./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe002_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/safe002_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/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe002_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 01:52:07,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:52:07,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:52:07,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:52:07,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:52:07,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:52:07,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:52:07,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:52:07,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:52:07,711 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:52:07,711 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:52:07,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:52:07,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:52:07,712 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:52:07,713 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:52:07,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:52:07,713 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:52:07,714 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:52:07,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:52:07,714 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:52:07,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:52:07,715 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:52:07,715 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:52:07,715 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:52:07,716 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:52:07,716 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:52:07,716 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:52:07,716 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:52:07,717 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:52:07,717 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:52:07,717 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:52:07,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:52:07,718 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:52:07,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:52:07,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:52:07,719 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:52:07,719 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:52:07,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:52:07,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:52:07,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:52:07,720 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:52:07,720 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:52:07,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:52:07,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:52:07,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:52:07,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:52:07,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:52:07,924 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:52:07,924 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:52:07,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 01:52:08,159 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:52:08,160 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:52:08,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-06-28 01:52:09,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:52:09,462 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:52:09,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-06-28 01:52:09,483 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7221d6ab3/041141a839bc4d04a4704f42b236bcc1/FLAG2ec157761 [2024-06-28 01:52:09,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7221d6ab3/041141a839bc4d04a4704f42b236bcc1 [2024-06-28 01:52:09,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:52:09,795 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:52:09,796 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:52:09,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:52:09,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:52:09,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:52:08" (1/2) ... [2024-06-28 01:52:09,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96c04d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:52:09, skipping insertion in model container [2024-06-28 01:52:09,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:52:08" (1/2) ... [2024-06-28 01:52:09,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f5e10a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:52:09, skipping insertion in model container [2024-06-28 01:52:09,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:52:09" (2/2) ... [2024-06-28 01:52:09,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96c04d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:09, skipping insertion in model container [2024-06-28 01:52:09,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:52:09" (2/2) ... [2024-06-28 01:52:09,803 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:52:09,937 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:52:09,938 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$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) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:52:09,938 INFO L97 edCorrectnessWitness]: Location invariant before [L832-L832] (((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! 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$read_delayed_var == 0) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:52:09,938 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && x$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) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:52:09,938 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:52:09,938 INFO L106 edCorrectnessWitness]: ghost_update [L830-L830] multithreaded = 1; [2024-06-28 01:52:09,964 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:52:10,110 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/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i[1019,1032] [2024-06-28 01:52:10,276 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:52:10,283 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:52:10,317 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i[1019,1032] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:52:10,409 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:52:10,446 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:52:10,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10 WrapperNode [2024-06-28 01:52:10,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:52:10,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:52:10,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:52:10,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:52:10,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,507 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-28 01:52:10,513 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:52:10,514 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:52:10,514 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:52:10,514 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:52:10,523 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,535 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,554 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 01:52:10,554 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,554 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:52:10,568 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:52:10,568 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:52:10,569 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:52:10,569 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (1/1) ... [2024-06-28 01:52:10,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:52:10,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:52:10,626 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 01:52:10,645 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 01:52:10,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:52:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:52:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:52:10,658 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:52:10,658 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:52:10,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:52:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:52:10,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:52:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:52:10,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:52:10,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:52:10,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:52:10,661 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 01:52:10,797 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:52:10,800 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:52:11,055 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:52:11,055 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:52:11,153 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:52:11,153 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:52:11,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:52:11 BoogieIcfgContainer [2024-06-28 01:52:11,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:52:11,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:52:11,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:52:11,157 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:52:11,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:52:08" (1/4) ... [2024-06-28 01:52:11,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e68627 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:52:11, skipping insertion in model container [2024-06-28 01:52:11,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:52:09" (2/4) ... [2024-06-28 01:52:11,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e68627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:52:11, skipping insertion in model container [2024-06-28 01:52:11,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:52:10" (3/4) ... [2024-06-28 01:52:11,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54e68627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:52:11, skipping insertion in model container [2024-06-28 01:52:11,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:52:11" (4/4) ... [2024-06-28 01:52:11,160 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_power.opt_pso.oepc_pso.opt_rmo.opt.i [2024-06-28 01:52:11,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:52:11,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:52:11,173 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:52:11,223 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:52:11,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:52:11,278 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:52:11,279 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:52:11,281 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 74 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 01:52:11,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:52:11,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-28 01:52:11,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:52:11,302 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;@4ea2d412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:52:11,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:52:11,308 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:52:11,308 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:52:11,308 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:52:11,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:11,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:52:11,309 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 01:52:11,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:11,315 INFO L85 PathProgramCache]: Analyzing trace with hash 345034173, now seen corresponding path program 1 times [2024-06-28 01:52:11,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:11,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335489986] [2024-06-28 01:52:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:11,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:12,268 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 01:52:12,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:12,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335489986] [2024-06-28 01:52:12,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335489986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:12,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:12,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:52:12,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576531732] [2024-06-28 01:52:12,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:12,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:52:12,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:12,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:52:12,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:52:12,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-28 01:52:12,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:12,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:12,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-28 01:52:12,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:12,850 INFO L124 PetriNetUnfolderBase]: 2396/3521 cut-off events. [2024-06-28 01:52:12,854 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 01:52:12,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7091 conditions, 3521 events. 2396/3521 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 19186 event pairs, 986 based on Foata normal form. 142/3471 useless extension candidates. Maximal degree in co-relation 7079. Up to 3464 conditions per place. [2024-06-28 01:52:12,875 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 40 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:52:12,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 221 flow [2024-06-28 01:52:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:52:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:52:12,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-28 01:52:12,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7101449275362319 [2024-06-28 01:52:12,888 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 98 transitions. [2024-06-28 01:52:12,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 221 flow [2024-06-28 01:52:12,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:52:12,895 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-28 01:52:12,897 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 01:52:12,900 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:52:12,900 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-28 01:52:12,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:12,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:12,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:12,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:52:12,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:12,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:12,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1056695211, now seen corresponding path program 1 times [2024-06-28 01:52:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:12,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628467772] [2024-06-28 01:52:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:12,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:13,028 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 01:52:13,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:13,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628467772] [2024-06-28 01:52:13,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628467772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:13,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:13,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:52:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243183059] [2024-06-28 01:52:13,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:13,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:52:13,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:13,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:52:13,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:52:13,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 46 [2024-06-28 01:52:13,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:13,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:13,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 46 [2024-06-28 01:52:13,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:13,221 INFO L124 PetriNetUnfolderBase]: 735/1552 cut-off events. [2024-06-28 01:52:13,221 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-06-28 01:52:13,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2931 conditions, 1552 events. 735/1552 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10525 event pairs, 282 based on Foata normal form. 0/1461 useless extension candidates. Maximal degree in co-relation 2919. Up to 948 conditions per place. [2024-06-28 01:52:13,230 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 30 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-06-28 01:52:13,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 210 flow [2024-06-28 01:52:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:52:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:52:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-28 01:52:13,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7608695652173914 [2024-06-28 01:52:13,234 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 3 states and 105 transitions. [2024-06-28 01:52:13,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 210 flow [2024-06-28 01:52:13,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:52:13,236 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 120 flow [2024-06-28 01:52:13,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-28 01:52:13,237 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:52:13,238 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 120 flow [2024-06-28 01:52:13,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:13,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:13,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:13,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:52:13,241 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:13,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash 847017515, now seen corresponding path program 1 times [2024-06-28 01:52:13,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:13,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476272639] [2024-06-28 01:52:13,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:13,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:14,334 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 01:52:14,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:14,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476272639] [2024-06-28 01:52:14,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476272639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:14,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:14,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:52:14,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246635304] [2024-06-28 01:52:14,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:14,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:52:14,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:14,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:52:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:52:14,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-28 01:52:14,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 120 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:14,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:14,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-28 01:52:14,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:14,895 INFO L124 PetriNetUnfolderBase]: 2591/4379 cut-off events. [2024-06-28 01:52:14,895 INFO L125 PetriNetUnfolderBase]: For 1012/1026 co-relation queries the response was YES. [2024-06-28 01:52:14,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9204 conditions, 4379 events. 2591/4379 cut-off events. For 1012/1026 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 27472 event pairs, 1277 based on Foata normal form. 13/4240 useless extension candidates. Maximal degree in co-relation 9191. Up to 3663 conditions per place. [2024-06-28 01:52:14,915 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 46 selfloop transitions, 6 changer transitions 3/67 dead transitions. [2024-06-28 01:52:14,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 286 flow [2024-06-28 01:52:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:52:14,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:52:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-28 01:52:14,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-06-28 01:52:14,917 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 120 flow. Second operand 4 states and 118 transitions. [2024-06-28 01:52:14,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 286 flow [2024-06-28 01:52:14,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:14,919 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 139 flow [2024-06-28 01:52:14,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-06-28 01:52:14,920 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-06-28 01:52:14,920 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 139 flow [2024-06-28 01:52:14,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:14,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:14,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:14,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:52:14,921 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:14,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1871557810, now seen corresponding path program 1 times [2024-06-28 01:52:14,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:14,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611002602] [2024-06-28 01:52:14,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:14,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:15,455 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 01:52:15,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611002602] [2024-06-28 01:52:15,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611002602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:15,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:15,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:52:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403375353] [2024-06-28 01:52:15,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:15,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:52:15,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:15,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:52:15,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:52:15,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:52:15,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:15,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:15,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:52:15,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:15,959 INFO L124 PetriNetUnfolderBase]: 2049/3483 cut-off events. [2024-06-28 01:52:15,959 INFO L125 PetriNetUnfolderBase]: For 1340/1344 co-relation queries the response was YES. [2024-06-28 01:52:15,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7742 conditions, 3483 events. 2049/3483 cut-off events. For 1340/1344 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 21498 event pairs, 973 based on Foata normal form. 6/3365 useless extension candidates. Maximal degree in co-relation 7727. Up to 2957 conditions per place. [2024-06-28 01:52:15,978 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 49 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-28 01:52:15,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 325 flow [2024-06-28 01:52:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:52:15,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:52:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 01:52:15,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:52:15,982 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 139 flow. Second operand 5 states and 125 transitions. [2024-06-28 01:52:15,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 325 flow [2024-06-28 01:52:15,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 69 transitions, 308 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:15,984 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 195 flow [2024-06-28 01:52:15,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 01:52:15,986 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-28 01:52:15,986 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 195 flow [2024-06-28 01:52:15,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:15,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:15,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:15,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:52:15,987 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 01:52:15,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:15,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2111248669, now seen corresponding path program 1 times [2024-06-28 01:52:15,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:15,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358965168] [2024-06-28 01:52:15,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:15,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:16,560 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 01:52:16,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:16,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358965168] [2024-06-28 01:52:16,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358965168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:16,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:16,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:52:16,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850303341] [2024-06-28 01:52:16,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:16,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:52:16,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:16,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:52:16,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:52:16,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:16,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:16,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:16,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:16,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:17,164 INFO L124 PetriNetUnfolderBase]: 3144/5263 cut-off events. [2024-06-28 01:52:17,165 INFO L125 PetriNetUnfolderBase]: For 3451/3451 co-relation queries the response was YES. [2024-06-28 01:52:17,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12862 conditions, 5263 events. 3144/5263 cut-off events. For 3451/3451 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 33124 event pairs, 1394 based on Foata normal form. 2/5082 useless extension candidates. Maximal degree in co-relation 12844. Up to 4500 conditions per place. [2024-06-28 01:52:17,191 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 65 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-28 01:52:17,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 443 flow [2024-06-28 01:52:17,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:52:17,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:52:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:52:17,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2024-06-28 01:52:17,193 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 195 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:52:17,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 443 flow [2024-06-28 01:52:17,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 86 transitions, 426 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:17,197 INFO L231 Difference]: Finished difference. Result has 62 places, 61 transitions, 263 flow [2024-06-28 01:52:17,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=62, PETRI_TRANSITIONS=61} [2024-06-28 01:52:17,198 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-06-28 01:52:17,198 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 61 transitions, 263 flow [2024-06-28 01:52:17,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:17,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:17,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:17,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:52:17,199 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 01:52:17,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:17,199 INFO L85 PathProgramCache]: Analyzing trace with hash -774847233, now seen corresponding path program 1 times [2024-06-28 01:52:17,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:17,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762927902] [2024-06-28 01:52:17,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:17,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:18,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:18,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:18,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762927902] [2024-06-28 01:52:18,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762927902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:18,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:18,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:18,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148329718] [2024-06-28 01:52:18,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:18,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:18,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:18,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:18,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:18,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:18,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 61 transitions, 263 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:18,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:18,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:18,735 INFO L124 PetriNetUnfolderBase]: 3144/5257 cut-off events. [2024-06-28 01:52:18,735 INFO L125 PetriNetUnfolderBase]: For 4757/4757 co-relation queries the response was YES. [2024-06-28 01:52:18,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13747 conditions, 5257 events. 3144/5257 cut-off events. For 4757/4757 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 33124 event pairs, 1355 based on Foata normal form. 2/5078 useless extension candidates. Maximal degree in co-relation 13725. Up to 4483 conditions per place. [2024-06-28 01:52:18,756 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 73 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-28 01:52:18,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 531 flow [2024-06-28 01:52:18,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:52:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:52:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:52:18,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031055900621118 [2024-06-28 01:52:18,758 INFO L175 Difference]: Start difference. First operand has 62 places, 61 transitions, 263 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:52:18,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 531 flow [2024-06-28 01:52:18,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:52:18,762 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 315 flow [2024-06-28 01:52:18,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-28 01:52:18,763 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-06-28 01:52:18,763 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 315 flow [2024-06-28 01:52:18,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:18,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:18,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:18,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:52:18,764 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 01:52:18,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:18,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1863814521, now seen corresponding path program 1 times [2024-06-28 01:52:18,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:18,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77865670] [2024-06-28 01:52:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:18,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:19,581 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 01:52:19,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:19,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77865670] [2024-06-28 01:52:19,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77865670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:19,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:19,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:19,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425660547] [2024-06-28 01:52:19,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:19,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:19,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:19,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:19,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:19,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:52:19,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 315 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:19,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:19,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:52:19,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:20,444 INFO L124 PetriNetUnfolderBase]: 3116/4974 cut-off events. [2024-06-28 01:52:20,445 INFO L125 PetriNetUnfolderBase]: For 7185/7247 co-relation queries the response was YES. [2024-06-28 01:52:20,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14558 conditions, 4974 events. 3116/4974 cut-off events. For 7185/7247 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 29746 event pairs, 1290 based on Foata normal form. 23/4803 useless extension candidates. Maximal degree in co-relation 14533. Up to 4374 conditions per place. [2024-06-28 01:52:20,471 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 73 selfloop transitions, 26 changer transitions 0/113 dead transitions. [2024-06-28 01:52:20,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 113 transitions, 696 flow [2024-06-28 01:52:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:52:20,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:52:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:52:20,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-28 01:52:20,473 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 315 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:52:20,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 113 transitions, 696 flow [2024-06-28 01:52:20,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 113 transitions, 664 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:52:20,479 INFO L231 Difference]: Finished difference. Result has 74 places, 83 transitions, 494 flow [2024-06-28 01:52:20,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=494, PETRI_PLACES=74, PETRI_TRANSITIONS=83} [2024-06-28 01:52:20,480 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-06-28 01:52:20,480 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 83 transitions, 494 flow [2024-06-28 01:52:20,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:20,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:20,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:20,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:52:20,481 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 01:52:20,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1259017407, now seen corresponding path program 2 times [2024-06-28 01:52:20,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:20,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755659208] [2024-06-28 01:52:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:20,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:21,254 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 01:52:21,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:21,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755659208] [2024-06-28 01:52:21,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755659208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:21,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:21,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:21,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730648618] [2024-06-28 01:52:21,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:21,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:21,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:21,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:52:21,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 83 transitions, 494 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:21,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:21,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:52:21,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:21,941 INFO L124 PetriNetUnfolderBase]: 3145/5158 cut-off events. [2024-06-28 01:52:21,942 INFO L125 PetriNetUnfolderBase]: For 11912/11996 co-relation queries the response was YES. [2024-06-28 01:52:21,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16579 conditions, 5158 events. 3145/5158 cut-off events. For 11912/11996 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 31760 event pairs, 1133 based on Foata normal form. 30/4929 useless extension candidates. Maximal degree in co-relation 16550. Up to 4277 conditions per place. [2024-06-28 01:52:21,975 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 63 selfloop transitions, 32 changer transitions 0/109 dead transitions. [2024-06-28 01:52:21,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 109 transitions, 800 flow [2024-06-28 01:52:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:52:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:52:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 01:52:21,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5391304347826087 [2024-06-28 01:52:21,979 INFO L175 Difference]: Start difference. First operand has 74 places, 83 transitions, 494 flow. Second operand 5 states and 124 transitions. [2024-06-28 01:52:21,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 109 transitions, 800 flow [2024-06-28 01:52:21,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 109 transitions, 776 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-28 01:52:21,987 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 645 flow [2024-06-28 01:52:21,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=645, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2024-06-28 01:52:21,990 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-06-28 01:52:21,990 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 645 flow [2024-06-28 01:52:21,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:21,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:21,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:21,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:52:21,991 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 01:52:21,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:21,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1267066774, now seen corresponding path program 1 times [2024-06-28 01:52:21,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:21,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623994558] [2024-06-28 01:52:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:21,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:22,591 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 01:52:22,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:22,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623994558] [2024-06-28 01:52:22,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623994558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:22,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:22,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898061401] [2024-06-28 01:52:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:22,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:22,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:22,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:22,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 645 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:22,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:22,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:22,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:23,429 INFO L124 PetriNetUnfolderBase]: 3842/6301 cut-off events. [2024-06-28 01:52:23,430 INFO L125 PetriNetUnfolderBase]: For 17268/17268 co-relation queries the response was YES. [2024-06-28 01:52:23,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21471 conditions, 6301 events. 3842/6301 cut-off events. For 17268/17268 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 39250 event pairs, 1277 based on Foata normal form. 13/6107 useless extension candidates. Maximal degree in co-relation 21438. Up to 4933 conditions per place. [2024-06-28 01:52:23,463 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 97 selfloop transitions, 38 changer transitions 0/144 dead transitions. [2024-06-28 01:52:23,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 144 transitions, 1176 flow [2024-06-28 01:52:23,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:52:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:52:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:52:23,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-28 01:52:23,465 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 645 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:52:23,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 144 transitions, 1176 flow [2024-06-28 01:52:23,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 144 transitions, 1088 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:23,484 INFO L231 Difference]: Finished difference. Result has 86 places, 109 transitions, 839 flow [2024-06-28 01:52:23,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=839, PETRI_PLACES=86, PETRI_TRANSITIONS=109} [2024-06-28 01:52:23,484 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2024-06-28 01:52:23,484 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 109 transitions, 839 flow [2024-06-28 01:52:23,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:23,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:23,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:23,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:52:23,485 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 01:52:23,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1749264150, now seen corresponding path program 2 times [2024-06-28 01:52:23,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:23,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473602959] [2024-06-28 01:52:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:23,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:24,072 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 01:52:24,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:24,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473602959] [2024-06-28 01:52:24,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473602959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:24,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:24,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:24,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684107387] [2024-06-28 01:52:24,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:24,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:24,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:24,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:24,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:24,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:24,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 109 transitions, 839 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:24,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:24,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:24,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:25,082 INFO L124 PetriNetUnfolderBase]: 4192/6781 cut-off events. [2024-06-28 01:52:25,082 INFO L125 PetriNetUnfolderBase]: For 19739/19739 co-relation queries the response was YES. [2024-06-28 01:52:25,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24977 conditions, 6781 events. 4192/6781 cut-off events. For 19739/19739 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 41979 event pairs, 1301 based on Foata normal form. 10/6577 useless extension candidates. Maximal degree in co-relation 24940. Up to 5435 conditions per place. [2024-06-28 01:52:25,128 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 126 selfloop transitions, 34 changer transitions 0/169 dead transitions. [2024-06-28 01:52:25,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 169 transitions, 1448 flow [2024-06-28 01:52:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:52:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:52:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:52:25,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-28 01:52:25,130 INFO L175 Difference]: Start difference. First operand has 86 places, 109 transitions, 839 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:52:25,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 169 transitions, 1448 flow [2024-06-28 01:52:25,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 169 transitions, 1404 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:25,156 INFO L231 Difference]: Finished difference. Result has 94 places, 123 transitions, 1015 flow [2024-06-28 01:52:25,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1015, PETRI_PLACES=94, PETRI_TRANSITIONS=123} [2024-06-28 01:52:25,158 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 42 predicate places. [2024-06-28 01:52:25,158 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 123 transitions, 1015 flow [2024-06-28 01:52:25,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:25,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:25,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:25,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:52:25,159 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 01:52:25,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:25,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1749531060, now seen corresponding path program 3 times [2024-06-28 01:52:25,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:25,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386663420] [2024-06-28 01:52:25,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:25,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:25,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:25,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386663420] [2024-06-28 01:52:25,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386663420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:25,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:25,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:52:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807687601] [2024-06-28 01:52:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:25,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:52:25,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:52:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:52:25,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:25,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 123 transitions, 1015 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:25,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:25,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:25,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:26,646 INFO L124 PetriNetUnfolderBase]: 4215/6877 cut-off events. [2024-06-28 01:52:26,646 INFO L125 PetriNetUnfolderBase]: For 26451/26451 co-relation queries the response was YES. [2024-06-28 01:52:26,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27567 conditions, 6877 events. 4215/6877 cut-off events. For 26451/26451 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 43091 event pairs, 1371 based on Foata normal form. 4/6658 useless extension candidates. Maximal degree in co-relation 27526. Up to 5742 conditions per place. [2024-06-28 01:52:26,701 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 135 selfloop transitions, 33 changer transitions 0/177 dead transitions. [2024-06-28 01:52:26,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 177 transitions, 1686 flow [2024-06-28 01:52:26,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:52:26,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:52:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:52:26,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:52:26,703 INFO L175 Difference]: Start difference. First operand has 94 places, 123 transitions, 1015 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:52:26,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 177 transitions, 1686 flow [2024-06-28 01:52:26,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 177 transitions, 1602 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 01:52:26,728 INFO L231 Difference]: Finished difference. Result has 101 places, 142 transitions, 1293 flow [2024-06-28 01:52:26,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1293, PETRI_PLACES=101, PETRI_TRANSITIONS=142} [2024-06-28 01:52:26,729 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 49 predicate places. [2024-06-28 01:52:26,729 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 142 transitions, 1293 flow [2024-06-28 01:52:26,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:26,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:26,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:26,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:52:26,730 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 01:52:26,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:26,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1749540980, now seen corresponding path program 1 times [2024-06-28 01:52:26,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:26,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204224196] [2024-06-28 01:52:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:26,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:27,557 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 01:52:27,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:27,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204224196] [2024-06-28 01:52:27,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204224196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:27,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:27,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:27,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646914096] [2024-06-28 01:52:27,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:27,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:27,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:27,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:27,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:27,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:27,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 142 transitions, 1293 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:27,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:27,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:27,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:28,508 INFO L124 PetriNetUnfolderBase]: 4207/6804 cut-off events. [2024-06-28 01:52:28,508 INFO L125 PetriNetUnfolderBase]: For 30926/30926 co-relation queries the response was YES. [2024-06-28 01:52:28,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28590 conditions, 6804 events. 4207/6804 cut-off events. For 30926/30926 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 42035 event pairs, 1971 based on Foata normal form. 4/6627 useless extension candidates. Maximal degree in co-relation 28544. Up to 5885 conditions per place. [2024-06-28 01:52:28,558 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 160 selfloop transitions, 30 changer transitions 0/199 dead transitions. [2024-06-28 01:52:28,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 199 transitions, 1969 flow [2024-06-28 01:52:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:52:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:52:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 01:52:28,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-28 01:52:28,560 INFO L175 Difference]: Start difference. First operand has 101 places, 142 transitions, 1293 flow. Second operand 9 states and 201 transitions. [2024-06-28 01:52:28,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 199 transitions, 1969 flow [2024-06-28 01:52:28,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 199 transitions, 1921 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-28 01:52:28,595 INFO L231 Difference]: Finished difference. Result has 113 places, 156 transitions, 1515 flow [2024-06-28 01:52:28,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1515, PETRI_PLACES=113, PETRI_TRANSITIONS=156} [2024-06-28 01:52:28,596 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2024-06-28 01:52:28,596 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 156 transitions, 1515 flow [2024-06-28 01:52:28,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:28,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:28,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:28,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:52:28,597 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 01:52:28,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:28,597 INFO L85 PathProgramCache]: Analyzing trace with hash 305473480, now seen corresponding path program 1 times [2024-06-28 01:52:28,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:28,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825908428] [2024-06-28 01:52:28,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:28,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:29,444 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 01:52:29,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:29,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825908428] [2024-06-28 01:52:29,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825908428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:29,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:29,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:29,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93436533] [2024-06-28 01:52:29,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:29,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:29,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:29,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:29,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:29,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:29,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 156 transitions, 1515 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:29,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:29,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:29,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:30,713 INFO L124 PetriNetUnfolderBase]: 4736/7743 cut-off events. [2024-06-28 01:52:30,713 INFO L125 PetriNetUnfolderBase]: For 41054/41056 co-relation queries the response was YES. [2024-06-28 01:52:30,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33791 conditions, 7743 events. 4736/7743 cut-off events. For 41054/41056 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 49716 event pairs, 1773 based on Foata normal form. 12/7518 useless extension candidates. Maximal degree in co-relation 33738. Up to 6108 conditions per place. [2024-06-28 01:52:30,773 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 201 selfloop transitions, 78 changer transitions 0/288 dead transitions. [2024-06-28 01:52:30,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 288 transitions, 2934 flow [2024-06-28 01:52:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:30,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 296 transitions. [2024-06-28 01:52:30,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-28 01:52:30,775 INFO L175 Difference]: Start difference. First operand has 113 places, 156 transitions, 1515 flow. Second operand 12 states and 296 transitions. [2024-06-28 01:52:30,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 288 transitions, 2934 flow [2024-06-28 01:52:30,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 288 transitions, 2834 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:30,846 INFO L231 Difference]: Finished difference. Result has 128 places, 202 transitions, 2115 flow [2024-06-28 01:52:30,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2115, PETRI_PLACES=128, PETRI_TRANSITIONS=202} [2024-06-28 01:52:30,846 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 76 predicate places. [2024-06-28 01:52:30,847 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 202 transitions, 2115 flow [2024-06-28 01:52:30,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:30,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:30,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:30,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:52:30,847 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 01:52:30,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1439094226, now seen corresponding path program 2 times [2024-06-28 01:52:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:30,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26000537] [2024-06-28 01:52:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:30,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:31,724 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 01:52:31,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:31,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26000537] [2024-06-28 01:52:31,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26000537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:31,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:31,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:31,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971133508] [2024-06-28 01:52:31,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:31,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:31,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:31,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:31,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:31,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:31,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 202 transitions, 2115 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:31,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:31,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:31,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:32,897 INFO L124 PetriNetUnfolderBase]: 4974/7848 cut-off events. [2024-06-28 01:52:32,897 INFO L125 PetriNetUnfolderBase]: For 55930/55930 co-relation queries the response was YES. [2024-06-28 01:52:32,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39378 conditions, 7848 events. 4974/7848 cut-off events. For 55930/55930 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 48365 event pairs, 1193 based on Foata normal form. 5/7615 useless extension candidates. Maximal degree in co-relation 39318. Up to 5979 conditions per place. [2024-06-28 01:52:32,962 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 162 selfloop transitions, 97 changer transitions 0/268 dead transitions. [2024-06-28 01:52:32,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 268 transitions, 3202 flow [2024-06-28 01:52:32,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:52:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:52:32,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:52:32,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546583850931677 [2024-06-28 01:52:32,964 INFO L175 Difference]: Start difference. First operand has 128 places, 202 transitions, 2115 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:52:32,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 268 transitions, 3202 flow [2024-06-28 01:52:33,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 268 transitions, 3031 flow, removed 66 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:33,056 INFO L231 Difference]: Finished difference. Result has 135 places, 230 transitions, 2643 flow [2024-06-28 01:52:33,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2643, PETRI_PLACES=135, PETRI_TRANSITIONS=230} [2024-06-28 01:52:33,057 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 83 predicate places. [2024-06-28 01:52:33,057 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 230 transitions, 2643 flow [2024-06-28 01:52:33,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:33,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:33,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:33,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:52:33,058 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 01:52:33,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash 375015056, now seen corresponding path program 1 times [2024-06-28 01:52:33,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:33,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558913151] [2024-06-28 01:52:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:33,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:33,855 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 01:52:33,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:33,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558913151] [2024-06-28 01:52:33,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558913151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:33,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:33,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:33,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824292408] [2024-06-28 01:52:33,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:33,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:33,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:33,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:33,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:33,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:33,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 230 transitions, 2643 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:33,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:33,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:33,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:35,351 INFO L124 PetriNetUnfolderBase]: 5257/8172 cut-off events. [2024-06-28 01:52:35,351 INFO L125 PetriNetUnfolderBase]: For 72950/72956 co-relation queries the response was YES. [2024-06-28 01:52:35,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45545 conditions, 8172 events. 5257/8172 cut-off events. For 72950/72956 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 49480 event pairs, 1330 based on Foata normal form. 12/8016 useless extension candidates. Maximal degree in co-relation 45481. Up to 6746 conditions per place. [2024-06-28 01:52:35,411 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 219 selfloop transitions, 82 changer transitions 0/310 dead transitions. [2024-06-28 01:52:35,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 310 transitions, 3974 flow [2024-06-28 01:52:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:52:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:52:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:52:35,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516304347826086 [2024-06-28 01:52:35,413 INFO L175 Difference]: Start difference. First operand has 135 places, 230 transitions, 2643 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:52:35,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 310 transitions, 3974 flow [2024-06-28 01:52:35,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 310 transitions, 3892 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:35,538 INFO L231 Difference]: Finished difference. Result has 144 places, 263 transitions, 3319 flow [2024-06-28 01:52:35,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3319, PETRI_PLACES=144, PETRI_TRANSITIONS=263} [2024-06-28 01:52:35,539 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 92 predicate places. [2024-06-28 01:52:35,539 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 263 transitions, 3319 flow [2024-06-28 01:52:35,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:35,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:35,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:35,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:52:35,539 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 01:52:35,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1795135020, now seen corresponding path program 2 times [2024-06-28 01:52:35,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:35,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744700705] [2024-06-28 01:52:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:35,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:35,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:36,336 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 01:52:36,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744700705] [2024-06-28 01:52:36,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744700705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:36,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:36,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:36,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600675149] [2024-06-28 01:52:36,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:36,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:36,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:36,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:36,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 263 transitions, 3319 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:36,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:36,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:36,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:37,807 INFO L124 PetriNetUnfolderBase]: 5413/8569 cut-off events. [2024-06-28 01:52:37,814 INFO L125 PetriNetUnfolderBase]: For 90179/90191 co-relation queries the response was YES. [2024-06-28 01:52:37,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50605 conditions, 8569 events. 5413/8569 cut-off events. For 90179/90191 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 53598 event pairs, 1399 based on Foata normal form. 18/8348 useless extension candidates. Maximal degree in co-relation 50536. Up to 6983 conditions per place. [2024-06-28 01:52:37,896 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 258 selfloop transitions, 56 changer transitions 0/323 dead transitions. [2024-06-28 01:52:37,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 323 transitions, 4322 flow [2024-06-28 01:52:37,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:52:37,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:52:37,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:52:37,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5410628019323671 [2024-06-28 01:52:37,898 INFO L175 Difference]: Start difference. First operand has 144 places, 263 transitions, 3319 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:52:37,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 323 transitions, 4322 flow [2024-06-28 01:52:38,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 323 transitions, 4188 flow, removed 60 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:38,080 INFO L231 Difference]: Finished difference. Result has 151 places, 269 transitions, 3417 flow [2024-06-28 01:52:38,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3189, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3417, PETRI_PLACES=151, PETRI_TRANSITIONS=269} [2024-06-28 01:52:38,081 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 99 predicate places. [2024-06-28 01:52:38,082 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 269 transitions, 3417 flow [2024-06-28 01:52:38,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:38,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:38,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:38,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:52:38,083 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 01:52:38,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:38,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1599110592, now seen corresponding path program 3 times [2024-06-28 01:52:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219872433] [2024-06-28 01:52:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:38,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:38,994 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 01:52:38,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:38,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219872433] [2024-06-28 01:52:38,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219872433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:38,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:38,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:38,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942355845] [2024-06-28 01:52:38,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:38,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:38,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:38,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:38,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:39,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:39,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 269 transitions, 3417 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:39,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:39,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:39,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:40,434 INFO L124 PetriNetUnfolderBase]: 5459/8655 cut-off events. [2024-06-28 01:52:40,434 INFO L125 PetriNetUnfolderBase]: For 92982/92982 co-relation queries the response was YES. [2024-06-28 01:52:40,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52265 conditions, 8655 events. 5459/8655 cut-off events. For 92982/92982 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 54208 event pairs, 1302 based on Foata normal form. 4/8398 useless extension candidates. Maximal degree in co-relation 52194. Up to 7246 conditions per place. [2024-06-28 01:52:40,505 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 267 selfloop transitions, 68 changer transitions 0/344 dead transitions. [2024-06-28 01:52:40,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 344 transitions, 4721 flow [2024-06-28 01:52:40,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:52:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:52:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:52:40,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-06-28 01:52:40,515 INFO L175 Difference]: Start difference. First operand has 151 places, 269 transitions, 3417 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:52:40,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 344 transitions, 4721 flow [2024-06-28 01:52:40,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 344 transitions, 4541 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 01:52:40,671 INFO L231 Difference]: Finished difference. Result has 155 places, 298 transitions, 3927 flow [2024-06-28 01:52:40,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3237, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3927, PETRI_PLACES=155, PETRI_TRANSITIONS=298} [2024-06-28 01:52:40,672 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 103 predicate places. [2024-06-28 01:52:40,672 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 298 transitions, 3927 flow [2024-06-28 01:52:40,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:40,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:40,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:40,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:52:40,673 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 01:52:40,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:40,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1598813922, now seen corresponding path program 4 times [2024-06-28 01:52:40,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:40,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939972604] [2024-06-28 01:52:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:40,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:41,461 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 01:52:41,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:41,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939972604] [2024-06-28 01:52:41,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939972604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:41,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:41,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:41,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737932681] [2024-06-28 01:52:41,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:41,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:41,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:41,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:41,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:41,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:41,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 298 transitions, 3927 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:41,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:41,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:41,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:42,850 INFO L124 PetriNetUnfolderBase]: 5459/8553 cut-off events. [2024-06-28 01:52:42,850 INFO L125 PetriNetUnfolderBase]: For 101142/101154 co-relation queries the response was YES. [2024-06-28 01:52:42,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53149 conditions, 8553 events. 5459/8553 cut-off events. For 101142/101154 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 52438 event pairs, 1367 based on Foata normal form. 10/8373 useless extension candidates. Maximal degree in co-relation 53074. Up to 7421 conditions per place. [2024-06-28 01:52:42,946 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 295 selfloop transitions, 66 changer transitions 0/370 dead transitions. [2024-06-28 01:52:42,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 370 transitions, 5263 flow [2024-06-28 01:52:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:52:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:52:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:52:42,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-28 01:52:42,948 INFO L175 Difference]: Start difference. First operand has 155 places, 298 transitions, 3927 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:52:42,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 370 transitions, 5263 flow [2024-06-28 01:52:43,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 370 transitions, 5133 flow, removed 61 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:43,155 INFO L231 Difference]: Finished difference. Result has 165 places, 329 transitions, 4516 flow [2024-06-28 01:52:43,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4516, PETRI_PLACES=165, PETRI_TRANSITIONS=329} [2024-06-28 01:52:43,155 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 113 predicate places. [2024-06-28 01:52:43,156 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 329 transitions, 4516 flow [2024-06-28 01:52:43,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:43,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:43,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:43,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:52:43,156 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:52:43,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:43,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1199822367, now seen corresponding path program 1 times [2024-06-28 01:52:43,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:43,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149470247] [2024-06-28 01:52:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:43,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:43,694 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 01:52:43,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:43,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149470247] [2024-06-28 01:52:43,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149470247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:43,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:43,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:52:43,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536072400] [2024-06-28 01:52:43,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:43,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:52:43,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:43,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:52:43,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:52:43,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:43,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 329 transitions, 4516 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:43,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:43,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:43,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:45,280 INFO L124 PetriNetUnfolderBase]: 5435/8769 cut-off events. [2024-06-28 01:52:45,280 INFO L125 PetriNetUnfolderBase]: For 110007/110007 co-relation queries the response was YES. [2024-06-28 01:52:45,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54788 conditions, 8769 events. 5435/8769 cut-off events. For 110007/110007 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 56433 event pairs, 1475 based on Foata normal form. 8/8521 useless extension candidates. Maximal degree in co-relation 54706. Up to 7360 conditions per place. [2024-06-28 01:52:45,383 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 269 selfloop transitions, 67 changer transitions 0/345 dead transitions. [2024-06-28 01:52:45,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 345 transitions, 5278 flow [2024-06-28 01:52:45,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:52:45,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:52:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 01:52:45,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-06-28 01:52:45,385 INFO L175 Difference]: Start difference. First operand has 165 places, 329 transitions, 4516 flow. Second operand 5 states and 119 transitions. [2024-06-28 01:52:45,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 345 transitions, 5278 flow [2024-06-28 01:52:45,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 345 transitions, 5088 flow, removed 94 selfloop flow, removed 1 redundant places. [2024-06-28 01:52:45,681 INFO L231 Difference]: Finished difference. Result has 169 places, 329 transitions, 4492 flow [2024-06-28 01:52:45,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4326, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4492, PETRI_PLACES=169, PETRI_TRANSITIONS=329} [2024-06-28 01:52:45,682 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 117 predicate places. [2024-06-28 01:52:45,682 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 329 transitions, 4492 flow [2024-06-28 01:52:45,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:45,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:45,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:45,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:52:45,682 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 01:52:45,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:45,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1375834106, now seen corresponding path program 1 times [2024-06-28 01:52:45,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:45,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110709007] [2024-06-28 01:52:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:45,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:46,498 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 01:52:46,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:46,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110709007] [2024-06-28 01:52:46,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110709007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:46,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:46,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:46,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614173991] [2024-06-28 01:52:46,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:46,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:46,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:46,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:46,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:46,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:52:46,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 329 transitions, 4492 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:46,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:46,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:52:46,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:47,873 INFO L124 PetriNetUnfolderBase]: 5340/8420 cut-off events. [2024-06-28 01:52:47,874 INFO L125 PetriNetUnfolderBase]: For 112640/112957 co-relation queries the response was YES. [2024-06-28 01:52:47,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54315 conditions, 8420 events. 5340/8420 cut-off events. For 112640/112957 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 52700 event pairs, 1109 based on Foata normal form. 69/8113 useless extension candidates. Maximal degree in co-relation 54230. Up to 6832 conditions per place. [2024-06-28 01:52:47,971 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 223 selfloop transitions, 88 changer transitions 0/360 dead transitions. [2024-06-28 01:52:47,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 360 transitions, 5300 flow [2024-06-28 01:52:47,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:52:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:52:47,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:52:47,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-28 01:52:47,972 INFO L175 Difference]: Start difference. First operand has 169 places, 329 transitions, 4492 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:52:47,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 360 transitions, 5300 flow [2024-06-28 01:52:48,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 360 transitions, 5143 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:52:48,257 INFO L231 Difference]: Finished difference. Result has 170 places, 331 transitions, 4576 flow [2024-06-28 01:52:48,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4335, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4576, PETRI_PLACES=170, PETRI_TRANSITIONS=331} [2024-06-28 01:52:48,257 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 118 predicate places. [2024-06-28 01:52:48,257 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 331 transitions, 4576 flow [2024-06-28 01:52:48,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:48,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:48,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:48,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:52:48,258 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 01:52:48,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1378720826, now seen corresponding path program 2 times [2024-06-28 01:52:48,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:48,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797614932] [2024-06-28 01:52:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:48,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:49,131 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 01:52:49,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:49,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797614932] [2024-06-28 01:52:49,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797614932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:49,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:49,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:49,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984393874] [2024-06-28 01:52:49,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:49,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:49,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:49,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:49,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:49,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:52:49,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 331 transitions, 4576 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:49,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:49,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:52:49,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:50,617 INFO L124 PetriNetUnfolderBase]: 5513/8840 cut-off events. [2024-06-28 01:52:50,618 INFO L125 PetriNetUnfolderBase]: For 129926/130583 co-relation queries the response was YES. [2024-06-28 01:52:50,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57124 conditions, 8840 events. 5513/8840 cut-off events. For 129926/130583 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 56814 event pairs, 1561 based on Foata normal form. 181/8649 useless extension candidates. Maximal degree in co-relation 57039. Up to 7380 conditions per place. [2024-06-28 01:52:50,718 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 272 selfloop transitions, 86 changer transitions 0/407 dead transitions. [2024-06-28 01:52:50,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 407 transitions, 5936 flow [2024-06-28 01:52:50,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:52:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:52:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 01:52:50,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314009661835749 [2024-06-28 01:52:50,720 INFO L175 Difference]: Start difference. First operand has 170 places, 331 transitions, 4576 flow. Second operand 9 states and 220 transitions. [2024-06-28 01:52:50,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 407 transitions, 5936 flow [2024-06-28 01:52:50,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 407 transitions, 5717 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:52:50,997 INFO L231 Difference]: Finished difference. Result has 178 places, 363 transitions, 5123 flow [2024-06-28 01:52:50,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4397, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5123, PETRI_PLACES=178, PETRI_TRANSITIONS=363} [2024-06-28 01:52:50,997 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 126 predicate places. [2024-06-28 01:52:50,997 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 363 transitions, 5123 flow [2024-06-28 01:52:50,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:50,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:50,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:50,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:52:50,998 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 01:52:50,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:50,998 INFO L85 PathProgramCache]: Analyzing trace with hash -747399210, now seen corresponding path program 3 times [2024-06-28 01:52:50,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:50,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330818007] [2024-06-28 01:52:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:50,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:51,828 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 01:52:51,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:51,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330818007] [2024-06-28 01:52:51,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330818007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:51,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:51,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:51,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094972517] [2024-06-28 01:52:51,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:51,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:51,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:51,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:51,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:51,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:52:51,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 363 transitions, 5123 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:51,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:51,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:52:51,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:53,495 INFO L124 PetriNetUnfolderBase]: 5731/9208 cut-off events. [2024-06-28 01:52:53,495 INFO L125 PetriNetUnfolderBase]: For 145906/146877 co-relation queries the response was YES. [2024-06-28 01:52:53,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60225 conditions, 9208 events. 5731/9208 cut-off events. For 145906/146877 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 59769 event pairs, 1658 based on Foata normal form. 209/8995 useless extension candidates. Maximal degree in co-relation 60136. Up to 7614 conditions per place. [2024-06-28 01:52:53,602 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 275 selfloop transitions, 103 changer transitions 0/427 dead transitions. [2024-06-28 01:52:53,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 427 transitions, 6303 flow [2024-06-28 01:52:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:52:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:52:53,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-06-28 01:52:53,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152173913043478 [2024-06-28 01:52:53,604 INFO L175 Difference]: Start difference. First operand has 178 places, 363 transitions, 5123 flow. Second operand 10 states and 237 transitions. [2024-06-28 01:52:53,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 427 transitions, 6303 flow [2024-06-28 01:52:54,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 427 transitions, 6059 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-28 01:52:54,081 INFO L231 Difference]: Finished difference. Result has 186 places, 380 transitions, 5401 flow [2024-06-28 01:52:54,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4929, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5401, PETRI_PLACES=186, PETRI_TRANSITIONS=380} [2024-06-28 01:52:54,081 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 134 predicate places. [2024-06-28 01:52:54,081 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 380 transitions, 5401 flow [2024-06-28 01:52:54,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:54,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:54,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:54,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:52:54,082 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 01:52:54,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:54,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1530692532, now seen corresponding path program 4 times [2024-06-28 01:52:54,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:54,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946639254] [2024-06-28 01:52:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:54,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:54,846 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 01:52:54,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:54,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946639254] [2024-06-28 01:52:54,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946639254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:54,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:54,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:52:54,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727939528] [2024-06-28 01:52:54,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:54,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:52:54,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:54,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:52:54,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:52:55,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:52:55,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 380 transitions, 5401 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:55,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:55,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:52:55,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:56,728 INFO L124 PetriNetUnfolderBase]: 5938/9548 cut-off events. [2024-06-28 01:52:56,728 INFO L125 PetriNetUnfolderBase]: For 160601/162030 co-relation queries the response was YES. [2024-06-28 01:52:56,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63115 conditions, 9548 events. 5938/9548 cut-off events. For 160601/162030 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 62319 event pairs, 1394 based on Foata normal form. 262/9340 useless extension candidates. Maximal degree in co-relation 63024. Up to 7680 conditions per place. [2024-06-28 01:52:56,828 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 292 selfloop transitions, 114 changer transitions 0/455 dead transitions. [2024-06-28 01:52:56,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 455 transitions, 6727 flow [2024-06-28 01:52:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:52:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:52:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:52:56,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538647342995169 [2024-06-28 01:52:56,830 INFO L175 Difference]: Start difference. First operand has 186 places, 380 transitions, 5401 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:52:56,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 455 transitions, 6727 flow [2024-06-28 01:52:57,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 455 transitions, 6512 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-28 01:52:57,116 INFO L231 Difference]: Finished difference. Result has 194 places, 405 transitions, 5836 flow [2024-06-28 01:52:57,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5228, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5836, PETRI_PLACES=194, PETRI_TRANSITIONS=405} [2024-06-28 01:52:57,117 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 142 predicate places. [2024-06-28 01:52:57,117 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 405 transitions, 5836 flow [2024-06-28 01:52:57,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:57,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:57,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:57,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:52:57,117 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 01:52:57,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:57,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1662249442, now seen corresponding path program 1 times [2024-06-28 01:52:57,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:57,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981766592] [2024-06-28 01:52:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:57,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:58,106 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 01:52:58,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:58,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981766592] [2024-06-28 01:52:58,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981766592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:58,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:58,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:58,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53991377] [2024-06-28 01:52:58,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:58,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:58,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:58,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:58,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:58,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:52:58,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 405 transitions, 5836 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:58,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:58,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:52:58,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:59,980 INFO L124 PetriNetUnfolderBase]: 6472/10200 cut-off events. [2024-06-28 01:52:59,981 INFO L125 PetriNetUnfolderBase]: For 180262/180262 co-relation queries the response was YES. [2024-06-28 01:53:00,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70623 conditions, 10200 events. 6472/10200 cut-off events. For 180262/180262 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 65380 event pairs, 1519 based on Foata normal form. 5/9946 useless extension candidates. Maximal degree in co-relation 70529. Up to 7775 conditions per place. [2024-06-28 01:53:00,105 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 284 selfloop transitions, 177 changer transitions 0/470 dead transitions. [2024-06-28 01:53:00,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 470 transitions, 7321 flow [2024-06-28 01:53:00,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:53:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:53:00,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 01:53:00,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516304347826086 [2024-06-28 01:53:00,106 INFO L175 Difference]: Start difference. First operand has 194 places, 405 transitions, 5836 flow. Second operand 8 states and 203 transitions. [2024-06-28 01:53:00,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 470 transitions, 7321 flow [2024-06-28 01:53:00,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 470 transitions, 7165 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:53:00,531 INFO L231 Difference]: Finished difference. Result has 197 places, 423 transitions, 6333 flow [2024-06-28 01:53:00,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5680, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6333, PETRI_PLACES=197, PETRI_TRANSITIONS=423} [2024-06-28 01:53:00,532 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 145 predicate places. [2024-06-28 01:53:00,532 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 423 transitions, 6333 flow [2024-06-28 01:53:00,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:00,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:00,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:00,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:53:00,533 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 01:53:00,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1259434004, now seen corresponding path program 2 times [2024-06-28 01:53:00,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:00,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525824725] [2024-06-28 01:53:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:00,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:01,498 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 01:53:01,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:01,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525824725] [2024-06-28 01:53:01,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525824725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:01,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:01,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:01,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601076395] [2024-06-28 01:53:01,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:01,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:01,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:01,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:01,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:01,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:01,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 423 transitions, 6333 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:01,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:01,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:01,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:03,484 INFO L124 PetriNetUnfolderBase]: 6628/10448 cut-off events. [2024-06-28 01:53:03,485 INFO L125 PetriNetUnfolderBase]: For 195097/195097 co-relation queries the response was YES. [2024-06-28 01:53:03,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75378 conditions, 10448 events. 6628/10448 cut-off events. For 195097/195097 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 67162 event pairs, 1511 based on Foata normal form. 5/10194 useless extension candidates. Maximal degree in co-relation 75283. Up to 7865 conditions per place. [2024-06-28 01:53:03,817 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 300 selfloop transitions, 191 changer transitions 0/500 dead transitions. [2024-06-28 01:53:03,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 500 transitions, 7993 flow [2024-06-28 01:53:03,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:53:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:53:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-28 01:53:03,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-28 01:53:03,819 INFO L175 Difference]: Start difference. First operand has 197 places, 423 transitions, 6333 flow. Second operand 10 states and 255 transitions. [2024-06-28 01:53:03,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 500 transitions, 7993 flow [2024-06-28 01:53:04,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 500 transitions, 7565 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 01:53:04,290 INFO L231 Difference]: Finished difference. Result has 202 places, 437 transitions, 6614 flow [2024-06-28 01:53:04,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5917, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6614, PETRI_PLACES=202, PETRI_TRANSITIONS=437} [2024-06-28 01:53:04,297 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 150 predicate places. [2024-06-28 01:53:04,297 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 437 transitions, 6614 flow [2024-06-28 01:53:04,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:04,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:04,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:04,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:53:04,298 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:04,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:04,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2119497547, now seen corresponding path program 1 times [2024-06-28 01:53:04,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:04,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163514065] [2024-06-28 01:53:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:05,088 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 01:53:05,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:05,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163514065] [2024-06-28 01:53:05,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163514065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:05,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:05,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:05,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041465525] [2024-06-28 01:53:05,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:05,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:05,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:05,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:05,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:05,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:05,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 437 transitions, 6614 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:05,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:05,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:05,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:07,443 INFO L124 PetriNetUnfolderBase]: 7003/10899 cut-off events. [2024-06-28 01:53:07,443 INFO L125 PetriNetUnfolderBase]: For 230252/230264 co-relation queries the response was YES. [2024-06-28 01:53:07,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80550 conditions, 10899 events. 7003/10899 cut-off events. For 230252/230264 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 69464 event pairs, 1855 based on Foata normal form. 36/10739 useless extension candidates. Maximal degree in co-relation 80453. Up to 8737 conditions per place. [2024-06-28 01:53:07,594 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 380 selfloop transitions, 111 changer transitions 0/500 dead transitions. [2024-06-28 01:53:07,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 500 transitions, 8174 flow [2024-06-28 01:53:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:53:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:53:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-06-28 01:53:07,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579710144927537 [2024-06-28 01:53:07,602 INFO L175 Difference]: Start difference. First operand has 202 places, 437 transitions, 6614 flow. Second operand 9 states and 231 transitions. [2024-06-28 01:53:07,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 500 transitions, 8174 flow [2024-06-28 01:53:08,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 500 transitions, 7677 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 01:53:08,208 INFO L231 Difference]: Finished difference. Result has 204 places, 441 transitions, 6467 flow [2024-06-28 01:53:08,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6117, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6467, PETRI_PLACES=204, PETRI_TRANSITIONS=441} [2024-06-28 01:53:08,209 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 152 predicate places. [2024-06-28 01:53:08,209 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 441 transitions, 6467 flow [2024-06-28 01:53:08,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:08,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:08,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:08,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:53:08,210 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 01:53:08,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:08,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1276960006, now seen corresponding path program 5 times [2024-06-28 01:53:08,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:08,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756018023] [2024-06-28 01:53:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:08,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:08,941 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 01:53:08,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:08,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756018023] [2024-06-28 01:53:08,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756018023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:08,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:08,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:53:08,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838190866] [2024-06-28 01:53:08,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:08,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:53:08,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:08,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:53:08,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:53:09,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:53:09,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 441 transitions, 6467 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:09,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:09,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:53:09,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:10,943 INFO L124 PetriNetUnfolderBase]: 6602/10500 cut-off events. [2024-06-28 01:53:10,943 INFO L125 PetriNetUnfolderBase]: For 219077/221113 co-relation queries the response was YES. [2024-06-28 01:53:11,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76120 conditions, 10500 events. 6602/10500 cut-off events. For 219077/221113 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 68360 event pairs, 1246 based on Foata normal form. 428/10436 useless extension candidates. Maximal degree in co-relation 76022. Up to 8519 conditions per place. [2024-06-28 01:53:11,078 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 302 selfloop transitions, 112 changer transitions 0/469 dead transitions. [2024-06-28 01:53:11,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 469 transitions, 7495 flow [2024-06-28 01:53:11,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:53:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:53:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:53:11,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2024-06-28 01:53:11,080 INFO L175 Difference]: Start difference. First operand has 204 places, 441 transitions, 6467 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:53:11,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 469 transitions, 7495 flow [2024-06-28 01:53:11,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 469 transitions, 7271 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 01:53:11,539 INFO L231 Difference]: Finished difference. Result has 204 places, 445 transitions, 6626 flow [2024-06-28 01:53:11,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6243, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6626, PETRI_PLACES=204, PETRI_TRANSITIONS=445} [2024-06-28 01:53:11,540 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 152 predicate places. [2024-06-28 01:53:11,541 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 445 transitions, 6626 flow [2024-06-28 01:53:11,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:11,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:11,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:11,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:53:11,541 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 01:53:11,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:11,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1967180627, now seen corresponding path program 2 times [2024-06-28 01:53:11,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:11,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366266804] [2024-06-28 01:53:11,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:11,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:12,341 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 01:53:12,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:12,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366266804] [2024-06-28 01:53:12,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366266804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:12,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:12,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:12,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121687639] [2024-06-28 01:53:12,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:12,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:12,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:12,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:12,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:12,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:12,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 445 transitions, 6626 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:12,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:12,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:12,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:14,543 INFO L124 PetriNetUnfolderBase]: 7053/11144 cut-off events. [2024-06-28 01:53:14,543 INFO L125 PetriNetUnfolderBase]: For 239793/239805 co-relation queries the response was YES. [2024-06-28 01:53:14,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81488 conditions, 11144 events. 7053/11144 cut-off events. For 239793/239805 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 72706 event pairs, 2124 based on Foata normal form. 12/10917 useless extension candidates. Maximal degree in co-relation 81389. Up to 9747 conditions per place. [2024-06-28 01:53:14,667 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 434 selfloop transitions, 61 changer transitions 0/504 dead transitions. [2024-06-28 01:53:14,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 504 transitions, 8063 flow [2024-06-28 01:53:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:53:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:53:14,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:53:14,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120772946859904 [2024-06-28 01:53:14,668 INFO L175 Difference]: Start difference. First operand has 204 places, 445 transitions, 6626 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:53:14,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 504 transitions, 8063 flow [2024-06-28 01:53:15,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 504 transitions, 7854 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:15,139 INFO L231 Difference]: Finished difference. Result has 211 places, 453 transitions, 6716 flow [2024-06-28 01:53:15,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6417, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6716, PETRI_PLACES=211, PETRI_TRANSITIONS=453} [2024-06-28 01:53:15,140 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 159 predicate places. [2024-06-28 01:53:15,140 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 453 transitions, 6716 flow [2024-06-28 01:53:15,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:15,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:15,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:15,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:53:15,141 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 01:53:15,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:15,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1967180348, now seen corresponding path program 3 times [2024-06-28 01:53:15,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:15,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828961339] [2024-06-28 01:53:15,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:15,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:15,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:15,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828961339] [2024-06-28 01:53:15,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828961339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:15,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:15,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:15,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013035845] [2024-06-28 01:53:15,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:15,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:15,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:15,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:15,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:16,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:16,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 453 transitions, 6716 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:16,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:16,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:16,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:18,195 INFO L124 PetriNetUnfolderBase]: 7076/11287 cut-off events. [2024-06-28 01:53:18,196 INFO L125 PetriNetUnfolderBase]: For 221148/221148 co-relation queries the response was YES. [2024-06-28 01:53:18,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80771 conditions, 11287 events. 7076/11287 cut-off events. For 221148/221148 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 74761 event pairs, 1716 based on Foata normal form. 2/10989 useless extension candidates. Maximal degree in co-relation 80670. Up to 9525 conditions per place. [2024-06-28 01:53:18,325 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 410 selfloop transitions, 92 changer transitions 0/511 dead transitions. [2024-06-28 01:53:18,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 511 transitions, 8168 flow [2024-06-28 01:53:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:53:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:53:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 01:53:18,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:53:18,326 INFO L175 Difference]: Start difference. First operand has 211 places, 453 transitions, 6716 flow. Second operand 9 states and 216 transitions. [2024-06-28 01:53:18,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 511 transitions, 8168 flow [2024-06-28 01:53:18,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 511 transitions, 7978 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:18,729 INFO L231 Difference]: Finished difference. Result has 216 places, 456 transitions, 6814 flow [2024-06-28 01:53:18,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6534, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6814, PETRI_PLACES=216, PETRI_TRANSITIONS=456} [2024-06-28 01:53:18,732 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 164 predicate places. [2024-06-28 01:53:18,732 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 456 transitions, 6814 flow [2024-06-28 01:53:18,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:18,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:18,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:18,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:53:18,733 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 01:53:18,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:18,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1710679838, now seen corresponding path program 4 times [2024-06-28 01:53:18,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:18,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397819684] [2024-06-28 01:53:18,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:18,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:19,713 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 01:53:19,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:19,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397819684] [2024-06-28 01:53:19,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397819684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:19,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:19,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:19,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145166354] [2024-06-28 01:53:19,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:19,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:19,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:19,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:19,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:19,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:19,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 456 transitions, 6814 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:19,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:19,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:19,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:22,373 INFO L124 PetriNetUnfolderBase]: 7154/11336 cut-off events. [2024-06-28 01:53:22,373 INFO L125 PetriNetUnfolderBase]: For 238855/238855 co-relation queries the response was YES. [2024-06-28 01:53:22,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82823 conditions, 11336 events. 7154/11336 cut-off events. For 238855/238855 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 74595 event pairs, 1666 based on Foata normal form. 5/11061 useless extension candidates. Maximal degree in co-relation 82721. Up to 9141 conditions per place. [2024-06-28 01:53:22,522 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 378 selfloop transitions, 140 changer transitions 0/527 dead transitions. [2024-06-28 01:53:22,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 527 transitions, 8507 flow [2024-06-28 01:53:22,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:53:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:53:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-28 01:53:22,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5456521739130434 [2024-06-28 01:53:22,523 INFO L175 Difference]: Start difference. First operand has 216 places, 456 transitions, 6814 flow. Second operand 10 states and 251 transitions. [2024-06-28 01:53:22,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 527 transitions, 8507 flow [2024-06-28 01:53:23,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 527 transitions, 8251 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 01:53:23,081 INFO L231 Difference]: Finished difference. Result has 219 places, 461 transitions, 6997 flow [2024-06-28 01:53:23,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6558, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6997, PETRI_PLACES=219, PETRI_TRANSITIONS=461} [2024-06-28 01:53:23,082 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 167 predicate places. [2024-06-28 01:53:23,082 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 461 transitions, 6997 flow [2024-06-28 01:53:23,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:23,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:23,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:23,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:53:23,083 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 01:53:23,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:23,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1976377118, now seen corresponding path program 5 times [2024-06-28 01:53:23,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:23,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470074297] [2024-06-28 01:53:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:23,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:23,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:23,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470074297] [2024-06-28 01:53:23,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470074297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:23,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:23,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:23,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271785910] [2024-06-28 01:53:23,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:23,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:23,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:23,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:23,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:24,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:24,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 461 transitions, 6997 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:24,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:24,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:24,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:26,445 INFO L124 PetriNetUnfolderBase]: 7159/11415 cut-off events. [2024-06-28 01:53:26,445 INFO L125 PetriNetUnfolderBase]: For 254730/254730 co-relation queries the response was YES. [2024-06-28 01:53:26,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84488 conditions, 11415 events. 7159/11415 cut-off events. For 254730/254730 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 75739 event pairs, 1728 based on Foata normal form. 2/11120 useless extension candidates. Maximal degree in co-relation 84385. Up to 9451 conditions per place. [2024-06-28 01:53:26,564 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 418 selfloop transitions, 121 changer transitions 0/548 dead transitions. [2024-06-28 01:53:26,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 548 transitions, 8752 flow [2024-06-28 01:53:26,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:53:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:53:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 263 transitions. [2024-06-28 01:53:26,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197628458498024 [2024-06-28 01:53:26,565 INFO L175 Difference]: Start difference. First operand has 219 places, 461 transitions, 6997 flow. Second operand 11 states and 263 transitions. [2024-06-28 01:53:26,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 548 transitions, 8752 flow [2024-06-28 01:53:27,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 548 transitions, 8300 flow, removed 85 selfloop flow, removed 8 redundant places. [2024-06-28 01:53:27,063 INFO L231 Difference]: Finished difference. Result has 225 places, 478 transitions, 7106 flow [2024-06-28 01:53:27,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6593, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7106, PETRI_PLACES=225, PETRI_TRANSITIONS=478} [2024-06-28 01:53:27,063 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 173 predicate places. [2024-06-28 01:53:27,063 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 478 transitions, 7106 flow [2024-06-28 01:53:27,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:27,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:27,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:27,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:53:27,064 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 01:53:27,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:27,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1710680117, now seen corresponding path program 3 times [2024-06-28 01:53:27,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:27,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143078335] [2024-06-28 01:53:27,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:27,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:27,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:27,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143078335] [2024-06-28 01:53:27,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143078335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:27,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:27,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33747727] [2024-06-28 01:53:27,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:27,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:27,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:27,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:27,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 478 transitions, 7106 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:27,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:27,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:27,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:30,547 INFO L124 PetriNetUnfolderBase]: 8247/13009 cut-off events. [2024-06-28 01:53:30,547 INFO L125 PetriNetUnfolderBase]: For 342179/342179 co-relation queries the response was YES. [2024-06-28 01:53:30,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97696 conditions, 13009 events. 8247/13009 cut-off events. For 342179/342179 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 87700 event pairs, 1929 based on Foata normal form. 92/12816 useless extension candidates. Maximal degree in co-relation 97589. Up to 9321 conditions per place. [2024-06-28 01:53:30,758 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 405 selfloop transitions, 140 changer transitions 0/554 dead transitions. [2024-06-28 01:53:30,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 554 transitions, 8917 flow [2024-06-28 01:53:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:53:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:53:30,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-28 01:53:30,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565217391304348 [2024-06-28 01:53:30,760 INFO L175 Difference]: Start difference. First operand has 225 places, 478 transitions, 7106 flow. Second operand 10 states and 256 transitions. [2024-06-28 01:53:30,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 554 transitions, 8917 flow [2024-06-28 01:53:31,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 554 transitions, 8622 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 01:53:31,755 INFO L231 Difference]: Finished difference. Result has 229 places, 481 transitions, 7219 flow [2024-06-28 01:53:31,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6819, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7219, PETRI_PLACES=229, PETRI_TRANSITIONS=481} [2024-06-28 01:53:31,755 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 177 predicate places. [2024-06-28 01:53:31,755 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 481 transitions, 7219 flow [2024-06-28 01:53:31,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:31,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:31,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:31,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:53:31,756 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 01:53:31,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:31,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1976377397, now seen corresponding path program 4 times [2024-06-28 01:53:31,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:31,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519021380] [2024-06-28 01:53:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:31,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:32,457 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 01:53:32,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:32,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519021380] [2024-06-28 01:53:32,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519021380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:32,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:32,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:32,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788224658] [2024-06-28 01:53:32,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:32,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:32,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:32,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 481 transitions, 7219 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:32,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:32,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:32,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:35,179 INFO L124 PetriNetUnfolderBase]: 8284/13045 cut-off events. [2024-06-28 01:53:35,179 INFO L125 PetriNetUnfolderBase]: For 325706/325718 co-relation queries the response was YES. [2024-06-28 01:53:35,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98412 conditions, 13045 events. 8284/13045 cut-off events. For 325706/325718 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 87683 event pairs, 2472 based on Foata normal form. 12/12820 useless extension candidates. Maximal degree in co-relation 98304. Up to 11528 conditions per place. [2024-06-28 01:53:35,374 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 441 selfloop transitions, 84 changer transitions 0/534 dead transitions. [2024-06-28 01:53:35,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 534 transitions, 8633 flow [2024-06-28 01:53:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:53:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:53:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 01:53:35,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-28 01:53:35,376 INFO L175 Difference]: Start difference. First operand has 229 places, 481 transitions, 7219 flow. Second operand 9 states and 213 transitions. [2024-06-28 01:53:35,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 534 transitions, 8633 flow [2024-06-28 01:53:36,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 534 transitions, 8317 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 01:53:36,254 INFO L231 Difference]: Finished difference. Result has 230 places, 483 transitions, 7151 flow [2024-06-28 01:53:36,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6903, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7151, PETRI_PLACES=230, PETRI_TRANSITIONS=483} [2024-06-28 01:53:36,255 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 178 predicate places. [2024-06-28 01:53:36,255 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 483 transitions, 7151 flow [2024-06-28 01:53:36,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:36,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:36,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:36,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:53:36,256 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 01:53:36,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:36,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1976703827, now seen corresponding path program 5 times [2024-06-28 01:53:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:36,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032568627] [2024-06-28 01:53:36,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:36,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:37,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:37,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032568627] [2024-06-28 01:53:37,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032568627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:37,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:37,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:37,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908045214] [2024-06-28 01:53:37,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:37,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:37,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:37,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:37,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:37,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:37,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 483 transitions, 7151 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:37,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:37,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:37,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:40,029 INFO L124 PetriNetUnfolderBase]: 8284/13053 cut-off events. [2024-06-28 01:53:40,029 INFO L125 PetriNetUnfolderBase]: For 313199/313211 co-relation queries the response was YES. [2024-06-28 01:53:40,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96661 conditions, 13053 events. 8284/13053 cut-off events. For 313199/313211 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 87633 event pairs, 2399 based on Foata normal form. 12/12826 useless extension candidates. Maximal degree in co-relation 96552. Up to 11337 conditions per place. [2024-06-28 01:53:40,537 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 439 selfloop transitions, 94 changer transitions 0/542 dead transitions. [2024-06-28 01:53:40,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 542 transitions, 8715 flow [2024-06-28 01:53:40,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:53:40,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:53:40,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:53:40,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5169082125603864 [2024-06-28 01:53:40,542 INFO L175 Difference]: Start difference. First operand has 230 places, 483 transitions, 7151 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:53:40,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 542 transitions, 8715 flow [2024-06-28 01:53:41,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 542 transitions, 8471 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 01:53:41,415 INFO L231 Difference]: Finished difference. Result has 232 places, 490 transitions, 7334 flow [2024-06-28 01:53:41,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6907, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7334, PETRI_PLACES=232, PETRI_TRANSITIONS=490} [2024-06-28 01:53:41,420 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 180 predicate places. [2024-06-28 01:53:41,420 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 490 transitions, 7334 flow [2024-06-28 01:53:41,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:41,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:41,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:41,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:53:41,420 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 01:53:41,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:41,421 INFO L85 PathProgramCache]: Analyzing trace with hash 449759707, now seen corresponding path program 1 times [2024-06-28 01:53:41,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:41,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207734661] [2024-06-28 01:53:41,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:41,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:42,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:42,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207734661] [2024-06-28 01:53:42,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207734661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:42,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:42,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:42,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827687269] [2024-06-28 01:53:42,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:42,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:42,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:42,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 490 transitions, 7334 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:42,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:42,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:42,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:45,657 INFO L124 PetriNetUnfolderBase]: 9024/14212 cut-off events. [2024-06-28 01:53:45,657 INFO L125 PetriNetUnfolderBase]: For 345861/345861 co-relation queries the response was YES. [2024-06-28 01:53:45,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105665 conditions, 14212 events. 9024/14212 cut-off events. For 345861/345861 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 97557 event pairs, 1855 based on Foata normal form. 14/13948 useless extension candidates. Maximal degree in co-relation 105554. Up to 11203 conditions per place. [2024-06-28 01:53:45,842 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 460 selfloop transitions, 117 changer transitions 0/586 dead transitions. [2024-06-28 01:53:45,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 586 transitions, 9761 flow [2024-06-28 01:53:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:53:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:53:45,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:53:45,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-28 01:53:45,846 INFO L175 Difference]: Start difference. First operand has 232 places, 490 transitions, 7334 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:53:45,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 586 transitions, 9761 flow [2024-06-28 01:53:46,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 586 transitions, 9522 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-28 01:53:46,820 INFO L231 Difference]: Finished difference. Result has 238 places, 524 transitions, 8107 flow [2024-06-28 01:53:46,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7095, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8107, PETRI_PLACES=238, PETRI_TRANSITIONS=524} [2024-06-28 01:53:46,821 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 186 predicate places. [2024-06-28 01:53:46,821 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 524 transitions, 8107 flow [2024-06-28 01:53:46,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:46,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:46,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:46,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:53:46,822 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 01:53:46,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:46,822 INFO L85 PathProgramCache]: Analyzing trace with hash -520837207, now seen corresponding path program 2 times [2024-06-28 01:53:46,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:46,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118895276] [2024-06-28 01:53:46,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:46,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:47,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:47,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118895276] [2024-06-28 01:53:47,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118895276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:47,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:47,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:47,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866457915] [2024-06-28 01:53:47,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:47,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:47,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:47,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:47,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:47,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:47,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 524 transitions, 8107 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:47,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:47,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:47,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:52,120 INFO L124 PetriNetUnfolderBase]: 10771/16843 cut-off events. [2024-06-28 01:53:52,121 INFO L125 PetriNetUnfolderBase]: For 468308/468308 co-relation queries the response was YES. [2024-06-28 01:53:52,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128794 conditions, 16843 events. 10771/16843 cut-off events. For 468308/468308 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 117415 event pairs, 2264 based on Foata normal form. 90/16617 useless extension candidates. Maximal degree in co-relation 128679. Up to 11968 conditions per place. [2024-06-28 01:53:52,378 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 421 selfloop transitions, 234 changer transitions 0/664 dead transitions. [2024-06-28 01:53:52,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 664 transitions, 11042 flow [2024-06-28 01:53:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:53:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:53:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-28 01:53:52,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 01:53:52,379 INFO L175 Difference]: Start difference. First operand has 238 places, 524 transitions, 8107 flow. Second operand 10 states and 253 transitions. [2024-06-28 01:53:52,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 664 transitions, 11042 flow [2024-06-28 01:53:54,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 664 transitions, 10751 flow, removed 98 selfloop flow, removed 3 redundant places. [2024-06-28 01:53:54,032 INFO L231 Difference]: Finished difference. Result has 249 places, 602 transitions, 9768 flow [2024-06-28 01:53:54,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7816, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9768, PETRI_PLACES=249, PETRI_TRANSITIONS=602} [2024-06-28 01:53:54,053 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 197 predicate places. [2024-06-28 01:53:54,053 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 602 transitions, 9768 flow [2024-06-28 01:53:54,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:54,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:53:54,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:53:54,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:53:54,053 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:53:54,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:53:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1381078659, now seen corresponding path program 3 times [2024-06-28 01:53:54,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:53:54,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211900489] [2024-06-28 01:53:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:53:54,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:53:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:53:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:53:55,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:53:55,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211900489] [2024-06-28 01:53:55,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211900489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:53:55,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:53:55,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:53:55,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99972439] [2024-06-28 01:53:55,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:53:55,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:53:55,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:53:55,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:53:55,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:53:55,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:53:55,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 602 transitions, 9768 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:53:55,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:53:55,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:53:55,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:59,554 INFO L124 PetriNetUnfolderBase]: 11702/17889 cut-off events. [2024-06-28 01:53:59,554 INFO L125 PetriNetUnfolderBase]: For 521147/521147 co-relation queries the response was YES. [2024-06-28 01:53:59,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146150 conditions, 17889 events. 11702/17889 cut-off events. For 521147/521147 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 122541 event pairs, 2325 based on Foata normal form. 20/17711 useless extension candidates. Maximal degree in co-relation 146029. Up to 13553 conditions per place. [2024-06-28 01:53:59,993 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 473 selfloop transitions, 210 changer transitions 0/692 dead transitions. [2024-06-28 01:53:59,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 692 transitions, 12636 flow [2024-06-28 01:53:59,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:53:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:54:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:54:00,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5788043478260869 [2024-06-28 01:54:00,000 INFO L175 Difference]: Start difference. First operand has 249 places, 602 transitions, 9768 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:54:00,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 692 transitions, 12636 flow [2024-06-28 01:54:02,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 692 transitions, 12275 flow, removed 133 selfloop flow, removed 3 redundant places. [2024-06-28 01:54:02,012 INFO L231 Difference]: Finished difference. Result has 256 places, 627 transitions, 10755 flow [2024-06-28 01:54:02,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9463, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10755, PETRI_PLACES=256, PETRI_TRANSITIONS=627} [2024-06-28 01:54:02,013 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 204 predicate places. [2024-06-28 01:54:02,013 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 627 transitions, 10755 flow [2024-06-28 01:54:02,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:02,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:02,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:02,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:54:02,014 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:02,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1280159323, now seen corresponding path program 4 times [2024-06-28 01:54:02,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:02,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063241868] [2024-06-28 01:54:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:02,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:02,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:02,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:02,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063241868] [2024-06-28 01:54:02,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063241868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:02,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:02,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:02,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184147793] [2024-06-28 01:54:02,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:02,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:02,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:02,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:02,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:03,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:54:03,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 627 transitions, 10755 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:03,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:03,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:54:03,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:07,878 INFO L124 PetriNetUnfolderBase]: 11908/19006 cut-off events. [2024-06-28 01:54:07,878 INFO L125 PetriNetUnfolderBase]: For 562648/562660 co-relation queries the response was YES. [2024-06-28 01:54:08,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153980 conditions, 19006 events. 11908/19006 cut-off events. For 562648/562660 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 139156 event pairs, 4086 based on Foata normal form. 24/18611 useless extension candidates. Maximal degree in co-relation 153855. Up to 16363 conditions per place. [2024-06-28 01:54:08,163 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 592 selfloop transitions, 83 changer transitions 0/684 dead transitions. [2024-06-28 01:54:08,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 684 transitions, 12678 flow [2024-06-28 01:54:08,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:08,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 01:54:08,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483091787439613 [2024-06-28 01:54:08,165 INFO L175 Difference]: Start difference. First operand has 256 places, 627 transitions, 10755 flow. Second operand 9 states and 227 transitions. [2024-06-28 01:54:08,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 684 transitions, 12678 flow [2024-06-28 01:54:10,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 684 transitions, 12443 flow, removed 90 selfloop flow, removed 2 redundant places. [2024-06-28 01:54:10,517 INFO L231 Difference]: Finished difference. Result has 263 places, 630 transitions, 10824 flow [2024-06-28 01:54:10,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10542, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10824, PETRI_PLACES=263, PETRI_TRANSITIONS=630} [2024-06-28 01:54:10,518 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 211 predicate places. [2024-06-28 01:54:10,518 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 630 transitions, 10824 flow [2024-06-28 01:54:10,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:10,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:10,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:10,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:54:10,519 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:10,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:10,519 INFO L85 PathProgramCache]: Analyzing trace with hash -394240727, now seen corresponding path program 5 times [2024-06-28 01:54:10,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:10,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509655871] [2024-06-28 01:54:10,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:10,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:54:11,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:54:11,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:54:11,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509655871] [2024-06-28 01:54:11,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509655871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:54:11,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:54:11,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:54:11,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396779715] [2024-06-28 01:54:11,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:54:11,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:54:11,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:54:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:54:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:54:11,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-06-28 01:54:11,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 630 transitions, 10824 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:11,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:54:11,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-06-28 01:54:11,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:54:16,433 INFO L124 PetriNetUnfolderBase]: 12052/19288 cut-off events. [2024-06-28 01:54:16,433 INFO L125 PetriNetUnfolderBase]: For 552348/552360 co-relation queries the response was YES. [2024-06-28 01:54:16,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153812 conditions, 19288 events. 12052/19288 cut-off events. For 552348/552360 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 142075 event pairs, 4106 based on Foata normal form. 24/18877 useless extension candidates. Maximal degree in co-relation 153684. Up to 16579 conditions per place. [2024-06-28 01:54:16,732 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 601 selfloop transitions, 79 changer transitions 0/689 dead transitions. [2024-06-28 01:54:16,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 689 transitions, 12813 flow [2024-06-28 01:54:16,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:54:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:54:16,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:54:16,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458937198067633 [2024-06-28 01:54:16,733 INFO L175 Difference]: Start difference. First operand has 263 places, 630 transitions, 10824 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:54:16,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 689 transitions, 12813 flow [2024-06-28 01:54:18,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 689 transitions, 12625 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 01:54:18,881 INFO L231 Difference]: Finished difference. Result has 267 places, 634 transitions, 10962 flow [2024-06-28 01:54:18,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10636, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10962, PETRI_PLACES=267, PETRI_TRANSITIONS=634} [2024-06-28 01:54:18,883 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 215 predicate places. [2024-06-28 01:54:18,883 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 634 transitions, 10962 flow [2024-06-28 01:54:18,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:54:18,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:54:18,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:54:18,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:54:18,883 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:54:18,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:54:18,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1279921739, now seen corresponding path program 1 times [2024-06-28 01:54:18,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:54:18,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006692414] [2024-06-28 01:54:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:54:18,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:54:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat