, 503 transitions, 8248 flow. Second operand 9 states and 201 transitions. [2024-06-28 01:52:13,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 582 transitions, 10098 flow [2024-06-28 01:52:14,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 582 transitions, 9751 flow, removed 111 selfloop flow, removed 4 redundant places. [2024-06-28 01:52:14,630 INFO L231 Difference]: Finished difference. Result has 192 places, 524 transitions, 8525 flow [2024-06-28 01:52:14,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7972, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8525, PETRI_PLACES=192, PETRI_TRANSITIONS=524} [2024-06-28 01:52:14,631 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 140 predicate places. [2024-06-28 01:52:14,632 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 524 transitions, 8525 flow [2024-06-28 01:52:14,632 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 01:52:14,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:14,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:14,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:52:14,633 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:14,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:14,633 INFO L85 PathProgramCache]: Analyzing trace with hash -934769695, now seen corresponding path program 1 times [2024-06-28 01:52:14,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:14,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67132244] [2024-06-28 01:52:14,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:14,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:15,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:15,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67132244] [2024-06-28 01:52:15,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67132244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:15,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:15,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:52:15,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939447791] [2024-06-28 01:52:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:15,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:52:15,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:15,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:52:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:52:15,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:52:15,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 524 transitions, 8525 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:15,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:15,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:52:15,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:17,420 INFO L124 PetriNetUnfolderBase]: 8511/12609 cut-off events. [2024-06-28 01:52:17,420 INFO L125 PetriNetUnfolderBase]: For 259793/259829 co-relation queries the response was YES. [2024-06-28 01:52:17,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96452 conditions, 12609 events. 8511/12609 cut-off events. For 259793/259829 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 73485 event pairs, 2125 based on Foata normal form. 28/12383 useless extension candidates. Maximal degree in co-relation 96356. Up to 11706 conditions per place. [2024-06-28 01:52:17,599 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 509 selfloop transitions, 37 changer transitions 0/553 dead transitions. [2024-06-28 01:52:17,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 553 transitions, 9875 flow [2024-06-28 01:52:17,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:52:17,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:52:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-28 01:52:17,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826086956521739 [2024-06-28 01:52:17,601 INFO L175 Difference]: Start difference. First operand has 192 places, 524 transitions, 8525 flow. Second operand 5 states and 111 transitions. [2024-06-28 01:52:17,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 553 transitions, 9875 flow [2024-06-28 01:52:18,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 553 transitions, 9703 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-28 01:52:18,388 INFO L231 Difference]: Finished difference. Result has 193 places, 530 transitions, 8564 flow [2024-06-28 01:52:18,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8353, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8564, PETRI_PLACES=193, PETRI_TRANSITIONS=530} [2024-06-28 01:52:18,389 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 141 predicate places. [2024-06-28 01:52:18,389 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 530 transitions, 8564 flow [2024-06-28 01:52:18,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:18,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:18,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:18,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:52:18,390 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:18,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:18,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2087625146, now seen corresponding path program 1 times [2024-06-28 01:52:18,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:18,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488823070] [2024-06-28 01:52:18,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:18,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:19,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:19,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:19,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488823070] [2024-06-28 01:52:19,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488823070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:19,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:19,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:19,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775897271] [2024-06-28 01:52:19,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:19,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:19,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:19,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:19,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:19,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:52:19,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 530 transitions, 8564 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:19,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:19,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:52:19,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:21,598 INFO L124 PetriNetUnfolderBase]: 8466/12522 cut-off events. [2024-06-28 01:52:21,599 INFO L125 PetriNetUnfolderBase]: For 284099/284579 co-relation queries the response was YES. [2024-06-28 01:52:21,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98345 conditions, 12522 events. 8466/12522 cut-off events. For 284099/284579 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 72809 event pairs, 1972 based on Foata normal form. 50/12091 useless extension candidates. Maximal degree in co-relation 98246. Up to 11245 conditions per place. [2024-06-28 01:52:21,780 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 471 selfloop transitions, 85 changer transitions 0/611 dead transitions. [2024-06-28 01:52:21,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 611 transitions, 10514 flow [2024-06-28 01:52:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:52:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:52:21,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 01:52:21,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-28 01:52:21,782 INFO L175 Difference]: Start difference. First operand has 193 places, 530 transitions, 8564 flow. Second operand 9 states and 201 transitions. [2024-06-28 01:52:21,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 611 transitions, 10514 flow [2024-06-28 01:52:22,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 611 transitions, 10386 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 01:52:22,644 INFO L231 Difference]: Finished difference. Result has 203 places, 563 transitions, 9324 flow [2024-06-28 01:52:22,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8454, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9324, PETRI_PLACES=203, PETRI_TRANSITIONS=563} [2024-06-28 01:52:22,645 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-28 01:52:22,645 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 563 transitions, 9324 flow [2024-06-28 01:52:22,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:22,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:22,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:22,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:52:22,645 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:22,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1339920108, now seen corresponding path program 2 times [2024-06-28 01:52:22,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:22,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705593491] [2024-06-28 01:52:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:23,407 INFO 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 01:52:23,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:23,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705593491] [2024-06-28 01:52:23,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705593491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:23,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:23,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:23,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17247324] [2024-06-28 01:52:23,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:23,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:23,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:23,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:23,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:52:23,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 563 transitions, 9324 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:23,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:23,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:52:23,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:26,074 INFO L124 PetriNetUnfolderBase]: 8703/12862 cut-off events. [2024-06-28 01:52:26,074 INFO L125 PetriNetUnfolderBase]: For 313306/314055 co-relation queries the response was YES. [2024-06-28 01:52:26,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103215 conditions, 12862 events. 8703/12862 cut-off events. For 313306/314055 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 75049 event pairs, 1977 based on Foata normal form. 92/12463 useless extension candidates. Maximal degree in co-relation 103111. Up to 11485 conditions per place. [2024-06-28 01:52:26,254 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 475 selfloop transitions, 138 changer transitions 0/668 dead transitions. [2024-06-28 01:52:26,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 668 transitions, 11788 flow [2024-06-28 01:52:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:52:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:52:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 01:52:26,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096618357487923 [2024-06-28 01:52:26,256 INFO L175 Difference]: Start difference. First operand has 203 places, 563 transitions, 9324 flow. Second operand 9 states and 211 transitions. [2024-06-28 01:52:26,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 668 transitions, 11788 flow [2024-06-28 01:52:27,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 668 transitions, 11578 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:27,255 INFO L231 Difference]: Finished difference. Result has 212 places, 621 transitions, 10584 flow [2024-06-28 01:52:27,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9200, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10584, PETRI_PLACES=212, PETRI_TRANSITIONS=621} [2024-06-28 01:52:27,256 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 160 predicate places. [2024-06-28 01:52:27,256 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 621 transitions, 10584 flow [2024-06-28 01:52:27,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:27,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:27,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:27,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:52:27,257 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:27,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:27,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1014426692, now seen corresponding path program 3 times [2024-06-28 01:52:27,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:27,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160776331] [2024-06-28 01:52:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:27,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:28,380 INFO 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 01:52:28,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:28,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160776331] [2024-06-28 01:52:28,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160776331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:28,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:28,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:28,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013529680] [2024-06-28 01:52:28,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:28,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:28,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:28,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:28,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:28,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:52:28,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 621 transitions, 10584 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:28,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:28,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:52:28,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:31,378 INFO L124 PetriNetUnfolderBase]: 9101/13422 cut-off events. [2024-06-28 01:52:31,378 INFO L125 PetriNetUnfolderBase]: For 354322/355738 co-relation queries the response was YES. [2024-06-28 01:52:31,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109408 conditions, 13422 events. 9101/13422 cut-off events. For 354322/355738 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 78570 event pairs, 2164 based on Foata normal form. 246/13180 useless extension candidates. Maximal degree in co-relation 109300. Up to 11909 conditions per place. [2024-06-28 01:52:31,563 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 503 selfloop transitions, 179 changer transitions 0/737 dead transitions. [2024-06-28 01:52:31,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 737 transitions, 13405 flow [2024-06-28 01:52:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:52:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:52:31,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:52:31,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2024-06-28 01:52:31,565 INFO L175 Difference]: Start difference. First operand has 212 places, 621 transitions, 10584 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:52:31,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 737 transitions, 13405 flow [2024-06-28 01:52:32,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 737 transitions, 13233 flow, removed 79 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:32,668 INFO L231 Difference]: Finished difference. Result has 221 places, 681 transitions, 12141 flow [2024-06-28 01:52:32,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10492, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12141, PETRI_PLACES=221, PETRI_TRANSITIONS=681} [2024-06-28 01:52:32,670 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 169 predicate places. [2024-06-28 01:52:32,670 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 681 transitions, 12141 flow [2024-06-28 01:52:32,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:32,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:32,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:32,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:52:32,670 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:32,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:32,671 INFO L85 PathProgramCache]: Analyzing trace with hash 179180225, now seen corresponding path program 1 times [2024-06-28 01:52:32,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:32,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846607140] [2024-06-28 01:52:32,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:32,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:33,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:33,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846607140] [2024-06-28 01:52:33,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846607140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:33,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:33,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:33,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445448877] [2024-06-28 01:52:33,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:33,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:33,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:33,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:33,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:33,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:52:33,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 681 transitions, 12141 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 01:52:33,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:33,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:52:33,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:37,311 INFO L124 PetriNetUnfolderBase]: 10235/15054 cut-off events. [2024-06-28 01:52:37,311 INFO L125 PetriNetUnfolderBase]: For 387969/387971 co-relation queries the response was YES. [2024-06-28 01:52:37,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124019 conditions, 15054 events. 10235/15054 cut-off events. For 387969/387971 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 89489 event pairs, 2745 based on Foata normal form. 8/14815 useless extension candidates. Maximal degree in co-relation 123907. Up to 13073 conditions per place. [2024-06-28 01:52:37,637 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 590 selfloop transitions, 232 changer transitions 0/829 dead transitions. [2024-06-28 01:52:37,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 829 transitions, 15822 flow [2024-06-28 01:52:37,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 277 transitions. [2024-06-28 01:52:37,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018115942028986 [2024-06-28 01:52:37,672 INFO L175 Difference]: Start difference. First operand has 221 places, 681 transitions, 12141 flow. Second operand 12 states and 277 transitions. [2024-06-28 01:52:37,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 829 transitions, 15822 flow [2024-06-28 01:52:38,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 829 transitions, 15446 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:52:38,712 INFO L231 Difference]: Finished difference. Result has 231 places, 749 transitions, 13891 flow [2024-06-28 01:52:38,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11789, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13891, PETRI_PLACES=231, PETRI_TRANSITIONS=749} [2024-06-28 01:52:38,722 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 179 predicate places. [2024-06-28 01:52:38,722 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 749 transitions, 13891 flow [2024-06-28 01:52:38,722 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 01:52:38,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:38,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:38,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:52:38,723 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:38,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1995159950, now seen corresponding path program 4 times [2024-06-28 01:52:38,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:38,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541911622] [2024-06-28 01:52:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:38,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:39,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:39,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541911622] [2024-06-28 01:52:39,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541911622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:39,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:39,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:39,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534389258] [2024-06-28 01:52:39,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:39,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:39,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:39,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:52:39,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 749 transitions, 13891 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:39,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:39,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:52:39,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:43,271 INFO L124 PetriNetUnfolderBase]: 9909/14569 cut-off events. [2024-06-28 01:52:43,271 INFO L125 PetriNetUnfolderBase]: For 411298/412724 co-relation queries the response was YES. [2024-06-28 01:52:43,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123755 conditions, 14569 events. 9909/14569 cut-off events. For 411298/412724 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 86031 event pairs, 2505 based on Foata normal form. 257/14290 useless extension candidates. Maximal degree in co-relation 123639. Up to 13055 conditions per place. [2024-06-28 01:52:43,470 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 558 selfloop transitions, 197 changer transitions 0/814 dead transitions. [2024-06-28 01:52:43,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 814 transitions, 16023 flow [2024-06-28 01:52:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:52:43,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:52:43,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:52:43,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2024-06-28 01:52:43,472 INFO L175 Difference]: Start difference. First operand has 231 places, 749 transitions, 13891 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:52:43,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 814 transitions, 16023 flow [2024-06-28 01:52:44,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 814 transitions, 15720 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-28 01:52:44,772 INFO L231 Difference]: Finished difference. Result has 237 places, 766 transitions, 14477 flow [2024-06-28 01:52:44,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13588, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=552, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14477, PETRI_PLACES=237, PETRI_TRANSITIONS=766} [2024-06-28 01:52:44,774 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 185 predicate places. [2024-06-28 01:52:44,774 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 766 transitions, 14477 flow [2024-06-28 01:52:44,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:44,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:44,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:44,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:52:44,775 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:44,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:44,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2051984988, now seen corresponding path program 5 times [2024-06-28 01:52:44,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:44,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795898148] [2024-06-28 01:52:44,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:44,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:45,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:45,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795898148] [2024-06-28 01:52:45,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795898148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:45,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:45,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:45,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25990893] [2024-06-28 01:52:45,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:45,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:45,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:45,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:45,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:45,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:52:45,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 766 transitions, 14477 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:45,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:45,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:52:45,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:49,296 INFO L124 PetriNetUnfolderBase]: 10238/15042 cut-off events. [2024-06-28 01:52:49,297 INFO L125 PetriNetUnfolderBase]: For 444478/446437 co-relation queries the response was YES. [2024-06-28 01:52:49,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128300 conditions, 15042 events. 10238/15042 cut-off events. For 444478/446437 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 89254 event pairs, 2238 based on Foata normal form. 455/14905 useless extension candidates. Maximal degree in co-relation 128182. Up to 13192 conditions per place. [2024-06-28 01:52:49,499 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 570 selfloop transitions, 238 changer transitions 0/867 dead transitions. [2024-06-28 01:52:49,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 867 transitions, 17011 flow [2024-06-28 01:52:49,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:52:49,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:52:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 01:52:49,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-06-28 01:52:49,501 INFO L175 Difference]: Start difference. First operand has 237 places, 766 transitions, 14477 flow. Second operand 9 states and 210 transitions. [2024-06-28 01:52:49,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 867 transitions, 17011 flow [2024-06-28 01:52:50,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 867 transitions, 16602 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:52:50,843 INFO L231 Difference]: Finished difference. Result has 242 places, 819 transitions, 15437 flow [2024-06-28 01:52:50,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14068, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15437, PETRI_PLACES=242, PETRI_TRANSITIONS=819} [2024-06-28 01:52:50,845 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 190 predicate places. [2024-06-28 01:52:50,845 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 819 transitions, 15437 flow [2024-06-28 01:52:50,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:50,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:50,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:50,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:52:50,846 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:50,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1014488072, now seen corresponding path program 6 times [2024-06-28 01:52:50,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:50,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023070361] [2024-06-28 01:52:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:50,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:51,796 INFO 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 01:52:51,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:51,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023070361] [2024-06-28 01:52:51,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023070361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:51,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:51,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:51,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504633283] [2024-06-28 01:52:51,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:51,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:51,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:51,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:51,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:51,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:52:51,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 819 transitions, 15437 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:51,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:51,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:52:51,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:55,847 INFO L124 PetriNetUnfolderBase]: 10385/15263 cut-off events. [2024-06-28 01:52:55,848 INFO L125 PetriNetUnfolderBase]: For 473915/476147 co-relation queries the response was YES. [2024-06-28 01:52:55,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133118 conditions, 15263 events. 10385/15263 cut-off events. For 473915/476147 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 90694 event pairs, 2544 based on Foata normal form. 315/14969 useless extension candidates. Maximal degree in co-relation 132997. Up to 13397 conditions per place. [2024-06-28 01:52:56,078 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 562 selfloop transitions, 234 changer transitions 0/855 dead transitions. [2024-06-28 01:52:56,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 855 transitions, 17301 flow [2024-06-28 01:52:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:52:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:52:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:52:56,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2024-06-28 01:52:56,080 INFO L175 Difference]: Start difference. First operand has 242 places, 819 transitions, 15437 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:52:56,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 855 transitions, 17301 flow [2024-06-28 01:52:57,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 855 transitions, 17041 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 01:52:57,654 INFO L231 Difference]: Finished difference. Result has 244 places, 822 transitions, 15783 flow [2024-06-28 01:52:57,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15177, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15783, PETRI_PLACES=244, PETRI_TRANSITIONS=822} [2024-06-28 01:52:57,655 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 192 predicate places. [2024-06-28 01:52:57,655 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 822 transitions, 15783 flow [2024-06-28 01:52:57,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:57,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:57,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:57,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:52:57,656 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:57,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash -504550571, now seen corresponding path program 2 times [2024-06-28 01:52:57,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:57,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930596256] [2024-06-28 01:52:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:57,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:58,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:58,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930596256] [2024-06-28 01:52:58,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930596256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:58,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:58,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:58,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151608046] [2024-06-28 01:52:58,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:58,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:58,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:58,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:58,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:52:58,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 822 transitions, 15783 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 01:52:58,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:58,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:52:58,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:03,054 INFO L124 PetriNetUnfolderBase]: 10915/16056 cut-off events. [2024-06-28 01:53:03,062 INFO L125 PetriNetUnfolderBase]: For 489984/489990 co-relation queries the response was YES. [2024-06-28 01:53:03,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140272 conditions, 16056 events. 10915/16056 cut-off events. For 489984/489990 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 96834 event pairs, 2902 based on Foata normal form. 10/15813 useless extension candidates. Maximal degree in co-relation 140150. Up to 13377 conditions per place. [2024-06-28 01:53:03,264 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 593 selfloop transitions, 289 changer transitions 0/889 dead transitions. [2024-06-28 01:53:03,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 889 transitions, 18362 flow [2024-06-28 01:53:03,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:53:03,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:53:03,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 01:53:03,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048309178743962 [2024-06-28 01:53:03,266 INFO L175 Difference]: Start difference. First operand has 244 places, 822 transitions, 15783 flow. Second operand 9 states and 209 transitions. [2024-06-28 01:53:03,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 889 transitions, 18362 flow [2024-06-28 01:53:04,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 889 transitions, 17894 flow, removed 64 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:04,941 INFO L231 Difference]: Finished difference. Result has 250 places, 834 transitions, 16404 flow [2024-06-28 01:53:04,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15337, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16404, PETRI_PLACES=250, PETRI_TRANSITIONS=834} [2024-06-28 01:53:04,942 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 198 predicate places. [2024-06-28 01:53:04,942 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 834 transitions, 16404 flow [2024-06-28 01:53:04,943 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 01:53:04,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:04,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:04,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:53:04,943 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:04,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:04,944 INFO L85 PathProgramCache]: Analyzing trace with hash -385540486, now seen corresponding path program 7 times [2024-06-28 01:53:04,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:04,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129588126] [2024-06-28 01:53:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:04,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:05,825 INFO 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 01:53:05,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:05,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129588126] [2024-06-28 01:53:05,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129588126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:05,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:05,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:05,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560081962] [2024-06-28 01:53:05,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:05,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:05,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:05,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:05,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:05,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-28 01:53:05,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 834 transitions, 16404 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:05,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:05,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-28 01:53:05,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:09,642 INFO L124 PetriNetUnfolderBase]: 10185/14955 cut-off events. [2024-06-28 01:53:09,642 INFO L125 PetriNetUnfolderBase]: For 469608/472217 co-relation queries the response was YES. [2024-06-28 01:53:09,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133461 conditions, 14955 events. 10185/14955 cut-off events. For 469608/472217 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 88251 event pairs, 1668 based on Foata normal form. 272/14578 useless extension candidates. Maximal degree in co-relation 133337. Up to 12845 conditions per place. [2024-06-28 01:53:09,847 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 517 selfloop transitions, 292 changer transitions 0/870 dead transitions. [2024-06-28 01:53:09,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 870 transitions, 18310 flow [2024-06-28 01:53:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:53:09,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:53:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 01:53:09,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093167701863354 [2024-06-28 01:53:09,849 INFO L175 Difference]: Start difference. First operand has 250 places, 834 transitions, 16404 flow. Second operand 7 states and 164 transitions. [2024-06-28 01:53:09,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 870 transitions, 18310 flow [2024-06-28 01:53:11,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 870 transitions, 17792 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-28 01:53:11,656 INFO L231 Difference]: Finished difference. Result has 252 places, 837 transitions, 16593 flow [2024-06-28 01:53:11,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15886, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=289, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16593, PETRI_PLACES=252, PETRI_TRANSITIONS=837} [2024-06-28 01:53:11,657 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 200 predicate places. [2024-06-28 01:53:11,657 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 837 transitions, 16593 flow [2024-06-28 01:53:11,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:11,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:11,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:11,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:53:11,658 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:11,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:11,658 INFO L85 PathProgramCache]: Analyzing trace with hash -385325005, now seen corresponding path program 1 times [2024-06-28 01:53:11,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:11,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798108270] [2024-06-28 01:53:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:11,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:12,520 INFO 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 01:53:12,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:12,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798108270] [2024-06-28 01:53:12,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798108270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:12,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:12,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:12,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156541115] [2024-06-28 01:53:12,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:12,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:12,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:12,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:12,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:12,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-28 01:53:12,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 837 transitions, 16593 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 01:53:12,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:12,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-28 01:53:12,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand