./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_rmo.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/thin002_rmo.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/thin002_rmo.i ./goblint.2024-05-21_14-57-05.files/protection/thin002_rmo.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 13:37:37,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:37:37,519 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:37:37,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:37:37,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:37:37,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:37:37,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:37:37,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:37:37,549 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:37:37,552 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:37:37,552 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:37:37,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:37:37,554 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:37:37,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:37:37,555 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:37:37,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:37:37,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:37:37,555 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:37:37,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:37:37,556 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:37:37,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:37:37,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:37:37,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:37:37,558 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:37:37,558 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:37:37,558 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:37:37,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:37:37,558 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:37:37,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:37:37,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:37:37,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:37:37,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:37:37,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:37:37,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:37:37,561 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:37:37,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:37:37,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:37:37,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:37:37,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:37:37,562 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:37:37,562 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:37:37,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:37:37,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:37:37,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:37:37,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:37:37,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:37:37,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:37:37,808 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:37:37,808 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:37:37,809 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/thin002_rmo.yml/witness.yml [2024-06-14 13:37:37,995 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:37:37,996 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:37:37,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_rmo.i [2024-06-14 13:37:39,048 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:37:39,247 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:37:39,249 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_rmo.i [2024-06-14 13:37:39,261 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dfad41b9/7a73d5cdb90f4ae5a2c0635cb682d351/FLAG159eaa919 [2024-06-14 13:37:39,272 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0dfad41b9/7a73d5cdb90f4ae5a2c0635cb682d351 [2024-06-14 13:37:39,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:37:39,273 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:37:39,274 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:37:39,274 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:37:39,278 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:37:39,279 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:37:37" (1/2) ... [2024-06-14 13:37:39,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a6014b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:37:39, skipping insertion in model container [2024-06-14 13:37:39,280 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:37:37" (1/2) ... [2024-06-14 13:37:39,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7050f4cc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:37:39, skipping insertion in model container [2024-06-14 13:37:39,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:37:39" (2/2) ... [2024-06-14 13:37:39,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a6014b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39, skipping insertion in model container [2024-06-14 13:37:39,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:37:39" (2/2) ... [2024-06-14 13:37:39,281 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:37:39,452 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:37:39,453 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (((0 <= *__unbuffered_p0_EAX$read_delayed_var && *__unbuffered_p0_EAX$read_delayed_var <= 1) && __unbuffered_p0_EAX$read_delayed_var == & a) && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || a$w_buff0_used == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || a$w_buff1_used == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-14 13:37:39,453 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (((0 <= *__unbuffered_p0_EAX$read_delayed_var && *__unbuffered_p0_EAX$read_delayed_var <= 1) && __unbuffered_p0_EAX$read_delayed_var == & a) && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || a$w_buff0_used == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || a$w_buff1_used == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-14 13:37:39,453 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (((0 <= *__unbuffered_p0_EAX$read_delayed_var && *__unbuffered_p0_EAX$read_delayed_var <= 1) && __unbuffered_p0_EAX$read_delayed_var == & a) && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || a$w_buff0_used == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || a$w_buff1_used == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-14 13:37:39,453 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= a && a <= 1) && (a == 0 || a == 1)))) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p3_EAX && __unbuffered_p3_EAX <= 1) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || ((0 <= a$mem_tmp && a$mem_tmp <= 1) && (a$mem_tmp == 0 || a$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (((0 <= *__unbuffered_p0_EAX$read_delayed_var && *__unbuffered_p0_EAX$read_delayed_var <= 1) && __unbuffered_p0_EAX$read_delayed_var == & a) && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || a$w_buff0_used == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || a$w_buff1_used == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-06-14 13:37:39,453 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:37:39,454 INFO L106 edCorrectnessWitness]: ghost_update [L861-L861] multithreaded = 1; [2024-06-14 13:37:39,486 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:37:39,797 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:37:39,808 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 13:37:39,961 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:37:39,995 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:37:39,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39 WrapperNode [2024-06-14 13:37:39,996 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:37:39,996 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:37:39,997 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:37:39,997 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:37:40,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,051 INFO L138 Inliner]: procedures = 176, calls = 97, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 248 [2024-06-14 13:37:40,052 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:37:40,052 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:37:40,052 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:37:40,053 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:37:40,063 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,103 INFO L175 MemorySlicer]: Split 47 memory accesses to 2 slices as follows [2, 45]. 96 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-14 13:37:40,104 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,104 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,114 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,120 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:37:40,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:37:40,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:37:40,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:37:40,125 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (1/1) ... [2024-06-14 13:37:40,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:37:40,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:37:40,157 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) [2024-06-14 13:37:40,163 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 [2024-06-14 13:37:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-14 13:37:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-14 13:37:40,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-14 13:37:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-14 13:37:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 13:37:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:37:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 13:37:40,206 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 13:37:40,206 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 13:37:40,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 13:37:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-14 13:37:40,207 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-14 13:37:40,207 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-14 13:37:40,208 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-14 13:37:40,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:37:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 13:37:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 13:37:40,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:37:40,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:37:40,211 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 13:37:40,343 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:37:40,345 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:37:40,797 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:37:40,797 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:37:41,119 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:37:41,128 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 13:37:41,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:37:41 BoogieIcfgContainer [2024-06-14 13:37:41,129 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:37:41,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:37:41,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:37:41,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:37:41,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:37:37" (1/4) ... [2024-06-14 13:37:41,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704320af and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:37:41, skipping insertion in model container [2024-06-14 13:37:41,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:37:39" (2/4) ... [2024-06-14 13:37:41,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704320af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:37:41, skipping insertion in model container [2024-06-14 13:37:41,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:37:39" (3/4) ... [2024-06-14 13:37:41,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704320af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:37:41, skipping insertion in model container [2024-06-14 13:37:41,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:37:41" (4/4) ... [2024-06-14 13:37:41,136 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_rmo.i [2024-06-14 13:37:41,150 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:37:41,151 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-14 13:37:41,151 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:37:41,219 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 13:37:41,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 55 transitions, 126 flow [2024-06-14 13:37:41,289 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2024-06-14 13:37:41,289 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:37:41,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 13:37:41,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 55 transitions, 126 flow [2024-06-14 13:37:41,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 45 transitions, 102 flow [2024-06-14 13:37:41,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:37:41,315 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;@794c1821, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:37:41,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-14 13:37:41,322 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:37:41,322 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 13:37:41,322 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:37:41,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:41,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:37:41,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:37:41,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:41,329 INFO L85 PathProgramCache]: Analyzing trace with hash 596295949, now seen corresponding path program 1 times [2024-06-14 13:37:41,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:41,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527894425] [2024-06-14 13:37:41,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:41,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:43,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:43,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527894425] [2024-06-14 13:37:43,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527894425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:43,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:43,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:37:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479229152] [2024-06-14 13:37:43,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:43,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:37:43,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:43,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:37:43,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:37:43,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-14 13:37:43,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:43,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:43,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-14 13:37:43,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:44,952 INFO L124 PetriNetUnfolderBase]: 4406/6337 cut-off events. [2024-06-14 13:37:44,952 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2024-06-14 13:37:44,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12685 conditions, 6337 events. 4406/6337 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 34639 event pairs, 3188 based on Foata normal form. 1/6204 useless extension candidates. Maximal degree in co-relation 12669. Up to 6114 conditions per place. [2024-06-14 13:37:45,047 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 47 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2024-06-14 13:37:45,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 249 flow [2024-06-14 13:37:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:37:45,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:37:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-14 13:37:45,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593939393939394 [2024-06-14 13:37:45,071 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 102 flow. Second operand 3 states and 98 transitions. [2024-06-14 13:37:45,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 249 flow [2024-06-14 13:37:45,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 242 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 13:37:45,089 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 137 flow [2024-06-14 13:37:45,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-14 13:37:45,124 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -1 predicate places. [2024-06-14 13:37:45,124 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 137 flow [2024-06-14 13:37:45,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:45,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:45,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:45,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:37:45,125 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:37:45,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:45,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1809815020, now seen corresponding path program 1 times [2024-06-14 13:37:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:45,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047241073] [2024-06-14 13:37:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:45,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:48,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:48,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047241073] [2024-06-14 13:37:48,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047241073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:48,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:48,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 13:37:48,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469717709] [2024-06-14 13:37:48,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:48,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 13:37:48,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 13:37:48,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-14 13:37:48,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 55 [2024-06-14 13:37:48,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:48,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:48,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 55 [2024-06-14 13:37:48,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:49,377 INFO L124 PetriNetUnfolderBase]: 4396/6308 cut-off events. [2024-06-14 13:37:49,378 INFO L125 PetriNetUnfolderBase]: For 1199/1209 co-relation queries the response was YES. [2024-06-14 13:37:49,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14564 conditions, 6308 events. 4396/6308 cut-off events. For 1199/1209 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 33987 event pairs, 2767 based on Foata normal form. 10/6314 useless extension candidates. Maximal degree in co-relation 14549. Up to 6073 conditions per place. [2024-06-14 13:37:49,409 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 60 selfloop transitions, 9 changer transitions 0/79 dead transitions. [2024-06-14 13:37:49,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 353 flow [2024-06-14 13:37:49,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:37:49,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:37:49,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-14 13:37:49,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863636363636363 [2024-06-14 13:37:49,412 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 137 flow. Second operand 4 states and 129 transitions. [2024-06-14 13:37:49,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 353 flow [2024-06-14 13:37:49,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:37:49,414 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 185 flow [2024-06-14 13:37:49,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-06-14 13:37:49,415 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2024-06-14 13:37:49,415 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 185 flow [2024-06-14 13:37:49,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:49,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:49,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:49,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:37:49,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:37:49,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:49,417 INFO L85 PathProgramCache]: Analyzing trace with hash 269692658, now seen corresponding path program 1 times [2024-06-14 13:37:49,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:49,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604183664] [2024-06-14 13:37:49,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:49,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:52,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:52,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604183664] [2024-06-14 13:37:52,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604183664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:52,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:52,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 13:37:52,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821817925] [2024-06-14 13:37:52,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:52,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 13:37:52,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:52,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 13:37:52,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 13:37:52,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-14 13:37:52,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:52,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:52,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-14 13:37:52,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:53,990 INFO L124 PetriNetUnfolderBase]: 5573/7933 cut-off events. [2024-06-14 13:37:53,990 INFO L125 PetriNetUnfolderBase]: For 4121/4137 co-relation queries the response was YES. [2024-06-14 13:37:54,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20462 conditions, 7933 events. 5573/7933 cut-off events. For 4121/4137 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 42846 event pairs, 2919 based on Foata normal form. 16/7946 useless extension candidates. Maximal degree in co-relation 20445. Up to 7638 conditions per place. [2024-06-14 13:37:54,033 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 82 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-06-14 13:37:54,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 529 flow [2024-06-14 13:37:54,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:37:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:37:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-06-14 13:37:54,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5672727272727273 [2024-06-14 13:37:54,039 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 185 flow. Second operand 5 states and 156 transitions. [2024-06-14 13:37:54,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 529 flow [2024-06-14 13:37:54,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 104 transitions, 498 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-14 13:37:54,045 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 281 flow [2024-06-14 13:37:54,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-06-14 13:37:54,047 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2024-06-14 13:37:54,047 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 281 flow [2024-06-14 13:37:54,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:54,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:54,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:54,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:37:54,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:37:54,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:54,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1476667953, now seen corresponding path program 1 times [2024-06-14 13:37:54,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:54,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601308628] [2024-06-14 13:37:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:54,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:37:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:37:56,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:37:56,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601308628] [2024-06-14 13:37:56,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601308628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:37:56,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:37:56,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:37:56,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450017179] [2024-06-14 13:37:56,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:37:56,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:37:56,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:37:56,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:37:56,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:37:57,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-14 13:37:57,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:57,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:37:57,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-14 13:37:57,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:37:58,716 INFO L124 PetriNetUnfolderBase]: 5557/7913 cut-off events. [2024-06-14 13:37:58,716 INFO L125 PetriNetUnfolderBase]: For 7467/7507 co-relation queries the response was YES. [2024-06-14 13:37:58,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22654 conditions, 7913 events. 5557/7913 cut-off events. For 7467/7507 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 42737 event pairs, 2329 based on Foata normal form. 32/7942 useless extension candidates. Maximal degree in co-relation 22634. Up to 7560 conditions per place. [2024-06-14 13:37:58,759 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 91 selfloop transitions, 16 changer transitions 0/116 dead transitions. [2024-06-14 13:37:58,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 116 transitions, 627 flow [2024-06-14 13:37:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:37:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:37:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-14 13:37:58,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484848484848485 [2024-06-14 13:37:58,761 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 281 flow. Second operand 6 states and 181 transitions. [2024-06-14 13:37:58,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 116 transitions, 627 flow [2024-06-14 13:37:58,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 116 transitions, 619 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-14 13:37:58,765 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 333 flow [2024-06-14 13:37:58,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-06-14 13:37:58,766 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 12 predicate places. [2024-06-14 13:37:58,766 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 333 flow [2024-06-14 13:37:58,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:37:58,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:37:58,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:37:58,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:37:58,767 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:37:58,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:37:58,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1594940143, now seen corresponding path program 1 times [2024-06-14 13:37:58,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:37:58,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184743111] [2024-06-14 13:37:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:37:58,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:37:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:01,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:01,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184743111] [2024-06-14 13:38:01,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184743111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:01,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:01,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:38:01,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212620423] [2024-06-14 13:38:01,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:01,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:38:01,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:38:01,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:38:01,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:38:01,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:01,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:01,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:38:01,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:03,107 INFO L124 PetriNetUnfolderBase]: 6976/9834 cut-off events. [2024-06-14 13:38:03,107 INFO L125 PetriNetUnfolderBase]: For 14047/14073 co-relation queries the response was YES. [2024-06-14 13:38:03,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29912 conditions, 9834 events. 6976/9834 cut-off events. For 14047/14073 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 52899 event pairs, 3445 based on Foata normal form. 13/9843 useless extension candidates. Maximal degree in co-relation 29889. Up to 9532 conditions per place. [2024-06-14 13:38:03,229 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 80 selfloop transitions, 12 changer transitions 0/100 dead transitions. [2024-06-14 13:38:03,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 100 transitions, 637 flow [2024-06-14 13:38:03,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:38:03,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:38:03,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-14 13:38:03,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-06-14 13:38:03,238 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 333 flow. Second operand 5 states and 130 transitions. [2024-06-14 13:38:03,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 100 transitions, 637 flow [2024-06-14 13:38:03,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 100 transitions, 589 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-14 13:38:03,246 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 406 flow [2024-06-14 13:38:03,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2024-06-14 13:38:03,248 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-06-14 13:38:03,248 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 406 flow [2024-06-14 13:38:03,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:03,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:03,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:03,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:38:03,249 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:38:03,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:03,249 INFO L85 PathProgramCache]: Analyzing trace with hash 388404342, now seen corresponding path program 1 times [2024-06-14 13:38:03,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:03,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904853078] [2024-06-14 13:38:03,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:03,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:06,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:06,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904853078] [2024-06-14 13:38:06,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904853078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:06,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:06,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:38:06,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790113625] [2024-06-14 13:38:06,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:06,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:38:06,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:06,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:38:06,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:38:06,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-14 13:38:06,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 406 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:06,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:06,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-14 13:38:06,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:09,077 INFO L124 PetriNetUnfolderBase]: 6834/9677 cut-off events. [2024-06-14 13:38:09,078 INFO L125 PetriNetUnfolderBase]: For 21503/21653 co-relation queries the response was YES. [2024-06-14 13:38:09,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32972 conditions, 9677 events. 6834/9677 cut-off events. For 21503/21653 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 53183 event pairs, 3028 based on Foata normal form. 49/9698 useless extension candidates. Maximal degree in co-relation 32946. Up to 9201 conditions per place. [2024-06-14 13:38:09,131 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 92 selfloop transitions, 33 changer transitions 0/136 dead transitions. [2024-06-14 13:38:09,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 136 transitions, 874 flow [2024-06-14 13:38:09,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:38:09,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:38:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-06-14 13:38:09,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168831168831168 [2024-06-14 13:38:09,134 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 406 flow. Second operand 7 states and 199 transitions. [2024-06-14 13:38:09,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 136 transitions, 874 flow [2024-06-14 13:38:09,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 136 transitions, 862 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-14 13:38:09,142 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 543 flow [2024-06-14 13:38:09,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=543, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2024-06-14 13:38:09,143 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 20 predicate places. [2024-06-14 13:38:09,143 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 543 flow [2024-06-14 13:38:09,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:09,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:09,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:09,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 13:38:09,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:38:09,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash 388524498, now seen corresponding path program 1 times [2024-06-14 13:38:09,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:09,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059314260] [2024-06-14 13:38:09,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:09,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:12,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:12,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:12,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059314260] [2024-06-14 13:38:12,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059314260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:12,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:12,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:38:12,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483435360] [2024-06-14 13:38:12,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:12,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:38:12,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:12,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:38:12,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:38:12,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:38:12,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 543 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:12,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:12,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:38:12,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:14,739 INFO L124 PetriNetUnfolderBase]: 7076/9984 cut-off events. [2024-06-14 13:38:14,739 INFO L125 PetriNetUnfolderBase]: For 28213/28270 co-relation queries the response was YES. [2024-06-14 13:38:14,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35601 conditions, 9984 events. 7076/9984 cut-off events. For 28213/28270 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 53833 event pairs, 3210 based on Foata normal form. 27/10005 useless extension candidates. Maximal degree in co-relation 35572. Up to 9552 conditions per place. [2024-06-14 13:38:14,784 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 115 selfloop transitions, 28 changer transitions 0/151 dead transitions. [2024-06-14 13:38:14,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 151 transitions, 1108 flow [2024-06-14 13:38:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:38:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:38:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-14 13:38:14,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4935064935064935 [2024-06-14 13:38:14,787 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 543 flow. Second operand 7 states and 190 transitions. [2024-06-14 13:38:14,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 151 transitions, 1108 flow [2024-06-14 13:38:14,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 151 transitions, 1050 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-14 13:38:14,803 INFO L231 Difference]: Finished difference. Result has 84 places, 102 transitions, 708 flow [2024-06-14 13:38:14,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=708, PETRI_PLACES=84, PETRI_TRANSITIONS=102} [2024-06-14 13:38:14,804 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2024-06-14 13:38:14,804 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 102 transitions, 708 flow [2024-06-14 13:38:14,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:14,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:14,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:14,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 13:38:14,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:38:14,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:14,805 INFO L85 PathProgramCache]: Analyzing trace with hash 388524312, now seen corresponding path program 2 times [2024-06-14 13:38:14,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:14,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410816217] [2024-06-14 13:38:14,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:14,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:17,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:17,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410816217] [2024-06-14 13:38:17,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410816217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:17,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:17,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:38:17,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585919895] [2024-06-14 13:38:17,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:17,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:38:17,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:17,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:38:17,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:38:17,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-14 13:38:17,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 102 transitions, 708 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:17,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:17,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-14 13:38:17,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:20,203 INFO L124 PetriNetUnfolderBase]: 6838/9727 cut-off events. [2024-06-14 13:38:20,203 INFO L125 PetriNetUnfolderBase]: For 40666/41329 co-relation queries the response was YES. [2024-06-14 13:38:20,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38196 conditions, 9727 events. 6838/9727 cut-off events. For 40666/41329 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 54625 event pairs, 2900 based on Foata normal form. 81/9530 useless extension candidates. Maximal degree in co-relation 38163. Up to 9183 conditions per place. [2024-06-14 13:38:20,260 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 102 selfloop transitions, 38 changer transitions 0/154 dead transitions. [2024-06-14 13:38:20,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 154 transitions, 1168 flow [2024-06-14 13:38:20,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:38:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:38:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-14 13:38:20,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4961038961038961 [2024-06-14 13:38:20,263 INFO L175 Difference]: Start difference. First operand has 84 places, 102 transitions, 708 flow. Second operand 7 states and 191 transitions. [2024-06-14 13:38:20,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 154 transitions, 1168 flow [2024-06-14 13:38:20,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 154 transitions, 1118 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-14 13:38:20,289 INFO L231 Difference]: Finished difference. Result has 88 places, 110 transitions, 826 flow [2024-06-14 13:38:20,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=826, PETRI_PLACES=88, PETRI_TRANSITIONS=110} [2024-06-14 13:38:20,290 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 30 predicate places. [2024-06-14 13:38:20,290 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 110 transitions, 826 flow [2024-06-14 13:38:20,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:20,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:20,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:20,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 13:38:20,291 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:38:20,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:20,291 INFO L85 PathProgramCache]: Analyzing trace with hash 839742610, now seen corresponding path program 2 times [2024-06-14 13:38:20,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:20,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326056908] [2024-06-14 13:38:20,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:20,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:23,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:23,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326056908] [2024-06-14 13:38:23,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326056908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:23,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:23,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:38:23,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788500027] [2024-06-14 13:38:23,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:23,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:38:23,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:38:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:38:23,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:38:23,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 110 transitions, 826 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:23,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:23,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:38:23,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:25,434 INFO L124 PetriNetUnfolderBase]: 7168/10128 cut-off events. [2024-06-14 13:38:25,435 INFO L125 PetriNetUnfolderBase]: For 41547/41628 co-relation queries the response was YES. [2024-06-14 13:38:25,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39408 conditions, 10128 events. 7168/10128 cut-off events. For 41547/41628 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 54851 event pairs, 3210 based on Foata normal form. 39/10161 useless extension candidates. Maximal degree in co-relation 39374. Up to 9667 conditions per place. [2024-06-14 13:38:25,484 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 114 selfloop transitions, 32 changer transitions 0/154 dead transitions. [2024-06-14 13:38:25,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 154 transitions, 1308 flow [2024-06-14 13:38:25,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:38:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:38:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-14 13:38:25,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 13:38:25,486 INFO L175 Difference]: Start difference. First operand has 88 places, 110 transitions, 826 flow. Second operand 6 states and 165 transitions. [2024-06-14 13:38:25,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 154 transitions, 1308 flow [2024-06-14 13:38:25,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 154 transitions, 1206 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-14 13:38:25,518 INFO L231 Difference]: Finished difference. Result has 91 places, 115 transitions, 867 flow [2024-06-14 13:38:25,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=867, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2024-06-14 13:38:25,519 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 33 predicate places. [2024-06-14 13:38:25,519 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 115 transitions, 867 flow [2024-06-14 13:38:25,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:25,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:25,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:25,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 13:38:25,520 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:38:25,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash 810486670, now seen corresponding path program 3 times [2024-06-14 13:38:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:25,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966843237] [2024-06-14 13:38:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:25,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:28,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:28,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966843237] [2024-06-14 13:38:28,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966843237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:28,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:28,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:38:28,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414344760] [2024-06-14 13:38:28,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:28,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:38:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:28,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:38:28,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:38:28,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:38:28,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 115 transitions, 867 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:28,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:28,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:38:28,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:30,764 INFO L124 PetriNetUnfolderBase]: 7159/10127 cut-off events. [2024-06-14 13:38:30,764 INFO L125 PetriNetUnfolderBase]: For 47796/48108 co-relation queries the response was YES. [2024-06-14 13:38:30,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40141 conditions, 10127 events. 7159/10127 cut-off events. For 47796/48108 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 54954 event pairs, 3232 based on Foata normal form. 71/10185 useless extension candidates. Maximal degree in co-relation 40105. Up to 9658 conditions per place. [2024-06-14 13:38:30,817 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 108 selfloop transitions, 32 changer transitions 0/148 dead transitions. [2024-06-14 13:38:30,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 148 transitions, 1236 flow [2024-06-14 13:38:30,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:38:30,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:38:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-14 13:38:30,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47575757575757577 [2024-06-14 13:38:30,819 INFO L175 Difference]: Start difference. First operand has 91 places, 115 transitions, 867 flow. Second operand 6 states and 157 transitions. [2024-06-14 13:38:30,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 148 transitions, 1236 flow [2024-06-14 13:38:30,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 148 transitions, 1160 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-14 13:38:30,852 INFO L231 Difference]: Finished difference. Result has 93 places, 116 transitions, 874 flow [2024-06-14 13:38:30,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=874, PETRI_PLACES=93, PETRI_TRANSITIONS=116} [2024-06-14 13:38:30,853 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 35 predicate places. [2024-06-14 13:38:30,853 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 116 transitions, 874 flow [2024-06-14 13:38:30,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:30,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:30,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:30,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 13:38:30,854 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:38:30,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:30,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1459982220, now seen corresponding path program 3 times [2024-06-14 13:38:30,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:30,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043591488] [2024-06-14 13:38:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:30,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:33,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:33,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043591488] [2024-06-14 13:38:33,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043591488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:33,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:33,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:38:33,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891678085] [2024-06-14 13:38:33,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:33,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:38:33,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:33,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:38:33,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:38:33,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-14 13:38:33,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 116 transitions, 874 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:33,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:33,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-14 13:38:33,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:36,253 INFO L124 PetriNetUnfolderBase]: 6834/9727 cut-off events. [2024-06-14 13:38:36,253 INFO L125 PetriNetUnfolderBase]: For 51313/51868 co-relation queries the response was YES. [2024-06-14 13:38:36,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39669 conditions, 9727 events. 6834/9727 cut-off events. For 51313/51868 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 54509 event pairs, 2900 based on Foata normal form. 76/9534 useless extension candidates. Maximal degree in co-relation 39633. Up to 9113 conditions per place. [2024-06-14 13:38:36,318 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 94 selfloop transitions, 45 changer transitions 0/155 dead transitions. [2024-06-14 13:38:36,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 155 transitions, 1248 flow [2024-06-14 13:38:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:38:36,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:38:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-06-14 13:38:36,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-06-14 13:38:36,320 INFO L175 Difference]: Start difference. First operand has 93 places, 116 transitions, 874 flow. Second operand 6 states and 170 transitions. [2024-06-14 13:38:36,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 155 transitions, 1248 flow [2024-06-14 13:38:36,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 155 transitions, 1180 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-14 13:38:36,368 INFO L231 Difference]: Finished difference. Result has 96 places, 116 transitions, 920 flow [2024-06-14 13:38:36,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=920, PETRI_PLACES=96, PETRI_TRANSITIONS=116} [2024-06-14 13:38:36,369 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 38 predicate places. [2024-06-14 13:38:36,369 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 116 transitions, 920 flow [2024-06-14 13:38:36,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:36,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:36,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:36,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 13:38:36,370 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:38:36,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash 810495598, now seen corresponding path program 1 times [2024-06-14 13:38:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:36,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145623063] [2024-06-14 13:38:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:36,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:38,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:38,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145623063] [2024-06-14 13:38:38,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145623063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:38,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:38,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:38:38,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604829086] [2024-06-14 13:38:38,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:38,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:38:38,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:38,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:38:38,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:38:38,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:38:38,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 116 transitions, 920 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:38,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:38,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:38:38,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:41,143 INFO L124 PetriNetUnfolderBase]: 7128/10077 cut-off events. [2024-06-14 13:38:41,148 INFO L125 PetriNetUnfolderBase]: For 54494/54588 co-relation queries the response was YES. [2024-06-14 13:38:41,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40732 conditions, 10077 events. 7128/10077 cut-off events. For 54494/54588 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 54608 event pairs, 3074 based on Foata normal form. 35/10108 useless extension candidates. Maximal degree in co-relation 40694. Up to 9700 conditions per place. [2024-06-14 13:38:41,206 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 129 selfloop transitions, 15 changer transitions 0/152 dead transitions. [2024-06-14 13:38:41,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 152 transitions, 1317 flow [2024-06-14 13:38:41,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:38:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:38:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-14 13:38:41,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-14 13:38:41,208 INFO L175 Difference]: Start difference. First operand has 96 places, 116 transitions, 920 flow. Second operand 6 states and 155 transitions. [2024-06-14 13:38:41,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 152 transitions, 1317 flow [2024-06-14 13:38:41,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 152 transitions, 1221 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:38:41,271 INFO L231 Difference]: Finished difference. Result has 97 places, 119 transitions, 896 flow [2024-06-14 13:38:41,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=896, PETRI_PLACES=97, PETRI_TRANSITIONS=119} [2024-06-14 13:38:41,271 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 39 predicate places. [2024-06-14 13:38:41,271 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 119 transitions, 896 flow [2024-06-14 13:38:41,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:41,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:41,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:41,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 13:38:41,272 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:38:41,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:41,273 INFO L85 PathProgramCache]: Analyzing trace with hash -844365604, now seen corresponding path program 1 times [2024-06-14 13:38:41,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:41,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25742814] [2024-06-14 13:38:41,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:41,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:44,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:44,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25742814] [2024-06-14 13:38:44,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25742814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:44,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:44,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:38:44,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293270667] [2024-06-14 13:38:44,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:44,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:38:44,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:38:44,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:38:44,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:38:44,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 119 transitions, 896 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:44,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:44,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:38:44,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:47,596 INFO L124 PetriNetUnfolderBase]: 7155/10122 cut-off events. [2024-06-14 13:38:47,596 INFO L125 PetriNetUnfolderBase]: For 56034/56115 co-relation queries the response was YES. [2024-06-14 13:38:47,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41920 conditions, 10122 events. 7155/10122 cut-off events. For 56034/56115 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 54713 event pairs, 3023 based on Foata normal form. 41/10158 useless extension candidates. Maximal degree in co-relation 41881. Up to 9488 conditions per place. [2024-06-14 13:38:47,656 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 143 selfloop transitions, 50 changer transitions 0/201 dead transitions. [2024-06-14 13:38:47,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 201 transitions, 1659 flow [2024-06-14 13:38:47,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:38:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:38:47,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-14 13:38:47,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022727272727273 [2024-06-14 13:38:47,658 INFO L175 Difference]: Start difference. First operand has 97 places, 119 transitions, 896 flow. Second operand 8 states and 221 transitions. [2024-06-14 13:38:47,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 201 transitions, 1659 flow [2024-06-14 13:38:47,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 201 transitions, 1613 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 13:38:47,711 INFO L231 Difference]: Finished difference. Result has 103 places, 138 transitions, 1163 flow [2024-06-14 13:38:47,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1163, PETRI_PLACES=103, PETRI_TRANSITIONS=138} [2024-06-14 13:38:47,712 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2024-06-14 13:38:47,712 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 138 transitions, 1163 flow [2024-06-14 13:38:47,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:47,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:47,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:47,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 13:38:47,713 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:38:47,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1921299090, now seen corresponding path program 2 times [2024-06-14 13:38:47,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:47,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155538650] [2024-06-14 13:38:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:47,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:51,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:51,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155538650] [2024-06-14 13:38:51,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155538650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:51,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:51,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:38:51,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455401591] [2024-06-14 13:38:51,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:51,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:38:51,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:51,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:38:51,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:38:51,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:38:51,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 138 transitions, 1163 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:51,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:51,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:38:51,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:38:54,056 INFO L124 PetriNetUnfolderBase]: 7218/10228 cut-off events. [2024-06-14 13:38:54,057 INFO L125 PetriNetUnfolderBase]: For 69005/69081 co-relation queries the response was YES. [2024-06-14 13:38:54,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45237 conditions, 10228 events. 7218/10228 cut-off events. For 69005/69081 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 55434 event pairs, 3023 based on Foata normal form. 41/10264 useless extension candidates. Maximal degree in co-relation 45195. Up to 9679 conditions per place. [2024-06-14 13:38:54,130 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 170 selfloop transitions, 45 changer transitions 0/223 dead transitions. [2024-06-14 13:38:54,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 223 transitions, 1956 flow [2024-06-14 13:38:54,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:38:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:38:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-06-14 13:38:54,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-06-14 13:38:54,132 INFO L175 Difference]: Start difference. First operand has 103 places, 138 transitions, 1163 flow. Second operand 10 states and 265 transitions. [2024-06-14 13:38:54,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 223 transitions, 1956 flow [2024-06-14 13:38:54,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 223 transitions, 1869 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-14 13:38:54,200 INFO L231 Difference]: Finished difference. Result has 111 places, 148 transitions, 1304 flow [2024-06-14 13:38:54,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1304, PETRI_PLACES=111, PETRI_TRANSITIONS=148} [2024-06-14 13:38:54,201 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 53 predicate places. [2024-06-14 13:38:54,201 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 148 transitions, 1304 flow [2024-06-14 13:38:54,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:54,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:38:54,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:38:54,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 13:38:54,202 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:38:54,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:38:54,202 INFO L85 PathProgramCache]: Analyzing trace with hash -840646534, now seen corresponding path program 3 times [2024-06-14 13:38:54,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:38:54,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914046922] [2024-06-14 13:38:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:38:54,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:38:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:38:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:38:57,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:38:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914046922] [2024-06-14 13:38:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914046922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:38:57,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:38:57,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:38:57,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119351496] [2024-06-14 13:38:57,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:38:57,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:38:57,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:38:57,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:38:57,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:38:57,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:38:57,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 148 transitions, 1304 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:38:57,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:38:57,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:38:57,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:00,401 INFO L124 PetriNetUnfolderBase]: 7209/10216 cut-off events. [2024-06-14 13:39:00,401 INFO L125 PetriNetUnfolderBase]: For 76886/76962 co-relation queries the response was YES. [2024-06-14 13:39:00,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46097 conditions, 10216 events. 7209/10216 cut-off events. For 76886/76962 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 55464 event pairs, 3023 based on Foata normal form. 41/10252 useless extension candidates. Maximal degree in co-relation 46052. Up to 9670 conditions per place. [2024-06-14 13:39:00,460 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 150 selfloop transitions, 44 changer transitions 0/202 dead transitions. [2024-06-14 13:39:00,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 202 transitions, 1827 flow [2024-06-14 13:39:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:39:00,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:39:00,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-14 13:39:00,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-06-14 13:39:00,462 INFO L175 Difference]: Start difference. First operand has 111 places, 148 transitions, 1304 flow. Second operand 8 states and 214 transitions. [2024-06-14 13:39:00,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 202 transitions, 1827 flow [2024-06-14 13:39:00,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 202 transitions, 1742 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-14 13:39:00,530 INFO L231 Difference]: Finished difference. Result has 114 places, 148 transitions, 1318 flow [2024-06-14 13:39:00,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1318, PETRI_PLACES=114, PETRI_TRANSITIONS=148} [2024-06-14 13:39:00,531 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 56 predicate places. [2024-06-14 13:39:00,531 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 148 transitions, 1318 flow [2024-06-14 13:39:00,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:00,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:00,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:00,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 13:39:00,531 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:39:00,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:00,532 INFO L85 PathProgramCache]: Analyzing trace with hash -644715510, now seen corresponding path program 4 times [2024-06-14 13:39:00,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:00,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408694582] [2024-06-14 13:39:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:03,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:03,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408694582] [2024-06-14 13:39:03,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408694582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:03,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:03,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:39:03,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027351774] [2024-06-14 13:39:03,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:03,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:39:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:39:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:39:03,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:39:03,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 148 transitions, 1318 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:03,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:03,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:39:03,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:06,780 INFO L124 PetriNetUnfolderBase]: 7236/10275 cut-off events. [2024-06-14 13:39:06,781 INFO L125 PetriNetUnfolderBase]: For 87207/87718 co-relation queries the response was YES. [2024-06-14 13:39:06,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47228 conditions, 10275 events. 7236/10275 cut-off events. For 87207/87718 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 55975 event pairs, 3055 based on Foata normal form. 136/10398 useless extension candidates. Maximal degree in co-relation 47181. Up to 9610 conditions per place. [2024-06-14 13:39:06,847 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 153 selfloop transitions, 59 changer transitions 0/220 dead transitions. [2024-06-14 13:39:06,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 220 transitions, 2049 flow [2024-06-14 13:39:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:39:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:39:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-14 13:39:06,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-14 13:39:06,849 INFO L175 Difference]: Start difference. First operand has 114 places, 148 transitions, 1318 flow. Second operand 9 states and 240 transitions. [2024-06-14 13:39:06,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 220 transitions, 2049 flow [2024-06-14 13:39:06,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 220 transitions, 1961 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 13:39:06,917 INFO L231 Difference]: Finished difference. Result has 117 places, 154 transitions, 1441 flow [2024-06-14 13:39:06,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1441, PETRI_PLACES=117, PETRI_TRANSITIONS=154} [2024-06-14 13:39:06,918 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 59 predicate places. [2024-06-14 13:39:06,918 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 154 transitions, 1441 flow [2024-06-14 13:39:06,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:06,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:06,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:06,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 13:39:06,920 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:39:06,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:06,920 INFO L85 PathProgramCache]: Analyzing trace with hash -652072740, now seen corresponding path program 5 times [2024-06-14 13:39:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:06,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903086668] [2024-06-14 13:39:06,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:06,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:10,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:10,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903086668] [2024-06-14 13:39:10,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903086668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:10,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:10,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:39:10,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408339520] [2024-06-14 13:39:10,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:10,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:39:10,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:10,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:39:10,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:39:10,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:39:10,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 154 transitions, 1441 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:10,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:10,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:39:10,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:13,061 INFO L124 PetriNetUnfolderBase]: 7263/10310 cut-off events. [2024-06-14 13:39:13,061 INFO L125 PetriNetUnfolderBase]: For 95852/95928 co-relation queries the response was YES. [2024-06-14 13:39:13,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48434 conditions, 10310 events. 7263/10310 cut-off events. For 95852/95928 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 56029 event pairs, 3023 based on Foata normal form. 41/10346 useless extension candidates. Maximal degree in co-relation 48385. Up to 9638 conditions per place. [2024-06-14 13:39:13,140 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 140 selfloop transitions, 62 changer transitions 0/210 dead transitions. [2024-06-14 13:39:13,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 210 transitions, 2116 flow [2024-06-14 13:39:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:39:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:39:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-14 13:39:13,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-06-14 13:39:13,142 INFO L175 Difference]: Start difference. First operand has 117 places, 154 transitions, 1441 flow. Second operand 7 states and 196 transitions. [2024-06-14 13:39:13,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 210 transitions, 2116 flow [2024-06-14 13:39:13,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 210 transitions, 1954 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-14 13:39:13,242 INFO L231 Difference]: Finished difference. Result has 118 places, 158 transitions, 1477 flow [2024-06-14 13:39:13,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1477, PETRI_PLACES=118, PETRI_TRANSITIONS=158} [2024-06-14 13:39:13,242 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2024-06-14 13:39:13,242 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 158 transitions, 1477 flow [2024-06-14 13:39:13,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:13,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:13,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:13,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 13:39:13,243 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:39:13,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:13,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1985184174, now seen corresponding path program 6 times [2024-06-14 13:39:13,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:13,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474473004] [2024-06-14 13:39:13,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:13,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:16,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:16,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474473004] [2024-06-14 13:39:16,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474473004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:16,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:16,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:39:16,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084654130] [2024-06-14 13:39:16,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:16,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:39:16,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:16,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:39:16,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:39:16,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:39:16,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 158 transitions, 1477 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:16,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:16,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:39:16,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:20,212 INFO L124 PetriNetUnfolderBase]: 7254/10298 cut-off events. [2024-06-14 13:39:20,212 INFO L125 PetriNetUnfolderBase]: For 105331/105407 co-relation queries the response was YES. [2024-06-14 13:39:20,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48991 conditions, 10298 events. 7254/10298 cut-off events. For 105331/105407 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 56098 event pairs, 3023 based on Foata normal form. 41/10334 useless extension candidates. Maximal degree in co-relation 48941. Up to 9629 conditions per place. [2024-06-14 13:39:20,283 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 153 selfloop transitions, 64 changer transitions 0/225 dead transitions. [2024-06-14 13:39:20,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 225 transitions, 2078 flow [2024-06-14 13:39:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:39:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:39:20,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-14 13:39:20,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-06-14 13:39:20,285 INFO L175 Difference]: Start difference. First operand has 118 places, 158 transitions, 1477 flow. Second operand 9 states and 243 transitions. [2024-06-14 13:39:20,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 225 transitions, 2078 flow [2024-06-14 13:39:20,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 225 transitions, 1946 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-14 13:39:20,406 INFO L231 Difference]: Finished difference. Result has 122 places, 158 transitions, 1489 flow [2024-06-14 13:39:20,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1489, PETRI_PLACES=122, PETRI_TRANSITIONS=158} [2024-06-14 13:39:20,407 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 64 predicate places. [2024-06-14 13:39:20,407 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 158 transitions, 1489 flow [2024-06-14 13:39:20,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:20,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:20,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:20,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 13:39:20,408 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:39:20,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:20,408 INFO L85 PathProgramCache]: Analyzing trace with hash -408390155, now seen corresponding path program 1 times [2024-06-14 13:39:20,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:20,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347111345] [2024-06-14 13:39:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:20,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:23,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347111345] [2024-06-14 13:39:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347111345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:23,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:23,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:39:23,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211127995] [2024-06-14 13:39:23,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:23,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:39:23,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:23,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:39:23,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:39:23,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-14 13:39:23,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 158 transitions, 1489 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:23,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:23,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-14 13:39:23,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:26,503 INFO L124 PetriNetUnfolderBase]: 7091/10133 cut-off events. [2024-06-14 13:39:26,503 INFO L125 PetriNetUnfolderBase]: For 116965/117135 co-relation queries the response was YES. [2024-06-14 13:39:26,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49608 conditions, 10133 events. 7091/10133 cut-off events. For 116965/117135 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 56898 event pairs, 2165 based on Foata normal form. 51/9896 useless extension candidates. Maximal degree in co-relation 49558. Up to 9103 conditions per place. [2024-06-14 13:39:26,577 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 132 selfloop transitions, 68 changer transitions 0/226 dead transitions. [2024-06-14 13:39:26,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 226 transitions, 2209 flow [2024-06-14 13:39:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:39:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:39:26,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2024-06-14 13:39:26,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136363636363637 [2024-06-14 13:39:26,579 INFO L175 Difference]: Start difference. First operand has 122 places, 158 transitions, 1489 flow. Second operand 8 states and 226 transitions. [2024-06-14 13:39:26,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 226 transitions, 2209 flow [2024-06-14 13:39:26,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 226 transitions, 2025 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 13:39:26,728 INFO L231 Difference]: Finished difference. Result has 120 places, 164 transitions, 1543 flow [2024-06-14 13:39:26,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1543, PETRI_PLACES=120, PETRI_TRANSITIONS=164} [2024-06-14 13:39:26,728 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 62 predicate places. [2024-06-14 13:39:26,728 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 164 transitions, 1543 flow [2024-06-14 13:39:26,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:26,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:26,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:26,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 13:39:26,729 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:39:26,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash -684737751, now seen corresponding path program 2 times [2024-06-14 13:39:26,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:26,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113122993] [2024-06-14 13:39:26,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:26,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:30,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:30,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113122993] [2024-06-14 13:39:30,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113122993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:30,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:30,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:39:30,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874664801] [2024-06-14 13:39:30,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:30,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:39:30,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:30,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:39:30,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:39:30,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-14 13:39:30,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 164 transitions, 1543 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:30,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:30,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-14 13:39:30,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:33,293 INFO L124 PetriNetUnfolderBase]: 7137/10199 cut-off events. [2024-06-14 13:39:33,294 INFO L125 PetriNetUnfolderBase]: For 124616/124812 co-relation queries the response was YES. [2024-06-14 13:39:33,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51228 conditions, 10199 events. 7137/10199 cut-off events. For 124616/124812 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 57226 event pairs, 2606 based on Foata normal form. 45/9942 useless extension candidates. Maximal degree in co-relation 51178. Up to 9324 conditions per place. [2024-06-14 13:39:33,360 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 135 selfloop transitions, 64 changer transitions 0/225 dead transitions. [2024-06-14 13:39:33,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 225 transitions, 2129 flow [2024-06-14 13:39:33,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:39:33,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:39:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-14 13:39:33,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045454545454545 [2024-06-14 13:39:33,362 INFO L175 Difference]: Start difference. First operand has 120 places, 164 transitions, 1543 flow. Second operand 8 states and 222 transitions. [2024-06-14 13:39:33,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 225 transitions, 2129 flow [2024-06-14 13:39:33,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 225 transitions, 2019 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-14 13:39:33,474 INFO L231 Difference]: Finished difference. Result has 124 places, 167 transitions, 1624 flow [2024-06-14 13:39:33,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1624, PETRI_PLACES=124, PETRI_TRANSITIONS=167} [2024-06-14 13:39:33,474 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 66 predicate places. [2024-06-14 13:39:33,474 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 167 transitions, 1624 flow [2024-06-14 13:39:33,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:33,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:33,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:33,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 13:39:33,475 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:39:33,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:33,475 INFO L85 PathProgramCache]: Analyzing trace with hash -290242025, now seen corresponding path program 3 times [2024-06-14 13:39:33,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:33,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929786869] [2024-06-14 13:39:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:33,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:37,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:37,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929786869] [2024-06-14 13:39:37,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929786869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:37,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:37,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:39:37,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225723564] [2024-06-14 13:39:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:37,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:39:37,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:37,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:39:37,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:39:37,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-14 13:39:37,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 167 transitions, 1624 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:37,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:37,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-14 13:39:37,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:39,856 INFO L124 PetriNetUnfolderBase]: 7185/10273 cut-off events. [2024-06-14 13:39:39,857 INFO L125 PetriNetUnfolderBase]: For 137894/138087 co-relation queries the response was YES. [2024-06-14 13:39:39,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52551 conditions, 10273 events. 7185/10273 cut-off events. For 137894/138087 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 57731 event pairs, 2606 based on Foata normal form. 45/10008 useless extension candidates. Maximal degree in co-relation 52499. Up to 9475 conditions per place. [2024-06-14 13:39:39,941 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 153 selfloop transitions, 45 changer transitions 0/224 dead transitions. [2024-06-14 13:39:39,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 224 transitions, 2198 flow [2024-06-14 13:39:39,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:39:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:39:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-06-14 13:39:39,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49318181818181817 [2024-06-14 13:39:39,942 INFO L175 Difference]: Start difference. First operand has 124 places, 167 transitions, 1624 flow. Second operand 8 states and 217 transitions. [2024-06-14 13:39:39,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 224 transitions, 2198 flow [2024-06-14 13:39:40,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 224 transitions, 2053 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 13:39:40,094 INFO L231 Difference]: Finished difference. Result has 126 places, 170 transitions, 1632 flow [2024-06-14 13:39:40,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1632, PETRI_PLACES=126, PETRI_TRANSITIONS=170} [2024-06-14 13:39:40,095 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 68 predicate places. [2024-06-14 13:39:40,095 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 170 transitions, 1632 flow [2024-06-14 13:39:40,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:40,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:40,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:40,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 13:39:40,095 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:39:40,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash 546220655, now seen corresponding path program 1 times [2024-06-14 13:39:40,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:40,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522064563] [2024-06-14 13:39:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:40,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:43,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:43,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522064563] [2024-06-14 13:39:43,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522064563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:43,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:43,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:39:43,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029500465] [2024-06-14 13:39:43,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:43,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:39:43,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:39:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:39:43,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:39:43,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 170 transitions, 1632 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:43,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:43,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:39:43,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:46,491 INFO L124 PetriNetUnfolderBase]: 7526/10692 cut-off events. [2024-06-14 13:39:46,491 INFO L125 PetriNetUnfolderBase]: For 137269/137347 co-relation queries the response was YES. [2024-06-14 13:39:46,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53456 conditions, 10692 events. 7526/10692 cut-off events. For 137269/137347 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 58425 event pairs, 2799 based on Foata normal form. 44/10731 useless extension candidates. Maximal degree in co-relation 53403. Up to 10139 conditions per place. [2024-06-14 13:39:46,583 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 184 selfloop transitions, 36 changer transitions 0/228 dead transitions. [2024-06-14 13:39:46,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 228 transitions, 2245 flow [2024-06-14 13:39:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:39:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:39:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-14 13:39:46,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2024-06-14 13:39:46,584 INFO L175 Difference]: Start difference. First operand has 126 places, 170 transitions, 1632 flow. Second operand 8 states and 212 transitions. [2024-06-14 13:39:46,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 228 transitions, 2245 flow [2024-06-14 13:39:46,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 228 transitions, 2132 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-14 13:39:46,746 INFO L231 Difference]: Finished difference. Result has 128 places, 173 transitions, 1643 flow [2024-06-14 13:39:46,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1643, PETRI_PLACES=128, PETRI_TRANSITIONS=173} [2024-06-14 13:39:46,747 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 70 predicate places. [2024-06-14 13:39:46,747 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 173 transitions, 1643 flow [2024-06-14 13:39:46,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:46,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:46,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:46,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 13:39:46,748 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:39:46,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:46,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1260578293, now seen corresponding path program 4 times [2024-06-14 13:39:46,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:46,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656518002] [2024-06-14 13:39:46,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:46,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:50,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:50,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656518002] [2024-06-14 13:39:50,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656518002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:50,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:50,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:39:50,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099933938] [2024-06-14 13:39:50,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:50,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:39:50,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:50,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:39:50,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:39:50,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2024-06-14 13:39:50,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 173 transitions, 1643 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:50,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:50,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2024-06-14 13:39:50,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:53,200 INFO L124 PetriNetUnfolderBase]: 7211/10316 cut-off events. [2024-06-14 13:39:53,200 INFO L125 PetriNetUnfolderBase]: For 164871/165176 co-relation queries the response was YES. [2024-06-14 13:39:53,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54780 conditions, 10316 events. 7211/10316 cut-off events. For 164871/165176 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 58048 event pairs, 2120 based on Foata normal form. 69/10072 useless extension candidates. Maximal degree in co-relation 54726. Up to 9347 conditions per place. [2024-06-14 13:39:53,278 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 132 selfloop transitions, 63 changer transitions 0/222 dead transitions. [2024-06-14 13:39:53,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 222 transitions, 2153 flow [2024-06-14 13:39:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:39:53,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:39:53,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-14 13:39:53,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116883116883116 [2024-06-14 13:39:53,280 INFO L175 Difference]: Start difference. First operand has 128 places, 173 transitions, 1643 flow. Second operand 7 states and 197 transitions. [2024-06-14 13:39:53,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 222 transitions, 2153 flow [2024-06-14 13:39:53,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 222 transitions, 2037 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-14 13:39:53,432 INFO L231 Difference]: Finished difference. Result has 129 places, 173 transitions, 1674 flow [2024-06-14 13:39:53,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1674, PETRI_PLACES=129, PETRI_TRANSITIONS=173} [2024-06-14 13:39:53,433 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 71 predicate places. [2024-06-14 13:39:53,433 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 173 transitions, 1674 flow [2024-06-14 13:39:53,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:53,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:53,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:53,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 13:39:53,434 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:39:53,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1488664141, now seen corresponding path program 2 times [2024-06-14 13:39:53,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:53,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250480121] [2024-06-14 13:39:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:53,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:39:56,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:39:56,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:39:56,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250480121] [2024-06-14 13:39:56,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250480121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:39:56,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:39:56,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:39:56,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358522795] [2024-06-14 13:39:56,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:39:56,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:39:56,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:39:56,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:39:56,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:39:56,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:39:56,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 173 transitions, 1674 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:56,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:39:56,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:39:56,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:39:59,325 INFO L124 PetriNetUnfolderBase]: 7543/10731 cut-off events. [2024-06-14 13:39:59,325 INFO L125 PetriNetUnfolderBase]: For 165074/165558 co-relation queries the response was YES. [2024-06-14 13:39:59,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55952 conditions, 10731 events. 7543/10731 cut-off events. For 165074/165558 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 58974 event pairs, 2830 based on Foata normal form. 100/10818 useless extension candidates. Maximal degree in co-relation 55897. Up to 10166 conditions per place. [2024-06-14 13:39:59,407 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 175 selfloop transitions, 35 changer transitions 0/218 dead transitions. [2024-06-14 13:39:59,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 218 transitions, 2241 flow [2024-06-14 13:39:59,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:39:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:39:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-14 13:39:59,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-06-14 13:39:59,408 INFO L175 Difference]: Start difference. First operand has 129 places, 173 transitions, 1674 flow. Second operand 7 states and 182 transitions. [2024-06-14 13:39:59,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 218 transitions, 2241 flow [2024-06-14 13:39:59,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 218 transitions, 2098 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 13:39:59,580 INFO L231 Difference]: Finished difference. Result has 130 places, 176 transitions, 1659 flow [2024-06-14 13:39:59,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1659, PETRI_PLACES=130, PETRI_TRANSITIONS=176} [2024-06-14 13:39:59,580 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2024-06-14 13:39:59,580 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 176 transitions, 1659 flow [2024-06-14 13:39:59,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:39:59,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:39:59,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:39:59,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 13:39:59,581 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:39:59,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:39:59,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1260762991, now seen corresponding path program 3 times [2024-06-14 13:39:59,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:39:59,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997019334] [2024-06-14 13:39:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:39:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:39:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:02,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:02,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:02,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997019334] [2024-06-14 13:40:02,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997019334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:02,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:02,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:40:02,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138582303] [2024-06-14 13:40:02,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:02,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:40:02,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:02,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:40:02,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:40:03,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:40:03,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 176 transitions, 1659 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:03,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:03,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:40:03,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:05,619 INFO L124 PetriNetUnfolderBase]: 7587/10783 cut-off events. [2024-06-14 13:40:05,619 INFO L125 PetriNetUnfolderBase]: For 167265/167343 co-relation queries the response was YES. [2024-06-14 13:40:05,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57223 conditions, 10783 events. 7587/10783 cut-off events. For 167265/167343 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 59040 event pairs, 2800 based on Foata normal form. 44/10822 useless extension candidates. Maximal degree in co-relation 57167. Up to 10192 conditions per place. [2024-06-14 13:40:05,711 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 178 selfloop transitions, 39 changer transitions 0/225 dead transitions. [2024-06-14 13:40:05,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 225 transitions, 2256 flow [2024-06-14 13:40:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:40:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:40:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-14 13:40:05,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-14 13:40:05,713 INFO L175 Difference]: Start difference. First operand has 130 places, 176 transitions, 1659 flow. Second operand 7 states and 187 transitions. [2024-06-14 13:40:05,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 225 transitions, 2256 flow [2024-06-14 13:40:05,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 225 transitions, 2154 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-14 13:40:05,884 INFO L231 Difference]: Finished difference. Result has 132 places, 179 transitions, 1703 flow [2024-06-14 13:40:05,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1703, PETRI_PLACES=132, PETRI_TRANSITIONS=179} [2024-06-14 13:40:05,885 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 74 predicate places. [2024-06-14 13:40:05,885 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 179 transitions, 1703 flow [2024-06-14 13:40:05,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:05,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:05,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:05,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 13:40:05,886 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:40:05,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1488903151, now seen corresponding path program 4 times [2024-06-14 13:40:05,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:05,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493137727] [2024-06-14 13:40:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:05,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:09,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:09,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493137727] [2024-06-14 13:40:09,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493137727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:09,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:09,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:40:09,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960039328] [2024-06-14 13:40:09,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:09,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:40:09,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:09,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:40:09,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:40:09,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:40:09,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 179 transitions, 1703 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:09,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:09,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:40:09,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:11,711 INFO L124 PetriNetUnfolderBase]: 7572/10774 cut-off events. [2024-06-14 13:40:11,711 INFO L125 PetriNetUnfolderBase]: For 185072/185576 co-relation queries the response was YES. [2024-06-14 13:40:11,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58894 conditions, 10774 events. 7572/10774 cut-off events. For 185072/185576 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 58983 event pairs, 2643 based on Foata normal form. 100/10861 useless extension candidates. Maximal degree in co-relation 58837. Up to 10047 conditions per place. [2024-06-14 13:40:11,782 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 171 selfloop transitions, 46 changer transitions 0/225 dead transitions. [2024-06-14 13:40:11,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 225 transitions, 2298 flow [2024-06-14 13:40:11,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:40:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:40:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-14 13:40:11,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753246753246753 [2024-06-14 13:40:11,784 INFO L175 Difference]: Start difference. First operand has 132 places, 179 transitions, 1703 flow. Second operand 7 states and 183 transitions. [2024-06-14 13:40:11,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 225 transitions, 2298 flow [2024-06-14 13:40:11,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 225 transitions, 2174 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-14 13:40:11,909 INFO L231 Difference]: Finished difference. Result has 134 places, 182 transitions, 1741 flow [2024-06-14 13:40:11,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1741, PETRI_PLACES=134, PETRI_TRANSITIONS=182} [2024-06-14 13:40:11,909 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 76 predicate places. [2024-06-14 13:40:11,909 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 182 transitions, 1741 flow [2024-06-14 13:40:11,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:11,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:11,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:11,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 13:40:11,910 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:40:11,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash -441915831, now seen corresponding path program 1 times [2024-06-14 13:40:11,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:11,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741434919] [2024-06-14 13:40:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:11,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:14,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:14,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741434919] [2024-06-14 13:40:14,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741434919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:14,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:14,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:40:14,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599421250] [2024-06-14 13:40:14,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:14,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:40:14,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:14,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:40:14,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:40:14,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:40:14,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 182 transitions, 1741 flow. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:14,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:14,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:40:14,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:16,586 INFO L124 PetriNetUnfolderBase]: 8370/11901 cut-off events. [2024-06-14 13:40:16,586 INFO L125 PetriNetUnfolderBase]: For 208792/208879 co-relation queries the response was YES. [2024-06-14 13:40:16,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64596 conditions, 11901 events. 8370/11901 cut-off events. For 208792/208879 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 65792 event pairs, 3347 based on Foata normal form. 91/11966 useless extension candidates. Maximal degree in co-relation 64538. Up to 11322 conditions per place. [2024-06-14 13:40:16,680 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 185 selfloop transitions, 15 changer transitions 0/214 dead transitions. [2024-06-14 13:40:16,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 214 transitions, 2309 flow [2024-06-14 13:40:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:40:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:40:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-14 13:40:16,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-14 13:40:16,681 INFO L175 Difference]: Start difference. First operand has 134 places, 182 transitions, 1741 flow. Second operand 5 states and 125 transitions. [2024-06-14 13:40:16,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 214 transitions, 2309 flow [2024-06-14 13:40:16,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 214 transitions, 2175 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-14 13:40:16,854 INFO L231 Difference]: Finished difference. Result has 135 places, 195 transitions, 1797 flow [2024-06-14 13:40:16,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1797, PETRI_PLACES=135, PETRI_TRANSITIONS=195} [2024-06-14 13:40:16,854 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 77 predicate places. [2024-06-14 13:40:16,854 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 195 transitions, 1797 flow [2024-06-14 13:40:16,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:16,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:16,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:16,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 13:40:16,855 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:40:16,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:16,855 INFO L85 PathProgramCache]: Analyzing trace with hash 224808765, now seen corresponding path program 1 times [2024-06-14 13:40:16,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:16,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141974563] [2024-06-14 13:40:16,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:16,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:20,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:20,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141974563] [2024-06-14 13:40:20,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141974563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:20,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:20,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:40:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652178046] [2024-06-14 13:40:20,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:20,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:40:20,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:20,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:40:20,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:40:20,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:40:20,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 195 transitions, 1797 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:20,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:20,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:40:20,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:23,831 INFO L124 PetriNetUnfolderBase]: 8815/12564 cut-off events. [2024-06-14 13:40:23,831 INFO L125 PetriNetUnfolderBase]: For 245885/246258 co-relation queries the response was YES. [2024-06-14 13:40:23,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73430 conditions, 12564 events. 8815/12564 cut-off events. For 245885/246258 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 70429 event pairs, 2177 based on Foata normal form. 126/12676 useless extension candidates. Maximal degree in co-relation 73370. Up to 10951 conditions per place. [2024-06-14 13:40:23,944 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 198 selfloop transitions, 80 changer transitions 0/288 dead transitions. [2024-06-14 13:40:23,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 288 transitions, 2871 flow [2024-06-14 13:40:23,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:40:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:40:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 251 transitions. [2024-06-14 13:40:23,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070707070707071 [2024-06-14 13:40:23,946 INFO L175 Difference]: Start difference. First operand has 135 places, 195 transitions, 1797 flow. Second operand 9 states and 251 transitions. [2024-06-14 13:40:23,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 288 transitions, 2871 flow [2024-06-14 13:40:24,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 288 transitions, 2855 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-14 13:40:24,169 INFO L231 Difference]: Finished difference. Result has 145 places, 207 transitions, 2163 flow [2024-06-14 13:40:24,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2163, PETRI_PLACES=145, PETRI_TRANSITIONS=207} [2024-06-14 13:40:24,170 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 87 predicate places. [2024-06-14 13:40:24,170 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 207 transitions, 2163 flow [2024-06-14 13:40:24,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:24,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:24,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:24,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 13:40:24,170 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:40:24,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:24,171 INFO L85 PathProgramCache]: Analyzing trace with hash 226682715, now seen corresponding path program 2 times [2024-06-14 13:40:24,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:24,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536261168] [2024-06-14 13:40:24,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:24,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:28,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:28,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536261168] [2024-06-14 13:40:28,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536261168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:28,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:28,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:40:28,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873856614] [2024-06-14 13:40:28,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:28,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:40:28,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:28,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:40:28,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:40:28,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:40:28,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 207 transitions, 2163 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:28,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:28,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:40:28,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:31,613 INFO L124 PetriNetUnfolderBase]: 9137/13040 cut-off events. [2024-06-14 13:40:31,613 INFO L125 PetriNetUnfolderBase]: For 283561/283948 co-relation queries the response was YES. [2024-06-14 13:40:31,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79321 conditions, 13040 events. 9137/13040 cut-off events. For 283561/283948 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 73673 event pairs, 2960 based on Foata normal form. 126/13152 useless extension candidates. Maximal degree in co-relation 79256. Up to 11805 conditions per place. [2024-06-14 13:40:31,735 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 204 selfloop transitions, 75 changer transitions 0/289 dead transitions. [2024-06-14 13:40:31,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 289 transitions, 3157 flow [2024-06-14 13:40:31,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:40:31,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:40:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 251 transitions. [2024-06-14 13:40:31,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070707070707071 [2024-06-14 13:40:31,743 INFO L175 Difference]: Start difference. First operand has 145 places, 207 transitions, 2163 flow. Second operand 9 states and 251 transitions. [2024-06-14 13:40:31,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 289 transitions, 3157 flow [2024-06-14 13:40:32,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 289 transitions, 3031 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-14 13:40:32,083 INFO L231 Difference]: Finished difference. Result has 151 places, 212 transitions, 2310 flow [2024-06-14 13:40:32,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2037, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2310, PETRI_PLACES=151, PETRI_TRANSITIONS=212} [2024-06-14 13:40:32,084 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 93 predicate places. [2024-06-14 13:40:32,084 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 212 transitions, 2310 flow [2024-06-14 13:40:32,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:32,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:32,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:32,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 13:40:32,085 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:40:32,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash 248115751, now seen corresponding path program 3 times [2024-06-14 13:40:32,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:32,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079066844] [2024-06-14 13:40:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:32,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:35,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:35,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079066844] [2024-06-14 13:40:35,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079066844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:35,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:35,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:40:35,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18660908] [2024-06-14 13:40:35,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:35,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:40:35,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:35,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:40:35,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:40:36,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:40:36,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 212 transitions, 2310 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:36,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:36,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:40:36,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:39,714 INFO L124 PetriNetUnfolderBase]: 9083/12966 cut-off events. [2024-06-14 13:40:39,715 INFO L125 PetriNetUnfolderBase]: For 301186/301573 co-relation queries the response was YES. [2024-06-14 13:40:39,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79682 conditions, 12966 events. 9083/12966 cut-off events. For 301186/301573 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 73271 event pairs, 2972 based on Foata normal form. 132/13084 useless extension candidates. Maximal degree in co-relation 79614. Up to 11963 conditions per place. [2024-06-14 13:40:39,823 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 202 selfloop transitions, 72 changer transitions 0/284 dead transitions. [2024-06-14 13:40:39,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 284 transitions, 3065 flow [2024-06-14 13:40:39,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:40:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:40:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-14 13:40:39,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-06-14 13:40:39,825 INFO L175 Difference]: Start difference. First operand has 151 places, 212 transitions, 2310 flow. Second operand 9 states and 245 transitions. [2024-06-14 13:40:39,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 284 transitions, 3065 flow [2024-06-14 13:40:40,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 284 transitions, 2917 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-14 13:40:40,162 INFO L231 Difference]: Finished difference. Result has 155 places, 213 transitions, 2338 flow [2024-06-14 13:40:40,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2338, PETRI_PLACES=155, PETRI_TRANSITIONS=213} [2024-06-14 13:40:40,162 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 97 predicate places. [2024-06-14 13:40:40,162 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 213 transitions, 2338 flow [2024-06-14 13:40:40,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:40,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:40,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:40,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 13:40:40,163 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:40:40,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash -472969425, now seen corresponding path program 4 times [2024-06-14 13:40:40,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:40,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511552497] [2024-06-14 13:40:40,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:40,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:44,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511552497] [2024-06-14 13:40:44,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511552497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:44,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:44,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:40:44,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260000113] [2024-06-14 13:40:44,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:44,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:40:44,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:44,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:40:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:40:44,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:40:44,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 213 transitions, 2338 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:44,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:44,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:40:44,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:47,587 INFO L124 PetriNetUnfolderBase]: 9239/13222 cut-off events. [2024-06-14 13:40:47,587 INFO L125 PetriNetUnfolderBase]: For 319706/320093 co-relation queries the response was YES. [2024-06-14 13:40:47,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81706 conditions, 13222 events. 9239/13222 cut-off events. For 319706/320093 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 75289 event pairs, 3010 based on Foata normal form. 116/13324 useless extension candidates. Maximal degree in co-relation 81636. Up to 12341 conditions per place. [2024-06-14 13:40:47,720 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 224 selfloop transitions, 48 changer transitions 0/282 dead transitions. [2024-06-14 13:40:47,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 282 transitions, 3111 flow [2024-06-14 13:40:47,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:40:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:40:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-14 13:40:47,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868686868686869 [2024-06-14 13:40:47,721 INFO L175 Difference]: Start difference. First operand has 155 places, 213 transitions, 2338 flow. Second operand 9 states and 241 transitions. [2024-06-14 13:40:47,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 282 transitions, 3111 flow [2024-06-14 13:40:48,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 282 transitions, 2967 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 13:40:48,066 INFO L231 Difference]: Finished difference. Result has 157 places, 215 transitions, 2356 flow [2024-06-14 13:40:48,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2356, PETRI_PLACES=157, PETRI_TRANSITIONS=215} [2024-06-14 13:40:48,067 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 99 predicate places. [2024-06-14 13:40:48,067 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 215 transitions, 2356 flow [2024-06-14 13:40:48,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:48,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:48,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:48,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 13:40:48,068 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:40:48,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:48,068 INFO L85 PathProgramCache]: Analyzing trace with hash -407566501, now seen corresponding path program 5 times [2024-06-14 13:40:48,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:48,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230051633] [2024-06-14 13:40:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:48,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:40:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:40:52,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:40:52,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230051633] [2024-06-14 13:40:52,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230051633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:40:52,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:40:52,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:40:52,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795757676] [2024-06-14 13:40:52,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:40:52,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:40:52,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:40:52,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:40:52,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:40:52,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:40:52,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 215 transitions, 2356 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:52,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:40:52,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:40:52,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:40:55,862 INFO L124 PetriNetUnfolderBase]: 9561/13708 cut-off events. [2024-06-14 13:40:55,862 INFO L125 PetriNetUnfolderBase]: For 353180/353555 co-relation queries the response was YES. [2024-06-14 13:40:55,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86015 conditions, 13708 events. 9561/13708 cut-off events. For 353180/353555 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 78691 event pairs, 3038 based on Foata normal form. 110/13804 useless extension candidates. Maximal degree in co-relation 85944. Up to 12399 conditions per place. [2024-06-14 13:40:55,994 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 230 selfloop transitions, 53 changer transitions 0/293 dead transitions. [2024-06-14 13:40:55,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 293 transitions, 3384 flow [2024-06-14 13:40:55,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:40:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:40:55,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-14 13:40:55,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695 [2024-06-14 13:40:55,996 INFO L175 Difference]: Start difference. First operand has 157 places, 215 transitions, 2356 flow. Second operand 9 states and 246 transitions. [2024-06-14 13:40:55,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 293 transitions, 3384 flow [2024-06-14 13:40:56,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 293 transitions, 3264 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 13:40:56,331 INFO L231 Difference]: Finished difference. Result has 160 places, 220 transitions, 2487 flow [2024-06-14 13:40:56,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2236, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2487, PETRI_PLACES=160, PETRI_TRANSITIONS=220} [2024-06-14 13:40:56,332 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 102 predicate places. [2024-06-14 13:40:56,332 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 220 transitions, 2487 flow [2024-06-14 13:40:56,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:40:56,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:40:56,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:40:56,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 13:40:56,333 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:40:56,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:40:56,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1845054663, now seen corresponding path program 6 times [2024-06-14 13:40:56,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:40:56,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297468767] [2024-06-14 13:40:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:40:56,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:40:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:41:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:41:00,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:41:00,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297468767] [2024-06-14 13:41:00,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297468767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:41:00,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:41:00,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:41:00,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644061539] [2024-06-14 13:41:00,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:41:00,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:41:00,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:41:00,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:41:00,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:41:00,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:41:00,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 220 transitions, 2487 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:00,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:41:00,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:41:00,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:41:04,084 INFO L124 PetriNetUnfolderBase]: 9507/13630 cut-off events. [2024-06-14 13:41:04,085 INFO L125 PetriNetUnfolderBase]: For 368349/368724 co-relation queries the response was YES. [2024-06-14 13:41:04,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85901 conditions, 13630 events. 9507/13630 cut-off events. For 368349/368724 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 78101 event pairs, 3050 based on Foata normal form. 116/13732 useless extension candidates. Maximal degree in co-relation 85828. Up to 12749 conditions per place. [2024-06-14 13:41:04,222 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 247 selfloop transitions, 49 changer transitions 0/306 dead transitions. [2024-06-14 13:41:04,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 306 transitions, 3324 flow [2024-06-14 13:41:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:41:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:41:04,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 289 transitions. [2024-06-14 13:41:04,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47768595041322315 [2024-06-14 13:41:04,224 INFO L175 Difference]: Start difference. First operand has 160 places, 220 transitions, 2487 flow. Second operand 11 states and 289 transitions. [2024-06-14 13:41:04,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 306 transitions, 3324 flow [2024-06-14 13:41:04,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 306 transitions, 3196 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-14 13:41:04,676 INFO L231 Difference]: Finished difference. Result has 166 places, 221 transitions, 2493 flow [2024-06-14 13:41:04,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2493, PETRI_PLACES=166, PETRI_TRANSITIONS=221} [2024-06-14 13:41:04,677 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 108 predicate places. [2024-06-14 13:41:04,677 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 221 transitions, 2493 flow [2024-06-14 13:41:04,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:04,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:41:04,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:41:04,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 13:41:04,677 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:41:04,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:41:04,678 INFO L85 PathProgramCache]: Analyzing trace with hash -401841049, now seen corresponding path program 1 times [2024-06-14 13:41:04,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:41:04,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114602715] [2024-06-14 13:41:04,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:41:04,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:41:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:41:08,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:41:08,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:41:08,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114602715] [2024-06-14 13:41:08,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114602715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:41:08,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:41:08,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:41:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987913308] [2024-06-14 13:41:08,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:41:08,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:41:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:41:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:41:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:41:08,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:41:08,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 221 transitions, 2493 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:08,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:41:08,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:41:08,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:41:12,634 INFO L124 PetriNetUnfolderBase]: 9619/13822 cut-off events. [2024-06-14 13:41:12,635 INFO L125 PetriNetUnfolderBase]: For 384142/384517 co-relation queries the response was YES. [2024-06-14 13:41:12,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87194 conditions, 13822 events. 9619/13822 cut-off events. For 384142/384517 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 79700 event pairs, 3042 based on Foata normal form. 110/13918 useless extension candidates. Maximal degree in co-relation 87119. Up to 12547 conditions per place. [2024-06-14 13:41:12,754 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 245 selfloop transitions, 56 changer transitions 0/311 dead transitions. [2024-06-14 13:41:12,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 311 transitions, 3374 flow [2024-06-14 13:41:12,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:41:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:41:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 291 transitions. [2024-06-14 13:41:12,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809917355371901 [2024-06-14 13:41:12,755 INFO L175 Difference]: Start difference. First operand has 166 places, 221 transitions, 2493 flow. Second operand 11 states and 291 transitions. [2024-06-14 13:41:12,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 311 transitions, 3374 flow [2024-06-14 13:41:13,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 311 transitions, 3272 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 13:41:13,120 INFO L231 Difference]: Finished difference. Result has 168 places, 223 transitions, 2562 flow [2024-06-14 13:41:13,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2562, PETRI_PLACES=168, PETRI_TRANSITIONS=223} [2024-06-14 13:41:13,121 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 110 predicate places. [2024-06-14 13:41:13,121 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 223 transitions, 2562 flow [2024-06-14 13:41:13,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:13,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:41:13,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:41:13,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 13:41:13,121 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:41:13,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:41:13,121 INFO L85 PathProgramCache]: Analyzing trace with hash 428733351, now seen corresponding path program 7 times [2024-06-14 13:41:13,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:41:13,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085735056] [2024-06-14 13:41:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:41:13,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:41:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:41:17,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:41:17,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:41:17,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085735056] [2024-06-14 13:41:17,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085735056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:41:17,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:41:17,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:41:17,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006003124] [2024-06-14 13:41:17,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:41:17,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:41:17,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:41:17,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:41:17,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:41:17,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:41:17,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 223 transitions, 2562 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:17,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:41:17,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:41:17,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:41:21,457 INFO L124 PetriNetUnfolderBase]: 9775/14074 cut-off events. [2024-06-14 13:41:21,457 INFO L125 PetriNetUnfolderBase]: For 417933/418314 co-relation queries the response was YES. [2024-06-14 13:41:21,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90513 conditions, 14074 events. 9775/14074 cut-off events. For 417933/418314 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 81662 event pairs, 3100 based on Foata normal form. 180/14240 useless extension candidates. Maximal degree in co-relation 90437. Up to 12861 conditions per place. [2024-06-14 13:41:21,611 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 225 selfloop transitions, 70 changer transitions 0/305 dead transitions. [2024-06-14 13:41:21,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 305 transitions, 3421 flow [2024-06-14 13:41:21,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:41:21,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:41:21,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-06-14 13:41:21,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-06-14 13:41:21,613 INFO L175 Difference]: Start difference. First operand has 168 places, 223 transitions, 2562 flow. Second operand 10 states and 270 transitions. [2024-06-14 13:41:21,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 305 transitions, 3421 flow [2024-06-14 13:41:22,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 305 transitions, 3278 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-14 13:41:22,118 INFO L231 Difference]: Finished difference. Result has 169 places, 225 transitions, 2637 flow [2024-06-14 13:41:22,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2419, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2637, PETRI_PLACES=169, PETRI_TRANSITIONS=225} [2024-06-14 13:41:22,119 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 111 predicate places. [2024-06-14 13:41:22,119 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 225 transitions, 2637 flow [2024-06-14 13:41:22,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:22,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:41:22,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:41:22,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 13:41:22,119 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:41:22,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:41:22,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1096265591, now seen corresponding path program 8 times [2024-06-14 13:41:22,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:41:22,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459451190] [2024-06-14 13:41:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:41:22,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:41:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:41:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:41:25,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:41:25,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459451190] [2024-06-14 13:41:25,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459451190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:41:25,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:41:25,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:41:25,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933809587] [2024-06-14 13:41:25,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:41:25,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:41:25,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:41:25,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:41:25,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:41:26,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:41:26,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 225 transitions, 2637 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:26,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:41:26,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:41:26,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:41:30,103 INFO L124 PetriNetUnfolderBase]: 10108/14587 cut-off events. [2024-06-14 13:41:30,104 INFO L125 PetriNetUnfolderBase]: For 452846/453453 co-relation queries the response was YES. [2024-06-14 13:41:30,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94967 conditions, 14587 events. 10108/14587 cut-off events. For 452846/453453 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 85309 event pairs, 3142 based on Foata normal form. 183/14749 useless extension candidates. Maximal degree in co-relation 94890. Up to 13533 conditions per place. [2024-06-14 13:41:30,238 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 227 selfloop transitions, 66 changer transitions 0/303 dead transitions. [2024-06-14 13:41:30,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 303 transitions, 3486 flow [2024-06-14 13:41:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:41:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:41:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-14 13:41:30,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-06-14 13:41:30,240 INFO L175 Difference]: Start difference. First operand has 169 places, 225 transitions, 2637 flow. Second operand 10 states and 264 transitions. [2024-06-14 13:41:30,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 303 transitions, 3486 flow [2024-06-14 13:41:30,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 303 transitions, 3322 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 13:41:30,646 INFO L231 Difference]: Finished difference. Result has 171 places, 227 transitions, 2683 flow [2024-06-14 13:41:30,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2683, PETRI_PLACES=171, PETRI_TRANSITIONS=227} [2024-06-14 13:41:30,647 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 113 predicate places. [2024-06-14 13:41:30,647 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 227 transitions, 2683 flow [2024-06-14 13:41:30,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:30,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:41:30,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:41:30,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 13:41:30,647 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:41:30,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:41:30,648 INFO L85 PathProgramCache]: Analyzing trace with hash 423226821, now seen corresponding path program 9 times [2024-06-14 13:41:30,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:41:30,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409389795] [2024-06-14 13:41:30,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:41:30,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:41:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:41:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:41:34,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:41:34,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409389795] [2024-06-14 13:41:34,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409389795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:41:34,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:41:34,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:41:34,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103710371] [2024-06-14 13:41:34,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:41:34,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:41:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:41:34,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:41:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:41:34,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:41:34,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 227 transitions, 2683 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:34,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:41:34,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:41:34,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:41:38,605 INFO L124 PetriNetUnfolderBase]: 10002/14447 cut-off events. [2024-06-14 13:41:38,605 INFO L125 PetriNetUnfolderBase]: For 466272/466645 co-relation queries the response was YES. [2024-06-14 13:41:38,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93641 conditions, 14447 events. 10002/14447 cut-off events. For 466272/466645 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 84562 event pairs, 3137 based on Foata normal form. 148/14581 useless extension candidates. Maximal degree in co-relation 93563. Up to 13214 conditions per place. [2024-06-14 13:41:38,744 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 213 selfloop transitions, 68 changer transitions 0/291 dead transitions. [2024-06-14 13:41:38,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 291 transitions, 3478 flow [2024-06-14 13:41:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:41:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:41:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-06-14 13:41:38,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-14 13:41:38,746 INFO L175 Difference]: Start difference. First operand has 171 places, 227 transitions, 2683 flow. Second operand 8 states and 220 transitions. [2024-06-14 13:41:38,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 291 transitions, 3478 flow [2024-06-14 13:41:39,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 291 transitions, 3310 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 13:41:39,233 INFO L231 Difference]: Finished difference. Result has 171 places, 229 transitions, 2737 flow [2024-06-14 13:41:39,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2737, PETRI_PLACES=171, PETRI_TRANSITIONS=229} [2024-06-14 13:41:39,234 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 113 predicate places. [2024-06-14 13:41:39,234 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 229 transitions, 2737 flow [2024-06-14 13:41:39,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:39,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:41:39,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:41:39,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 13:41:39,234 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:41:39,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:41:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash 423223101, now seen corresponding path program 10 times [2024-06-14 13:41:39,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:41:39,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112219294] [2024-06-14 13:41:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:41:39,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:41:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:41:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:41:43,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:41:43,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112219294] [2024-06-14 13:41:43,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112219294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:41:43,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:41:43,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:41:43,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622948400] [2024-06-14 13:41:43,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:41:43,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:41:43,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:41:43,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:41:43,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:41:43,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:41:43,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 229 transitions, 2737 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:43,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:41:43,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:41:43,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:41:46,902 INFO L124 PetriNetUnfolderBase]: 9963/14388 cut-off events. [2024-06-14 13:41:46,902 INFO L125 PetriNetUnfolderBase]: For 475272/475657 co-relation queries the response was YES. [2024-06-14 13:41:46,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93014 conditions, 14388 events. 9963/14388 cut-off events. For 475272/475657 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 83909 event pairs, 2531 based on Foata normal form. 126/14500 useless extension candidates. Maximal degree in co-relation 92935. Up to 12151 conditions per place. [2024-06-14 13:41:47,036 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 202 selfloop transitions, 84 changer transitions 0/296 dead transitions. [2024-06-14 13:41:47,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 296 transitions, 3522 flow [2024-06-14 13:41:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:41:47,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:41:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-14 13:41:47,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068181818181818 [2024-06-14 13:41:47,037 INFO L175 Difference]: Start difference. First operand has 171 places, 229 transitions, 2737 flow. Second operand 8 states and 223 transitions. [2024-06-14 13:41:47,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 296 transitions, 3522 flow [2024-06-14 13:41:47,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 296 transitions, 3328 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-14 13:41:47,670 INFO L231 Difference]: Finished difference. Result has 174 places, 231 transitions, 2792 flow [2024-06-14 13:41:47,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2551, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2792, PETRI_PLACES=174, PETRI_TRANSITIONS=231} [2024-06-14 13:41:47,670 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 116 predicate places. [2024-06-14 13:41:47,670 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 231 transitions, 2792 flow [2024-06-14 13:41:47,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:47,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:41:47,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:41:47,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 13:41:47,671 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:41:47,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:41:47,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1096050389, now seen corresponding path program 2 times [2024-06-14 13:41:47,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:41:47,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064843900] [2024-06-14 13:41:47,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:41:47,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:41:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:41:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:41:51,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:41:51,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064843900] [2024-06-14 13:41:51,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064843900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:41:51,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:41:51,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:41:51,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816511213] [2024-06-14 13:41:51,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:41:51,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:41:51,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:41:51,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:41:51,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:41:51,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:41:51,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 231 transitions, 2792 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:51,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:41:51,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:41:51,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:41:55,500 INFO L124 PetriNetUnfolderBase]: 10265/14878 cut-off events. [2024-06-14 13:41:55,500 INFO L125 PetriNetUnfolderBase]: For 503201/503846 co-relation queries the response was YES. [2024-06-14 13:41:55,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97257 conditions, 14878 events. 10265/14878 cut-off events. For 503201/503846 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 87775 event pairs, 3153 based on Foata normal form. 177/15034 useless extension candidates. Maximal degree in co-relation 97176. Up to 13602 conditions per place. [2024-06-14 13:41:55,666 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 240 selfloop transitions, 71 changer transitions 0/321 dead transitions. [2024-06-14 13:41:55,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 321 transitions, 3697 flow [2024-06-14 13:41:55,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 13:41:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 13:41:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 291 transitions. [2024-06-14 13:41:55,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809917355371901 [2024-06-14 13:41:55,668 INFO L175 Difference]: Start difference. First operand has 174 places, 231 transitions, 2792 flow. Second operand 11 states and 291 transitions. [2024-06-14 13:41:55,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 321 transitions, 3697 flow [2024-06-14 13:41:56,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 321 transitions, 3424 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 13:41:56,333 INFO L231 Difference]: Finished difference. Result has 177 places, 233 transitions, 2724 flow [2024-06-14 13:41:56,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2724, PETRI_PLACES=177, PETRI_TRANSITIONS=233} [2024-06-14 13:41:56,334 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 119 predicate places. [2024-06-14 13:41:56,334 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 233 transitions, 2724 flow [2024-06-14 13:41:56,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:56,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:41:56,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:41:56,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 13:41:56,334 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:41:56,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:41:56,335 INFO L85 PathProgramCache]: Analyzing trace with hash -830353109, now seen corresponding path program 3 times [2024-06-14 13:41:56,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:41:56,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838820451] [2024-06-14 13:41:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:41:56,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:41:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:41:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:41:59,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:41:59,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838820451] [2024-06-14 13:41:59,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838820451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:41:59,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:41:59,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:41:59,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375717647] [2024-06-14 13:41:59,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:41:59,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:41:59,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:41:59,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:41:59,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:41:59,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:41:59,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 233 transitions, 2724 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:41:59,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:41:59,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:41:59,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:42:04,129 INFO L124 PetriNetUnfolderBase]: 10377/15070 cut-off events. [2024-06-14 13:42:04,129 INFO L125 PetriNetUnfolderBase]: For 506833/507462 co-relation queries the response was YES. [2024-06-14 13:42:04,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97746 conditions, 15070 events. 10377/15070 cut-off events. For 506833/507462 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 89155 event pairs, 2981 based on Foata normal form. 177/15226 useless extension candidates. Maximal degree in co-relation 97666. Up to 12290 conditions per place. [2024-06-14 13:42:04,267 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 216 selfloop transitions, 93 changer transitions 0/319 dead transitions. [2024-06-14 13:42:04,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 319 transitions, 3795 flow [2024-06-14 13:42:04,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:42:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:42:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 269 transitions. [2024-06-14 13:42:04,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4890909090909091 [2024-06-14 13:42:04,268 INFO L175 Difference]: Start difference. First operand has 177 places, 233 transitions, 2724 flow. Second operand 10 states and 269 transitions. [2024-06-14 13:42:04,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 319 transitions, 3795 flow [2024-06-14 13:42:04,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 319 transitions, 3618 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 13:42:04,760 INFO L231 Difference]: Finished difference. Result has 178 places, 237 transitions, 2854 flow [2024-06-14 13:42:04,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2547, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2854, PETRI_PLACES=178, PETRI_TRANSITIONS=237} [2024-06-14 13:42:04,761 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 120 predicate places. [2024-06-14 13:42:04,761 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 237 transitions, 2854 flow [2024-06-14 13:42:04,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:04,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:42:04,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:42:04,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 13:42:04,762 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:42:04,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:42:04,762 INFO L85 PathProgramCache]: Analyzing trace with hash -796247693, now seen corresponding path program 4 times [2024-06-14 13:42:04,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:42:04,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183965128] [2024-06-14 13:42:04,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:42:04,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:42:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:42:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:42:08,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:42:08,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183965128] [2024-06-14 13:42:08,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183965128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:42:08,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:42:08,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:42:08,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401301912] [2024-06-14 13:42:08,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:42:08,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:42:08,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:42:08,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:42:08,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:42:08,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:42:08,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 237 transitions, 2854 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:08,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:42:08,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:42:08,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:42:13,016 INFO L124 PetriNetUnfolderBase]: 10142/14695 cut-off events. [2024-06-14 13:42:13,016 INFO L125 PetriNetUnfolderBase]: For 527038/527453 co-relation queries the response was YES. [2024-06-14 13:42:13,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96181 conditions, 14695 events. 10142/14695 cut-off events. For 527038/527453 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 86410 event pairs, 3087 based on Foata normal form. 161/14842 useless extension candidates. Maximal degree in co-relation 96100. Up to 12690 conditions per place. [2024-06-14 13:42:13,176 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 225 selfloop transitions, 84 changer transitions 0/319 dead transitions. [2024-06-14 13:42:13,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 319 transitions, 3627 flow [2024-06-14 13:42:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 13:42:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 13:42:13,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-14 13:42:13,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49272727272727274 [2024-06-14 13:42:13,178 INFO L175 Difference]: Start difference. First operand has 178 places, 237 transitions, 2854 flow. Second operand 10 states and 271 transitions. [2024-06-14 13:42:13,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 319 transitions, 3627 flow [2024-06-14 13:42:13,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 319 transitions, 3493 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-14 13:42:13,856 INFO L231 Difference]: Finished difference. Result has 181 places, 236 transitions, 2832 flow [2024-06-14 13:42:13,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2654, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2832, PETRI_PLACES=181, PETRI_TRANSITIONS=236} [2024-06-14 13:42:13,857 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 123 predicate places. [2024-06-14 13:42:13,857 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 236 transitions, 2832 flow [2024-06-14 13:42:13,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:13,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:42:13,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:42:13,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 13:42:13,858 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:42:13,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:42:13,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1256351854, now seen corresponding path program 1 times [2024-06-14 13:42:13,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:42:13,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220733091] [2024-06-14 13:42:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:42:13,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:42:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:42:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:42:17,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:42:17,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220733091] [2024-06-14 13:42:17,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220733091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:42:17,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:42:17,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:42:17,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886840159] [2024-06-14 13:42:17,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:42:17,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:42:17,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:42:17,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:42:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:42:17,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:42:17,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 236 transitions, 2832 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:17,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:42:17,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:42:17,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:42:20,832 INFO L124 PetriNetUnfolderBase]: 10559/15316 cut-off events. [2024-06-14 13:42:20,832 INFO L125 PetriNetUnfolderBase]: For 529116/529181 co-relation queries the response was YES. [2024-06-14 13:42:20,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96340 conditions, 15316 events. 10559/15316 cut-off events. For 529116/529181 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 90928 event pairs, 3655 based on Foata normal form. 69/15349 useless extension candidates. Maximal degree in co-relation 96257. Up to 14391 conditions per place. [2024-06-14 13:42:20,975 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 250 selfloop transitions, 42 changer transitions 0/307 dead transitions. [2024-06-14 13:42:20,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 307 transitions, 3991 flow [2024-06-14 13:42:20,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:42:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:42:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-14 13:42:20,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649350649350649 [2024-06-14 13:42:20,977 INFO L175 Difference]: Start difference. First operand has 181 places, 236 transitions, 2832 flow. Second operand 7 states and 179 transitions. [2024-06-14 13:42:20,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 307 transitions, 3991 flow [2024-06-14 13:42:21,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 307 transitions, 3748 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 13:42:21,484 INFO L231 Difference]: Finished difference. Result has 181 places, 265 transitions, 3067 flow [2024-06-14 13:42:21,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2605, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3067, PETRI_PLACES=181, PETRI_TRANSITIONS=265} [2024-06-14 13:42:21,485 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 123 predicate places. [2024-06-14 13:42:21,485 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 265 transitions, 3067 flow [2024-06-14 13:42:21,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:21,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:42:21,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:42:21,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 13:42:21,486 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:42:21,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:42:21,486 INFO L85 PathProgramCache]: Analyzing trace with hash 13090706, now seen corresponding path program 2 times [2024-06-14 13:42:21,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:42:21,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151326188] [2024-06-14 13:42:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:42:21,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:42:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:42:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:42:24,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:42:24,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151326188] [2024-06-14 13:42:24,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151326188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:42:24,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:42:24,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:42:24,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301206562] [2024-06-14 13:42:24,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:42:24,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:42:24,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:42:24,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:42:24,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:42:24,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:42:24,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 265 transitions, 3067 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:24,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:42:24,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:42:24,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:42:28,073 INFO L124 PetriNetUnfolderBase]: 10591/15366 cut-off events. [2024-06-14 13:42:28,074 INFO L125 PetriNetUnfolderBase]: For 552396/552461 co-relation queries the response was YES. [2024-06-14 13:42:28,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98459 conditions, 15366 events. 10591/15366 cut-off events. For 552396/552461 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 91189 event pairs, 3655 based on Foata normal form. 69/15399 useless extension candidates. Maximal degree in co-relation 98373. Up to 14425 conditions per place. [2024-06-14 13:42:28,234 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 244 selfloop transitions, 47 changer transitions 0/306 dead transitions. [2024-06-14 13:42:28,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 306 transitions, 3953 flow [2024-06-14 13:42:28,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:42:28,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:42:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-14 13:42:28,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-06-14 13:42:28,236 INFO L175 Difference]: Start difference. First operand has 181 places, 265 transitions, 3067 flow. Second operand 6 states and 158 transitions. [2024-06-14 13:42:28,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 306 transitions, 3953 flow [2024-06-14 13:42:29,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 306 transitions, 3887 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-14 13:42:29,022 INFO L231 Difference]: Finished difference. Result has 185 places, 272 transitions, 3223 flow [2024-06-14 13:42:29,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3223, PETRI_PLACES=185, PETRI_TRANSITIONS=272} [2024-06-14 13:42:29,023 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 127 predicate places. [2024-06-14 13:42:29,023 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 272 transitions, 3223 flow [2024-06-14 13:42:29,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:29,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:42:29,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:42:29,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 13:42:29,023 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:42:29,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:42:29,024 INFO L85 PathProgramCache]: Analyzing trace with hash 903213958, now seen corresponding path program 3 times [2024-06-14 13:42:29,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:42:29,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507601962] [2024-06-14 13:42:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:42:29,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:42:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:42:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:42:32,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:42:32,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507601962] [2024-06-14 13:42:32,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507601962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:42:32,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:42:32,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:42:32,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752298732] [2024-06-14 13:42:32,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:42:32,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:42:32,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:42:32,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:42:32,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:42:32,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:42:32,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 272 transitions, 3223 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:32,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:42:32,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:42:32,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:42:35,507 INFO L124 PetriNetUnfolderBase]: 10575/15344 cut-off events. [2024-06-14 13:42:35,507 INFO L125 PetriNetUnfolderBase]: For 579515/579655 co-relation queries the response was YES. [2024-06-14 13:42:35,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98756 conditions, 15344 events. 10575/15344 cut-off events. For 579515/579655 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 91074 event pairs, 3692 based on Foata normal form. 127/15424 useless extension candidates. Maximal degree in co-relation 98668. Up to 14413 conditions per place. [2024-06-14 13:42:35,667 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 236 selfloop transitions, 46 changer transitions 0/297 dead transitions. [2024-06-14 13:42:35,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 297 transitions, 3862 flow [2024-06-14 13:42:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:42:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:42:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-14 13:42:35,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-14 13:42:35,669 INFO L175 Difference]: Start difference. First operand has 185 places, 272 transitions, 3223 flow. Second operand 6 states and 147 transitions. [2024-06-14 13:42:35,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 297 transitions, 3862 flow [2024-06-14 13:42:36,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 297 transitions, 3761 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-14 13:42:36,744 INFO L231 Difference]: Finished difference. Result has 187 places, 273 transitions, 3231 flow [2024-06-14 13:42:36,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3231, PETRI_PLACES=187, PETRI_TRANSITIONS=273} [2024-06-14 13:42:36,744 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 129 predicate places. [2024-06-14 13:42:36,744 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 273 transitions, 3231 flow [2024-06-14 13:42:36,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:36,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:42:36,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:42:36,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 13:42:36,745 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:42:36,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:42:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash 737464894, now seen corresponding path program 1 times [2024-06-14 13:42:36,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:42:36,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103352624] [2024-06-14 13:42:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:42:36,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:42:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:42:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:42:39,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:42:39,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103352624] [2024-06-14 13:42:39,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103352624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:42:39,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:42:39,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:42:39,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624441140] [2024-06-14 13:42:39,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:42:39,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:42:39,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:42:39,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:42:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:42:39,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:42:39,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 273 transitions, 3231 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:39,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:42:39,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:42:39,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:42:43,101 INFO L124 PetriNetUnfolderBase]: 10161/14753 cut-off events. [2024-06-14 13:42:43,101 INFO L125 PetriNetUnfolderBase]: For 577428/578962 co-relation queries the response was YES. [2024-06-14 13:42:43,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98174 conditions, 14753 events. 10161/14753 cut-off events. For 577428/578962 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 87582 event pairs, 2979 based on Foata normal form. 78/14614 useless extension candidates. Maximal degree in co-relation 98086. Up to 14009 conditions per place. [2024-06-14 13:42:43,243 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 261 selfloop transitions, 34 changer transitions 0/310 dead transitions. [2024-06-14 13:42:43,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 310 transitions, 4171 flow [2024-06-14 13:42:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:42:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:42:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-14 13:42:43,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-14 13:42:43,245 INFO L175 Difference]: Start difference. First operand has 187 places, 273 transitions, 3231 flow. Second operand 6 states and 153 transitions. [2024-06-14 13:42:43,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 310 transitions, 4171 flow [2024-06-14 13:42:43,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 310 transitions, 4103 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 13:42:43,908 INFO L231 Difference]: Finished difference. Result has 190 places, 281 transitions, 3384 flow [2024-06-14 13:42:43,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3384, PETRI_PLACES=190, PETRI_TRANSITIONS=281} [2024-06-14 13:42:43,908 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 132 predicate places. [2024-06-14 13:42:43,908 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 281 transitions, 3384 flow [2024-06-14 13:42:43,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:43,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:42:43,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:42:43,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 13:42:43,909 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:42:43,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:42:43,909 INFO L85 PathProgramCache]: Analyzing trace with hash 242109580, now seen corresponding path program 2 times [2024-06-14 13:42:43,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:42:43,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563144600] [2024-06-14 13:42:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:42:43,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:42:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:42:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:42:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:42:46,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563144600] [2024-06-14 13:42:46,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563144600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:42:46,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:42:46,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:42:46,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835651435] [2024-06-14 13:42:46,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:42:46,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:42:46,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:42:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:42:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:42:46,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:42:46,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 281 transitions, 3384 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:46,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:42:46,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:42:46,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:42:49,723 INFO L124 PetriNetUnfolderBase]: 10154/14744 cut-off events. [2024-06-14 13:42:49,724 INFO L125 PetriNetUnfolderBase]: For 615354/616914 co-relation queries the response was YES. [2024-06-14 13:42:49,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100641 conditions, 14744 events. 10154/14744 cut-off events. For 615354/616914 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 87493 event pairs, 2979 based on Foata normal form. 76/14604 useless extension candidates. Maximal degree in co-relation 100551. Up to 14013 conditions per place. [2024-06-14 13:42:49,862 INFO L140 encePairwiseOnDemand]: 45/55 looper letters, 258 selfloop transitions, 30 changer transitions 0/303 dead transitions. [2024-06-14 13:42:49,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 303 transitions, 4014 flow [2024-06-14 13:42:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:42:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:42:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-14 13:42:49,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-06-14 13:42:49,864 INFO L175 Difference]: Start difference. First operand has 190 places, 281 transitions, 3384 flow. Second operand 5 states and 130 transitions. [2024-06-14 13:42:49,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 303 transitions, 4014 flow [2024-06-14 13:42:50,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 303 transitions, 3889 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-06-14 13:42:50,554 INFO L231 Difference]: Finished difference. Result has 193 places, 281 transitions, 3335 flow [2024-06-14 13:42:50,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3335, PETRI_PLACES=193, PETRI_TRANSITIONS=281} [2024-06-14 13:42:50,555 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 135 predicate places. [2024-06-14 13:42:50,555 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 281 transitions, 3335 flow [2024-06-14 13:42:50,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:50,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:42:50,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:42:50,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 13:42:50,555 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:42:50,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:42:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash 903228838, now seen corresponding path program 1 times [2024-06-14 13:42:50,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:42:50,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523619391] [2024-06-14 13:42:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:42:50,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:42:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:42:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:42:53,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:42:53,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523619391] [2024-06-14 13:42:53,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523619391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:42:53,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:42:53,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:42:53,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753235007] [2024-06-14 13:42:53,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:42:53,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:42:53,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:42:53,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:42:53,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:42:53,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 55 [2024-06-14 13:42:53,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 281 transitions, 3335 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:53,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:42:53,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 55 [2024-06-14 13:42:53,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:42:56,734 INFO L124 PetriNetUnfolderBase]: 10569/15361 cut-off events. [2024-06-14 13:42:56,734 INFO L125 PetriNetUnfolderBase]: For 634110/634178 co-relation queries the response was YES. [2024-06-14 13:42:56,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101602 conditions, 15361 events. 10569/15361 cut-off events. For 634110/634178 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 91513 event pairs, 3566 based on Foata normal form. 75/15404 useless extension candidates. Maximal degree in co-relation 101510. Up to 14540 conditions per place. [2024-06-14 13:42:56,881 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 276 selfloop transitions, 18 changer transitions 0/309 dead transitions. [2024-06-14 13:42:56,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 309 transitions, 4022 flow [2024-06-14 13:42:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:42:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:42:56,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-14 13:42:56,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-14 13:42:56,883 INFO L175 Difference]: Start difference. First operand has 193 places, 281 transitions, 3335 flow. Second operand 6 states and 145 transitions. [2024-06-14 13:42:56,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 309 transitions, 4022 flow [2024-06-14 13:42:57,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 309 transitions, 3962 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-14 13:42:57,543 INFO L231 Difference]: Finished difference. Result has 195 places, 284 transitions, 3355 flow [2024-06-14 13:42:57,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3275, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3355, PETRI_PLACES=195, PETRI_TRANSITIONS=284} [2024-06-14 13:42:57,544 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 137 predicate places. [2024-06-14 13:42:57,544 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 284 transitions, 3355 flow [2024-06-14 13:42:57,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:42:57,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:42:57,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:42:57,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 13:42:57,545 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:42:57,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:42:57,545 INFO L85 PathProgramCache]: Analyzing trace with hash 842022632, now seen corresponding path program 1 times [2024-06-14 13:42:57,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:42:57,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634587791] [2024-06-14 13:42:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:42:57,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:42:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:43:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:43:01,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:43:01,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634587791] [2024-06-14 13:43:01,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634587791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:43:01,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:43:01,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:43:01,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171046511] [2024-06-14 13:43:01,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:43:01,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:43:01,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:43:01,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:43:01,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:43:01,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-06-14 13:43:01,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 284 transitions, 3355 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:43:01,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:43:01,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-06-14 13:43:01,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:43:05,590 INFO L124 PetriNetUnfolderBase]: 11025/15860 cut-off events. [2024-06-14 13:43:05,590 INFO L125 PetriNetUnfolderBase]: For 662453/662453 co-relation queries the response was YES. [2024-06-14 13:43:05,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106100 conditions, 15860 events. 11025/15860 cut-off events. For 662453/662453 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 92708 event pairs, 3602 based on Foata normal form. 2/15857 useless extension candidates. Maximal degree in co-relation 106007. Up to 15136 conditions per place. [2024-06-14 13:43:05,756 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 324 selfloop transitions, 44 changer transitions 0/375 dead transitions. [2024-06-14 13:43:05,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 375 transitions, 4724 flow [2024-06-14 13:43:05,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:43:05,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:43:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-14 13:43:05,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-14 13:43:05,757 INFO L175 Difference]: Start difference. First operand has 195 places, 284 transitions, 3355 flow. Second operand 8 states and 203 transitions. [2024-06-14 13:43:05,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 375 transitions, 4724 flow [2024-06-14 13:43:06,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 375 transitions, 4661 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 13:43:06,517 INFO L231 Difference]: Finished difference. Result has 203 places, 321 transitions, 3810 flow [2024-06-14 13:43:06,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3810, PETRI_PLACES=203, PETRI_TRANSITIONS=321} [2024-06-14 13:43:06,518 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 145 predicate places. [2024-06-14 13:43:06,518 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 321 transitions, 3810 flow [2024-06-14 13:43:06,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:43:06,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:43:06,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:43:06,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 13:43:06,518 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:43:06,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:43:06,518 INFO L85 PathProgramCache]: Analyzing trace with hash 851277062, now seen corresponding path program 2 times [2024-06-14 13:43:06,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:43:06,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401672689] [2024-06-14 13:43:06,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:43:06,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:43:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:43:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:43:10,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:43:10,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401672689] [2024-06-14 13:43:10,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401672689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:43:10,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:43:10,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:43:10,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70049587] [2024-06-14 13:43:10,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:43:10,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:43:10,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:43:10,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:43:10,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:43:10,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-06-14 13:43:10,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 321 transitions, 3810 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:43:10,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:43:10,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-06-14 13:43:10,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:43:14,958 INFO L124 PetriNetUnfolderBase]: 11089/15962 cut-off events. [2024-06-14 13:43:14,958 INFO L125 PetriNetUnfolderBase]: For 699474/699474 co-relation queries the response was YES. [2024-06-14 13:43:15,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110042 conditions, 15962 events. 11089/15962 cut-off events. For 699474/699474 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 93565 event pairs, 3602 based on Foata normal form. 2/15959 useless extension candidates. Maximal degree in co-relation 109944. Up to 15197 conditions per place. [2024-06-14 13:43:15,448 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 322 selfloop transitions, 53 changer transitions 0/382 dead transitions. [2024-06-14 13:43:15,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 382 transitions, 5166 flow [2024-06-14 13:43:15,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:43:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:43:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-14 13:43:15,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-14 13:43:15,450 INFO L175 Difference]: Start difference. First operand has 203 places, 321 transitions, 3810 flow. Second operand 8 states and 199 transitions. [2024-06-14 13:43:15,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 382 transitions, 5166 flow [2024-06-14 13:43:16,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 382 transitions, 5118 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-14 13:43:16,246 INFO L231 Difference]: Finished difference. Result has 212 places, 335 transitions, 4067 flow [2024-06-14 13:43:16,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4067, PETRI_PLACES=212, PETRI_TRANSITIONS=335} [2024-06-14 13:43:16,246 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 154 predicate places. [2024-06-14 13:43:16,246 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 335 transitions, 4067 flow [2024-06-14 13:43:16,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:43:16,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:43:16,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:43:16,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 13:43:16,247 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:43:16,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:43:16,247 INFO L85 PathProgramCache]: Analyzing trace with hash -292200554, now seen corresponding path program 3 times [2024-06-14 13:43:16,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:43:16,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553849492] [2024-06-14 13:43:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:43:16,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:43:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:43:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:43:19,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:43:19,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553849492] [2024-06-14 13:43:19,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553849492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:43:19,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:43:19,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:43:19,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97844646] [2024-06-14 13:43:19,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:43:19,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:43:19,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:43:19,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:43:19,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:43:19,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-06-14 13:43:19,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 335 transitions, 4067 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:43:19,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:43:19,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-06-14 13:43:19,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:43:24,546 INFO L124 PetriNetUnfolderBase]: 11082/15953 cut-off events. [2024-06-14 13:43:24,547 INFO L125 PetriNetUnfolderBase]: For 729177/729177 co-relation queries the response was YES. [2024-06-14 13:43:24,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111061 conditions, 15953 events. 11082/15953 cut-off events. For 729177/729177 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 93456 event pairs, 3602 based on Foata normal form. 2/15950 useless extension candidates. Maximal degree in co-relation 110958. Up to 15190 conditions per place. [2024-06-14 13:43:24,703 INFO L140 encePairwiseOnDemand]: 43/55 looper letters, 319 selfloop transitions, 55 changer transitions 0/381 dead transitions. [2024-06-14 13:43:24,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 381 transitions, 5117 flow [2024-06-14 13:43:24,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:43:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:43:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-14 13:43:24,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-14 13:43:24,705 INFO L175 Difference]: Start difference. First operand has 212 places, 335 transitions, 4067 flow. Second operand 8 states and 196 transitions. [2024-06-14 13:43:24,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 381 transitions, 5117 flow [2024-06-14 13:43:25,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 381 transitions, 5027 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-14 13:43:25,380 INFO L231 Difference]: Finished difference. Result has 217 places, 336 transitions, 4106 flow [2024-06-14 13:43:25,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=3980, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4106, PETRI_PLACES=217, PETRI_TRANSITIONS=336} [2024-06-14 13:43:25,381 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 159 predicate places. [2024-06-14 13:43:25,381 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 336 transitions, 4106 flow [2024-06-14 13:43:25,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:43:25,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:43:25,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:43:25,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 13:43:25,381 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:43:25,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:43:25,382 INFO L85 PathProgramCache]: Analyzing trace with hash -2065137118, now seen corresponding path program 4 times [2024-06-14 13:43:25,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:43:25,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149071169] [2024-06-14 13:43:25,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:43:25,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:43:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:43:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:43:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:43:29,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149071169] [2024-06-14 13:43:29,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149071169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:43:29,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:43:29,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:43:29,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913803453] [2024-06-14 13:43:29,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:43:29,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:43:29,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:43:29,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:43:29,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:43:29,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-06-14 13:43:29,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 336 transitions, 4106 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:43:29,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:43:29,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-06-14 13:43:29,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:43:33,564 INFO L124 PetriNetUnfolderBase]: 11101/15982 cut-off events. [2024-06-14 13:43:33,564 INFO L125 PetriNetUnfolderBase]: For 763226/763261 co-relation queries the response was YES. [2024-06-14 13:43:33,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111979 conditions, 15982 events. 11101/15982 cut-off events. For 763226/763261 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 93706 event pairs, 3648 based on Foata normal form. 18/15989 useless extension candidates. Maximal degree in co-relation 111875. Up to 15210 conditions per place. [2024-06-14 13:43:33,723 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 307 selfloop transitions, 60 changer transitions 0/374 dead transitions. [2024-06-14 13:43:33,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 374 transitions, 5176 flow [2024-06-14 13:43:33,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:43:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:43:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-14 13:43:33,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43116883116883115 [2024-06-14 13:43:33,725 INFO L175 Difference]: Start difference. First operand has 217 places, 336 transitions, 4106 flow. Second operand 7 states and 166 transitions. [2024-06-14 13:43:33,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 374 transitions, 5176 flow [2024-06-14 13:43:34,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 374 transitions, 5079 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 13:43:34,608 INFO L231 Difference]: Finished difference. Result has 221 places, 343 transitions, 4250 flow [2024-06-14 13:43:34,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=4021, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4250, PETRI_PLACES=221, PETRI_TRANSITIONS=343} [2024-06-14 13:43:34,609 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 163 predicate places. [2024-06-14 13:43:34,609 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 343 transitions, 4250 flow [2024-06-14 13:43:34,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:43:34,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:43:34,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:43:34,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 13:43:34,609 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:43:34,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:43:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash 405813142, now seen corresponding path program 5 times [2024-06-14 13:43:34,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:43:34,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866231552] [2024-06-14 13:43:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:43:34,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:43:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:43:38,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:43:38,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:43:38,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866231552] [2024-06-14 13:43:38,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866231552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:43:38,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:43:38,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:43:38,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048479498] [2024-06-14 13:43:38,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:43:38,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:43:38,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:43:38,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:43:38,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:43:38,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 55 [2024-06-14 13:43:38,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 343 transitions, 4250 flow. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:43:38,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:43:38,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 55 [2024-06-14 13:43:38,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:43:42,819 INFO L124 PetriNetUnfolderBase]: 11120/16015 cut-off events. [2024-06-14 13:43:42,820 INFO L125 PetriNetUnfolderBase]: For 791941/791941 co-relation queries the response was YES. [2024-06-14 13:43:42,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113082 conditions, 16015 events. 11120/16015 cut-off events. For 791941/791941 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 93985 event pairs, 3602 based on Foata normal form. 2/16012 useless extension candidates. Maximal degree in co-relation 112976. Up to 15230 conditions per place. [2024-06-14 13:43:43,092 INFO L140 encePairwiseOnDemand]: 44/55 looper letters, 313 selfloop transitions, 66 changer transitions 0/386 dead transitions. [2024-06-14 13:43:43,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 386 transitions, 5333 flow [2024-06-14 13:43:43,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:43:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:43:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-14 13:43:43,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-14 13:43:43,094 INFO L175 Difference]: Start difference. First operand has 221 places, 343 transitions, 4250 flow. Second operand 7 states and 175 transitions. [2024-06-14 13:43:43,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 386 transitions, 5333 flow [2024-06-14 13:43:43,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 386 transitions, 5240 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-14 13:43:43,927 INFO L231 Difference]: Finished difference. Result has 226 places, 347 transitions, 4353 flow [2024-06-14 13:43:43,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=4167, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4353, PETRI_PLACES=226, PETRI_TRANSITIONS=347} [2024-06-14 13:43:43,928 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 168 predicate places. [2024-06-14 13:43:43,928 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 347 transitions, 4353 flow [2024-06-14 13:43:43,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:43:43,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:43:43,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:43:43,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 13:43:43,928 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-14 13:43:43,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:43:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash 405801982, now seen corresponding path program 6 times [2024-06-14 13:43:43,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:43:43,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340737854] [2024-06-14 13:43:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:43:43,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:43:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat