./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_power.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_power.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_power.oepc.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-eb4cb34-m [2024-06-21 22:12:16,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 22:12:16,768 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 22:12:16,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 22:12:16,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 22:12:16,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 22:12:16,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 22:12:16,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 22:12:16,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 22:12:16,804 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 22:12:16,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 22:12:16,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 22:12:16,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 22:12:16,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 22:12:16,806 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 22:12:16,807 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 22:12:16,807 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 22:12:16,808 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 22:12:16,808 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 22:12:16,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 22:12:16,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 22:12:16,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 22:12:16,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 22:12:16,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 22:12:16,813 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 22:12:16,813 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 22:12:16,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 22:12:16,814 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 22:12:16,814 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 22:12:16,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 22:12:16,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 22:12:16,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 22:12:16,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 22:12:16,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 22:12:16,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 22:12:16,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 22:12:16,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 22:12:16,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 22:12:16,816 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 22:12:16,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 22:12:16,817 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 22:12:16,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 22:12:16,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 22:12:16,817 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 22:12:17,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 22:12:17,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 22:12:17,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 22:12:17,055 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 22:12:17,056 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 22:12:17,056 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_power.oepc.i [2024-06-21 22:12:17,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 22:12:18,160 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 22:12:18,166 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_power.oepc.i [2024-06-21 22:12:18,177 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d4ec38d/e54e8937b4da46adb5ebda0bb8bea8a9/FLAGb0ee736e6 [2024-06-21 22:12:18,509 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90d4ec38d/e54e8937b4da46adb5ebda0bb8bea8a9 [2024-06-21 22:12:18,511 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 22:12:18,512 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 22:12:18,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_power.oepc.yml/witness.yml [2024-06-21 22:12:18,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 22:12:18,742 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 22:12:18,745 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 22:12:18,745 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 22:12:18,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 22:12:18,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:12:18" (1/2) ... [2024-06-21 22:12:18,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d882269 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:12:18, skipping insertion in model container [2024-06-21 22:12:18,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 10:12:18" (1/2) ... [2024-06-21 22:12:18,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51bd6fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 10:12:18, skipping insertion in model container [2024-06-21 22:12:18,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 10:12:18" (2/2) ... [2024-06-21 22:12:18,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d882269 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:18, skipping insertion in model container [2024-06-21 22:12:18,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 10:12:18" (2/2) ... [2024-06-21 22:12:18,752 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 22:12:18,910 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 22:12:18,912 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-21 22:12:18,912 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-21 22:12:18,912 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-21 22:12:18,913 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-21 22:12:18,913 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 22:12:18,914 INFO L106 edCorrectnessWitness]: ghost_update [L862-L862] multithreaded = 1; [2024-06-21 22:12:18,957 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 22:12:19,261 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 22:12:19,268 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 22:12:19,379 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 22:12:19,425 INFO L206 MainTranslator]: Completed translation [2024-06-21 22:12:19,425 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19 WrapperNode [2024-06-21 22:12:19,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 22:12:19,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 22:12:19,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 22:12:19,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 22:12:19,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,506 INFO L138 Inliner]: procedures = 176, calls = 99, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 248 [2024-06-21 22:12:19,507 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 22:12:19,508 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 22:12:19,508 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 22:12:19,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 22:12:19,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,530 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,560 INFO L175 MemorySlicer]: Split 49 memory accesses to 2 slices as follows [2, 47]. 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]. [2024-06-21 22:12:19,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,581 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,614 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 22:12:19,624 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 22:12:19,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 22:12:19,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 22:12:19,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (1/1) ... [2024-06-21 22:12:19,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 22:12:19,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 22:12:19,659 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) [2024-06-21 22:12:19,696 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 [2024-06-21 22:12:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 22:12:19,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 22:12:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 22:12:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 22:12:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 22:12:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 22:12:19,721 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 22:12:19,721 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 22:12:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 22:12:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 22:12:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 22:12:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 22:12:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 22:12:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 22:12:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 22:12:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 22:12:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 22:12:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 22:12:19,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 22:12:19,725 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 22:12:19,881 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 22:12:19,882 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 22:12:20,382 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 22:12:20,383 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 22:12:20,775 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 22:12:20,775 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 22:12:20,775 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:12:20 BoogieIcfgContainer [2024-06-21 22:12:20,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 22:12:20,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 22:12:20,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 22:12:20,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 22:12:20,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 10:12:18" (1/4) ... [2024-06-21 22:12:20,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223073b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 10:12:20, skipping insertion in model container [2024-06-21 22:12:20,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 10:12:18" (2/4) ... [2024-06-21 22:12:20,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223073b8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 10:12:20, skipping insertion in model container [2024-06-21 22:12:20,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 10:12:19" (3/4) ... [2024-06-21 22:12:20,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223073b8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 10:12:20, skipping insertion in model container [2024-06-21 22:12:20,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 10:12:20" (4/4) ... [2024-06-21 22:12:20,784 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_power.oepc.i [2024-06-21 22:12:20,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 22:12:20,799 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 22:12:20,799 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 22:12:20,866 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 22:12:20,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 54 transitions, 124 flow [2024-06-21 22:12:20,932 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2024-06-21 22:12:20,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 22:12:20,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 22:12:20,935 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 54 transitions, 124 flow [2024-06-21 22:12:20,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 44 transitions, 100 flow [2024-06-21 22:12:20,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 22:12:21,000 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;@5777260b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 22:12:21,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 22:12:21,011 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 22:12:21,012 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-21 22:12:21,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 22:12:21,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:12:21,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 22:12:21,013 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)] === [2024-06-21 22:12:21,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:12:21,017 INFO L85 PathProgramCache]: Analyzing trace with hash 794485398, now seen corresponding path program 1 times [2024-06-21 22:12:21,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:12:21,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175793599] [2024-06-21 22:12:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:12:21,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:12:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:12:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:12:23,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:12:23,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175793599] [2024-06-21 22:12:23,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175793599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:12:23,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:12:23,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 22:12:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772599214] [2024-06-21 22:12:23,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:12:23,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 22:12:23,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:12:23,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 22:12:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 22:12:23,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-21 22:12:23,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:23,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:12:23,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-21 22:12:23,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:12:24,521 INFO L124 PetriNetUnfolderBase]: 4406/6336 cut-off events. [2024-06-21 22:12:24,521 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-06-21 22:12:24,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12682 conditions, 6336 events. 4406/6336 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 34488 event pairs, 3188 based on Foata normal form. 1/6202 useless extension candidates. Maximal degree in co-relation 12669. Up to 6114 conditions per place. [2024-06-21 22:12:24,559 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 45 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-21 22:12:24,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 243 flow [2024-06-21 22:12:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 22:12:24,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 22:12:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-21 22:12:24,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-21 22:12:24,571 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 100 flow. Second operand 3 states and 99 transitions. [2024-06-21 22:12:24,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 243 flow [2024-06-21 22:12:24,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 236 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 22:12:24,578 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 135 flow [2024-06-21 22:12:24,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-21 22:12:24,582 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2024-06-21 22:12:24,582 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 135 flow [2024-06-21 22:12:24,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:24,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:12:24,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:12:24,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 22:12:24,584 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)] === [2024-06-21 22:12:24,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:12:24,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1003668299, now seen corresponding path program 1 times [2024-06-21 22:12:24,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:12:24,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064042584] [2024-06-21 22:12:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:12:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:12:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:12:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:12:27,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:12:27,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064042584] [2024-06-21 22:12:27,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064042584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:12:27,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:12:27,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 22:12:27,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029198324] [2024-06-21 22:12:27,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:12:27,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 22:12:27,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:12:27,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 22:12:27,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 22:12:27,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-21 22:12:27,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:27,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:12:27,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-21 22:12:27,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:12:28,706 INFO L124 PetriNetUnfolderBase]: 4396/6307 cut-off events. [2024-06-21 22:12:28,707 INFO L125 PetriNetUnfolderBase]: For 1199/1209 co-relation queries the response was YES. [2024-06-21 22:12:28,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14561 conditions, 6307 events. 4396/6307 cut-off events. For 1199/1209 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 34087 event pairs, 2767 based on Foata normal form. 10/6312 useless extension candidates. Maximal degree in co-relation 14549. Up to 6073 conditions per place. [2024-06-21 22:12:28,735 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 58 selfloop transitions, 9 changer transitions 0/78 dead transitions. [2024-06-21 22:12:28,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 78 transitions, 347 flow [2024-06-21 22:12:28,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 22:12:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 22:12:28,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-06-21 22:12:28,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2024-06-21 22:12:28,737 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 135 flow. Second operand 4 states and 131 transitions. [2024-06-21 22:12:28,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 78 transitions, 347 flow [2024-06-21 22:12:28,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 78 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 22:12:28,739 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 183 flow [2024-06-21 22:12:28,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-06-21 22:12:28,740 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2024-06-21 22:12:28,740 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 183 flow [2024-06-21 22:12:28,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:28,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:12:28,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:12:28,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 22:12:28,741 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)] === [2024-06-21 22:12:28,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:12:28,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1048944795, now seen corresponding path program 1 times [2024-06-21 22:12:28,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:12:28,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882640318] [2024-06-21 22:12:28,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:12:28,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:12:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:12:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:12:31,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:12:31,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882640318] [2024-06-21 22:12:31,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882640318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:12:31,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:12:31,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 22:12:31,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545523897] [2024-06-21 22:12:31,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:12:31,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 22:12:31,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:12:31,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 22:12:31,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 22:12:31,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-21 22:12:31,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:31,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:12:31,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-21 22:12:31,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:12:33,623 INFO L124 PetriNetUnfolderBase]: 5573/7932 cut-off events. [2024-06-21 22:12:33,624 INFO L125 PetriNetUnfolderBase]: For 4121/4139 co-relation queries the response was YES. [2024-06-21 22:12:33,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20459 conditions, 7932 events. 5573/7932 cut-off events. For 4121/4139 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 42977 event pairs, 2919 based on Foata normal form. 16/7944 useless extension candidates. Maximal degree in co-relation 20445. Up to 7638 conditions per place. [2024-06-21 22:12:33,659 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 80 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2024-06-21 22:12:33,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 103 transitions, 523 flow [2024-06-21 22:12:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 22:12:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 22:12:33,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-06-21 22:12:33,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-21 22:12:33,664 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 183 flow. Second operand 5 states and 159 transitions. [2024-06-21 22:12:33,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 103 transitions, 523 flow [2024-06-21 22:12:33,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 103 transitions, 492 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-21 22:12:33,670 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 279 flow [2024-06-21 22:12:33,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=279, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2024-06-21 22:12:33,671 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2024-06-21 22:12:33,671 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 279 flow [2024-06-21 22:12:33,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:33,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:12:33,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:12:33,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 22:12:33,672 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)] === [2024-06-21 22:12:33,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:12:33,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2137313752, now seen corresponding path program 1 times [2024-06-21 22:12:33,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:12:33,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426188089] [2024-06-21 22:12:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:12:33,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:12:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:12:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:12:37,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:12:37,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426188089] [2024-06-21 22:12:37,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426188089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:12:37,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:12:37,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 22:12:37,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963160349] [2024-06-21 22:12:37,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:12:37,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 22:12:37,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:12:37,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 22:12:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 22:12:37,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-06-21 22:12:37,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:37,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:12:37,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-06-21 22:12:37,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:12:38,725 INFO L124 PetriNetUnfolderBase]: 5557/7912 cut-off events. [2024-06-21 22:12:38,725 INFO L125 PetriNetUnfolderBase]: For 7471/7516 co-relation queries the response was YES. [2024-06-21 22:12:38,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22651 conditions, 7912 events. 5557/7912 cut-off events. For 7471/7516 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 42869 event pairs, 2329 based on Foata normal form. 32/7940 useless extension candidates. Maximal degree in co-relation 22634. Up to 7560 conditions per place. [2024-06-21 22:12:38,769 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 89 selfloop transitions, 16 changer transitions 0/115 dead transitions. [2024-06-21 22:12:38,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 115 transitions, 621 flow [2024-06-21 22:12:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 22:12:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 22:12:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-21 22:12:38,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709876543209876 [2024-06-21 22:12:38,771 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 279 flow. Second operand 6 states and 185 transitions. [2024-06-21 22:12:38,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 115 transitions, 621 flow [2024-06-21 22:12:38,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 115 transitions, 613 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-21 22:12:38,775 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 331 flow [2024-06-21 22:12:38,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-06-21 22:12:38,776 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2024-06-21 22:12:38,776 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 331 flow [2024-06-21 22:12:38,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:38,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:12:38,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:12:38,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 22:12:38,777 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)] === [2024-06-21 22:12:38,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:12:38,777 INFO L85 PathProgramCache]: Analyzing trace with hash -463983113, now seen corresponding path program 1 times [2024-06-21 22:12:38,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:12:38,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583361620] [2024-06-21 22:12:38,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:12:38,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:12:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:12:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:12:40,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:12:40,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583361620] [2024-06-21 22:12:40,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583361620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:12:40,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:12:40,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 22:12:40,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137157962] [2024-06-21 22:12:40,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:12:40,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 22:12:40,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:12:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 22:12:40,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 22:12:40,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:12:40,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:40,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:12:40,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:12:40,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:12:42,821 INFO L124 PetriNetUnfolderBase]: 6976/9833 cut-off events. [2024-06-21 22:12:42,821 INFO L125 PetriNetUnfolderBase]: For 14047/14073 co-relation queries the response was YES. [2024-06-21 22:12:42,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29910 conditions, 9833 events. 6976/9833 cut-off events. For 14047/14073 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 52967 event pairs, 3445 based on Foata normal form. 13/9840 useless extension candidates. Maximal degree in co-relation 29889. Up to 9532 conditions per place. [2024-06-21 22:12:42,878 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 79 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-06-21 22:12:42,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 99 transitions, 633 flow [2024-06-21 22:12:42,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 22:12:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 22:12:42,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-21 22:12:42,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-21 22:12:42,886 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 331 flow. Second operand 5 states and 129 transitions. [2024-06-21 22:12:42,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 99 transitions, 633 flow [2024-06-21 22:12:42,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 99 transitions, 585 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-21 22:12:42,894 INFO L231 Difference]: Finished difference. Result has 71 places, 76 transitions, 404 flow [2024-06-21 22:12:42,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=404, PETRI_PLACES=71, PETRI_TRANSITIONS=76} [2024-06-21 22:12:42,897 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2024-06-21 22:12:42,897 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 76 transitions, 404 flow [2024-06-21 22:12:42,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:42,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:12:42,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:12:42,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 22:12:42,898 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)] === [2024-06-21 22:12:42,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:12:42,898 INFO L85 PathProgramCache]: Analyzing trace with hash 611409116, now seen corresponding path program 1 times [2024-06-21 22:12:42,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:12:42,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037702247] [2024-06-21 22:12:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:12:42,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:12:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:12:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:12:46,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:12:46,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037702247] [2024-06-21 22:12:46,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037702247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:12:46,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:12:46,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 22:12:46,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794193560] [2024-06-21 22:12:46,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:12:46,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 22:12:46,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:12:46,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 22:12:46,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 22:12:46,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-21 22:12:46,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 76 transitions, 404 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:46,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:12:46,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-21 22:12:46,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:12:49,294 INFO L124 PetriNetUnfolderBase]: 6834/9676 cut-off events. [2024-06-21 22:12:49,294 INFO L125 PetriNetUnfolderBase]: For 21497/21647 co-relation queries the response was YES. [2024-06-21 22:12:49,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32970 conditions, 9676 events. 6834/9676 cut-off events. For 21497/21647 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 53000 event pairs, 3028 based on Foata normal form. 49/9692 useless extension candidates. Maximal degree in co-relation 32946. Up to 9201 conditions per place. [2024-06-21 22:12:49,341 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 91 selfloop transitions, 33 changer transitions 0/135 dead transitions. [2024-06-21 22:12:49,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 135 transitions, 870 flow [2024-06-21 22:12:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 22:12:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 22:12:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-21 22:12:49,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-21 22:12:49,343 INFO L175 Difference]: Start difference. First operand has 71 places, 76 transitions, 404 flow. Second operand 7 states and 198 transitions. [2024-06-21 22:12:49,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 135 transitions, 870 flow [2024-06-21 22:12:49,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 135 transitions, 858 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-21 22:12:49,352 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 541 flow [2024-06-21 22:12:49,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-21 22:12:49,352 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2024-06-21 22:12:49,352 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 541 flow [2024-06-21 22:12:49,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:49,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:12:49,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:12:49,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 22:12:49,353 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)] === [2024-06-21 22:12:49,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:12:49,354 INFO L85 PathProgramCache]: Analyzing trace with hash -80210704, now seen corresponding path program 1 times [2024-06-21 22:12:49,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:12:49,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628233878] [2024-06-21 22:12:49,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:12:49,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:12:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:12:52,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:12:52,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:12:52,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628233878] [2024-06-21 22:12:52,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628233878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:12:52,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:12:52,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 22:12:52,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546457260] [2024-06-21 22:12:52,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:12:52,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 22:12:52,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:12:52,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 22:12:52,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 22:12:52,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:12:52,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 541 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:52,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:12:52,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:12:52,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:12:55,281 INFO L124 PetriNetUnfolderBase]: 7076/9992 cut-off events. [2024-06-21 22:12:55,282 INFO L125 PetriNetUnfolderBase]: For 28216/28264 co-relation queries the response was YES. [2024-06-21 22:12:55,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35608 conditions, 9992 events. 7076/9992 cut-off events. For 28216/28264 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 54041 event pairs, 3210 based on Foata normal form. 26/10009 useless extension candidates. Maximal degree in co-relation 35581. Up to 9552 conditions per place. [2024-06-21 22:12:55,342 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 114 selfloop transitions, 28 changer transitions 0/150 dead transitions. [2024-06-21 22:12:55,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 150 transitions, 1104 flow [2024-06-21 22:12:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 22:12:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 22:12:55,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-21 22:12:55,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 22:12:55,344 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 541 flow. Second operand 7 states and 189 transitions. [2024-06-21 22:12:55,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 150 transitions, 1104 flow [2024-06-21 22:12:55,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 150 transitions, 1046 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-21 22:12:55,359 INFO L231 Difference]: Finished difference. Result has 83 places, 101 transitions, 706 flow [2024-06-21 22:12:55,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=706, PETRI_PLACES=83, PETRI_TRANSITIONS=101} [2024-06-21 22:12:55,360 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 26 predicate places. [2024-06-21 22:12:55,360 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 101 transitions, 706 flow [2024-06-21 22:12:55,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:55,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:12:55,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:12:55,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 22:12:55,361 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)] === [2024-06-21 22:12:55,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:12:55,361 INFO L85 PathProgramCache]: Analyzing trace with hash 611529086, now seen corresponding path program 2 times [2024-06-21 22:12:55,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:12:55,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905821431] [2024-06-21 22:12:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:12:55,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:12:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:12:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:12:58,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:12:58,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905821431] [2024-06-21 22:12:58,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905821431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:12:58,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:12:58,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 22:12:58,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750220620] [2024-06-21 22:12:58,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:12:58,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 22:12:58,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:12:58,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 22:12:58,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 22:12:58,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-21 22:12:58,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 101 transitions, 706 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:12:58,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:12:58,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-21 22:12:58,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:13:01,038 INFO L124 PetriNetUnfolderBase]: 6838/9726 cut-off events. [2024-06-21 22:13:01,039 INFO L125 PetriNetUnfolderBase]: For 40748/41420 co-relation queries the response was YES. [2024-06-21 22:13:01,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38194 conditions, 9726 events. 6838/9726 cut-off events. For 40748/41420 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 54504 event pairs, 2900 based on Foata normal form. 81/9524 useless extension candidates. Maximal degree in co-relation 38163. Up to 9183 conditions per place. [2024-06-21 22:13:01,105 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 101 selfloop transitions, 38 changer transitions 0/153 dead transitions. [2024-06-21 22:13:01,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 153 transitions, 1164 flow [2024-06-21 22:13:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 22:13:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 22:13:01,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-21 22:13:01,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-06-21 22:13:01,107 INFO L175 Difference]: Start difference. First operand has 83 places, 101 transitions, 706 flow. Second operand 7 states and 190 transitions. [2024-06-21 22:13:01,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 153 transitions, 1164 flow [2024-06-21 22:13:01,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 153 transitions, 1114 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-21 22:13:01,132 INFO L231 Difference]: Finished difference. Result has 87 places, 109 transitions, 824 flow [2024-06-21 22:13:01,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=824, PETRI_PLACES=87, PETRI_TRANSITIONS=109} [2024-06-21 22:13:01,133 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 30 predicate places. [2024-06-21 22:13:01,133 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 824 flow [2024-06-21 22:13:01,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:01,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:13:01,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:13:01,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 22:13:01,134 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)] === [2024-06-21 22:13:01,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:13:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash 763226920, now seen corresponding path program 3 times [2024-06-21 22:13:01,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:13:01,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185408938] [2024-06-21 22:13:01,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:13:01,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:13:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:13:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:13:04,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:13:04,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185408938] [2024-06-21 22:13:04,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185408938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:13:04,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:13:04,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 22:13:04,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196477740] [2024-06-21 22:13:04,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:13:04,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 22:13:04,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:13:04,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 22:13:04,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 22:13:04,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:13:04,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 824 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:04,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:13:04,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:13:04,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:13:07,241 INFO L124 PetriNetUnfolderBase]: 7125/10090 cut-off events. [2024-06-21 22:13:07,241 INFO L125 PetriNetUnfolderBase]: For 41510/41603 co-relation queries the response was YES. [2024-06-21 22:13:07,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39116 conditions, 10090 events. 7125/10090 cut-off events. For 41510/41603 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 55044 event pairs, 2919 based on Foata normal form. 37/10117 useless extension candidates. Maximal degree in co-relation 39084. Up to 9493 conditions per place. [2024-06-21 22:13:07,298 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 98 selfloop transitions, 44 changer transitions 0/150 dead transitions. [2024-06-21 22:13:07,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 150 transitions, 1213 flow [2024-06-21 22:13:07,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 22:13:07,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 22:13:07,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-21 22:13:07,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-21 22:13:07,301 INFO L175 Difference]: Start difference. First operand has 87 places, 109 transitions, 824 flow. Second operand 6 states and 167 transitions. [2024-06-21 22:13:07,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 150 transitions, 1213 flow [2024-06-21 22:13:07,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 150 transitions, 1097 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-21 22:13:07,337 INFO L231 Difference]: Finished difference. Result has 89 places, 109 transitions, 820 flow [2024-06-21 22:13:07,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=820, PETRI_PLACES=89, PETRI_TRANSITIONS=109} [2024-06-21 22:13:07,337 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2024-06-21 22:13:07,337 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 109 transitions, 820 flow [2024-06-21 22:13:07,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:07,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:13:07,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:13:07,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 22:13:07,338 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)] === [2024-06-21 22:13:07,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:13:07,339 INFO L85 PathProgramCache]: Analyzing trace with hash 763227106, now seen corresponding path program 2 times [2024-06-21 22:13:07,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:13:07,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862075287] [2024-06-21 22:13:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:13:07,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:13:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:13:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:13:10,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:13:10,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862075287] [2024-06-21 22:13:10,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862075287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:13:10,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:13:10,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 22:13:10,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294245279] [2024-06-21 22:13:10,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:13:10,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 22:13:10,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:13:10,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 22:13:10,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 22:13:10,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:13:10,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 109 transitions, 820 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:10,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:13:10,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:13:10,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:13:12,619 INFO L124 PetriNetUnfolderBase]: 7152/10105 cut-off events. [2024-06-21 22:13:12,619 INFO L125 PetriNetUnfolderBase]: For 47175/47248 co-relation queries the response was YES. [2024-06-21 22:13:12,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40039 conditions, 10105 events. 7152/10105 cut-off events. For 47175/47248 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 54567 event pairs, 3208 based on Foata normal form. 39/10135 useless extension candidates. Maximal degree in co-relation 40006. Up to 9646 conditions per place. [2024-06-21 22:13:12,671 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 113 selfloop transitions, 32 changer transitions 0/153 dead transitions. [2024-06-21 22:13:12,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 153 transitions, 1304 flow [2024-06-21 22:13:12,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 22:13:12,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 22:13:12,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-06-21 22:13:12,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-06-21 22:13:12,673 INFO L175 Difference]: Start difference. First operand has 89 places, 109 transitions, 820 flow. Second operand 6 states and 164 transitions. [2024-06-21 22:13:12,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 153 transitions, 1304 flow [2024-06-21 22:13:12,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 153 transitions, 1202 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-21 22:13:12,708 INFO L231 Difference]: Finished difference. Result has 91 places, 114 transitions, 865 flow [2024-06-21 22:13:12,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=865, PETRI_PLACES=91, PETRI_TRANSITIONS=114} [2024-06-21 22:13:12,709 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2024-06-21 22:13:12,709 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 114 transitions, 865 flow [2024-06-21 22:13:12,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:12,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:13:12,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:13:12,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 22:13:12,709 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)] === [2024-06-21 22:13:12,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:13:12,710 INFO L85 PathProgramCache]: Analyzing trace with hash 757624436, now seen corresponding path program 3 times [2024-06-21 22:13:12,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:13:12,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906742351] [2024-06-21 22:13:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:13:12,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:13:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:13:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:13:15,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:13:15,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906742351] [2024-06-21 22:13:15,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906742351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:13:15,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:13:15,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 22:13:15,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489520376] [2024-06-21 22:13:15,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:13:15,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 22:13:15,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:13:15,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 22:13:15,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 22:13:15,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:13:15,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 114 transitions, 865 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:15,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:13:15,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:13:15,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:13:17,923 INFO L124 PetriNetUnfolderBase]: 7143/10107 cut-off events. [2024-06-21 22:13:17,923 INFO L125 PetriNetUnfolderBase]: For 47657/47953 co-relation queries the response was YES. [2024-06-21 22:13:17,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40056 conditions, 10107 events. 7143/10107 cut-off events. For 47657/47953 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 54771 event pairs, 3243 based on Foata normal form. 71/10161 useless extension candidates. Maximal degree in co-relation 40021. Up to 9637 conditions per place. [2024-06-21 22:13:17,976 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 107 selfloop transitions, 32 changer transitions 0/147 dead transitions. [2024-06-21 22:13:17,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 147 transitions, 1232 flow [2024-06-21 22:13:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 22:13:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 22:13:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-21 22:13:17,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-21 22:13:17,978 INFO L175 Difference]: Start difference. First operand has 91 places, 114 transitions, 865 flow. Second operand 6 states and 156 transitions. [2024-06-21 22:13:17,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 147 transitions, 1232 flow [2024-06-21 22:13:18,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 147 transitions, 1156 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-21 22:13:18,008 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 872 flow [2024-06-21 22:13:18,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=872, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2024-06-21 22:13:18,008 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 36 predicate places. [2024-06-21 22:13:18,009 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 872 flow [2024-06-21 22:13:18,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:18,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:13:18,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:13:18,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 22:13:18,009 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)] === [2024-06-21 22:13:18,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:13:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash 757633364, now seen corresponding path program 1 times [2024-06-21 22:13:18,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:13:18,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783647414] [2024-06-21 22:13:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:13:18,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:13:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:13:20,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:13:20,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:13:20,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783647414] [2024-06-21 22:13:20,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783647414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:13:20,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:13:20,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 22:13:20,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693708368] [2024-06-21 22:13:20,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:13:20,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 22:13:20,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:13:20,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 22:13:20,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 22:13:20,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:13:20,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 872 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:20,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:13:20,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:13:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:13:22,572 INFO L124 PetriNetUnfolderBase]: 7128/10076 cut-off events. [2024-06-21 22:13:22,572 INFO L125 PetriNetUnfolderBase]: For 47011/47104 co-relation queries the response was YES. [2024-06-21 22:13:22,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39910 conditions, 10076 events. 7128/10076 cut-off events. For 47011/47104 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 54512 event pairs, 3074 based on Foata normal form. 35/10105 useless extension candidates. Maximal degree in co-relation 39875. Up to 9700 conditions per place. [2024-06-21 22:13:22,634 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 128 selfloop transitions, 15 changer transitions 0/151 dead transitions. [2024-06-21 22:13:22,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 151 transitions, 1267 flow [2024-06-21 22:13:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 22:13:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 22:13:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-21 22:13:22,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-21 22:13:22,635 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 872 flow. Second operand 6 states and 154 transitions. [2024-06-21 22:13:22,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 151 transitions, 1267 flow [2024-06-21 22:13:22,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 151 transitions, 1217 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-21 22:13:22,679 INFO L231 Difference]: Finished difference. Result has 96 places, 118 transitions, 894 flow [2024-06-21 22:13:22,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=894, PETRI_PLACES=96, PETRI_TRANSITIONS=118} [2024-06-21 22:13:22,679 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 39 predicate places. [2024-06-21 22:13:22,679 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 118 transitions, 894 flow [2024-06-21 22:13:22,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:22,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:13:22,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:13:22,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 22:13:22,680 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)] === [2024-06-21 22:13:22,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:13:22,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2068864404, now seen corresponding path program 1 times [2024-06-21 22:13:22,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:13:22,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359441061] [2024-06-21 22:13:22,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:13:22,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:13:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:13:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:13:26,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:13:26,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359441061] [2024-06-21 22:13:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359441061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:13:26,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:13:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:13:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235916560] [2024-06-21 22:13:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:13:26,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:13:26,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:13:26,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:13:26,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:13:26,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:13:26,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 118 transitions, 894 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:26,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:13:26,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:13:26,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:13:29,385 INFO L124 PetriNetUnfolderBase]: 7155/10120 cut-off events. [2024-06-21 22:13:29,385 INFO L125 PetriNetUnfolderBase]: For 56010/56087 co-relation queries the response was YES. [2024-06-21 22:13:29,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41917 conditions, 10120 events. 7155/10120 cut-off events. For 56010/56087 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 54739 event pairs, 3023 based on Foata normal form. 41/10153 useless extension candidates. Maximal degree in co-relation 41880. Up to 9488 conditions per place. [2024-06-21 22:13:29,449 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 142 selfloop transitions, 50 changer transitions 0/200 dead transitions. [2024-06-21 22:13:29,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 200 transitions, 1655 flow [2024-06-21 22:13:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 22:13:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 22:13:29,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2024-06-21 22:13:29,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-21 22:13:29,451 INFO L175 Difference]: Start difference. First operand has 96 places, 118 transitions, 894 flow. Second operand 8 states and 220 transitions. [2024-06-21 22:13:29,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 200 transitions, 1655 flow [2024-06-21 22:13:29,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 200 transitions, 1609 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-21 22:13:29,502 INFO L231 Difference]: Finished difference. Result has 102 places, 137 transitions, 1161 flow [2024-06-21 22:13:29,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1161, PETRI_PLACES=102, PETRI_TRANSITIONS=137} [2024-06-21 22:13:29,503 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 45 predicate places. [2024-06-21 22:13:29,503 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 137 transitions, 1161 flow [2024-06-21 22:13:29,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:29,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:13:29,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:13:29,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 22:13:29,504 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)] === [2024-06-21 22:13:29,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:13:29,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1777534940, now seen corresponding path program 2 times [2024-06-21 22:13:29,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:13:29,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414007178] [2024-06-21 22:13:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:13:29,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:13:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:13:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:13:33,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:13:33,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414007178] [2024-06-21 22:13:33,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414007178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:13:33,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:13:33,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:13:33,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619422203] [2024-06-21 22:13:33,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:13:33,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:13:33,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:13:33,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:13:33,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:13:33,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:13:33,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 137 transitions, 1161 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:33,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:13:33,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:13:33,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:13:35,856 INFO L124 PetriNetUnfolderBase]: 7218/10226 cut-off events. [2024-06-21 22:13:35,856 INFO L125 PetriNetUnfolderBase]: For 69015/69090 co-relation queries the response was YES. [2024-06-21 22:13:35,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45234 conditions, 10226 events. 7218/10226 cut-off events. For 69015/69090 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 55534 event pairs, 3023 based on Foata normal form. 41/10259 useless extension candidates. Maximal degree in co-relation 45194. Up to 9679 conditions per place. [2024-06-21 22:13:35,917 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 152 selfloop transitions, 43 changer transitions 0/203 dead transitions. [2024-06-21 22:13:35,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 203 transitions, 1861 flow [2024-06-21 22:13:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 22:13:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 22:13:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-21 22:13:35,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 22:13:35,919 INFO L175 Difference]: Start difference. First operand has 102 places, 137 transitions, 1161 flow. Second operand 8 states and 216 transitions. [2024-06-21 22:13:35,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 203 transitions, 1861 flow [2024-06-21 22:13:35,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 203 transitions, 1776 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-21 22:13:35,978 INFO L231 Difference]: Finished difference. Result has 108 places, 146 transitions, 1295 flow [2024-06-21 22:13:35,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1295, PETRI_PLACES=108, PETRI_TRANSITIONS=146} [2024-06-21 22:13:35,979 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 51 predicate places. [2024-06-21 22:13:35,979 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 146 transitions, 1295 flow [2024-06-21 22:13:35,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:35,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:13:35,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:13:35,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 22:13:35,980 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)] === [2024-06-21 22:13:35,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:13:35,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1777540520, now seen corresponding path program 3 times [2024-06-21 22:13:35,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:13:35,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202628636] [2024-06-21 22:13:35,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:13:35,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:13:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:13:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:13:40,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:13:40,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202628636] [2024-06-21 22:13:40,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202628636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:13:40,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:13:40,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:13:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920971190] [2024-06-21 22:13:40,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:13:40,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:13:40,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:13:40,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:13:40,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:13:40,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:13:40,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 146 transitions, 1295 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:40,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:13:40,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:13:40,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:13:43,060 INFO L124 PetriNetUnfolderBase]: 7209/10214 cut-off events. [2024-06-21 22:13:43,061 INFO L125 PetriNetUnfolderBase]: For 77002/77077 co-relation queries the response was YES. [2024-06-21 22:13:43,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46112 conditions, 10214 events. 7209/10214 cut-off events. For 77002/77077 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 55292 event pairs, 3023 based on Foata normal form. 41/10247 useless extension candidates. Maximal degree in co-relation 46069. Up to 9670 conditions per place. [2024-06-21 22:13:43,115 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 166 selfloop transitions, 45 changer transitions 0/219 dead transitions. [2024-06-21 22:13:43,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 219 transitions, 1906 flow [2024-06-21 22:13:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 22:13:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 22:13:43,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 261 transitions. [2024-06-21 22:13:43,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-21 22:13:43,117 INFO L175 Difference]: Start difference. First operand has 108 places, 146 transitions, 1295 flow. Second operand 10 states and 261 transitions. [2024-06-21 22:13:43,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 219 transitions, 1906 flow [2024-06-21 22:13:43,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 219 transitions, 1827 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 22:13:43,180 INFO L231 Difference]: Finished difference. Result has 114 places, 147 transitions, 1327 flow [2024-06-21 22:13:43,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1327, PETRI_PLACES=114, PETRI_TRANSITIONS=147} [2024-06-21 22:13:43,180 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 57 predicate places. [2024-06-21 22:13:43,181 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 147 transitions, 1327 flow [2024-06-21 22:13:43,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:43,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:13:43,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:13:43,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 22:13:43,181 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)] === [2024-06-21 22:13:43,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:13:43,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2004166078, now seen corresponding path program 4 times [2024-06-21 22:13:43,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:13:43,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654821284] [2024-06-21 22:13:43,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:13:43,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:13:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:13:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:13:46,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:13:46,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654821284] [2024-06-21 22:13:46,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654821284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:13:46,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:13:46,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:13:46,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834323376] [2024-06-21 22:13:46,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:13:46,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:13:46,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:13:46,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:13:46,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:13:46,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:13:46,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 147 transitions, 1327 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:46,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:13:46,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:13:46,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:13:49,694 INFO L124 PetriNetUnfolderBase]: 7236/10261 cut-off events. [2024-06-21 22:13:49,694 INFO L125 PetriNetUnfolderBase]: For 85756/85832 co-relation queries the response was YES. [2024-06-21 22:13:49,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47263 conditions, 10261 events. 7236/10261 cut-off events. For 85756/85832 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 55785 event pairs, 3023 based on Foata normal form. 41/10294 useless extension candidates. Maximal degree in co-relation 47218. Up to 9610 conditions per place. [2024-06-21 22:13:49,762 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 139 selfloop transitions, 57 changer transitions 0/204 dead transitions. [2024-06-21 22:13:49,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 204 transitions, 1983 flow [2024-06-21 22:13:49,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 22:13:49,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 22:13:49,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-21 22:13:49,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-06-21 22:13:49,763 INFO L175 Difference]: Start difference. First operand has 114 places, 147 transitions, 1327 flow. Second operand 7 states and 195 transitions. [2024-06-21 22:13:49,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 204 transitions, 1983 flow [2024-06-21 22:13:49,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 204 transitions, 1889 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 22:13:49,832 INFO L231 Difference]: Finished difference. Result has 114 places, 152 transitions, 1446 flow [2024-06-21 22:13:49,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1446, PETRI_PLACES=114, PETRI_TRANSITIONS=152} [2024-06-21 22:13:49,832 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 57 predicate places. [2024-06-21 22:13:49,833 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 152 transitions, 1446 flow [2024-06-21 22:13:49,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:49,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:13:49,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:13:49,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 22:13:49,833 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)] === [2024-06-21 22:13:49,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:13:49,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2004171658, now seen corresponding path program 5 times [2024-06-21 22:13:49,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:13:49,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955257516] [2024-06-21 22:13:49,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:13:49,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:13:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:13:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:13:53,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:13:53,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955257516] [2024-06-21 22:13:53,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955257516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:13:53,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:13:53,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:13:53,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668657096] [2024-06-21 22:13:53,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:13:53,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:13:53,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:13:53,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:13:53,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:13:53,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:13:53,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 152 transitions, 1446 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:53,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:13:53,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:13:53,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:13:56,689 INFO L124 PetriNetUnfolderBase]: 7263/10308 cut-off events. [2024-06-21 22:13:56,689 INFO L125 PetriNetUnfolderBase]: For 96060/96136 co-relation queries the response was YES. [2024-06-21 22:13:56,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48574 conditions, 10308 events. 7263/10308 cut-off events. For 96060/96136 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 55928 event pairs, 3023 based on Foata normal form. 41/10341 useless extension candidates. Maximal degree in co-relation 48527. Up to 9638 conditions per place. [2024-06-21 22:13:56,762 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 155 selfloop transitions, 63 changer transitions 0/226 dead transitions. [2024-06-21 22:13:56,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 226 transitions, 2201 flow [2024-06-21 22:13:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 22:13:56,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 22:13:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 245 transitions. [2024-06-21 22:13:56,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041152263374485 [2024-06-21 22:13:56,764 INFO L175 Difference]: Start difference. First operand has 114 places, 152 transitions, 1446 flow. Second operand 9 states and 245 transitions. [2024-06-21 22:13:56,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 226 transitions, 2201 flow [2024-06-21 22:13:56,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 226 transitions, 2044 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 22:13:56,881 INFO L231 Difference]: Finished difference. Result has 117 places, 156 transitions, 1499 flow [2024-06-21 22:13:56,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1499, PETRI_PLACES=117, PETRI_TRANSITIONS=156} [2024-06-21 22:13:56,881 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 60 predicate places. [2024-06-21 22:13:56,882 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 156 transitions, 1499 flow [2024-06-21 22:13:56,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:13:56,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:13:56,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:13:56,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 22:13:56,882 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)] === [2024-06-21 22:13:56,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:13:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2011523308, now seen corresponding path program 6 times [2024-06-21 22:13:56,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:13:56,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227742589] [2024-06-21 22:13:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:13:56,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:13:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:14:00,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:14:00,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:14:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227742589] [2024-06-21 22:14:00,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227742589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:14:00,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:14:00,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:14:00,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27135169] [2024-06-21 22:14:00,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:14:00,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:14:00,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:14:00,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:14:00,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:14:00,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:14:00,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 156 transitions, 1499 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:00,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:14:00,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:14:00,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:14:03,251 INFO L124 PetriNetUnfolderBase]: 7254/10309 cut-off events. [2024-06-21 22:14:03,251 INFO L125 PetriNetUnfolderBase]: For 97477/98123 co-relation queries the response was YES. [2024-06-21 22:14:03,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48476 conditions, 10309 events. 7254/10309 cut-off events. For 97477/98123 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 56144 event pairs, 3055 based on Foata normal form. 155/10447 useless extension candidates. Maximal degree in co-relation 48429. Up to 9629 conditions per place. [2024-06-21 22:14:03,313 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 149 selfloop transitions, 63 changer transitions 0/220 dead transitions. [2024-06-21 22:14:03,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 220 transitions, 2092 flow [2024-06-21 22:14:03,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 22:14:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 22:14:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-21 22:14:03,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48559670781893005 [2024-06-21 22:14:03,315 INFO L175 Difference]: Start difference. First operand has 117 places, 156 transitions, 1499 flow. Second operand 9 states and 236 transitions. [2024-06-21 22:14:03,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 220 transitions, 2092 flow [2024-06-21 22:14:03,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 220 transitions, 1915 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 22:14:03,405 INFO L231 Difference]: Finished difference. Result has 118 places, 157 transitions, 1471 flow [2024-06-21 22:14:03,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1471, PETRI_PLACES=118, PETRI_TRANSITIONS=157} [2024-06-21 22:14:03,405 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 61 predicate places. [2024-06-21 22:14:03,405 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 157 transitions, 1471 flow [2024-06-21 22:14:03,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:03,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:14:03,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:14:03,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 22:14:03,406 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)] === [2024-06-21 22:14:03,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:14:03,406 INFO L85 PathProgramCache]: Analyzing trace with hash -755944775, now seen corresponding path program 1 times [2024-06-21 22:14:03,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:14:03,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67423846] [2024-06-21 22:14:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:14:03,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:14:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:14:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:14:06,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:14:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67423846] [2024-06-21 22:14:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67423846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:14:06,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:14:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:14:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082983815] [2024-06-21 22:14:06,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:14:06,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:14:06,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:14:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:14:06,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:14:06,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-21 22:14:06,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 157 transitions, 1471 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:06,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:14:06,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-21 22:14:06,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:14:08,850 INFO L124 PetriNetUnfolderBase]: 7720/11043 cut-off events. [2024-06-21 22:14:08,850 INFO L125 PetriNetUnfolderBase]: For 114241/114595 co-relation queries the response was YES. [2024-06-21 22:14:08,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54091 conditions, 11043 events. 7720/11043 cut-off events. For 114241/114595 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 62455 event pairs, 2806 based on Foata normal form. 84/10778 useless extension candidates. Maximal degree in co-relation 54044. Up to 9711 conditions per place. [2024-06-21 22:14:08,926 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 154 selfloop transitions, 136 changer transitions 0/316 dead transitions. [2024-06-21 22:14:08,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 316 transitions, 3265 flow [2024-06-21 22:14:08,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 22:14:08,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 22:14:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 256 transitions. [2024-06-21 22:14:08,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267489711934157 [2024-06-21 22:14:08,928 INFO L175 Difference]: Start difference. First operand has 118 places, 157 transitions, 1471 flow. Second operand 9 states and 256 transitions. [2024-06-21 22:14:08,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 316 transitions, 3265 flow [2024-06-21 22:14:09,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 316 transitions, 3071 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 22:14:09,043 INFO L231 Difference]: Finished difference. Result has 123 places, 240 transitions, 2583 flow [2024-06-21 22:14:09,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2583, PETRI_PLACES=123, PETRI_TRANSITIONS=240} [2024-06-21 22:14:09,044 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 66 predicate places. [2024-06-21 22:14:09,044 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 240 transitions, 2583 flow [2024-06-21 22:14:09,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:09,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:14:09,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:14:09,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 22:14:09,045 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)] === [2024-06-21 22:14:09,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:14:09,045 INFO L85 PathProgramCache]: Analyzing trace with hash -292572347, now seen corresponding path program 2 times [2024-06-21 22:14:09,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:14:09,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974873110] [2024-06-21 22:14:09,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:14:09,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:14:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:14:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:14:12,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:14:12,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974873110] [2024-06-21 22:14:12,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974873110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:14:12,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:14:12,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:14:12,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406799125] [2024-06-21 22:14:12,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:14:12,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:14:12,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:14:12,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:14:12,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:14:12,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-21 22:14:12,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 240 transitions, 2583 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:12,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:14:12,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-21 22:14:12,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:14:15,458 INFO L124 PetriNetUnfolderBase]: 7736/11075 cut-off events. [2024-06-21 22:14:15,458 INFO L125 PetriNetUnfolderBase]: For 134303/134801 co-relation queries the response was YES. [2024-06-21 22:14:15,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57455 conditions, 11075 events. 7736/11075 cut-off events. For 134303/134801 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 62552 event pairs, 2198 based on Foata normal form. 150/10872 useless extension candidates. Maximal degree in co-relation 57404. Up to 9469 conditions per place. [2024-06-21 22:14:15,541 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 135 selfloop transitions, 148 changer transitions 0/309 dead transitions. [2024-06-21 22:14:15,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 309 transitions, 3517 flow [2024-06-21 22:14:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 22:14:15,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 22:14:15,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-06-21 22:14:15,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-21 22:14:15,543 INFO L175 Difference]: Start difference. First operand has 123 places, 240 transitions, 2583 flow. Second operand 8 states and 225 transitions. [2024-06-21 22:14:15,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 309 transitions, 3517 flow [2024-06-21 22:14:15,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 309 transitions, 3468 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-21 22:14:15,722 INFO L231 Difference]: Finished difference. Result has 129 places, 246 transitions, 2942 flow [2024-06-21 22:14:15,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2942, PETRI_PLACES=129, PETRI_TRANSITIONS=246} [2024-06-21 22:14:15,722 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 72 predicate places. [2024-06-21 22:14:15,722 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 246 transitions, 2942 flow [2024-06-21 22:14:15,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:15,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:14:15,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:14:15,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 22:14:15,723 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)] === [2024-06-21 22:14:15,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:14:15,723 INFO L85 PathProgramCache]: Analyzing trace with hash -292511897, now seen corresponding path program 3 times [2024-06-21 22:14:15,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:14:15,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83119962] [2024-06-21 22:14:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:14:15,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:14:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:14:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:14:19,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:14:19,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83119962] [2024-06-21 22:14:19,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83119962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:14:19,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:14:19,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:14:19,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543035165] [2024-06-21 22:14:19,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:14:19,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:14:19,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:14:19,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:14:19,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:14:19,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-21 22:14:19,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 246 transitions, 2942 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:19,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:14:19,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-21 22:14:19,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:14:22,781 INFO L124 PetriNetUnfolderBase]: 7812/11192 cut-off events. [2024-06-21 22:14:22,782 INFO L125 PetriNetUnfolderBase]: For 160395/160945 co-relation queries the response was YES. [2024-06-21 22:14:22,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61158 conditions, 11192 events. 7812/11192 cut-off events. For 160395/160945 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 63377 event pairs, 2636 based on Foata normal form. 131/10954 useless extension candidates. Maximal degree in co-relation 61105. Up to 9935 conditions per place. [2024-06-21 22:14:22,869 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 149 selfloop transitions, 138 changer transitions 0/313 dead transitions. [2024-06-21 22:14:22,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 313 transitions, 3807 flow [2024-06-21 22:14:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 22:14:22,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 22:14:22,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-21 22:14:22,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-21 22:14:22,871 INFO L175 Difference]: Start difference. First operand has 129 places, 246 transitions, 2942 flow. Second operand 8 states and 221 transitions. [2024-06-21 22:14:22,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 313 transitions, 3807 flow [2024-06-21 22:14:23,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 313 transitions, 3604 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-21 22:14:23,081 INFO L231 Difference]: Finished difference. Result has 132 places, 252 transitions, 3146 flow [2024-06-21 22:14:23,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3146, PETRI_PLACES=132, PETRI_TRANSITIONS=252} [2024-06-21 22:14:23,081 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 75 predicate places. [2024-06-21 22:14:23,081 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 252 transitions, 3146 flow [2024-06-21 22:14:23,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:23,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:14:23,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:14:23,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 22:14:23,082 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)] === [2024-06-21 22:14:23,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:14:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash -730994179, now seen corresponding path program 4 times [2024-06-21 22:14:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:14:23,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654476528] [2024-06-21 22:14:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:14:23,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:14:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:14:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:14:26,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:14:26,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654476528] [2024-06-21 22:14:26,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654476528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:14:26,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:14:26,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:14:26,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219219269] [2024-06-21 22:14:26,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:14:26,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:14:26,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:14:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:14:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:14:26,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-21 22:14:26,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 252 transitions, 3146 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:26,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:14:26,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-21 22:14:26,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:14:29,834 INFO L124 PetriNetUnfolderBase]: 7925/11357 cut-off events. [2024-06-21 22:14:29,834 INFO L125 PetriNetUnfolderBase]: For 155166/155669 co-relation queries the response was YES. [2024-06-21 22:14:29,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61519 conditions, 11357 events. 7925/11357 cut-off events. For 155166/155669 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 64695 event pairs, 2632 based on Foata normal form. 122/11105 useless extension candidates. Maximal degree in co-relation 61465. Up to 10305 conditions per place. [2024-06-21 22:14:29,911 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 211 selfloop transitions, 81 changer transitions 0/318 dead transitions. [2024-06-21 22:14:29,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 318 transitions, 4031 flow [2024-06-21 22:14:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 22:14:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 22:14:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-21 22:14:29,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 22:14:29,913 INFO L175 Difference]: Start difference. First operand has 132 places, 252 transitions, 3146 flow. Second operand 8 states and 216 transitions. [2024-06-21 22:14:29,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 318 transitions, 4031 flow [2024-06-21 22:14:30,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 318 transitions, 3723 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 22:14:30,108 INFO L231 Difference]: Finished difference. Result has 134 places, 258 transitions, 3137 flow [2024-06-21 22:14:30,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3137, PETRI_PLACES=134, PETRI_TRANSITIONS=258} [2024-06-21 22:14:30,108 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 77 predicate places. [2024-06-21 22:14:30,108 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 258 transitions, 3137 flow [2024-06-21 22:14:30,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:30,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:14:30,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:14:30,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 22:14:30,109 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)] === [2024-06-21 22:14:30,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:14:30,109 INFO L85 PathProgramCache]: Analyzing trace with hash -730809481, now seen corresponding path program 1 times [2024-06-21 22:14:30,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:14:30,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901880080] [2024-06-21 22:14:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:14:30,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:14:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:14:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:14:33,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:14:33,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901880080] [2024-06-21 22:14:33,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901880080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:14:33,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:14:33,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:14:33,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193552000] [2024-06-21 22:14:33,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:14:33,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:14:33,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:14:33,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:14:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:14:34,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:14:34,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 258 transitions, 3137 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:34,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:14:34,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:14:34,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:14:37,161 INFO L124 PetriNetUnfolderBase]: 8495/12103 cut-off events. [2024-06-21 22:14:37,162 INFO L125 PetriNetUnfolderBase]: For 152918/153213 co-relation queries the response was YES. [2024-06-21 22:14:37,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63977 conditions, 12103 events. 8495/12103 cut-off events. For 152918/153213 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 67093 event pairs, 2913 based on Foata normal form. 93/12173 useless extension candidates. Maximal degree in co-relation 63922. Up to 11435 conditions per place. [2024-06-21 22:14:37,280 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 278 selfloop transitions, 45 changer transitions 0/331 dead transitions. [2024-06-21 22:14:37,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 331 transitions, 4216 flow [2024-06-21 22:14:37,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 22:14:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 22:14:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-21 22:14:37,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-21 22:14:37,282 INFO L175 Difference]: Start difference. First operand has 134 places, 258 transitions, 3137 flow. Second operand 9 states and 222 transitions. [2024-06-21 22:14:37,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 331 transitions, 4216 flow [2024-06-21 22:14:37,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 331 transitions, 3994 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-21 22:14:37,550 INFO L231 Difference]: Finished difference. Result has 141 places, 276 transitions, 3349 flow [2024-06-21 22:14:37,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2931, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3349, PETRI_PLACES=141, PETRI_TRANSITIONS=276} [2024-06-21 22:14:37,551 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 84 predicate places. [2024-06-21 22:14:37,551 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 276 transitions, 3349 flow [2024-06-21 22:14:37,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:37,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:14:37,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:14:37,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 22:14:37,551 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)] === [2024-06-21 22:14:37,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:14:37,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1999603803, now seen corresponding path program 5 times [2024-06-21 22:14:37,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:14:37,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381455985] [2024-06-21 22:14:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:14:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:14:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:14:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:14:41,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:14:41,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381455985] [2024-06-21 22:14:41,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381455985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:14:41,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:14:41,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:14:41,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031740290] [2024-06-21 22:14:41,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:14:41,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:14:41,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:14:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:14:41,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:14:41,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-06-21 22:14:41,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 276 transitions, 3349 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:41,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:14:41,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-06-21 22:14:41,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:14:44,717 INFO L124 PetriNetUnfolderBase]: 7990/11473 cut-off events. [2024-06-21 22:14:44,718 INFO L125 PetriNetUnfolderBase]: For 184330/185020 co-relation queries the response was YES. [2024-06-21 22:14:44,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63771 conditions, 11473 events. 7990/11473 cut-off events. For 184330/185020 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 65339 event pairs, 2140 based on Foata normal form. 204/11296 useless extension candidates. Maximal degree in co-relation 63711. Up to 9974 conditions per place. [2024-06-21 22:14:44,818 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 161 selfloop transitions, 136 changer transitions 0/327 dead transitions. [2024-06-21 22:14:44,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 327 transitions, 4103 flow [2024-06-21 22:14:44,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 22:14:44,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 22:14:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-06-21 22:14:44,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-21 22:14:44,820 INFO L175 Difference]: Start difference. First operand has 141 places, 276 transitions, 3349 flow. Second operand 7 states and 196 transitions. [2024-06-21 22:14:44,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 327 transitions, 4103 flow [2024-06-21 22:14:45,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 327 transitions, 3997 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-21 22:14:45,103 INFO L231 Difference]: Finished difference. Result has 146 places, 276 transitions, 3557 flow [2024-06-21 22:14:45,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3557, PETRI_PLACES=146, PETRI_TRANSITIONS=276} [2024-06-21 22:14:45,104 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 89 predicate places. [2024-06-21 22:14:45,104 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 276 transitions, 3557 flow [2024-06-21 22:14:45,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:45,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:14:45,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:14:45,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 22:14:45,104 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)] === [2024-06-21 22:14:45,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:14:45,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1999788501, now seen corresponding path program 2 times [2024-06-21 22:14:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:14:45,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276783964] [2024-06-21 22:14:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:14:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:14:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:14:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:14:48,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:14:48,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276783964] [2024-06-21 22:14:48,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276783964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:14:48,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:14:48,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:14:48,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344640394] [2024-06-21 22:14:48,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:14:48,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:14:48,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:14:48,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:14:48,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:14:48,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:14:48,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 276 transitions, 3557 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:48,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:14:48,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:14:48,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:14:51,693 INFO L124 PetriNetUnfolderBase]: 8488/12105 cut-off events. [2024-06-21 22:14:51,693 INFO L125 PetriNetUnfolderBase]: For 180952/181333 co-relation queries the response was YES. [2024-06-21 22:14:51,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66642 conditions, 12105 events. 8488/12105 cut-off events. For 180952/181333 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 67162 event pairs, 2882 based on Foata normal form. 109/12189 useless extension candidates. Maximal degree in co-relation 66580. Up to 11329 conditions per place. [2024-06-21 22:14:51,778 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 258 selfloop transitions, 60 changer transitions 0/326 dead transitions. [2024-06-21 22:14:51,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 326 transitions, 4380 flow [2024-06-21 22:14:51,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 22:14:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 22:14:51,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-21 22:14:51,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-21 22:14:51,780 INFO L175 Difference]: Start difference. First operand has 146 places, 276 transitions, 3557 flow. Second operand 7 states and 186 transitions. [2024-06-21 22:14:51,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 326 transitions, 4380 flow [2024-06-21 22:14:52,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 326 transitions, 4078 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 22:14:52,029 INFO L231 Difference]: Finished difference. Result has 147 places, 279 transitions, 3438 flow [2024-06-21 22:14:52,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3255, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3438, PETRI_PLACES=147, PETRI_TRANSITIONS=279} [2024-06-21 22:14:52,029 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 90 predicate places. [2024-06-21 22:14:52,029 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 279 transitions, 3438 flow [2024-06-21 22:14:52,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:52,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:14:52,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:14:52,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 22:14:52,030 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)] === [2024-06-21 22:14:52,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:14:52,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2067277645, now seen corresponding path program 3 times [2024-06-21 22:14:52,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:14:52,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301864423] [2024-06-21 22:14:52,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:14:52,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:14:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:14:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:14:55,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:14:55,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301864423] [2024-06-21 22:14:55,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301864423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:14:55,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:14:55,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:14:55,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717182847] [2024-06-21 22:14:55,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:14:55,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:14:55,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:14:55,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:14:55,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:14:55,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:14:55,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 279 transitions, 3438 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:55,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:14:55,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:14:55,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:14:58,258 INFO L124 PetriNetUnfolderBase]: 8532/12176 cut-off events. [2024-06-21 22:14:58,258 INFO L125 PetriNetUnfolderBase]: For 184603/185506 co-relation queries the response was YES. [2024-06-21 22:14:58,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67610 conditions, 12176 events. 8532/12176 cut-off events. For 184603/185506 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 67570 event pairs, 2925 based on Foata normal form. 181/12318 useless extension candidates. Maximal degree in co-relation 67547. Up to 11441 conditions per place. [2024-06-21 22:14:58,367 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 263 selfloop transitions, 55 changer transitions 0/326 dead transitions. [2024-06-21 22:14:58,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 326 transitions, 4259 flow [2024-06-21 22:14:58,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 22:14:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 22:14:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-21 22:14:58,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2024-06-21 22:14:58,369 INFO L175 Difference]: Start difference. First operand has 147 places, 279 transitions, 3438 flow. Second operand 7 states and 181 transitions. [2024-06-21 22:14:58,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 326 transitions, 4259 flow [2024-06-21 22:14:58,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 326 transitions, 4100 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-21 22:14:58,608 INFO L231 Difference]: Finished difference. Result has 149 places, 282 transitions, 3453 flow [2024-06-21 22:14:58,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3453, PETRI_PLACES=149, PETRI_TRANSITIONS=282} [2024-06-21 22:14:58,608 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 92 predicate places. [2024-06-21 22:14:58,608 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 282 transitions, 3453 flow [2024-06-21 22:14:58,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:14:58,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:14:58,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:14:58,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 22:14:58,609 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 22:14:58,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:14:58,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2058706765, now seen corresponding path program 4 times [2024-06-21 22:14:58,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:14:58,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343462076] [2024-06-21 22:14:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:14:58,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:14:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:15:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:15:01,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:15:01,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343462076] [2024-06-21 22:15:01,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343462076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:15:01,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:15:01,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 22:15:01,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122772385] [2024-06-21 22:15:01,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:15:01,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 22:15:01,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:15:01,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 22:15:01,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 22:15:02,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:15:02,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 282 transitions, 3453 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:02,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:15:02,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:15:02,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:15:04,842 INFO L124 PetriNetUnfolderBase]: 8517/12155 cut-off events. [2024-06-21 22:15:04,842 INFO L125 PetriNetUnfolderBase]: For 182956/183861 co-relation queries the response was YES. [2024-06-21 22:15:04,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67251 conditions, 12155 events. 8517/12155 cut-off events. For 182956/183861 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 67500 event pairs, 2728 based on Foata normal form. 181/12297 useless extension candidates. Maximal degree in co-relation 67187. Up to 11248 conditions per place. [2024-06-21 22:15:04,964 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 256 selfloop transitions, 66 changer transitions 0/330 dead transitions. [2024-06-21 22:15:04,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 330 transitions, 4284 flow [2024-06-21 22:15:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 22:15:04,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 22:15:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-21 22:15:04,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-21 22:15:04,966 INFO L175 Difference]: Start difference. First operand has 149 places, 282 transitions, 3453 flow. Second operand 7 states and 182 transitions. [2024-06-21 22:15:04,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 330 transitions, 4284 flow [2024-06-21 22:15:05,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 330 transitions, 4142 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-21 22:15:05,322 INFO L231 Difference]: Finished difference. Result has 151 places, 285 transitions, 3507 flow [2024-06-21 22:15:05,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3311, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3507, PETRI_PLACES=151, PETRI_TRANSITIONS=285} [2024-06-21 22:15:05,322 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 94 predicate places. [2024-06-21 22:15:05,323 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 285 transitions, 3507 flow [2024-06-21 22:15:05,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:05,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:15:05,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:15:05,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 22:15:05,323 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 22:15:05,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:15:05,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1221719051, now seen corresponding path program 1 times [2024-06-21 22:15:05,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:15:05,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815265126] [2024-06-21 22:15:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:15:05,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:15:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:15:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:15:07,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:15:07,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815265126] [2024-06-21 22:15:07,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815265126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:15:07,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:15:07,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 22:15:07,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724513844] [2024-06-21 22:15:07,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:15:07,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 22:15:07,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:15:07,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 22:15:07,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 22:15:07,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:15:07,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 285 transitions, 3507 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:07,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:15:07,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:15:07,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:15:10,352 INFO L124 PetriNetUnfolderBase]: 9468/13448 cut-off events. [2024-06-21 22:15:10,352 INFO L125 PetriNetUnfolderBase]: For 234598/235066 co-relation queries the response was YES. [2024-06-21 22:15:10,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76250 conditions, 13448 events. 9468/13448 cut-off events. For 234598/235066 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 75476 event pairs, 3632 based on Foata normal form. 410/13813 useless extension candidates. Maximal degree in co-relation 76185. Up to 12780 conditions per place. [2024-06-21 22:15:10,496 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 284 selfloop transitions, 16 changer transitions 0/316 dead transitions. [2024-06-21 22:15:10,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 316 transitions, 4298 flow [2024-06-21 22:15:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 22:15:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 22:15:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-21 22:15:10,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-21 22:15:10,497 INFO L175 Difference]: Start difference. First operand has 151 places, 285 transitions, 3507 flow. Second operand 5 states and 124 transitions. [2024-06-21 22:15:10,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 316 transitions, 4298 flow [2024-06-21 22:15:10,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 316 transitions, 4157 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-21 22:15:10,860 INFO L231 Difference]: Finished difference. Result has 153 places, 298 transitions, 3576 flow [2024-06-21 22:15:10,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3368, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3576, PETRI_PLACES=153, PETRI_TRANSITIONS=298} [2024-06-21 22:15:10,861 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 96 predicate places. [2024-06-21 22:15:10,861 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 298 transitions, 3576 flow [2024-06-21 22:15:10,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:10,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:15:10,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:15:10,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 22:15:10,862 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)] === [2024-06-21 22:15:10,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:15:10,862 INFO L85 PathProgramCache]: Analyzing trace with hash -394901357, now seen corresponding path program 1 times [2024-06-21 22:15:10,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:15:10,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558317586] [2024-06-21 22:15:10,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:15:10,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:15:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:15:15,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:15:15,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:15:15,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558317586] [2024-06-21 22:15:15,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558317586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:15:15,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:15:15,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 22:15:15,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935250782] [2024-06-21 22:15:15,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:15:15,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 22:15:15,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:15:15,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 22:15:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 22:15:15,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:15:15,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 298 transitions, 3576 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:15,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:15:15,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:15:15,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:15:18,758 INFO L124 PetriNetUnfolderBase]: 10301/14750 cut-off events. [2024-06-21 22:15:18,759 INFO L125 PetriNetUnfolderBase]: For 274249/274985 co-relation queries the response was YES. [2024-06-21 22:15:18,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88278 conditions, 14750 events. 10301/14750 cut-off events. For 274249/274985 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 85001 event pairs, 2773 based on Foata normal form. 255/14957 useless extension candidates. Maximal degree in co-relation 88210. Up to 12379 conditions per place. [2024-06-21 22:15:18,895 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 277 selfloop transitions, 144 changer transitions 0/431 dead transitions. [2024-06-21 22:15:18,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 431 transitions, 5456 flow [2024-06-21 22:15:18,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 22:15:18,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 22:15:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-06-21 22:15:18,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-21 22:15:18,897 INFO L175 Difference]: Start difference. First operand has 153 places, 298 transitions, 3576 flow. Second operand 10 states and 265 transitions. [2024-06-21 22:15:18,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 431 transitions, 5456 flow [2024-06-21 22:15:19,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 431 transitions, 5440 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-21 22:15:19,293 INFO L231 Difference]: Finished difference. Result has 164 places, 343 transitions, 4493 flow [2024-06-21 22:15:19,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3560, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4493, PETRI_PLACES=164, PETRI_TRANSITIONS=343} [2024-06-21 22:15:19,294 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 107 predicate places. [2024-06-21 22:15:19,294 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 343 transitions, 4493 flow [2024-06-21 22:15:19,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:19,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:15:19,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:15:19,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 22:15:19,295 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)] === [2024-06-21 22:15:19,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:15:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -391092077, now seen corresponding path program 2 times [2024-06-21 22:15:19,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:15:19,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804757267] [2024-06-21 22:15:19,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:15:19,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:15:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:15:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:15:23,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:15:23,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804757267] [2024-06-21 22:15:23,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804757267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:15:23,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:15:23,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 22:15:23,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794936927] [2024-06-21 22:15:23,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:15:23,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 22:15:23,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:15:23,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 22:15:23,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 22:15:23,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:15:23,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 343 transitions, 4493 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:23,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:15:23,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:15:23,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:15:28,156 INFO L124 PetriNetUnfolderBase]: 10613/15262 cut-off events. [2024-06-21 22:15:28,156 INFO L125 PetriNetUnfolderBase]: For 315178/315979 co-relation queries the response was YES. [2024-06-21 22:15:28,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94454 conditions, 15262 events. 10613/15262 cut-off events. For 315178/315979 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 88847 event pairs, 3113 based on Foata normal form. 292/15509 useless extension candidates. Maximal degree in co-relation 94381. Up to 13509 conditions per place. [2024-06-21 22:15:28,313 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 275 selfloop transitions, 136 changer transitions 0/421 dead transitions. [2024-06-21 22:15:28,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 421 transitions, 5652 flow [2024-06-21 22:15:28,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 22:15:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 22:15:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-21 22:15:28,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2024-06-21 22:15:28,315 INFO L175 Difference]: Start difference. First operand has 164 places, 343 transitions, 4493 flow. Second operand 9 states and 244 transitions. [2024-06-21 22:15:28,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 421 transitions, 5652 flow [2024-06-21 22:15:28,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 421 transitions, 5567 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-21 22:15:28,882 INFO L231 Difference]: Finished difference. Result has 171 places, 347 transitions, 4796 flow [2024-06-21 22:15:28,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4408, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4796, PETRI_PLACES=171, PETRI_TRANSITIONS=347} [2024-06-21 22:15:28,882 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 114 predicate places. [2024-06-21 22:15:28,882 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 347 transitions, 4796 flow [2024-06-21 22:15:28,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:28,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:15:28,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:15:28,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 22:15:28,883 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)] === [2024-06-21 22:15:28,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:15:28,883 INFO L85 PathProgramCache]: Analyzing trace with hash -465039585, now seen corresponding path program 3 times [2024-06-21 22:15:28,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:15:28,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106219765] [2024-06-21 22:15:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:15:28,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:15:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:15:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:15:33,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:15:33,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106219765] [2024-06-21 22:15:33,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106219765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:15:33,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:15:33,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 22:15:33,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100804616] [2024-06-21 22:15:33,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:15:33,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 22:15:33,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:15:33,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 22:15:33,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 22:15:33,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:15:33,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 347 transitions, 4796 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:33,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:15:33,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:15:33,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:15:37,840 INFO L124 PetriNetUnfolderBase]: 10837/15622 cut-off events. [2024-06-21 22:15:37,840 INFO L125 PetriNetUnfolderBase]: For 349102/349934 co-relation queries the response was YES. [2024-06-21 22:15:37,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99166 conditions, 15622 events. 10837/15622 cut-off events. For 349102/349934 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 91648 event pairs, 3086 based on Foata normal form. 280/15859 useless extension candidates. Maximal degree in co-relation 99090. Up to 13377 conditions per place. [2024-06-21 22:15:37,983 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 279 selfloop transitions, 145 changer transitions 0/434 dead transitions. [2024-06-21 22:15:37,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 434 transitions, 6084 flow [2024-06-21 22:15:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 22:15:37,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 22:15:37,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-21 22:15:37,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5082304526748971 [2024-06-21 22:15:37,985 INFO L175 Difference]: Start difference. First operand has 171 places, 347 transitions, 4796 flow. Second operand 9 states and 247 transitions. [2024-06-21 22:15:37,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 434 transitions, 6084 flow [2024-06-21 22:15:38,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 434 transitions, 5772 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-21 22:15:38,528 INFO L231 Difference]: Finished difference. Result has 174 places, 357 transitions, 5008 flow [2024-06-21 22:15:38,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4484, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5008, PETRI_PLACES=174, PETRI_TRANSITIONS=357} [2024-06-21 22:15:38,528 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 117 predicate places. [2024-06-21 22:15:38,529 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 357 transitions, 5008 flow [2024-06-21 22:15:38,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:38,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:15:38,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:15:38,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 22:15:38,529 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)] === [2024-06-21 22:15:38,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:15:38,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1180470361, now seen corresponding path program 4 times [2024-06-21 22:15:38,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:15:38,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175875255] [2024-06-21 22:15:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:15:38,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:15:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:15:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:15:43,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:15:43,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175875255] [2024-06-21 22:15:43,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175875255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:15:43,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:15:43,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 22:15:43,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383658] [2024-06-21 22:15:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:15:43,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 22:15:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:15:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 22:15:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 22:15:43,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:15:43,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 357 transitions, 5008 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:43,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:15:43,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:15:43,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:15:47,560 INFO L124 PetriNetUnfolderBase]: 11149/16128 cut-off events. [2024-06-21 22:15:47,560 INFO L125 PetriNetUnfolderBase]: For 387855/388574 co-relation queries the response was YES. [2024-06-21 22:15:47,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103946 conditions, 16128 events. 11149/16128 cut-off events. For 387855/388574 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 95642 event pairs, 3398 based on Foata normal form. 227/16299 useless extension candidates. Maximal degree in co-relation 103868. Up to 14674 conditions per place. [2024-06-21 22:15:47,754 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 352 selfloop transitions, 89 changer transitions 0/451 dead transitions. [2024-06-21 22:15:47,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 451 transitions, 6293 flow [2024-06-21 22:15:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 22:15:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 22:15:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2024-06-21 22:15:47,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-21 22:15:47,756 INFO L175 Difference]: Start difference. First operand has 174 places, 357 transitions, 5008 flow. Second operand 11 states and 288 transitions. [2024-06-21 22:15:47,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 451 transitions, 6293 flow [2024-06-21 22:15:48,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 451 transitions, 6055 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-21 22:15:48,632 INFO L231 Difference]: Finished difference. Result has 180 places, 361 transitions, 5080 flow [2024-06-21 22:15:48,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4770, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5080, PETRI_PLACES=180, PETRI_TRANSITIONS=361} [2024-06-21 22:15:48,633 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 123 predicate places. [2024-06-21 22:15:48,633 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 361 transitions, 5080 flow [2024-06-21 22:15:48,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:48,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:15:48,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:15:48,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 22:15:48,633 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)] === [2024-06-21 22:15:48,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:15:48,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1610083279, now seen corresponding path program 5 times [2024-06-21 22:15:48,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:15:48,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843385715] [2024-06-21 22:15:48,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:15:48,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:15:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:15:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:15:53,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:15:53,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843385715] [2024-06-21 22:15:53,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843385715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:15:53,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:15:53,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 22:15:53,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817502608] [2024-06-21 22:15:53,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:15:53,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 22:15:53,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:15:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 22:15:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 22:15:53,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:15:53,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 361 transitions, 5080 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:53,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:15:53,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:15:53,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:15:57,806 INFO L124 PetriNetUnfolderBase]: 11461/16620 cut-off events. [2024-06-21 22:15:57,806 INFO L125 PetriNetUnfolderBase]: For 420126/420835 co-relation queries the response was YES. [2024-06-21 22:15:57,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108656 conditions, 16620 events. 11461/16620 cut-off events. For 420126/420835 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 99365 event pairs, 3448 based on Foata normal form. 227/16791 useless extension candidates. Maximal degree in co-relation 108576. Up to 15146 conditions per place. [2024-06-21 22:15:57,952 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 341 selfloop transitions, 86 changer transitions 0/437 dead transitions. [2024-06-21 22:15:57,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 437 transitions, 6293 flow [2024-06-21 22:15:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 22:15:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 22:15:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 240 transitions. [2024-06-21 22:15:57,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-21 22:15:57,954 INFO L175 Difference]: Start difference. First operand has 180 places, 361 transitions, 5080 flow. Second operand 9 states and 240 transitions. [2024-06-21 22:15:57,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 437 transitions, 6293 flow [2024-06-21 22:15:58,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 437 transitions, 6055 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-21 22:15:58,758 INFO L231 Difference]: Finished difference. Result has 180 places, 365 transitions, 5154 flow [2024-06-21 22:15:58,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4842, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5154, PETRI_PLACES=180, PETRI_TRANSITIONS=365} [2024-06-21 22:15:58,758 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 123 predicate places. [2024-06-21 22:15:58,758 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 365 transitions, 5154 flow [2024-06-21 22:15:58,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:15:58,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:15:58,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:15:58,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 22:15:58,759 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)] === [2024-06-21 22:15:58,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:15:58,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1112180973, now seen corresponding path program 6 times [2024-06-21 22:15:58,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:15:58,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126612205] [2024-06-21 22:15:58,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:15:58,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:15:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:16:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:16:03,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:16:03,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126612205] [2024-06-21 22:16:03,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126612205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:16:03,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:16:03,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 22:16:03,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046784856] [2024-06-21 22:16:03,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:16:03,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 22:16:03,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:16:03,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 22:16:03,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 22:16:03,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:16:03,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 365 transitions, 5154 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:16:03,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:16:03,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:16:03,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:16:07,883 INFO L124 PetriNetUnfolderBase]: 11685/16984 cut-off events. [2024-06-21 22:16:07,883 INFO L125 PetriNetUnfolderBase]: For 451150/451865 co-relation queries the response was YES. [2024-06-21 22:16:07,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112075 conditions, 16984 events. 11685/16984 cut-off events. For 451150/451865 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 102199 event pairs, 3426 based on Foata normal form. 215/17143 useless extension candidates. Maximal degree in co-relation 111994. Up to 14688 conditions per place. [2024-06-21 22:16:08,039 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 341 selfloop transitions, 98 changer transitions 0/449 dead transitions. [2024-06-21 22:16:08,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 449 transitions, 6497 flow [2024-06-21 22:16:08,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 22:16:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 22:16:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-21 22:16:08,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49794238683127573 [2024-06-21 22:16:08,041 INFO L175 Difference]: Start difference. First operand has 180 places, 365 transitions, 5154 flow. Second operand 9 states and 242 transitions. [2024-06-21 22:16:08,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 449 transitions, 6497 flow [2024-06-21 22:16:08,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 449 transitions, 6290 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-21 22:16:08,920 INFO L231 Difference]: Finished difference. Result has 184 places, 374 transitions, 5408 flow [2024-06-21 22:16:08,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4947, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5408, PETRI_PLACES=184, PETRI_TRANSITIONS=374} [2024-06-21 22:16:08,921 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 127 predicate places. [2024-06-21 22:16:08,921 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 374 transitions, 5408 flow [2024-06-21 22:16:08,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:16:08,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:16:08,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:16:08,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 22:16:08,921 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)] === [2024-06-21 22:16:08,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:16:08,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1106455521, now seen corresponding path program 1 times [2024-06-21 22:16:08,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:16:08,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499663393] [2024-06-21 22:16:08,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:16:08,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:16:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:16:13,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:16:13,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:16:13,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499663393] [2024-06-21 22:16:13,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499663393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:16:13,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:16:13,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 22:16:13,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382701848] [2024-06-21 22:16:13,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:16:13,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 22:16:13,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:16:13,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 22:16:13,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 22:16:13,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:16:13,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 374 transitions, 5408 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:16:13,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:16:13,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:16:13,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:16:18,596 INFO L124 PetriNetUnfolderBase]: 11841/17240 cut-off events. [2024-06-21 22:16:18,597 INFO L125 PetriNetUnfolderBase]: For 479800/480521 co-relation queries the response was YES. [2024-06-21 22:16:18,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115222 conditions, 17240 events. 11841/17240 cut-off events. For 479800/480521 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 104277 event pairs, 3490 based on Foata normal form. 197/17381 useless extension candidates. Maximal degree in co-relation 115139. Up to 15102 conditions per place. [2024-06-21 22:16:18,938 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 361 selfloop transitions, 101 changer transitions 0/472 dead transitions. [2024-06-21 22:16:18,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 472 transitions, 6721 flow [2024-06-21 22:16:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 22:16:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 22:16:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2024-06-21 22:16:18,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882154882154882 [2024-06-21 22:16:18,940 INFO L175 Difference]: Start difference. First operand has 184 places, 374 transitions, 5408 flow. Second operand 11 states and 290 transitions. [2024-06-21 22:16:18,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 472 transitions, 6721 flow [2024-06-21 22:16:20,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 472 transitions, 6510 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-21 22:16:20,095 INFO L231 Difference]: Finished difference. Result has 191 places, 379 transitions, 5527 flow [2024-06-21 22:16:20,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5197, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5527, PETRI_PLACES=191, PETRI_TRANSITIONS=379} [2024-06-21 22:16:20,096 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 134 predicate places. [2024-06-21 22:16:20,096 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 379 transitions, 5527 flow [2024-06-21 22:16:20,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:16:20,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:16:20,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:16:20,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 22:16:20,097 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)] === [2024-06-21 22:16:20,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:16:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash 338689515, now seen corresponding path program 7 times [2024-06-21 22:16:20,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:16:20,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364235958] [2024-06-21 22:16:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:16:20,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:16:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:16:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:16:24,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:16:24,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364235958] [2024-06-21 22:16:24,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364235958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:16:24,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:16:24,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 22:16:24,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880525801] [2024-06-21 22:16:24,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:16:24,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 22:16:24,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:16:24,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 22:16:24,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 22:16:24,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:16:24,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 379 transitions, 5527 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:16:24,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:16:24,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:16:24,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:16:29,028 INFO L124 PetriNetUnfolderBase]: 12156/17703 cut-off events. [2024-06-21 22:16:29,028 INFO L125 PetriNetUnfolderBase]: For 523875/524974 co-relation queries the response was YES. [2024-06-21 22:16:29,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120812 conditions, 17703 events. 12156/17703 cut-off events. For 523875/524974 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 107479 event pairs, 3364 based on Foata normal form. 327/17973 useless extension candidates. Maximal degree in co-relation 120726. Up to 16174 conditions per place. [2024-06-21 22:16:29,201 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 331 selfloop transitions, 119 changer transitions 0/460 dead transitions. [2024-06-21 22:16:29,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 460 transitions, 6750 flow [2024-06-21 22:16:29,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 22:16:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 22:16:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-06-21 22:16:29,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48703703703703705 [2024-06-21 22:16:29,202 INFO L175 Difference]: Start difference. First operand has 191 places, 379 transitions, 5527 flow. Second operand 10 states and 263 transitions. [2024-06-21 22:16:29,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 460 transitions, 6750 flow [2024-06-21 22:16:30,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 460 transitions, 6512 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-21 22:16:30,088 INFO L231 Difference]: Finished difference. Result has 193 places, 381 transitions, 5609 flow [2024-06-21 22:16:30,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5289, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5609, PETRI_PLACES=193, PETRI_TRANSITIONS=381} [2024-06-21 22:16:30,089 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 136 predicate places. [2024-06-21 22:16:30,089 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 381 transitions, 5609 flow [2024-06-21 22:16:30,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:16:30,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:16:30,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:16:30,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 22:16:30,090 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)] === [2024-06-21 22:16:30,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:16:30,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1858326077, now seen corresponding path program 8 times [2024-06-21 22:16:30,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:16:30,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894111589] [2024-06-21 22:16:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:16:30,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:16:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:16:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:16:34,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:16:34,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894111589] [2024-06-21 22:16:34,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894111589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:16:34,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:16:34,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 22:16:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300099855] [2024-06-21 22:16:34,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:16:34,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 22:16:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:16:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 22:16:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 22:16:34,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:16:34,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 381 transitions, 5609 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:16:34,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:16:34,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:16:34,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 22:16:39,203 INFO L124 PetriNetUnfolderBase]: 12127/17689 cut-off events. [2024-06-21 22:16:39,203 INFO L125 PetriNetUnfolderBase]: For 540823/541672 co-relation queries the response was YES. [2024-06-21 22:16:39,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120373 conditions, 17689 events. 12127/17689 cut-off events. For 540823/541672 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 107772 event pairs, 3465 based on Foata normal form. 284/17911 useless extension candidates. Maximal degree in co-relation 120286. Up to 15774 conditions per place. [2024-06-21 22:16:39,374 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 316 selfloop transitions, 121 changer transitions 0/447 dead transitions. [2024-06-21 22:16:39,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 447 transitions, 6766 flow [2024-06-21 22:16:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 22:16:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 22:16:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-21 22:16:39,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-21 22:16:39,376 INFO L175 Difference]: Start difference. First operand has 193 places, 381 transitions, 5609 flow. Second operand 8 states and 219 transitions. [2024-06-21 22:16:39,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 447 transitions, 6766 flow [2024-06-21 22:16:40,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 447 transitions, 6488 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 22:16:40,277 INFO L231 Difference]: Finished difference. Result has 193 places, 383 transitions, 5667 flow [2024-06-21 22:16:40,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5331, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5667, PETRI_PLACES=193, PETRI_TRANSITIONS=383} [2024-06-21 22:16:40,278 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 136 predicate places. [2024-06-21 22:16:40,278 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 383 transitions, 5667 flow [2024-06-21 22:16:40,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:16:40,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 22:16:40,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 22:16:40,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 22:16:40,279 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)] === [2024-06-21 22:16:40,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 22:16:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash 55394769, now seen corresponding path program 9 times [2024-06-21 22:16:40,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 22:16:40,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940053512] [2024-06-21 22:16:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 22:16:40,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 22:16:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 22:16:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 22:16:44,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 22:16:44,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940053512] [2024-06-21 22:16:44,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940053512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 22:16:44,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 22:16:44,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 22:16:44,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110364202] [2024-06-21 22:16:44,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 22:16:44,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 22:16:44,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 22:16:44,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 22:16:44,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 22:16:44,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 54 [2024-06-21 22:16:44,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 383 transitions, 5667 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 22:16:44,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 22:16:44,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 54 [2024-06-21 22:16:44,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand