./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_power.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/safe009_power.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/safe009_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_power.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 01:56:51,364 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:56:51,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:56:51,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:56:51,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:56:51,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:56:51,478 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:56:51,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:56:51,479 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:56:51,484 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:56:51,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:56:51,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:56:51,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:56:51,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:56:51,487 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:56:51,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:56:51,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:56:51,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:56:51,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:56:51,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:56:51,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:56:51,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:56:51,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:56:51,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:56:51,490 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:56:51,490 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:56:51,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:56:51,491 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:56:51,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:56:51,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:56:51,493 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:56:51,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:56:51,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:56:51,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:56:51,494 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:56:51,494 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:56:51,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:56:51,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:56:51,495 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:56:51,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:56:51,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:56:51,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:56:51,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:56:51,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:56:51,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:56:51,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:56:51,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:56:51,804 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:56:51,805 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:56:51,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe009_power.opt.yml/witness.yml [2024-06-28 01:56:52,023 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:56:52,024 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:56:52,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_power.opt.i [2024-06-28 01:56:53,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:56:53,389 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:56:53,404 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_power.opt.i [2024-06-28 01:56:53,425 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b740115f6/770ac331024b49b7ac2b154c2c281e0e/FLAG73276c026 [2024-06-28 01:56:53,441 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b740115f6/770ac331024b49b7ac2b154c2c281e0e [2024-06-28 01:56:53,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:56:53,444 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:56:53,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:56:53,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:56:53,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:56:53,450 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:56:52" (1/2) ... [2024-06-28 01:56:53,451 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ff95bb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:53, skipping insertion in model container [2024-06-28 01:56:53,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:56:52" (1/2) ... [2024-06-28 01:56:53,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6abaf05e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:53, skipping insertion in model container [2024-06-28 01:56:53,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:56:53" (2/2) ... [2024-06-28 01:56:53,453 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ff95bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:53, skipping insertion in model container [2024-06-28 01:56:53,453 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:56:53" (2/2) ... [2024-06-28 01:56:53,453 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:56:53,585 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:56:53,586 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 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)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:56:53,586 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] (((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:56:53,587 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 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)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:56:53,587 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:56:53,587 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-28 01:56:53,632 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:56:53,776 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/safe009_power.opt.i[951,964] [2024-06-28 01:56:54,044 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:56:54,053 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:56:54,097 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/safe009_power.opt.i[951,964] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:56:54,224 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:56:54,281 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:56:54,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54 WrapperNode [2024-06-28 01:56:54,281 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:56:54,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:56:54,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:56:54,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:56:54,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,377 INFO L138 Inliner]: procedures = 175, calls = 83, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 249 [2024-06-28 01:56:54,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:56:54,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:56:54,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:56:54,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:56:54,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,405 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,520 INFO L175 MemorySlicer]: Split 44 memory accesses to 2 slices as follows [2, 42]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 6 writes are split as follows [0, 6]. [2024-06-28 01:56:54,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,550 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:56:54,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:56:54,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:56:54,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:56:54,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (1/1) ... [2024-06-28 01:56:54,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:56:54,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:56:54,600 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 01:56:54,602 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 01:56:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:56:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:56:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:56:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:56:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:56:54,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:56:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:56:54,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:56:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:56:54,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:56:54,632 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:56:54,632 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:56:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:56:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:56:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:56:54,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:56:54,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:56:54,635 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 01:56:54,763 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:56:54,764 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:56:55,299 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:56:55,300 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:56:55,821 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:56:55,821 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:56:55,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:56:55 BoogieIcfgContainer [2024-06-28 01:56:55,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:56:55,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:56:55,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:56:55,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:56:55,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:56:52" (1/4) ... [2024-06-28 01:56:55,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1453ff03 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:56:55, skipping insertion in model container [2024-06-28 01:56:55,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:56:53" (2/4) ... [2024-06-28 01:56:55,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1453ff03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:56:55, skipping insertion in model container [2024-06-28 01:56:55,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:54" (3/4) ... [2024-06-28 01:56:55,833 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1453ff03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:56:55, skipping insertion in model container [2024-06-28 01:56:55,833 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:56:55" (4/4) ... [2024-06-28 01:56:55,835 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_power.opt.i [2024-06-28 01:56:55,852 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:56:55,853 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:56:55,853 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:56:55,930 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:56:55,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:56:56,015 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:56:56,015 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:56:56,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:56:56,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:56:56,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-28 01:56:56,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:56:56,052 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;@5efdcbae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:56:56,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:56:56,057 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:56:56,057 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:56:56,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:56:56,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:56,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:56:56,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:56,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:56,064 INFO L85 PathProgramCache]: Analyzing trace with hash 828273477, now seen corresponding path program 1 times [2024-06-28 01:56:56,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:56,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939789266] [2024-06-28 01:56:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:58,429 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 01:56:58,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:58,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939789266] [2024-06-28 01:56:58,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939789266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:58,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:58,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:56:58,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320588209] [2024-06-28 01:56:58,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:58,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:56:58,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:58,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:56:58,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:56:58,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:56:58,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:58,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:58,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:56:58,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:00,095 INFO L124 PetriNetUnfolderBase]: 4577/7130 cut-off events. [2024-06-28 01:57:00,095 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 01:57:00,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13806 conditions, 7130 events. 4577/7130 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 43406 event pairs, 2840 based on Foata normal form. 180/6575 useless extension candidates. Maximal degree in co-relation 13794. Up to 6571 conditions per place. [2024-06-28 01:57:00,147 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 47 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2024-06-28 01:57:00,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 243 flow [2024-06-28 01:57:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:57:00,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:57:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-06-28 01:57:00,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-28 01:57:00,160 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 90 transitions. [2024-06-28 01:57:00,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 243 flow [2024-06-28 01:57:00,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:00,165 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 136 flow [2024-06-28 01:57:00,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-06-28 01:57:00,170 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:57:00,170 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 136 flow [2024-06-28 01:57:00,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:00,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:00,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-28 01:57:00,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:57:00,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:00,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:00,172 INFO L85 PathProgramCache]: Analyzing trace with hash -93295384, now seen corresponding path program 1 times [2024-06-28 01:57:00,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:00,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960642292] [2024-06-28 01:57:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:00,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:00,226 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 01:57:00,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:00,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960642292] [2024-06-28 01:57:00,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960642292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:00,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:00,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:57:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378522099] [2024-06-28 01:57:00,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:00,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:57:00,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:00,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:57:00,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:57:00,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-28 01:57:00,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:00,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:00,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-28 01:57:00,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:00,878 INFO L124 PetriNetUnfolderBase]: 1426/2512 cut-off events. [2024-06-28 01:57:00,878 INFO L125 PetriNetUnfolderBase]: For 435/443 co-relation queries the response was YES. [2024-06-28 01:57:00,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5280 conditions, 2512 events. 1426/2512 cut-off events. For 435/443 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16115 event pairs, 859 based on Foata normal form. 0/2336 useless extension candidates. Maximal degree in co-relation 5268. Up to 1698 conditions per place. [2024-06-28 01:57:00,944 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 52 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-06-28 01:57:00,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 295 flow [2024-06-28 01:57:00,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:57:00,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:57:00,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-28 01:57:00,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-06-28 01:57:00,947 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 136 flow. Second operand 3 states and 101 transitions. [2024-06-28 01:57:00,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 295 flow [2024-06-28 01:57:00,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 69 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:00,951 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 128 flow [2024-06-28 01:57:00,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-28 01:57:00,952 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:57:00,952 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 128 flow [2024-06-28 01:57:00,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:00,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:00,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:00,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:57:00,953 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:00,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:00,954 INFO L85 PathProgramCache]: Analyzing trace with hash 509739850, now seen corresponding path program 1 times [2024-06-28 01:57:00,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:00,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525315150] [2024-06-28 01:57:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:00,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:03,317 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 01:57:03,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:03,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525315150] [2024-06-28 01:57:03,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525315150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:03,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:03,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:57:03,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85652290] [2024-06-28 01:57:03,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:03,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:57:03,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:57:03,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:57:03,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:57:03,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:03,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:03,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:57:03,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:04,692 INFO L124 PetriNetUnfolderBase]: 4571/7120 cut-off events. [2024-06-28 01:57:04,692 INFO L125 PetriNetUnfolderBase]: For 1478/1484 co-relation queries the response was YES. [2024-06-28 01:57:04,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15527 conditions, 7120 events. 4571/7120 cut-off events. For 1478/1484 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 41077 event pairs, 2602 based on Foata normal form. 7/6942 useless extension candidates. Maximal degree in co-relation 15514. Up to 6510 conditions per place. [2024-06-28 01:57:04,734 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 63 selfloop transitions, 9 changer transitions 1/80 dead transitions. [2024-06-28 01:57:04,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 364 flow [2024-06-28 01:57:04,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:57:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:57:04,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-06-28 01:57:04,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-06-28 01:57:04,737 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 128 flow. Second operand 4 states and 112 transitions. [2024-06-28 01:57:04,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 364 flow [2024-06-28 01:57:04,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 80 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:04,740 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 198 flow [2024-06-28 01:57:04,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-06-28 01:57:04,741 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-28 01:57:04,741 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 198 flow [2024-06-28 01:57:04,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:04,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:04,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:04,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:57:04,742 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:04,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:04,743 INFO L85 PathProgramCache]: Analyzing trace with hash -519057467, now seen corresponding path program 1 times [2024-06-28 01:57:04,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:04,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801135474] [2024-06-28 01:57:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:04,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:07,732 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 01:57:07,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:07,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801135474] [2024-06-28 01:57:07,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801135474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:07,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:07,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:57:07,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533237616] [2024-06-28 01:57:07,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:07,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:57:07,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:07,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:57:07,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:57:07,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:57:07,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:07,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:07,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:57:07,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:09,091 INFO L124 PetriNetUnfolderBase]: 4121/6487 cut-off events. [2024-06-28 01:57:09,091 INFO L125 PetriNetUnfolderBase]: For 2613/2631 co-relation queries the response was YES. [2024-06-28 01:57:09,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15403 conditions, 6487 events. 4121/6487 cut-off events. For 2613/2631 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 37489 event pairs, 1927 based on Foata normal form. 15/6317 useless extension candidates. Maximal degree in co-relation 15388. Up to 5845 conditions per place. [2024-06-28 01:57:09,134 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 73 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2024-06-28 01:57:09,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 100 transitions, 520 flow [2024-06-28 01:57:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:57:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:57:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-06-28 01:57:09,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5914893617021276 [2024-06-28 01:57:09,137 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 198 flow. Second operand 5 states and 139 transitions. [2024-06-28 01:57:09,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 100 transitions, 520 flow [2024-06-28 01:57:09,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 506 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:09,141 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 298 flow [2024-06-28 01:57:09,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2024-06-28 01:57:09,148 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2024-06-28 01:57:09,148 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 298 flow [2024-06-28 01:57:09,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:09,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:09,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:09,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:57:09,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:09,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1089089575, now seen corresponding path program 1 times [2024-06-28 01:57:09,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:09,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621859348] [2024-06-28 01:57:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:09,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:12,453 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 01:57:12,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:12,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621859348] [2024-06-28 01:57:12,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621859348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:12,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:12,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:12,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147834383] [2024-06-28 01:57:12,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:12,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:12,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:12,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:12,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:12,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:57:12,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:57:12,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:12,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:57:12,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:13,923 INFO L124 PetriNetUnfolderBase]: 4120/6483 cut-off events. [2024-06-28 01:57:13,923 INFO L125 PetriNetUnfolderBase]: For 5663/5681 co-relation queries the response was YES. [2024-06-28 01:57:13,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17006 conditions, 6483 events. 4120/6483 cut-off events. For 5663/5681 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 37433 event pairs, 1540 based on Foata normal form. 18/6316 useless extension candidates. Maximal degree in co-relation 16988. Up to 5792 conditions per place. [2024-06-28 01:57:13,962 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 93 selfloop transitions, 16 changer transitions 0/116 dead transitions. [2024-06-28 01:57:13,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 116 transitions, 682 flow [2024-06-28 01:57:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-06-28 01:57:13,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-06-28 01:57:13,968 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 298 flow. Second operand 6 states and 160 transitions. [2024-06-28 01:57:13,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 116 transitions, 682 flow [2024-06-28 01:57:13,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 116 transitions, 644 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:13,981 INFO L231 Difference]: Finished difference. Result has 65 places, 67 transitions, 367 flow [2024-06-28 01:57:13,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=367, PETRI_PLACES=65, PETRI_TRANSITIONS=67} [2024-06-28 01:57:13,984 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2024-06-28 01:57:13,984 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 67 transitions, 367 flow [2024-06-28 01:57:13,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:57:13,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:13,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:13,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:57:13,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:13,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash -466007452, now seen corresponding path program 1 times [2024-06-28 01:57:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:13,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258206926] [2024-06-28 01:57:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:13,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:16,135 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 01:57:16,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:16,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258206926] [2024-06-28 01:57:16,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258206926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:16,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:16,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:57:16,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427268524] [2024-06-28 01:57:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:16,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:57:16,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:57:16,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:57:16,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:57:16,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 67 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:16,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:16,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:57:16,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:17,388 INFO L124 PetriNetUnfolderBase]: 3380/5276 cut-off events. [2024-06-28 01:57:17,388 INFO L125 PetriNetUnfolderBase]: For 7373/7373 co-relation queries the response was YES. [2024-06-28 01:57:17,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15103 conditions, 5276 events. 3380/5276 cut-off events. For 7373/7373 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 29928 event pairs, 1462 based on Foata normal form. 2/5148 useless extension candidates. Maximal degree in co-relation 15081. Up to 4854 conditions per place. [2024-06-28 01:57:17,433 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 76 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-28 01:57:17,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 97 transitions, 651 flow [2024-06-28 01:57:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:57:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:57:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 01:57:17,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-28 01:57:17,435 INFO L175 Difference]: Start difference. First operand has 65 places, 67 transitions, 367 flow. Second operand 5 states and 117 transitions. [2024-06-28 01:57:17,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 97 transitions, 651 flow [2024-06-28 01:57:17,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 610 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:17,442 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 422 flow [2024-06-28 01:57:17,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=422, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2024-06-28 01:57:17,445 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-06-28 01:57:17,445 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 422 flow [2024-06-28 01:57:17,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:17,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:17,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:17,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:57:17,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:17,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1541664862, now seen corresponding path program 1 times [2024-06-28 01:57:17,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:17,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081857259] [2024-06-28 01:57:17,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:17,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:19,947 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 01:57:19,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:19,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081857259] [2024-06-28 01:57:19,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081857259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:19,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:19,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:57:19,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885929933] [2024-06-28 01:57:19,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:19,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:57:19,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:19,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:57:19,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:57:19,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:57:19,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 422 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:19,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:19,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:57:19,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:21,545 INFO L124 PetriNetUnfolderBase]: 4200/6562 cut-off events. [2024-06-28 01:57:21,545 INFO L125 PetriNetUnfolderBase]: For 12246/12246 co-relation queries the response was YES. [2024-06-28 01:57:21,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19458 conditions, 6562 events. 4200/6562 cut-off events. For 12246/12246 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 37579 event pairs, 1622 based on Foata normal form. 8/6396 useless extension candidates. Maximal degree in co-relation 19433. Up to 5710 conditions per place. [2024-06-28 01:57:21,586 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 115 selfloop transitions, 17 changer transitions 0/138 dead transitions. [2024-06-28 01:57:21,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 138 transitions, 972 flow [2024-06-28 01:57:21,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:57:21,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:57:21,589 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 422 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:57:21,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 138 transitions, 972 flow [2024-06-28 01:57:21,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 138 transitions, 954 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:21,606 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 574 flow [2024-06-28 01:57:21,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=574, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2024-06-28 01:57:21,607 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2024-06-28 01:57:21,607 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 574 flow [2024-06-28 01:57:21,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:21,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:21,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:21,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:57:21,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:21,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:21,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1361575141, now seen corresponding path program 1 times [2024-06-28 01:57:21,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:21,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277376243] [2024-06-28 01:57:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:21,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:24,494 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 01:57:24,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:24,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277376243] [2024-06-28 01:57:24,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277376243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:24,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:24,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:24,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84567848] [2024-06-28 01:57:24,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:24,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:24,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:24,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:24,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:24,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:57:24,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 574 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:24,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:24,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:57:24,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:25,617 INFO L124 PetriNetUnfolderBase]: 4236/6656 cut-off events. [2024-06-28 01:57:25,617 INFO L125 PetriNetUnfolderBase]: For 16761/16779 co-relation queries the response was YES. [2024-06-28 01:57:25,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22052 conditions, 6656 events. 4236/6656 cut-off events. For 16761/16779 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 38477 event pairs, 1713 based on Foata normal form. 14/6480 useless extension candidates. Maximal degree in co-relation 22022. Up to 6006 conditions per place. [2024-06-28 01:57:25,666 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 110 selfloop transitions, 16 changer transitions 0/132 dead transitions. [2024-06-28 01:57:25,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 132 transitions, 987 flow [2024-06-28 01:57:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:57:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:57:25,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:57:25,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-28 01:57:25,668 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 574 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:57:25,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 132 transitions, 987 flow [2024-06-28 01:57:25,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 132 transitions, 983 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:25,685 INFO L231 Difference]: Finished difference. Result has 81 places, 94 transitions, 686 flow [2024-06-28 01:57:25,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=686, PETRI_PLACES=81, PETRI_TRANSITIONS=94} [2024-06-28 01:57:25,686 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-06-28 01:57:25,686 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 94 transitions, 686 flow [2024-06-28 01:57:25,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:25,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:25,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:25,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:57:25,687 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:25,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash -538143045, now seen corresponding path program 2 times [2024-06-28 01:57:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:25,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754025005] [2024-06-28 01:57:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:25,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:27,979 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 01:57:27,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:27,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754025005] [2024-06-28 01:57:27,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754025005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:27,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:27,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:27,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319399253] [2024-06-28 01:57:27,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:27,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:27,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:28,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:57:28,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 94 transitions, 686 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:28,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:28,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:57:28,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:29,579 INFO L124 PetriNetUnfolderBase]: 4911/7613 cut-off events. [2024-06-28 01:57:29,580 INFO L125 PetriNetUnfolderBase]: For 25804/25822 co-relation queries the response was YES. [2024-06-28 01:57:29,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27274 conditions, 7613 events. 4911/7613 cut-off events. For 25804/25822 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 44149 event pairs, 1704 based on Foata normal form. 14/7435 useless extension candidates. Maximal degree in co-relation 27240. Up to 6298 conditions per place. [2024-06-28 01:57:29,619 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 125 selfloop transitions, 34 changer transitions 0/165 dead transitions. [2024-06-28 01:57:29,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 165 transitions, 1340 flow [2024-06-28 01:57:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:57:29,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167173252279635 [2024-06-28 01:57:29,621 INFO L175 Difference]: Start difference. First operand has 81 places, 94 transitions, 686 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:57:29,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 165 transitions, 1340 flow [2024-06-28 01:57:29,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 165 transitions, 1306 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:29,665 INFO L231 Difference]: Finished difference. Result has 88 places, 114 transitions, 959 flow [2024-06-28 01:57:29,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=959, PETRI_PLACES=88, PETRI_TRANSITIONS=114} [2024-06-28 01:57:29,666 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-06-28 01:57:29,666 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 114 transitions, 959 flow [2024-06-28 01:57:29,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:29,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:29,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:29,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:57:29,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:29,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:29,668 INFO L85 PathProgramCache]: Analyzing trace with hash -538142859, now seen corresponding path program 1 times [2024-06-28 01:57:29,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:29,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674675157] [2024-06-28 01:57:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:29,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:31,745 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 01:57:31,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:31,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674675157] [2024-06-28 01:57:31,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674675157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:31,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:31,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:31,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856616411] [2024-06-28 01:57:31,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:31,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:31,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:31,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:31,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:31,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:57:31,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 114 transitions, 959 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:31,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:31,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:57:31,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:34,147 INFO L124 PetriNetUnfolderBase]: 5281/8181 cut-off events. [2024-06-28 01:57:34,148 INFO L125 PetriNetUnfolderBase]: For 38227/38251 co-relation queries the response was YES. [2024-06-28 01:57:34,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34054 conditions, 8181 events. 5281/8181 cut-off events. For 38227/38251 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 47773 event pairs, 1616 based on Foata normal form. 24/7991 useless extension candidates. Maximal degree in co-relation 34016. Up to 6851 conditions per place. [2024-06-28 01:57:34,188 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 132 selfloop transitions, 44 changer transitions 0/182 dead transitions. [2024-06-28 01:57:34,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 182 transitions, 1634 flow [2024-06-28 01:57:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:34,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:57:34,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:57:34,190 INFO L175 Difference]: Start difference. First operand has 88 places, 114 transitions, 959 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:57:34,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 182 transitions, 1634 flow [2024-06-28 01:57:34,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 182 transitions, 1584 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:34,248 INFO L231 Difference]: Finished difference. Result has 96 places, 127 transitions, 1167 flow [2024-06-28 01:57:34,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1167, PETRI_PLACES=96, PETRI_TRANSITIONS=127} [2024-06-28 01:57:34,249 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2024-06-28 01:57:34,249 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 127 transitions, 1167 flow [2024-06-28 01:57:34,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:34,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:34,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:34,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:57:34,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:34,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:34,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1491524171, now seen corresponding path program 2 times [2024-06-28 01:57:34,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:34,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812584959] [2024-06-28 01:57:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:34,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:36,467 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 01:57:36,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:36,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812584959] [2024-06-28 01:57:36,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812584959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:36,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:36,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:36,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893370167] [2024-06-28 01:57:36,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:36,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:36,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:36,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:36,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:36,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:57:36,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 127 transitions, 1167 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:36,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:36,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:57:36,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:38,572 INFO L124 PetriNetUnfolderBase]: 5475/8410 cut-off events. [2024-06-28 01:57:38,572 INFO L125 PetriNetUnfolderBase]: For 47920/47944 co-relation queries the response was YES. [2024-06-28 01:57:38,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37742 conditions, 8410 events. 5475/8410 cut-off events. For 47920/47944 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 48698 event pairs, 1654 based on Foata normal form. 24/8231 useless extension candidates. Maximal degree in co-relation 37700. Up to 6645 conditions per place. [2024-06-28 01:57:38,629 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 142 selfloop transitions, 51 changer transitions 0/199 dead transitions. [2024-06-28 01:57:38,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 199 transitions, 1955 flow [2024-06-28 01:57:38,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:38,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:57:38,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-06-28 01:57:38,631 INFO L175 Difference]: Start difference. First operand has 96 places, 127 transitions, 1167 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:57:38,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 199 transitions, 1955 flow [2024-06-28 01:57:38,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 199 transitions, 1906 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:38,704 INFO L231 Difference]: Finished difference. Result has 102 places, 141 transitions, 1440 flow [2024-06-28 01:57:38,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1440, PETRI_PLACES=102, PETRI_TRANSITIONS=141} [2024-06-28 01:57:38,704 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2024-06-28 01:57:38,704 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 141 transitions, 1440 flow [2024-06-28 01:57:38,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:38,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:38,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:38,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:57:38,705 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:38,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1491514251, now seen corresponding path program 1 times [2024-06-28 01:57:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:38,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140491706] [2024-06-28 01:57:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:38,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:41,684 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 01:57:41,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:41,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140491706] [2024-06-28 01:57:41,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140491706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:41,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:41,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:41,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021842512] [2024-06-28 01:57:41,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:41,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:41,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:41,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:41,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:41,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:57:41,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 141 transitions, 1440 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:57:41,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:41,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:57:41,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:43,907 INFO L124 PetriNetUnfolderBase]: 5695/8822 cut-off events. [2024-06-28 01:57:43,908 INFO L125 PetriNetUnfolderBase]: For 59280/59280 co-relation queries the response was YES. [2024-06-28 01:57:43,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41587 conditions, 8822 events. 5695/8822 cut-off events. For 59280/59280 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 52167 event pairs, 1778 based on Foata normal form. 16/8607 useless extension candidates. Maximal degree in co-relation 41541. Up to 7489 conditions per place. [2024-06-28 01:57:43,990 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 184 selfloop transitions, 22 changer transitions 0/212 dead transitions. [2024-06-28 01:57:43,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 212 transitions, 2216 flow [2024-06-28 01:57:43,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:43,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:57:43,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:57:43,993 INFO L175 Difference]: Start difference. First operand has 102 places, 141 transitions, 1440 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:57:43,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 212 transitions, 2216 flow [2024-06-28 01:57:44,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 212 transitions, 2168 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:44,068 INFO L231 Difference]: Finished difference. Result has 108 places, 143 transitions, 1478 flow [2024-06-28 01:57:44,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1478, PETRI_PLACES=108, PETRI_TRANSITIONS=143} [2024-06-28 01:57:44,069 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2024-06-28 01:57:44,069 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 143 transitions, 1478 flow [2024-06-28 01:57:44,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:57:44,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:44,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:44,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:57:44,070 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:44,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:44,070 INFO L85 PathProgramCache]: Analyzing trace with hash -740931752, now seen corresponding path program 1 times [2024-06-28 01:57:44,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:44,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598055644] [2024-06-28 01:57:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:44,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:46,687 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 01:57:46,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:46,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598055644] [2024-06-28 01:57:46,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598055644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:46,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:46,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:46,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901994009] [2024-06-28 01:57:46,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:46,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:46,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:46,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:46,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:46,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:57:46,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 143 transitions, 1478 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:57:46,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:46,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:57:46,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:48,797 INFO L124 PetriNetUnfolderBase]: 5762/8982 cut-off events. [2024-06-28 01:57:48,798 INFO L125 PetriNetUnfolderBase]: For 57462/57523 co-relation queries the response was YES. [2024-06-28 01:57:48,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41348 conditions, 8982 events. 5762/8982 cut-off events. For 57462/57523 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 53904 event pairs, 2100 based on Foata normal form. 38/8764 useless extension candidates. Maximal degree in co-relation 41299. Up to 7977 conditions per place. [2024-06-28 01:57:48,883 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 158 selfloop transitions, 48 changer transitions 0/212 dead transitions. [2024-06-28 01:57:48,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 212 transitions, 2261 flow [2024-06-28 01:57:48,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:48,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:57:48,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 01:57:48,885 INFO L175 Difference]: Start difference. First operand has 108 places, 143 transitions, 1478 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:57:48,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 212 transitions, 2261 flow [2024-06-28 01:57:48,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 212 transitions, 2209 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:49,002 INFO L231 Difference]: Finished difference. Result has 112 places, 154 transitions, 1732 flow [2024-06-28 01:57:49,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1732, PETRI_PLACES=112, PETRI_TRANSITIONS=154} [2024-06-28 01:57:49,004 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2024-06-28 01:57:49,005 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 154 transitions, 1732 flow [2024-06-28 01:57:49,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:57:49,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:49,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:49,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:57:49,005 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:49,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:49,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1106816701, now seen corresponding path program 1 times [2024-06-28 01:57:49,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:49,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476925665] [2024-06-28 01:57:49,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:49,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:51,847 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 01:57:51,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:51,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476925665] [2024-06-28 01:57:51,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476925665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:51,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:51,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:51,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275055372] [2024-06-28 01:57:51,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:51,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:51,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:51,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:51,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:51,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:57:51,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 154 transitions, 1732 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:57:51,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:51,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:57:51,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:54,111 INFO L124 PetriNetUnfolderBase]: 6104/9464 cut-off events. [2024-06-28 01:57:54,111 INFO L125 PetriNetUnfolderBase]: For 67266/67290 co-relation queries the response was YES. [2024-06-28 01:57:54,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45162 conditions, 9464 events. 6104/9464 cut-off events. For 67266/67290 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 56806 event pairs, 2011 based on Foata normal form. 24/9227 useless extension candidates. Maximal degree in co-relation 45110. Up to 8261 conditions per place. [2024-06-28 01:57:54,178 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 197 selfloop transitions, 34 changer transitions 0/237 dead transitions. [2024-06-28 01:57:54,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 237 transitions, 2702 flow [2024-06-28 01:57:54,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:57:54,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:57:54,180 INFO L175 Difference]: Start difference. First operand has 112 places, 154 transitions, 1732 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:57:54,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 237 transitions, 2702 flow [2024-06-28 01:57:54,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 237 transitions, 2641 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:54,290 INFO L231 Difference]: Finished difference. Result has 121 places, 173 transitions, 2042 flow [2024-06-28 01:57:54,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2042, PETRI_PLACES=121, PETRI_TRANSITIONS=173} [2024-06-28 01:57:54,291 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2024-06-28 01:57:54,291 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 173 transitions, 2042 flow [2024-06-28 01:57:54,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:57:54,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:54,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:57:54,292 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:54,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:54,292 INFO L85 PathProgramCache]: Analyzing trace with hash 493717766, now seen corresponding path program 2 times [2024-06-28 01:57:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457072907] [2024-06-28 01:57:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:54,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:57,001 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 01:57:57,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:57,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457072907] [2024-06-28 01:57:57,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457072907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:57,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:57,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:57,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903535066] [2024-06-28 01:57:57,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:57,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:57,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:57,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:57,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:57,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:57:57,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 173 transitions, 2042 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:57:57,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:57,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:57:57,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:58,866 INFO L124 PetriNetUnfolderBase]: 6107/9465 cut-off events. [2024-06-28 01:57:58,867 INFO L125 PetriNetUnfolderBase]: For 80332/80356 co-relation queries the response was YES. [2024-06-28 01:57:58,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48496 conditions, 9465 events. 6107/9465 cut-off events. For 80332/80356 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 56707 event pairs, 2100 based on Foata normal form. 18/9223 useless extension candidates. Maximal degree in co-relation 48439. Up to 8582 conditions per place. [2024-06-28 01:57:58,931 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 197 selfloop transitions, 22 changer transitions 0/225 dead transitions. [2024-06-28 01:57:58,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 225 transitions, 2678 flow [2024-06-28 01:57:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:58,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:57:58,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2024-06-28 01:57:58,932 INFO L175 Difference]: Start difference. First operand has 121 places, 173 transitions, 2042 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:57:58,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 225 transitions, 2678 flow [2024-06-28 01:57:59,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 225 transitions, 2600 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:59,066 INFO L231 Difference]: Finished difference. Result has 126 places, 176 transitions, 2070 flow [2024-06-28 01:57:59,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2070, PETRI_PLACES=126, PETRI_TRANSITIONS=176} [2024-06-28 01:57:59,066 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 73 predicate places. [2024-06-28 01:57:59,066 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 176 transitions, 2070 flow [2024-06-28 01:57:59,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:57:59,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:59,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:59,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:57:59,067 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:59,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:59,067 INFO L85 PathProgramCache]: Analyzing trace with hash 497436991, now seen corresponding path program 2 times [2024-06-28 01:57:59,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:59,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483947614] [2024-06-28 01:57:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:59,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:01,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:01,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483947614] [2024-06-28 01:58:01,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483947614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:01,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:01,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:01,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225465996] [2024-06-28 01:58:01,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:01,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:01,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:01,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:01,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:01,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:58:01,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 176 transitions, 2070 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:58:01,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:01,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:58:01,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:04,337 INFO L124 PetriNetUnfolderBase]: 7310/11162 cut-off events. [2024-06-28 01:58:04,337 INFO L125 PetriNetUnfolderBase]: For 99303/99327 co-relation queries the response was YES. [2024-06-28 01:58:04,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58746 conditions, 11162 events. 7310/11162 cut-off events. For 99303/99327 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 67256 event pairs, 1693 based on Foata normal form. 24/10913 useless extension candidates. Maximal degree in co-relation 58687. Up to 8205 conditions per place. [2024-06-28 01:58:04,433 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 217 selfloop transitions, 87 changer transitions 0/310 dead transitions. [2024-06-28 01:58:04,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 310 transitions, 3886 flow [2024-06-28 01:58:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:58:04,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-06-28 01:58:04,435 INFO L175 Difference]: Start difference. First operand has 126 places, 176 transitions, 2070 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:58:04,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 310 transitions, 3886 flow [2024-06-28 01:58:04,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 310 transitions, 3812 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:04,664 INFO L231 Difference]: Finished difference. Result has 131 places, 219 transitions, 2818 flow [2024-06-28 01:58:04,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2818, PETRI_PLACES=131, PETRI_TRANSITIONS=219} [2024-06-28 01:58:04,664 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2024-06-28 01:58:04,665 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 219 transitions, 2818 flow [2024-06-28 01:58:04,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:58:04,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:04,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:04,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:58:04,665 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:04,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:04,666 INFO L85 PathProgramCache]: Analyzing trace with hash 497436836, now seen corresponding path program 3 times [2024-06-28 01:58:04,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:04,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156970406] [2024-06-28 01:58:04,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:04,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:06,705 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 01:58:06,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:06,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156970406] [2024-06-28 01:58:06,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156970406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:06,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:06,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:06,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683610372] [2024-06-28 01:58:06,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:06,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:06,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:06,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:06,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:06,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:58:06,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 219 transitions, 2818 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:58:06,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:06,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:58:06,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:08,992 INFO L124 PetriNetUnfolderBase]: 7314/11251 cut-off events. [2024-06-28 01:58:08,993 INFO L125 PetriNetUnfolderBase]: For 123564/123588 co-relation queries the response was YES. [2024-06-28 01:58:09,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65729 conditions, 11251 events. 7314/11251 cut-off events. For 123564/123588 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 68470 event pairs, 2050 based on Foata normal form. 18/10968 useless extension candidates. Maximal degree in co-relation 65667. Up to 10197 conditions per place. [2024-06-28 01:58:09,092 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 240 selfloop transitions, 33 changer transitions 0/279 dead transitions. [2024-06-28 01:58:09,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 279 transitions, 3759 flow [2024-06-28 01:58:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:09,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 01:58:09,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449468085106383 [2024-06-28 01:58:09,094 INFO L175 Difference]: Start difference. First operand has 131 places, 219 transitions, 2818 flow. Second operand 8 states and 169 transitions. [2024-06-28 01:58:09,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 279 transitions, 3759 flow [2024-06-28 01:58:09,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 279 transitions, 3617 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:09,571 INFO L231 Difference]: Finished difference. Result has 138 places, 237 transitions, 3060 flow [2024-06-28 01:58:09,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3060, PETRI_PLACES=138, PETRI_TRANSITIONS=237} [2024-06-28 01:58:09,572 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 85 predicate places. [2024-06-28 01:58:09,572 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 237 transitions, 3060 flow [2024-06-28 01:58:09,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:58:09,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:09,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:09,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:58:09,573 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:09,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:09,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1106966431, now seen corresponding path program 3 times [2024-06-28 01:58:09,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:09,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433760078] [2024-06-28 01:58:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:09,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:11,531 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 01:58:11,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:11,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433760078] [2024-06-28 01:58:11,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433760078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:11,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:11,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:11,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890216951] [2024-06-28 01:58:11,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:11,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:11,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:11,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:11,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:11,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:58:11,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 237 transitions, 3060 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:58:11,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:11,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:58:11,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:14,379 INFO L124 PetriNetUnfolderBase]: 7574/11624 cut-off events. [2024-06-28 01:58:14,379 INFO L125 PetriNetUnfolderBase]: For 128858/128882 co-relation queries the response was YES. [2024-06-28 01:58:14,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67701 conditions, 11624 events. 7574/11624 cut-off events. For 128858/128882 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 70750 event pairs, 1982 based on Foata normal form. 32/11349 useless extension candidates. Maximal degree in co-relation 67635. Up to 10224 conditions per place. [2024-06-28 01:58:14,673 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 270 selfloop transitions, 52 changer transitions 0/328 dead transitions. [2024-06-28 01:58:14,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 328 transitions, 4379 flow [2024-06-28 01:58:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-28 01:58:14,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47044917257683216 [2024-06-28 01:58:14,678 INFO L175 Difference]: Start difference. First operand has 138 places, 237 transitions, 3060 flow. Second operand 9 states and 199 transitions. [2024-06-28 01:58:14,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 328 transitions, 4379 flow [2024-06-28 01:58:14,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 328 transitions, 4282 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:14,886 INFO L231 Difference]: Finished difference. Result has 146 places, 269 transitions, 3579 flow [2024-06-28 01:58:14,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3579, PETRI_PLACES=146, PETRI_TRANSITIONS=269} [2024-06-28 01:58:14,887 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2024-06-28 01:58:14,887 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 269 transitions, 3579 flow [2024-06-28 01:58:14,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:58:14,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:14,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:14,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:58:14,888 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:14,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:14,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1007392971, now seen corresponding path program 4 times [2024-06-28 01:58:14,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:14,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866251847] [2024-06-28 01:58:14,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:14,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:17,285 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 01:58:17,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:17,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866251847] [2024-06-28 01:58:17,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866251847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:17,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:17,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:17,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215278437] [2024-06-28 01:58:17,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:17,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:17,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:17,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:17,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:17,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:58:17,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 269 transitions, 3579 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:58:17,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:17,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:58:17,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:20,479 INFO L124 PetriNetUnfolderBase]: 8307/12604 cut-off events. [2024-06-28 01:58:20,479 INFO L125 PetriNetUnfolderBase]: For 161971/161995 co-relation queries the response was YES. [2024-06-28 01:58:20,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80274 conditions, 12604 events. 8307/12604 cut-off events. For 161971/161995 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 76355 event pairs, 1721 based on Foata normal form. 24/12335 useless extension candidates. Maximal degree in co-relation 80204. Up to 9743 conditions per place. [2024-06-28 01:58:20,597 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 275 selfloop transitions, 158 changer transitions 0/439 dead transitions. [2024-06-28 01:58:20,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 439 transitions, 6077 flow [2024-06-28 01:58:20,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:58:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:58:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2024-06-28 01:58:20,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183752417794971 [2024-06-28 01:58:20,602 INFO L175 Difference]: Start difference. First operand has 146 places, 269 transitions, 3579 flow. Second operand 11 states and 268 transitions. [2024-06-28 01:58:20,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 439 transitions, 6077 flow [2024-06-28 01:58:20,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 439 transitions, 5917 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:20,974 INFO L231 Difference]: Finished difference. Result has 158 places, 350 transitions, 5078 flow [2024-06-28 01:58:20,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3419, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5078, PETRI_PLACES=158, PETRI_TRANSITIONS=350} [2024-06-28 01:58:20,974 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 105 predicate places. [2024-06-28 01:58:20,974 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 350 transitions, 5078 flow [2024-06-28 01:58:20,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:58:20,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:20,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:20,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:58:20,975 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:20,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash 999113181, now seen corresponding path program 5 times [2024-06-28 01:58:20,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:20,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254032108] [2024-06-28 01:58:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:23,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:23,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:23,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254032108] [2024-06-28 01:58:23,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254032108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:23,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:23,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:23,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042921039] [2024-06-28 01:58:23,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:23,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:23,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:23,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:23,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:23,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:58:23,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 350 transitions, 5078 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:58:23,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:23,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:58:23,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:26,595 INFO L124 PetriNetUnfolderBase]: 8568/13098 cut-off events. [2024-06-28 01:58:26,595 INFO L125 PetriNetUnfolderBase]: For 194323/194347 co-relation queries the response was YES. [2024-06-28 01:58:26,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90158 conditions, 13098 events. 8568/13098 cut-off events. For 194323/194347 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 80550 event pairs, 2060 based on Foata normal form. 25/12783 useless extension candidates. Maximal degree in co-relation 90081. Up to 11476 conditions per place. [2024-06-28 01:58:26,730 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 398 selfloop transitions, 54 changer transitions 0/458 dead transitions. [2024-06-28 01:58:26,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 458 transitions, 6965 flow [2024-06-28 01:58:26,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:26,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 01:58:26,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-28 01:58:26,731 INFO L175 Difference]: Start difference. First operand has 158 places, 350 transitions, 5078 flow. Second operand 9 states and 210 transitions. [2024-06-28 01:58:26,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 458 transitions, 6965 flow [2024-06-28 01:58:27,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 458 transitions, 6587 flow, removed 188 selfloop flow, removed 1 redundant places. [2024-06-28 01:58:27,284 INFO L231 Difference]: Finished difference. Result has 168 places, 369 transitions, 5264 flow [2024-06-28 01:58:27,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4732, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5264, PETRI_PLACES=168, PETRI_TRANSITIONS=369} [2024-06-28 01:58:27,285 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 115 predicate places. [2024-06-28 01:58:27,285 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 369 transitions, 5264 flow [2024-06-28 01:58:27,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 01:58:27,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:27,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:27,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:58:27,285 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:27,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:27,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1423455408, now seen corresponding path program 1 times [2024-06-28 01:58:27,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:27,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385308588] [2024-06-28 01:58:27,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:27,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:28,350 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 01:58:28,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:28,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385308588] [2024-06-28 01:58:28,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385308588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:28,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:28,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:58:28,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148611191] [2024-06-28 01:58:28,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:28,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:58:28,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:28,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:58:28,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:58:28,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:58:28,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 369 transitions, 5264 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:28,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:28,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:58:28,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:31,292 INFO L124 PetriNetUnfolderBase]: 8562/13109 cut-off events. [2024-06-28 01:58:31,293 INFO L125 PetriNetUnfolderBase]: For 208389/208389 co-relation queries the response was YES. [2024-06-28 01:58:31,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91100 conditions, 13109 events. 8562/13109 cut-off events. For 208389/208389 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 80987 event pairs, 2057 based on Foata normal form. 2/12766 useless extension candidates. Maximal degree in co-relation 91018. Up to 12043 conditions per place. [2024-06-28 01:58:31,410 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 378 selfloop transitions, 14 changer transitions 0/398 dead transitions. [2024-06-28 01:58:31,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 398 transitions, 6254 flow [2024-06-28 01:58:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:58:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:58:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-28 01:58:31,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553191489361702 [2024-06-28 01:58:31,412 INFO L175 Difference]: Start difference. First operand has 168 places, 369 transitions, 5264 flow. Second operand 5 states and 107 transitions. [2024-06-28 01:58:31,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 398 transitions, 6254 flow [2024-06-28 01:58:31,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 398 transitions, 6077 flow, removed 78 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:31,906 INFO L231 Difference]: Finished difference. Result has 171 places, 377 transitions, 5255 flow [2024-06-28 01:58:31,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5089, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5255, PETRI_PLACES=171, PETRI_TRANSITIONS=377} [2024-06-28 01:58:31,906 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 118 predicate places. [2024-06-28 01:58:31,907 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 377 transitions, 5255 flow [2024-06-28 01:58:31,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:31,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:31,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:31,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:58:31,907 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:31,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:31,908 INFO L85 PathProgramCache]: Analyzing trace with hash -235873542, now seen corresponding path program 1 times [2024-06-28 01:58:31,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:31,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808150722] [2024-06-28 01:58:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:31,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:34,404 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 01:58:34,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:34,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808150722] [2024-06-28 01:58:34,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808150722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:34,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:34,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:34,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635010876] [2024-06-28 01:58:34,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:34,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:34,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:34,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:34,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:34,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:58:34,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 377 transitions, 5255 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:34,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:34,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:58:34,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:37,832 INFO L124 PetriNetUnfolderBase]: 8670/13313 cut-off events. [2024-06-28 01:58:37,832 INFO L125 PetriNetUnfolderBase]: For 219987/220098 co-relation queries the response was YES. [2024-06-28 01:58:37,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92447 conditions, 13313 events. 8670/13313 cut-off events. For 219987/220098 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 82768 event pairs, 1690 based on Foata normal form. 72/13022 useless extension candidates. Maximal degree in co-relation 92362. Up to 11739 conditions per place. [2024-06-28 01:58:37,952 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 368 selfloop transitions, 80 changer transitions 0/454 dead transitions. [2024-06-28 01:58:37,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 454 transitions, 6665 flow [2024-06-28 01:58:37,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:37,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:58:37,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:58:37,953 INFO L175 Difference]: Start difference. First operand has 171 places, 377 transitions, 5255 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:58:37,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 454 transitions, 6665 flow [2024-06-28 01:58:38,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 454 transitions, 6626 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:38,480 INFO L231 Difference]: Finished difference. Result has 178 places, 382 transitions, 5542 flow [2024-06-28 01:58:38,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5216, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5542, PETRI_PLACES=178, PETRI_TRANSITIONS=382} [2024-06-28 01:58:38,480 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 125 predicate places. [2024-06-28 01:58:38,480 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 382 transitions, 5542 flow [2024-06-28 01:58:38,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:38,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:38,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:38,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:58:38,481 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:38,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1877412870, now seen corresponding path program 2 times [2024-06-28 01:58:38,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:38,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371419526] [2024-06-28 01:58:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:38,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:40,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:40,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371419526] [2024-06-28 01:58:40,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371419526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:40,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:40,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:40,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657972346] [2024-06-28 01:58:40,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:40,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:40,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:40,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:40,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:40,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:58:40,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 382 transitions, 5542 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:40,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:40,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:58:40,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:44,259 INFO L124 PetriNetUnfolderBase]: 8720/13393 cut-off events. [2024-06-28 01:58:44,259 INFO L125 PetriNetUnfolderBase]: For 238655/238766 co-relation queries the response was YES. [2024-06-28 01:58:44,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94619 conditions, 13393 events. 8720/13393 cut-off events. For 238655/238766 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 83396 event pairs, 1992 based on Foata normal form. 72/13100 useless extension candidates. Maximal degree in co-relation 94531. Up to 11958 conditions per place. [2024-06-28 01:58:44,393 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 369 selfloop transitions, 78 changer transitions 0/453 dead transitions. [2024-06-28 01:58:44,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 453 transitions, 6790 flow [2024-06-28 01:58:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:58:44,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-28 01:58:44,395 INFO L175 Difference]: Start difference. First operand has 178 places, 382 transitions, 5542 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:58:44,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 453 transitions, 6790 flow [2024-06-28 01:58:45,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 453 transitions, 6593 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 01:58:45,028 INFO L231 Difference]: Finished difference. Result has 182 places, 384 transitions, 5578 flow [2024-06-28 01:58:45,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5367, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5578, PETRI_PLACES=182, PETRI_TRANSITIONS=384} [2024-06-28 01:58:45,029 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 129 predicate places. [2024-06-28 01:58:45,029 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 384 transitions, 5578 flow [2024-06-28 01:58:45,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:45,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:45,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:45,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:58:45,029 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:45,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1877412746, now seen corresponding path program 1 times [2024-06-28 01:58:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099906600] [2024-06-28 01:58:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:45,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:47,463 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 01:58:47,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:47,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099906600] [2024-06-28 01:58:47,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099906600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:47,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:47,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:47,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567337507] [2024-06-28 01:58:47,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:47,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:47,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:47,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:47,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:58:47,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 384 transitions, 5578 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:47,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:47,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:58:47,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:51,590 INFO L124 PetriNetUnfolderBase]: 9650/14422 cut-off events. [2024-06-28 01:58:51,590 INFO L125 PetriNetUnfolderBase]: For 261620/261731 co-relation queries the response was YES. [2024-06-28 01:58:51,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104837 conditions, 14422 events. 9650/14422 cut-off events. For 261620/261731 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 87090 event pairs, 1556 based on Foata normal form. 76/14211 useless extension candidates. Maximal degree in co-relation 104747. Up to 9900 conditions per place. [2024-06-28 01:58:51,785 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 361 selfloop transitions, 158 changer transitions 0/525 dead transitions. [2024-06-28 01:58:51,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 525 transitions, 8163 flow [2024-06-28 01:58:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-28 01:58:51,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5768321513002365 [2024-06-28 01:58:51,787 INFO L175 Difference]: Start difference. First operand has 182 places, 384 transitions, 5578 flow. Second operand 9 states and 244 transitions. [2024-06-28 01:58:51,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 525 transitions, 8163 flow [2024-06-28 01:58:52,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 525 transitions, 7986 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:52,902 INFO L231 Difference]: Finished difference. Result has 187 places, 408 transitions, 6295 flow [2024-06-28 01:58:52,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5401, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6295, PETRI_PLACES=187, PETRI_TRANSITIONS=408} [2024-06-28 01:58:52,903 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 134 predicate places. [2024-06-28 01:58:52,903 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 408 transitions, 6295 flow [2024-06-28 01:58:52,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:52,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:52,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:52,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:58:52,903 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:52,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:52,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1763789066, now seen corresponding path program 2 times [2024-06-28 01:58:52,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:52,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952409926] [2024-06-28 01:58:52,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:52,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:57,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:57,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:57,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952409926] [2024-06-28 01:58:57,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952409926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:57,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:57,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:57,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295849410] [2024-06-28 01:58:57,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:57,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:57,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:57,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:57,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:57,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:58:57,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 408 transitions, 6295 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:57,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:57,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:58:57,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:01,726 INFO L124 PetriNetUnfolderBase]: 9877/15044 cut-off events. [2024-06-28 01:59:01,726 INFO L125 PetriNetUnfolderBase]: For 302613/302637 co-relation queries the response was YES. [2024-06-28 01:59:01,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113091 conditions, 15044 events. 9877/15044 cut-off events. For 302613/302637 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 94264 event pairs, 1973 based on Foata normal form. 24/14680 useless extension candidates. Maximal degree in co-relation 112998. Up to 13316 conditions per place. [2024-06-28 01:59:01,915 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 453 selfloop transitions, 43 changer transitions 0/502 dead transitions. [2024-06-28 01:59:01,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 502 transitions, 8020 flow [2024-06-28 01:59:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:01,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-28 01:59:01,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2024-06-28 01:59:01,917 INFO L175 Difference]: Start difference. First operand has 187 places, 408 transitions, 6295 flow. Second operand 9 states and 218 transitions. [2024-06-28 01:59:01,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 502 transitions, 8020 flow [2024-06-28 01:59:02,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 502 transitions, 7809 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:02,932 INFO L231 Difference]: Finished difference. Result has 195 places, 424 transitions, 6441 flow [2024-06-28 01:59:02,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6084, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6441, PETRI_PLACES=195, PETRI_TRANSITIONS=424} [2024-06-28 01:59:02,933 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 142 predicate places. [2024-06-28 01:59:02,933 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 424 transitions, 6441 flow [2024-06-28 01:59:02,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:02,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:02,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:02,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:59:02,933 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:02,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:02,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1874616360, now seen corresponding path program 3 times [2024-06-28 01:59:02,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:02,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003653071] [2024-06-28 01:59:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:02,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:06,639 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 01:59:06,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:06,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003653071] [2024-06-28 01:59:06,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003653071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:06,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:06,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:06,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860968118] [2024-06-28 01:59:06,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:06,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:06,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:06,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:59:06,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 424 transitions, 6441 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:06,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:06,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:59:06,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:10,863 INFO L124 PetriNetUnfolderBase]: 9882/15096 cut-off events. [2024-06-28 01:59:10,864 INFO L125 PetriNetUnfolderBase]: For 311734/311758 co-relation queries the response was YES. [2024-06-28 01:59:10,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114579 conditions, 15096 events. 9882/15096 cut-off events. For 311734/311758 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 95178 event pairs, 2162 based on Foata normal form. 20/14713 useless extension candidates. Maximal degree in co-relation 114482. Up to 13735 conditions per place. [2024-06-28 01:59:11,165 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 454 selfloop transitions, 27 changer transitions 0/487 dead transitions. [2024-06-28 01:59:11,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 487 transitions, 7718 flow [2024-06-28 01:59:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:11,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:11,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:59:11,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-28 01:59:11,168 INFO L175 Difference]: Start difference. First operand has 195 places, 424 transitions, 6441 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:59:11,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 487 transitions, 7718 flow [2024-06-28 01:59:11,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 487 transitions, 7565 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:11,943 INFO L231 Difference]: Finished difference. Result has 198 places, 426 transitions, 6426 flow [2024-06-28 01:59:11,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6291, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6426, PETRI_PLACES=198, PETRI_TRANSITIONS=426} [2024-06-28 01:59:11,944 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-06-28 01:59:11,944 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 426 transitions, 6426 flow [2024-06-28 01:59:11,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:11,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:11,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:11,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:59:11,945 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:11,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:11,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1874616236, now seen corresponding path program 3 times [2024-06-28 01:59:11,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:11,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951814275] [2024-06-28 01:59:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:11,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:15,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:15,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951814275] [2024-06-28 01:59:15,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951814275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:15,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:15,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:15,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290784705] [2024-06-28 01:59:15,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:15,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:15,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:15,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:15,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:15,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:59:15,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 426 transitions, 6426 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:15,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:15,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:59:15,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:19,619 INFO L124 PetriNetUnfolderBase]: 10205/15496 cut-off events. [2024-06-28 01:59:19,620 INFO L125 PetriNetUnfolderBase]: For 331745/331769 co-relation queries the response was YES. [2024-06-28 01:59:19,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117953 conditions, 15496 events. 10205/15496 cut-off events. For 331745/331769 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 97119 event pairs, 2045 based on Foata normal form. 24/15130 useless extension candidates. Maximal degree in co-relation 117855. Up to 13424 conditions per place. [2024-06-28 01:59:19,808 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 462 selfloop transitions, 49 changer transitions 0/517 dead transitions. [2024-06-28 01:59:19,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 517 transitions, 8277 flow [2024-06-28 01:59:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:19,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 01:59:19,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-28 01:59:19,810 INFO L175 Difference]: Start difference. First operand has 198 places, 426 transitions, 6426 flow. Second operand 9 states and 220 transitions. [2024-06-28 01:59:19,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 517 transitions, 8277 flow [2024-06-28 01:59:20,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 517 transitions, 8153 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:20,880 INFO L231 Difference]: Finished difference. Result has 202 places, 436 transitions, 6640 flow [2024-06-28 01:59:20,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6309, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6640, PETRI_PLACES=202, PETRI_TRANSITIONS=436} [2024-06-28 01:59:20,881 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 149 predicate places. [2024-06-28 01:59:20,881 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 436 transitions, 6640 flow [2024-06-28 01:59:20,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:20,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:20,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:20,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:59:20,881 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:20,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1759140492, now seen corresponding path program 1 times [2024-06-28 01:59:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:20,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44838369] [2024-06-28 01:59:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:20,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:23,791 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 01:59:23,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:23,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44838369] [2024-06-28 01:59:23,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44838369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:23,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:23,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:23,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978647106] [2024-06-28 01:59:23,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:23,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:23,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:23,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:23,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:23,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:59:23,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 436 transitions, 6640 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:23,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:23,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:59:23,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:28,983 INFO L124 PetriNetUnfolderBase]: 10483/15906 cut-off events. [2024-06-28 01:59:28,983 INFO L125 PetriNetUnfolderBase]: For 364672/364696 co-relation queries the response was YES. [2024-06-28 01:59:29,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122692 conditions, 15906 events. 10483/15906 cut-off events. For 364672/364696 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 99911 event pairs, 1862 based on Foata normal form. 32/15548 useless extension candidates. Maximal degree in co-relation 122592. Up to 13164 conditions per place. [2024-06-28 01:59:29,163 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 427 selfloop transitions, 83 changer transitions 0/516 dead transitions. [2024-06-28 01:59:29,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 516 transitions, 8319 flow [2024-06-28 01:59:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:29,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:59:29,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-28 01:59:29,165 INFO L175 Difference]: Start difference. First operand has 202 places, 436 transitions, 6640 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:59:29,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 516 transitions, 8319 flow [2024-06-28 01:59:30,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 516 transitions, 8150 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-28 01:59:30,310 INFO L231 Difference]: Finished difference. Result has 206 places, 438 transitions, 6720 flow [2024-06-28 01:59:30,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6471, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6720, PETRI_PLACES=206, PETRI_TRANSITIONS=438} [2024-06-28 01:59:30,310 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 153 predicate places. [2024-06-28 01:59:30,311 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 438 transitions, 6720 flow [2024-06-28 01:59:30,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:30,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:30,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:30,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:59:30,311 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:30,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:30,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1759140740, now seen corresponding path program 1 times [2024-06-28 01:59:30,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:30,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824517432] [2024-06-28 01:59:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:30,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:32,880 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 01:59:32,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:32,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824517432] [2024-06-28 01:59:32,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824517432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:32,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:32,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:32,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500400037] [2024-06-28 01:59:32,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:32,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:32,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:32,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:32,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:32,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 47 [2024-06-28 01:59:32,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 438 transitions, 6720 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:32,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:32,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 47 [2024-06-28 01:59:32,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:37,987 INFO L124 PetriNetUnfolderBase]: 10658/16229 cut-off events. [2024-06-28 01:59:37,987 INFO L125 PetriNetUnfolderBase]: For 369151/369175 co-relation queries the response was YES. [2024-06-28 01:59:38,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125632 conditions, 16229 events. 10658/16229 cut-off events. For 369151/369175 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 102670 event pairs, 2059 based on Foata normal form. 24/15835 useless extension candidates. Maximal degree in co-relation 125530. Up to 13625 conditions per place. [2024-06-28 01:59:38,159 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 423 selfloop transitions, 102 changer transitions 0/531 dead transitions. [2024-06-28 01:59:38,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 531 transitions, 8652 flow [2024-06-28 01:59:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:59:38,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 01:59:38,160 INFO L175 Difference]: Start difference. First operand has 206 places, 438 transitions, 6720 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:59:38,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 531 transitions, 8652 flow [2024-06-28 01:59:38,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 531 transitions, 8464 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:59:38,998 INFO L231 Difference]: Finished difference. Result has 208 places, 451 transitions, 7066 flow [2024-06-28 01:59:38,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6532, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7066, PETRI_PLACES=208, PETRI_TRANSITIONS=451} [2024-06-28 01:59:38,999 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 155 predicate places. [2024-06-28 01:59:38,999 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 451 transitions, 7066 flow [2024-06-28 01:59:38,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:38,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:38,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:39,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:59:39,000 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:39,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:39,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1759147436, now seen corresponding path program 4 times [2024-06-28 01:59:39,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:39,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455515389] [2024-06-28 01:59:39,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:39,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat