./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe008_power.opt.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/safe008_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe008_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:57:15,595 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:57:15,662 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:57:15,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:57:15,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:57:15,678 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:57:15,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:57:15,679 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:57:15,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:57:15,680 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:57:15,680 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:57:15,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:57:15,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:57:15,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:57:15,681 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:57:15,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:57:15,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:57:15,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:57:15,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:57:15,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:57:15,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:57:15,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:57:15,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:57:15,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:57:15,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:57:15,684 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:57:15,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:57:15,684 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:57:15,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:57:15,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:57:15,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:57:15,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:57:15,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:57:15,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:57:15,686 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:57:15,686 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:57:15,686 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:57:15,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:57:15,687 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:57:15,687 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:57:15,687 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:57:15,687 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:57:15,687 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:57:15,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:57:15,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:57:15,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:57:15,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:57:15,871 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:57:15,871 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:57:15,872 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_power.opt.i [2024-06-28 03:57:16,898 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:57:17,103 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:57:17,104 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_power.opt.i [2024-06-28 03:57:17,116 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e8279be/de8b861eb7f74c3ca3742cdd40f627e0/FLAG63a35dc7e [2024-06-28 03:57:17,126 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60e8279be/de8b861eb7f74c3ca3742cdd40f627e0 [2024-06-28 03:57:17,128 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:57:17,133 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:57:17,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe008_power.opt.yml/witness.yml [2024-06-28 03:57:17,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:57:17,324 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:57:17,325 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:57:17,325 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:57:17,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:57:17,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:57:17" (1/2) ... [2024-06-28 03:57:17,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28741c71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:17, skipping insertion in model container [2024-06-28 03:57:17,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:57:17" (1/2) ... [2024-06-28 03:57:17,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21f701dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:57:17, skipping insertion in model container [2024-06-28 03:57:17,340 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:57:17" (2/2) ... [2024-06-28 03:57:17,341 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28741c71 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:17, skipping insertion in model container [2024-06-28 03:57:17,341 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:57:17" (2/2) ... [2024-06-28 03:57:17,341 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:57:17,440 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:57:17,441 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ((((((((((((((((((((((((((((((((! multithreaded || ((z == 0 || z == 1) || z == 2)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 03:57:17,441 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ((((((((((((((((((((((((((((((((! multithreaded || ((z == 0 || z == 1) || z == 2)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 03:57:17,441 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ((((((((((((((((((((((((((((((((! multithreaded || ((z == 0 || z == 1) || z == 2)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 03:57:17,441 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:57:17,441 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-28 03:57:17,486 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:57:17,838 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:57:17,848 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:57:17,979 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:57:18,032 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:57:18,032 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18 WrapperNode [2024-06-28 03:57:18,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:57:18,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:57:18,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:57:18,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:57:18,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,073 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,107 INFO L138 Inliner]: procedures = 175, calls = 86, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 254 [2024-06-28 03:57:18,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:57:18,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:57:18,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:57:18,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:57:18,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,129 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,160 INFO L175 MemorySlicer]: Split 44 memory accesses to 2 slices as follows [2, 42]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 6 writes are split as follows [0, 6]. [2024-06-28 03:57:18,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,176 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:57:18,194 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:57:18,194 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:57:18,194 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:57:18,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (1/1) ... [2024-06-28 03:57:18,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:57:18,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:57:18,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:57:18,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:57:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 03:57:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 03:57:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 03:57:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 03:57:18,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:57:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:57:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:57:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:57:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:57:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:57:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:57:18,254 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:57:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:57:18,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 03:57:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:57:18,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:57:18,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:57:18,258 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:57:18,387 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:57:18,389 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:57:18,843 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:57:18,843 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:57:19,208 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:57:19,208 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:57:19,208 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:57:19 BoogieIcfgContainer [2024-06-28 03:57:19,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:57:19,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:57:19,211 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:57:19,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:57:19,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:57:17" (1/4) ... [2024-06-28 03:57:19,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd415e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:57:19, skipping insertion in model container [2024-06-28 03:57:19,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:57:17" (2/4) ... [2024-06-28 03:57:19,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd415e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:57:19, skipping insertion in model container [2024-06-28 03:57:19,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:57:18" (3/4) ... [2024-06-28 03:57:19,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cd415e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:57:19, skipping insertion in model container [2024-06-28 03:57:19,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:57:19" (4/4) ... [2024-06-28 03:57:19,215 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_power.opt.i [2024-06-28 03:57:19,230 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:57:19,230 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:57:19,230 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:57:19,285 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:57:19,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 03:57:19,345 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-28 03:57:19,346 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:57:19,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:57:19,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 03:57:19,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-28 03:57:19,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:57:19,368 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;@1bc93d76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:57:19,369 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:57:19,372 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:57:19,372 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:57:19,373 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:57:19,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:19,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:57:19,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:19,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:19,380 INFO L85 PathProgramCache]: Analyzing trace with hash 848284857, now seen corresponding path program 1 times [2024-06-28 03:57:19,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:19,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051019099] [2024-06-28 03:57:19,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:19,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:20,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:20,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051019099] [2024-06-28 03:57:20,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051019099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:20,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:20,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:57:20,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826979395] [2024-06-28 03:57:20,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:20,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:57:20,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:20,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:57:20,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:57:21,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:21,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:21,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:21,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:21,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:21,627 INFO L124 PetriNetUnfolderBase]: 1472/2225 cut-off events. [2024-06-28 03:57:21,627 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 03:57:21,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4536 conditions, 2225 events. 1472/2225 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10135 event pairs, 1009 based on Foata normal form. 1/2182 useless extension candidates. Maximal degree in co-relation 4524. Up to 2210 conditions per place. [2024-06-28 03:57:21,642 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 36 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 03:57:21,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 185 flow [2024-06-28 03:57:21,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:57:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:57:21,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-06-28 03:57:21,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5317460317460317 [2024-06-28 03:57:21,653 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 67 transitions. [2024-06-28 03:57:21,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 185 flow [2024-06-28 03:57:21,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 180 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:57:21,658 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-28 03:57:21,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-28 03:57:21,663 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-28 03:57:21,663 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-28 03:57:21,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:21,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:21,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:21,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:57:21,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:21,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash -842003272, now seen corresponding path program 1 times [2024-06-28 03:57:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:21,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528659744] [2024-06-28 03:57:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:21,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:23,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:23,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:23,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528659744] [2024-06-28 03:57:23,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528659744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:23,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:23,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:57:23,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257531952] [2024-06-28 03:57:23,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:23,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:57:23,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:23,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:57:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:57:23,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:23,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:23,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:23,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:23,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:23,564 INFO L124 PetriNetUnfolderBase]: 1480/2236 cut-off events. [2024-06-28 03:57:23,564 INFO L125 PetriNetUnfolderBase]: For 404/412 co-relation queries the response was YES. [2024-06-28 03:57:23,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5142 conditions, 2236 events. 1480/2236 cut-off events. For 404/412 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10089 event pairs, 881 based on Foata normal form. 8/2241 useless extension candidates. Maximal degree in co-relation 5130. Up to 2173 conditions per place. [2024-06-28 03:57:23,573 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 49 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2024-06-28 03:57:23,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 298 flow [2024-06-28 03:57:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:57:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:57:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-06-28 03:57:23,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-28 03:57:23,575 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 93 transitions. [2024-06-28 03:57:23,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 298 flow [2024-06-28 03:57:23,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:57:23,577 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 174 flow [2024-06-28 03:57:23,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-06-28 03:57:23,578 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-28 03:57:23,578 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 174 flow [2024-06-28 03:57:23,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:23,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:23,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:23,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:57:23,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:23,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash -332296489, now seen corresponding path program 1 times [2024-06-28 03:57:23,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:23,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293740433] [2024-06-28 03:57:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:24,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:24,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293740433] [2024-06-28 03:57:24,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293740433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:24,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:24,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:57:24,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553874383] [2024-06-28 03:57:24,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:24,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:57:24,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:24,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:57:24,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:57:24,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:24,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:24,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:24,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:24,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:25,270 INFO L124 PetriNetUnfolderBase]: 1488/2247 cut-off events. [2024-06-28 03:57:25,271 INFO L125 PetriNetUnfolderBase]: For 1371/1389 co-relation queries the response was YES. [2024-06-28 03:57:25,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6034 conditions, 2247 events. 1488/2247 cut-off events. For 1371/1389 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10170 event pairs, 749 based on Foata normal form. 11/2255 useless extension candidates. Maximal degree in co-relation 6019. Up to 2174 conditions per place. [2024-06-28 03:57:25,281 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 64 selfloop transitions, 15 changer transitions 0/84 dead transitions. [2024-06-28 03:57:25,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 84 transitions, 460 flow [2024-06-28 03:57:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:57:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:57:25,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-28 03:57:25,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2024-06-28 03:57:25,284 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 174 flow. Second operand 5 states and 113 transitions. [2024-06-28 03:57:25,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 84 transitions, 460 flow [2024-06-28 03:57:25,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 84 transitions, 454 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 03:57:25,287 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 299 flow [2024-06-28 03:57:25,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2024-06-28 03:57:25,288 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-28 03:57:25,288 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 299 flow [2024-06-28 03:57:25,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:25,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:25,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:25,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:57:25,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:25,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1711255369, now seen corresponding path program 1 times [2024-06-28 03:57:25,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:25,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519410241] [2024-06-28 03:57:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:25,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:26,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:26,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519410241] [2024-06-28 03:57:26,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519410241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:26,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:26,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:57:26,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057581895] [2024-06-28 03:57:26,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:26,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:57:26,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:26,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:57:26,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:57:26,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:26,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:26,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:26,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:26,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:27,559 INFO L124 PetriNetUnfolderBase]: 1496/2258 cut-off events. [2024-06-28 03:57:27,559 INFO L125 PetriNetUnfolderBase]: For 2629/2646 co-relation queries the response was YES. [2024-06-28 03:57:27,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7085 conditions, 2258 events. 1496/2258 cut-off events. For 2629/2646 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10224 event pairs, 619 based on Foata normal form. 11/2266 useless extension candidates. Maximal degree in co-relation 7065. Up to 2155 conditions per place. [2024-06-28 03:57:27,572 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 74 selfloop transitions, 19 changer transitions 0/98 dead transitions. [2024-06-28 03:57:27,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 98 transitions, 617 flow [2024-06-28 03:57:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:57:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:57:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 03:57:27,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 03:57:27,574 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 299 flow. Second operand 6 states and 135 transitions. [2024-06-28 03:57:27,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 98 transitions, 617 flow [2024-06-28 03:57:27,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 98 transitions, 596 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 03:57:27,579 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 359 flow [2024-06-28 03:57:27,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=359, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2024-06-28 03:57:27,580 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2024-06-28 03:57:27,580 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 359 flow [2024-06-28 03:57:27,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:27,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:27,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:27,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:57:27,581 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:27,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:27,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1509307658, now seen corresponding path program 1 times [2024-06-28 03:57:27,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:27,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010529581] [2024-06-28 03:57:27,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:27,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:29,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:29,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:29,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010529581] [2024-06-28 03:57:29,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010529581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:29,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:29,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:57:29,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199227802] [2024-06-28 03:57:29,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:29,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:57:29,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:29,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:57:29,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:57:29,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:29,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:29,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:29,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:29,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:30,302 INFO L124 PetriNetUnfolderBase]: 1551/2343 cut-off events. [2024-06-28 03:57:30,303 INFO L125 PetriNetUnfolderBase]: For 4314/4331 co-relation queries the response was YES. [2024-06-28 03:57:30,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8076 conditions, 2343 events. 1551/2343 cut-off events. For 4314/4331 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10679 event pairs, 482 based on Foata normal form. 23/2363 useless extension candidates. Maximal degree in co-relation 8054. Up to 2112 conditions per place. [2024-06-28 03:57:30,316 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 79 selfloop transitions, 32 changer transitions 0/116 dead transitions. [2024-06-28 03:57:30,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 116 transitions, 789 flow [2024-06-28 03:57:30,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 03:57:30,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374149659863946 [2024-06-28 03:57:30,319 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 359 flow. Second operand 7 states and 158 transitions. [2024-06-28 03:57:30,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 116 transitions, 789 flow [2024-06-28 03:57:30,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 116 transitions, 740 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:57:30,324 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 470 flow [2024-06-28 03:57:30,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=470, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2024-06-28 03:57:30,325 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-06-28 03:57:30,325 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 470 flow [2024-06-28 03:57:30,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:30,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:30,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:30,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:57:30,326 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:30,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:30,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2018931377, now seen corresponding path program 1 times [2024-06-28 03:57:30,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:30,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067335223] [2024-06-28 03:57:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:30,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:32,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:32,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067335223] [2024-06-28 03:57:32,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067335223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:32,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:32,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:57:32,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955815317] [2024-06-28 03:57:32,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:32,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:57:32,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:32,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:57:32,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:57:32,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:32,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 470 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:32,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:32,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:32,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:32,938 INFO L124 PetriNetUnfolderBase]: 1546/2336 cut-off events. [2024-06-28 03:57:32,938 INFO L125 PetriNetUnfolderBase]: For 7374/7391 co-relation queries the response was YES. [2024-06-28 03:57:32,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9202 conditions, 2336 events. 1546/2336 cut-off events. For 7374/7391 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10602 event pairs, 587 based on Foata normal form. 8/2341 useless extension candidates. Maximal degree in co-relation 9176. Up to 2310 conditions per place. [2024-06-28 03:57:32,953 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 71 selfloop transitions, 8 changer transitions 0/83 dead transitions. [2024-06-28 03:57:32,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 83 transitions, 682 flow [2024-06-28 03:57:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:57:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:57:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-28 03:57:32,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:57:32,954 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 470 flow. Second operand 5 states and 85 transitions. [2024-06-28 03:57:32,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 83 transitions, 682 flow [2024-06-28 03:57:32,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 83 transitions, 642 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 03:57:32,960 INFO L231 Difference]: Finished difference. Result has 66 places, 69 transitions, 480 flow [2024-06-28 03:57:32,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=480, PETRI_PLACES=66, PETRI_TRANSITIONS=69} [2024-06-28 03:57:32,963 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-06-28 03:57:32,964 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 69 transitions, 480 flow [2024-06-28 03:57:32,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:32,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:32,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:32,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:57:32,965 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:32,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1837638856, now seen corresponding path program 1 times [2024-06-28 03:57:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:32,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850572959] [2024-06-28 03:57:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:32,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:34,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:34,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850572959] [2024-06-28 03:57:34,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850572959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:34,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:34,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:57:34,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940533528] [2024-06-28 03:57:34,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:34,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:57:34,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:34,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:57:34,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:57:34,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:57:34,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 69 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:34,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:34,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:57:34,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:35,747 INFO L124 PetriNetUnfolderBase]: 1768/2654 cut-off events. [2024-06-28 03:57:35,747 INFO L125 PetriNetUnfolderBase]: For 9616/9616 co-relation queries the response was YES. [2024-06-28 03:57:35,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10690 conditions, 2654 events. 1768/2654 cut-off events. For 9616/9616 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12082 event pairs, 682 based on Foata normal form. 4/2656 useless extension candidates. Maximal degree in co-relation 10661. Up to 2607 conditions per place. [2024-06-28 03:57:35,763 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 84 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2024-06-28 03:57:35,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 98 transitions, 775 flow [2024-06-28 03:57:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:57:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:57:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-28 03:57:35,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 03:57:35,764 INFO L175 Difference]: Start difference. First operand has 66 places, 69 transitions, 480 flow. Second operand 6 states and 96 transitions. [2024-06-28 03:57:35,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 98 transitions, 775 flow [2024-06-28 03:57:35,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 98 transitions, 740 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:57:35,772 INFO L231 Difference]: Finished difference. Result has 71 places, 78 transitions, 554 flow [2024-06-28 03:57:35,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=554, PETRI_PLACES=71, PETRI_TRANSITIONS=78} [2024-06-28 03:57:35,772 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2024-06-28 03:57:35,772 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 78 transitions, 554 flow [2024-06-28 03:57:35,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:35,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:35,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:35,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:57:35,773 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:35,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1126509966, now seen corresponding path program 1 times [2024-06-28 03:57:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:35,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498348169] [2024-06-28 03:57:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:35,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:37,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:37,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498348169] [2024-06-28 03:57:37,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498348169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:37,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:37,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:57:37,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073244070] [2024-06-28 03:57:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:37,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:57:37,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:57:37,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:57:37,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:37,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 78 transitions, 554 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:37,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:37,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:37,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:38,609 INFO L124 PetriNetUnfolderBase]: 1737/2616 cut-off events. [2024-06-28 03:57:38,609 INFO L125 PetriNetUnfolderBase]: For 12352/12418 co-relation queries the response was YES. [2024-06-28 03:57:38,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11433 conditions, 2616 events. 1737/2616 cut-off events. For 12352/12418 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12187 event pairs, 622 based on Foata normal form. 20/2619 useless extension candidates. Maximal degree in co-relation 11401. Up to 2443 conditions per place. [2024-06-28 03:57:38,627 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 81 selfloop transitions, 31 changer transitions 0/119 dead transitions. [2024-06-28 03:57:38,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 119 transitions, 1002 flow [2024-06-28 03:57:38,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:57:38,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:57:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 03:57:38,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-28 03:57:38,632 INFO L175 Difference]: Start difference. First operand has 71 places, 78 transitions, 554 flow. Second operand 6 states and 116 transitions. [2024-06-28 03:57:38,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 119 transitions, 1002 flow [2024-06-28 03:57:38,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 119 transitions, 994 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 03:57:38,646 INFO L231 Difference]: Finished difference. Result has 77 places, 90 transitions, 745 flow [2024-06-28 03:57:38,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=77, PETRI_TRANSITIONS=90} [2024-06-28 03:57:38,649 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-06-28 03:57:38,649 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 90 transitions, 745 flow [2024-06-28 03:57:38,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:38,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:38,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:38,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:57:38,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:38,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:38,651 INFO L85 PathProgramCache]: Analyzing trace with hash -739689374, now seen corresponding path program 2 times [2024-06-28 03:57:38,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:38,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011609433] [2024-06-28 03:57:38,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:38,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:40,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:40,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011609433] [2024-06-28 03:57:40,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011609433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:40,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:40,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:57:40,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060452094] [2024-06-28 03:57:40,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:40,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:57:40,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:40,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:57:40,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:57:40,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:40,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 90 transitions, 745 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:40,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:40,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:40,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:41,638 INFO L124 PetriNetUnfolderBase]: 1757/2648 cut-off events. [2024-06-28 03:57:41,638 INFO L125 PetriNetUnfolderBase]: For 16189/16272 co-relation queries the response was YES. [2024-06-28 03:57:41,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12621 conditions, 2648 events. 1757/2648 cut-off events. For 16189/16272 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12347 event pairs, 612 based on Foata normal form. 24/2656 useless extension candidates. Maximal degree in co-relation 12585. Up to 2478 conditions per place. [2024-06-28 03:57:41,650 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 77 selfloop transitions, 29 changer transitions 0/113 dead transitions. [2024-06-28 03:57:41,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 113 transitions, 1055 flow [2024-06-28 03:57:41,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:57:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:57:41,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 03:57:41,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 03:57:41,651 INFO L175 Difference]: Start difference. First operand has 77 places, 90 transitions, 745 flow. Second operand 6 states and 110 transitions. [2024-06-28 03:57:41,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 113 transitions, 1055 flow [2024-06-28 03:57:41,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 113 transitions, 1005 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-28 03:57:41,663 INFO L231 Difference]: Finished difference. Result has 82 places, 90 transitions, 764 flow [2024-06-28 03:57:41,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=764, PETRI_PLACES=82, PETRI_TRANSITIONS=90} [2024-06-28 03:57:41,664 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-06-28 03:57:41,665 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 90 transitions, 764 flow [2024-06-28 03:57:41,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:41,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:41,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:41,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:57:41,665 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:41,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash 90960683, now seen corresponding path program 1 times [2024-06-28 03:57:41,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:41,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316701661] [2024-06-28 03:57:41,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:41,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:43,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:43,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316701661] [2024-06-28 03:57:43,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316701661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:43,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:43,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:57:43,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11281620] [2024-06-28 03:57:43,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:43,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:57:43,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:57:43,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:57:43,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:43,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 90 transitions, 764 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:43,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:43,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:43,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:44,738 INFO L124 PetriNetUnfolderBase]: 1771/2672 cut-off events. [2024-06-28 03:57:44,738 INFO L125 PetriNetUnfolderBase]: For 17706/17784 co-relation queries the response was YES. [2024-06-28 03:57:44,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13017 conditions, 2672 events. 1771/2672 cut-off events. For 17706/17784 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12340 event pairs, 616 based on Foata normal form. 24/2681 useless extension candidates. Maximal degree in co-relation 12978. Up to 2576 conditions per place. [2024-06-28 03:57:44,753 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 105 selfloop transitions, 25 changer transitions 0/137 dead transitions. [2024-06-28 03:57:44,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 137 transitions, 1231 flow [2024-06-28 03:57:44,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:44,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 03:57:44,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-28 03:57:44,756 INFO L175 Difference]: Start difference. First operand has 82 places, 90 transitions, 764 flow. Second operand 8 states and 142 transitions. [2024-06-28 03:57:44,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 137 transitions, 1231 flow [2024-06-28 03:57:44,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 137 transitions, 1178 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:57:44,770 INFO L231 Difference]: Finished difference. Result has 89 places, 101 transitions, 895 flow [2024-06-28 03:57:44,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=895, PETRI_PLACES=89, PETRI_TRANSITIONS=101} [2024-06-28 03:57:44,771 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-06-28 03:57:44,771 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 101 transitions, 895 flow [2024-06-28 03:57:44,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:44,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:44,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:44,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:57:44,772 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:44,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2118972807, now seen corresponding path program 2 times [2024-06-28 03:57:44,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:44,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677534475] [2024-06-28 03:57:44,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:44,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:46,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:46,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677534475] [2024-06-28 03:57:46,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677534475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:46,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:46,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:57:46,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164911549] [2024-06-28 03:57:46,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:46,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:57:46,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:46,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:57:46,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:57:46,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:46,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 101 transitions, 895 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:46,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:46,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:46,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:47,736 INFO L124 PetriNetUnfolderBase]: 1798/2711 cut-off events. [2024-06-28 03:57:47,736 INFO L125 PetriNetUnfolderBase]: For 21254/21353 co-relation queries the response was YES. [2024-06-28 03:57:47,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13849 conditions, 2711 events. 1798/2711 cut-off events. For 21254/21353 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12553 event pairs, 598 based on Foata normal form. 40/2736 useless extension candidates. Maximal degree in co-relation 13806. Up to 2566 conditions per place. [2024-06-28 03:57:47,754 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 101 selfloop transitions, 31 changer transitions 0/139 dead transitions. [2024-06-28 03:57:47,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 139 transitions, 1331 flow [2024-06-28 03:57:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:47,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:47,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 03:57:47,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-06-28 03:57:47,756 INFO L175 Difference]: Start difference. First operand has 89 places, 101 transitions, 895 flow. Second operand 7 states and 131 transitions. [2024-06-28 03:57:47,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 139 transitions, 1331 flow [2024-06-28 03:57:47,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 139 transitions, 1271 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 03:57:47,771 INFO L231 Difference]: Finished difference. Result has 92 places, 105 transitions, 966 flow [2024-06-28 03:57:47,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=966, PETRI_PLACES=92, PETRI_TRANSITIONS=105} [2024-06-28 03:57:47,772 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-06-28 03:57:47,772 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 105 transitions, 966 flow [2024-06-28 03:57:47,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:47,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:47,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:47,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:57:47,773 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:47,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash -987947179, now seen corresponding path program 1 times [2024-06-28 03:57:47,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:47,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050185869] [2024-06-28 03:57:47,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:47,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:49,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:49,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:49,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050185869] [2024-06-28 03:57:49,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050185869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:49,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:49,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:57:49,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201392573] [2024-06-28 03:57:49,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:49,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:57:49,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:49,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:57:49,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:57:49,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:57:49,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 105 transitions, 966 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:49,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:49,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:57:49,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:50,987 INFO L124 PetriNetUnfolderBase]: 1922/2883 cut-off events. [2024-06-28 03:57:50,987 INFO L125 PetriNetUnfolderBase]: For 24778/24786 co-relation queries the response was YES. [2024-06-28 03:57:50,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14895 conditions, 2883 events. 1922/2883 cut-off events. For 24778/24786 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13252 event pairs, 632 based on Foata normal form. 12/2892 useless extension candidates. Maximal degree in co-relation 14851. Up to 2716 conditions per place. [2024-06-28 03:57:51,002 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 126 selfloop transitions, 23 changer transitions 0/152 dead transitions. [2024-06-28 03:57:51,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 152 transitions, 1512 flow [2024-06-28 03:57:51,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:51,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 03:57:51,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-28 03:57:51,004 INFO L175 Difference]: Start difference. First operand has 92 places, 105 transitions, 966 flow. Second operand 7 states and 122 transitions. [2024-06-28 03:57:51,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 152 transitions, 1512 flow [2024-06-28 03:57:51,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 152 transitions, 1403 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:51,023 INFO L231 Difference]: Finished difference. Result has 96 places, 119 transitions, 1062 flow [2024-06-28 03:57:51,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1062, PETRI_PLACES=96, PETRI_TRANSITIONS=119} [2024-06-28 03:57:51,024 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 53 predicate places. [2024-06-28 03:57:51,024 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 119 transitions, 1062 flow [2024-06-28 03:57:51,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:51,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:51,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:51,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:57:51,024 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:51,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:51,025 INFO L85 PathProgramCache]: Analyzing trace with hash 562072495, now seen corresponding path program 3 times [2024-06-28 03:57:51,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:51,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665879600] [2024-06-28 03:57:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:51,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:52,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:52,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665879600] [2024-06-28 03:57:52,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665879600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:52,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:52,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:57:52,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831577617] [2024-06-28 03:57:52,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:52,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:57:52,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:52,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:57:52,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:57:52,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:52,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 119 transitions, 1062 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:52,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:52,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:52,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:53,764 INFO L124 PetriNetUnfolderBase]: 1864/2810 cut-off events. [2024-06-28 03:57:53,764 INFO L125 PetriNetUnfolderBase]: For 25934/26215 co-relation queries the response was YES. [2024-06-28 03:57:53,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14863 conditions, 2810 events. 1864/2810 cut-off events. For 25934/26215 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13163 event pairs, 566 based on Foata normal form. 32/2780 useless extension candidates. Maximal degree in co-relation 14816. Up to 2624 conditions per place. [2024-06-28 03:57:53,780 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 111 selfloop transitions, 41 changer transitions 0/162 dead transitions. [2024-06-28 03:57:53,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 162 transitions, 1597 flow [2024-06-28 03:57:53,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 03:57:53,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-28 03:57:53,782 INFO L175 Difference]: Start difference. First operand has 96 places, 119 transitions, 1062 flow. Second operand 7 states and 128 transitions. [2024-06-28 03:57:53,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 162 transitions, 1597 flow [2024-06-28 03:57:53,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 162 transitions, 1565 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:57:53,801 INFO L231 Difference]: Finished difference. Result has 103 places, 134 transitions, 1327 flow [2024-06-28 03:57:53,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1030, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1327, PETRI_PLACES=103, PETRI_TRANSITIONS=134} [2024-06-28 03:57:53,801 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-06-28 03:57:53,801 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 134 transitions, 1327 flow [2024-06-28 03:57:53,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:53,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:53,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:53,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:57:53,802 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:53,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:53,803 INFO L85 PathProgramCache]: Analyzing trace with hash -316583155, now seen corresponding path program 4 times [2024-06-28 03:57:53,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:53,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001571928] [2024-06-28 03:57:53,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:53,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:55,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001571928] [2024-06-28 03:57:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001571928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:55,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:55,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:57:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401045454] [2024-06-28 03:57:55,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:55,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:57:55,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:55,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:57:55,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:57:55,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:57:55,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 134 transitions, 1327 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:55,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:55,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:57:55,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:56,610 INFO L124 PetriNetUnfolderBase]: 1860/2811 cut-off events. [2024-06-28 03:57:56,610 INFO L125 PetriNetUnfolderBase]: For 30839/31098 co-relation queries the response was YES. [2024-06-28 03:57:56,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15929 conditions, 2811 events. 1860/2811 cut-off events. For 30839/31098 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13194 event pairs, 577 based on Foata normal form. 30/2784 useless extension candidates. Maximal degree in co-relation 15878. Up to 2622 conditions per place. [2024-06-28 03:57:56,625 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 117 selfloop transitions, 38 changer transitions 0/165 dead transitions. [2024-06-28 03:57:56,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 165 transitions, 1827 flow [2024-06-28 03:57:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:56,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 03:57:56,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-06-28 03:57:56,626 INFO L175 Difference]: Start difference. First operand has 103 places, 134 transitions, 1327 flow. Second operand 7 states and 124 transitions. [2024-06-28 03:57:56,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 165 transitions, 1827 flow [2024-06-28 03:57:56,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 165 transitions, 1767 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-06-28 03:57:56,648 INFO L231 Difference]: Finished difference. Result has 109 places, 138 transitions, 1419 flow [2024-06-28 03:57:56,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1419, PETRI_PLACES=109, PETRI_TRANSITIONS=138} [2024-06-28 03:57:56,649 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-06-28 03:57:56,649 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 138 transitions, 1419 flow [2024-06-28 03:57:56,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:56,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:56,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:56,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:57:56,650 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:56,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash 739441351, now seen corresponding path program 2 times [2024-06-28 03:57:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:56,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394932109] [2024-06-28 03:57:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:58,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394932109] [2024-06-28 03:57:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394932109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:58,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:58,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:57:58,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396600017] [2024-06-28 03:57:58,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:58,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:57:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:58,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:57:58,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:57:58,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:57:58,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 138 transitions, 1419 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:58,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:58,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:57:58,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:59,787 INFO L124 PetriNetUnfolderBase]: 1986/2976 cut-off events. [2024-06-28 03:57:59,787 INFO L125 PetriNetUnfolderBase]: For 33608/33639 co-relation queries the response was YES. [2024-06-28 03:57:59,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17010 conditions, 2976 events. 1986/2976 cut-off events. For 33608/33639 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13643 event pairs, 620 based on Foata normal form. 26/2998 useless extension candidates. Maximal degree in co-relation 16956. Up to 2793 conditions per place. [2024-06-28 03:57:59,808 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 140 selfloop transitions, 29 changer transitions 0/172 dead transitions. [2024-06-28 03:57:59,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 172 transitions, 1928 flow [2024-06-28 03:57:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 03:57:59,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945578231292517 [2024-06-28 03:57:59,810 INFO L175 Difference]: Start difference. First operand has 109 places, 138 transitions, 1419 flow. Second operand 7 states and 116 transitions. [2024-06-28 03:57:59,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 172 transitions, 1928 flow [2024-06-28 03:57:59,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 172 transitions, 1809 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 03:57:59,837 INFO L231 Difference]: Finished difference. Result has 113 places, 144 transitions, 1420 flow [2024-06-28 03:57:59,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1420, PETRI_PLACES=113, PETRI_TRANSITIONS=144} [2024-06-28 03:57:59,837 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2024-06-28 03:57:59,838 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 144 transitions, 1420 flow [2024-06-28 03:57:59,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:57:59,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:59,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:59,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:57:59,838 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:59,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:59,839 INFO L85 PathProgramCache]: Analyzing trace with hash 739204201, now seen corresponding path program 3 times [2024-06-28 03:57:59,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:59,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876117365] [2024-06-28 03:57:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:59,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:01,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:01,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876117365] [2024-06-28 03:58:01,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876117365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:01,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:01,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:58:01,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476091982] [2024-06-28 03:58:01,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:01,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:58:01,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:58:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:58:01,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:58:01,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 144 transitions, 1420 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:01,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:01,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:58:01,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:03,079 INFO L124 PetriNetUnfolderBase]: 1976/2962 cut-off events. [2024-06-28 03:58:03,080 INFO L125 PetriNetUnfolderBase]: For 35414/35445 co-relation queries the response was YES. [2024-06-28 03:58:03,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17030 conditions, 2962 events. 1976/2962 cut-off events. For 35414/35445 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13577 event pairs, 618 based on Foata normal form. 26/2984 useless extension candidates. Maximal degree in co-relation 16974. Up to 2785 conditions per place. [2024-06-28 03:58:03,101 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 140 selfloop transitions, 28 changer transitions 0/171 dead transitions. [2024-06-28 03:58:03,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 171 transitions, 1830 flow [2024-06-28 03:58:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:58:03,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:58:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 03:58:03,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945578231292517 [2024-06-28 03:58:03,103 INFO L175 Difference]: Start difference. First operand has 113 places, 144 transitions, 1420 flow. Second operand 7 states and 116 transitions. [2024-06-28 03:58:03,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 171 transitions, 1830 flow [2024-06-28 03:58:03,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 171 transitions, 1795 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 03:58:03,134 INFO L231 Difference]: Finished difference. Result has 118 places, 144 transitions, 1449 flow [2024-06-28 03:58:03,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1449, PETRI_PLACES=118, PETRI_TRANSITIONS=144} [2024-06-28 03:58:03,135 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-28 03:58:03,135 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 144 transitions, 1449 flow [2024-06-28 03:58:03,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:03,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:03,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:03,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:58:03,135 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:03,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:03,136 INFO L85 PathProgramCache]: Analyzing trace with hash 739450279, now seen corresponding path program 1 times [2024-06-28 03:58:03,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:03,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143280524] [2024-06-28 03:58:03,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:03,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:05,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:05,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143280524] [2024-06-28 03:58:05,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143280524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:05,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:05,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:05,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267832126] [2024-06-28 03:58:05,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:05,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:05,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:05,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:05,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:58:05,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 144 transitions, 1449 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:05,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:05,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:58:05,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:07,026 INFO L124 PetriNetUnfolderBase]: 1968/2951 cut-off events. [2024-06-28 03:58:07,026 INFO L125 PetriNetUnfolderBase]: For 38249/38249 co-relation queries the response was YES. [2024-06-28 03:58:07,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17147 conditions, 2951 events. 1968/2951 cut-off events. For 38249/38249 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 13527 event pairs, 620 based on Foata normal form. 4/2953 useless extension candidates. Maximal degree in co-relation 17089. Up to 2877 conditions per place. [2024-06-28 03:58:07,045 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 156 selfloop transitions, 13 changer transitions 0/172 dead transitions. [2024-06-28 03:58:07,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 172 transitions, 1875 flow [2024-06-28 03:58:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:58:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:58:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 03:58:07,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741496598639456 [2024-06-28 03:58:07,047 INFO L175 Difference]: Start difference. First operand has 118 places, 144 transitions, 1449 flow. Second operand 7 states and 110 transitions. [2024-06-28 03:58:07,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 172 transitions, 1875 flow [2024-06-28 03:58:07,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 172 transitions, 1819 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:07,080 INFO L231 Difference]: Finished difference. Result has 120 places, 146 transitions, 1446 flow [2024-06-28 03:58:07,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1446, PETRI_PLACES=120, PETRI_TRANSITIONS=146} [2024-06-28 03:58:07,080 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 77 predicate places. [2024-06-28 03:58:07,080 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 146 transitions, 1446 flow [2024-06-28 03:58:07,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:07,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:07,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:07,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:58:07,081 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:07,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:07,082 INFO L85 PathProgramCache]: Analyzing trace with hash 240570829, now seen corresponding path program 1 times [2024-06-28 03:58:07,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:07,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920512553] [2024-06-28 03:58:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:07,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:10,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:10,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920512553] [2024-06-28 03:58:10,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920512553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:10,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:10,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:10,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441200022] [2024-06-28 03:58:10,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:10,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:10,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:10,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:10,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:10,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:10,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 146 transitions, 1446 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:58:10,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:10,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:10,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:11,345 INFO L124 PetriNetUnfolderBase]: 1925/2902 cut-off events. [2024-06-28 03:58:11,345 INFO L125 PetriNetUnfolderBase]: For 47792/47902 co-relation queries the response was YES. [2024-06-28 03:58:11,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17802 conditions, 2902 events. 1925/2902 cut-off events. For 47792/47902 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13597 event pairs, 554 based on Foata normal form. 68/2908 useless extension candidates. Maximal degree in co-relation 17743. Up to 2474 conditions per place. [2024-06-28 03:58:11,366 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 118 selfloop transitions, 68 changer transitions 0/200 dead transitions. [2024-06-28 03:58:11,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 200 transitions, 2182 flow [2024-06-28 03:58:11,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:11,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 03:58:11,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-28 03:58:11,368 INFO L175 Difference]: Start difference. First operand has 120 places, 146 transitions, 1446 flow. Second operand 8 states and 159 transitions. [2024-06-28 03:58:11,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 200 transitions, 2182 flow [2024-06-28 03:58:11,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 200 transitions, 2147 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:11,402 INFO L231 Difference]: Finished difference. Result has 123 places, 154 transitions, 1693 flow [2024-06-28 03:58:11,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1693, PETRI_PLACES=123, PETRI_TRANSITIONS=154} [2024-06-28 03:58:11,403 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 80 predicate places. [2024-06-28 03:58:11,403 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 154 transitions, 1693 flow [2024-06-28 03:58:11,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:58:11,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:11,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:11,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:58:11,404 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:11,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash 240661194, now seen corresponding path program 1 times [2024-06-28 03:58:11,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:11,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5440088] [2024-06-28 03:58:11,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:11,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:14,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:14,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5440088] [2024-06-28 03:58:14,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5440088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:14,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:14,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:14,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199712734] [2024-06-28 03:58:14,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:14,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:14,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:14,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:14,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:58:14,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 154 transitions, 1693 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:14,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:14,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:58:14,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:15,318 INFO L124 PetriNetUnfolderBase]: 2042/3054 cut-off events. [2024-06-28 03:58:15,319 INFO L125 PetriNetUnfolderBase]: For 48207/48219 co-relation queries the response was YES. [2024-06-28 03:58:15,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19000 conditions, 3054 events. 2042/3054 cut-off events. For 48207/48219 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14016 event pairs, 615 based on Foata normal form. 16/3068 useless extension candidates. Maximal degree in co-relation 18940. Up to 2928 conditions per place. [2024-06-28 03:58:15,341 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 178 selfloop transitions, 23 changer transitions 0/204 dead transitions. [2024-06-28 03:58:15,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 204 transitions, 2329 flow [2024-06-28 03:58:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:15,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:15,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:58:15,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 03:58:15,343 INFO L175 Difference]: Start difference. First operand has 123 places, 154 transitions, 1693 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:58:15,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 204 transitions, 2329 flow [2024-06-28 03:58:15,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 204 transitions, 2201 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:15,427 INFO L231 Difference]: Finished difference. Result has 129 places, 167 transitions, 1786 flow [2024-06-28 03:58:15,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1786, PETRI_PLACES=129, PETRI_TRANSITIONS=167} [2024-06-28 03:58:15,427 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 86 predicate places. [2024-06-28 03:58:15,427 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 167 transitions, 1786 flow [2024-06-28 03:58:15,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:15,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:15,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:15,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:58:15,428 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:15,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:15,429 INFO L85 PathProgramCache]: Analyzing trace with hash -561739445, now seen corresponding path program 2 times [2024-06-28 03:58:15,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:15,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920426203] [2024-06-28 03:58:15,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:15,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:18,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:18,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920426203] [2024-06-28 03:58:18,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920426203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:18,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:18,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:18,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117747970] [2024-06-28 03:58:18,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:18,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:18,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:18,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:18,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:18,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:18,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 167 transitions, 1786 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:58:18,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:18,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:18,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:19,395 INFO L124 PetriNetUnfolderBase]: 1990/2998 cut-off events. [2024-06-28 03:58:19,395 INFO L125 PetriNetUnfolderBase]: For 58879/58963 co-relation queries the response was YES. [2024-06-28 03:58:19,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19805 conditions, 2998 events. 1990/2998 cut-off events. For 58879/58963 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 14074 event pairs, 550 based on Foata normal form. 24/2961 useless extension candidates. Maximal degree in co-relation 19741. Up to 2752 conditions per place. [2024-06-28 03:58:19,418 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 147 selfloop transitions, 47 changer transitions 0/211 dead transitions. [2024-06-28 03:58:19,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 211 transitions, 2398 flow [2024-06-28 03:58:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 03:58:19,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 03:58:19,419 INFO L175 Difference]: Start difference. First operand has 129 places, 167 transitions, 1786 flow. Second operand 8 states and 148 transitions. [2024-06-28 03:58:19,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 211 transitions, 2398 flow [2024-06-28 03:58:19,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 211 transitions, 2346 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 03:58:19,470 INFO L231 Difference]: Finished difference. Result has 134 places, 171 transitions, 1906 flow [2024-06-28 03:58:19,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1906, PETRI_PLACES=134, PETRI_TRANSITIONS=171} [2024-06-28 03:58:19,471 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-28 03:58:19,471 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 171 transitions, 1906 flow [2024-06-28 03:58:19,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:58:19,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:19,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:19,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:58:19,471 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:19,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1259920824, now seen corresponding path program 2 times [2024-06-28 03:58:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:19,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567194899] [2024-06-28 03:58:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:19,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:21,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567194899] [2024-06-28 03:58:21,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567194899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:21,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:21,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:21,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284327618] [2024-06-28 03:58:21,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:21,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:21,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:21,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:21,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:21,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:58:21,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 171 transitions, 1906 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:21,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:21,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:58:21,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:22,813 INFO L124 PetriNetUnfolderBase]: 2100/3140 cut-off events. [2024-06-28 03:58:22,813 INFO L125 PetriNetUnfolderBase]: For 57027/57043 co-relation queries the response was YES. [2024-06-28 03:58:22,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20403 conditions, 3140 events. 2100/3140 cut-off events. For 57027/57043 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14420 event pairs, 585 based on Foata normal form. 20/3158 useless extension candidates. Maximal degree in co-relation 20337. Up to 2991 conditions per place. [2024-06-28 03:58:22,837 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 185 selfloop transitions, 30 changer transitions 0/218 dead transitions. [2024-06-28 03:58:22,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 218 transitions, 2513 flow [2024-06-28 03:58:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:58:22,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 03:58:22,838 INFO L175 Difference]: Start difference. First operand has 134 places, 171 transitions, 1906 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:58:22,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 218 transitions, 2513 flow [2024-06-28 03:58:22,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 218 transitions, 2385 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:22,890 INFO L231 Difference]: Finished difference. Result has 139 places, 186 transitions, 1986 flow [2024-06-28 03:58:22,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1986, PETRI_PLACES=139, PETRI_TRANSITIONS=186} [2024-06-28 03:58:22,890 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 96 predicate places. [2024-06-28 03:58:22,890 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 186 transitions, 1986 flow [2024-06-28 03:58:22,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:22,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:22,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:22,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:58:22,891 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:22,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:22,891 INFO L85 PathProgramCache]: Analyzing trace with hash -561595140, now seen corresponding path program 3 times [2024-06-28 03:58:22,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:22,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185457675] [2024-06-28 03:58:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:22,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:24,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185457675] [2024-06-28 03:58:24,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185457675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:24,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:24,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:24,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128680909] [2024-06-28 03:58:24,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:24,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:24,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:24,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:58:24,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 186 transitions, 1986 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:24,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:24,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:58:24,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:25,979 INFO L124 PetriNetUnfolderBase]: 2126/3178 cut-off events. [2024-06-28 03:58:25,979 INFO L125 PetriNetUnfolderBase]: For 61737/61755 co-relation queries the response was YES. [2024-06-28 03:58:25,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21282 conditions, 3178 events. 2126/3178 cut-off events. For 61737/61755 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14641 event pairs, 583 based on Foata normal form. 22/3198 useless extension candidates. Maximal degree in co-relation 21212. Up to 2996 conditions per place. [2024-06-28 03:58:26,001 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 187 selfloop transitions, 35 changer transitions 0/225 dead transitions. [2024-06-28 03:58:26,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 225 transitions, 2582 flow [2024-06-28 03:58:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 03:58:26,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-28 03:58:26,003 INFO L175 Difference]: Start difference. First operand has 139 places, 186 transitions, 1986 flow. Second operand 8 states and 135 transitions. [2024-06-28 03:58:26,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 225 transitions, 2582 flow [2024-06-28 03:58:26,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 225 transitions, 2551 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 03:58:26,058 INFO L231 Difference]: Finished difference. Result has 146 places, 192 transitions, 2109 flow [2024-06-28 03:58:26,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2109, PETRI_PLACES=146, PETRI_TRANSITIONS=192} [2024-06-28 03:58:26,058 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 103 predicate places. [2024-06-28 03:58:26,058 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 192 transitions, 2109 flow [2024-06-28 03:58:26,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:26,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:26,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:26,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:58:26,059 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:26,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:26,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1259926559, now seen corresponding path program 3 times [2024-06-28 03:58:26,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:26,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212160201] [2024-06-28 03:58:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:26,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:28,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:28,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212160201] [2024-06-28 03:58:28,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212160201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:28,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:28,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:28,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131029285] [2024-06-28 03:58:28,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:28,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:28,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:28,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:28,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:28,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:28,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 192 transitions, 2109 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:58:28,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:28,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:28,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:29,560 INFO L124 PetriNetUnfolderBase]: 2085/3134 cut-off events. [2024-06-28 03:58:29,561 INFO L125 PetriNetUnfolderBase]: For 75820/75955 co-relation queries the response was YES. [2024-06-28 03:58:29,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22290 conditions, 3134 events. 2085/3134 cut-off events. For 75820/75955 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14787 event pairs, 519 based on Foata normal form. 24/3101 useless extension candidates. Maximal degree in co-relation 22216. Up to 2871 conditions per place. [2024-06-28 03:58:29,582 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 158 selfloop transitions, 48 changer transitions 0/230 dead transitions. [2024-06-28 03:58:29,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 230 transitions, 2731 flow [2024-06-28 03:58:29,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:29,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:58:29,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-28 03:58:29,584 INFO L175 Difference]: Start difference. First operand has 146 places, 192 transitions, 2109 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:58:29,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 230 transitions, 2731 flow [2024-06-28 03:58:29,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 230 transitions, 2663 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:29,642 INFO L231 Difference]: Finished difference. Result has 150 places, 196 transitions, 2221 flow [2024-06-28 03:58:29,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2041, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2221, PETRI_PLACES=150, PETRI_TRANSITIONS=196} [2024-06-28 03:58:29,643 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 107 predicate places. [2024-06-28 03:58:29,643 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 196 transitions, 2221 flow [2024-06-28 03:58:29,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:58:29,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:29,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:29,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:58:29,644 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:29,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:29,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1224141110, now seen corresponding path program 4 times [2024-06-28 03:58:29,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:29,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204766324] [2024-06-28 03:58:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:29,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:31,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:31,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204766324] [2024-06-28 03:58:31,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204766324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:31,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:31,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:31,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963410834] [2024-06-28 03:58:31,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:31,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:31,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:31,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:31,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:31,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:58:31,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 196 transitions, 2221 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:31,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:31,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:58:31,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:32,778 INFO L124 PetriNetUnfolderBase]: 2202/3288 cut-off events. [2024-06-28 03:58:32,778 INFO L125 PetriNetUnfolderBase]: For 74032/74072 co-relation queries the response was YES. [2024-06-28 03:58:32,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23068 conditions, 3288 events. 2202/3288 cut-off events. For 74032/74072 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15152 event pairs, 582 based on Foata normal form. 32/3316 useless extension candidates. Maximal degree in co-relation 22992. Up to 3094 conditions per place. [2024-06-28 03:58:32,801 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 200 selfloop transitions, 34 changer transitions 0/237 dead transitions. [2024-06-28 03:58:32,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 237 transitions, 2967 flow [2024-06-28 03:58:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:32,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 03:58:32,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 03:58:32,803 INFO L175 Difference]: Start difference. First operand has 150 places, 196 transitions, 2221 flow. Second operand 8 states and 132 transitions. [2024-06-28 03:58:32,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 237 transitions, 2967 flow [2024-06-28 03:58:32,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 237 transitions, 2827 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:32,868 INFO L231 Difference]: Finished difference. Result has 153 places, 204 transitions, 2269 flow [2024-06-28 03:58:32,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2269, PETRI_PLACES=153, PETRI_TRANSITIONS=204} [2024-06-28 03:58:32,868 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2024-06-28 03:58:32,868 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 204 transitions, 2269 flow [2024-06-28 03:58:32,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:32,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:32,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:32,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:58:32,869 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:32,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:32,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1440495668, now seen corresponding path program 5 times [2024-06-28 03:58:32,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:32,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611578850] [2024-06-28 03:58:32,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:32,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:34,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:34,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:34,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611578850] [2024-06-28 03:58:34,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611578850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:34,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:34,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:34,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166526116] [2024-06-28 03:58:34,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:34,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:34,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:34,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:34,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:34,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:58:34,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 204 transitions, 2269 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:34,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:34,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:58:34,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:36,090 INFO L124 PetriNetUnfolderBase]: 2241/3345 cut-off events. [2024-06-28 03:58:36,090 INFO L125 PetriNetUnfolderBase]: For 81287/81327 co-relation queries the response was YES. [2024-06-28 03:58:36,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23913 conditions, 3345 events. 2241/3345 cut-off events. For 81287/81327 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 15473 event pairs, 582 based on Foata normal form. 34/3375 useless extension candidates. Maximal degree in co-relation 23835. Up to 3135 conditions per place. [2024-06-28 03:58:36,120 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 196 selfloop transitions, 42 changer transitions 0/241 dead transitions. [2024-06-28 03:58:36,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 241 transitions, 2938 flow [2024-06-28 03:58:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:36,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 03:58:36,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-28 03:58:36,125 INFO L175 Difference]: Start difference. First operand has 153 places, 204 transitions, 2269 flow. Second operand 8 states and 131 transitions. [2024-06-28 03:58:36,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 241 transitions, 2938 flow [2024-06-28 03:58:36,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 241 transitions, 2856 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 03:58:36,269 INFO L231 Difference]: Finished difference. Result has 158 places, 210 transitions, 2395 flow [2024-06-28 03:58:36,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2198, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2395, PETRI_PLACES=158, PETRI_TRANSITIONS=210} [2024-06-28 03:58:36,269 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 115 predicate places. [2024-06-28 03:58:36,270 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 210 transitions, 2395 flow [2024-06-28 03:58:36,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:36,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:36,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:36,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:58:36,270 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:36,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:36,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1440489933, now seen corresponding path program 4 times [2024-06-28 03:58:36,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:36,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887898587] [2024-06-28 03:58:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:38,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:38,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887898587] [2024-06-28 03:58:38,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887898587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:38,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:38,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:38,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254769973] [2024-06-28 03:58:38,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:38,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:38,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:38,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:38,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:38,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:38,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 210 transitions, 2395 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:58:38,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:38,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:38,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:39,957 INFO L124 PetriNetUnfolderBase]: 2169/3262 cut-off events. [2024-06-28 03:58:39,957 INFO L125 PetriNetUnfolderBase]: For 92542/92699 co-relation queries the response was YES. [2024-06-28 03:58:39,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24416 conditions, 3262 events. 2169/3262 cut-off events. For 92542/92699 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15523 event pairs, 526 based on Foata normal form. 36/3240 useless extension candidates. Maximal degree in co-relation 24336. Up to 2933 conditions per place. [2024-06-28 03:58:39,981 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 159 selfloop transitions, 62 changer transitions 0/249 dead transitions. [2024-06-28 03:58:39,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 249 transitions, 3141 flow [2024-06-28 03:58:39,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:58:39,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-28 03:58:39,983 INFO L175 Difference]: Start difference. First operand has 158 places, 210 transitions, 2395 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:58:39,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 249 transitions, 3141 flow [2024-06-28 03:58:40,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 249 transitions, 2971 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:40,055 INFO L231 Difference]: Finished difference. Result has 161 places, 216 transitions, 2487 flow [2024-06-28 03:58:40,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2487, PETRI_PLACES=161, PETRI_TRANSITIONS=216} [2024-06-28 03:58:40,056 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 118 predicate places. [2024-06-28 03:58:40,056 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 216 transitions, 2487 flow [2024-06-28 03:58:40,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2024-06-28 03:58:40,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:40,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:40,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:58:40,056 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:40,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:40,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1447847318, now seen corresponding path program 6 times [2024-06-28 03:58:40,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:40,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078409977] [2024-06-28 03:58:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:40,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:41,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:41,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:41,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078409977] [2024-06-28 03:58:41,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078409977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:41,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:41,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:41,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335324258] [2024-06-28 03:58:41,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:41,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:41,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:41,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:41,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:41,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:58:41,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 216 transitions, 2487 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:41,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:41,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:58:41,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:43,252 INFO L124 PetriNetUnfolderBase]: 2248/3357 cut-off events. [2024-06-28 03:58:43,252 INFO L125 PetriNetUnfolderBase]: For 96426/96466 co-relation queries the response was YES. [2024-06-28 03:58:43,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25100 conditions, 3357 events. 2248/3357 cut-off events. For 96426/96466 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15505 event pairs, 577 based on Foata normal form. 34/3387 useless extension candidates. Maximal degree in co-relation 25018. Up to 3147 conditions per place. [2024-06-28 03:58:43,281 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 205 selfloop transitions, 43 changer transitions 0/251 dead transitions. [2024-06-28 03:58:43,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 251 transitions, 3143 flow [2024-06-28 03:58:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:58:43,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:58:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 03:58:43,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-28 03:58:43,283 INFO L175 Difference]: Start difference. First operand has 161 places, 216 transitions, 2487 flow. Second operand 8 states and 129 transitions. [2024-06-28 03:58:43,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 251 transitions, 3143 flow [2024-06-28 03:58:43,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 251 transitions, 2960 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:43,385 INFO L231 Difference]: Finished difference. Result has 165 places, 220 transitions, 2477 flow [2024-06-28 03:58:43,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2477, PETRI_PLACES=165, PETRI_TRANSITIONS=220} [2024-06-28 03:58:43,386 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 122 predicate places. [2024-06-28 03:58:43,386 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 220 transitions, 2477 flow [2024-06-28 03:58:43,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:43,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:43,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:43,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:58:43,386 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:43,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:43,387 INFO L85 PathProgramCache]: Analyzing trace with hash -671208216, now seen corresponding path program 1 times [2024-06-28 03:58:43,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:43,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580631771] [2024-06-28 03:58:43,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:43,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:46,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:46,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580631771] [2024-06-28 03:58:46,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580631771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:46,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:46,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:46,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726758387] [2024-06-28 03:58:46,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:46,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:46,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:46,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:46,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:46,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:46,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 220 transitions, 2477 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:46,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:46,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:46,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:47,972 INFO L124 PetriNetUnfolderBase]: 2408/3634 cut-off events. [2024-06-28 03:58:47,972 INFO L125 PetriNetUnfolderBase]: For 127437/127602 co-relation queries the response was YES. [2024-06-28 03:58:47,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28207 conditions, 3634 events. 2408/3634 cut-off events. For 127437/127602 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17713 event pairs, 376 based on Foata normal form. 42/3620 useless extension candidates. Maximal degree in co-relation 28123. Up to 2685 conditions per place. [2024-06-28 03:58:48,005 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 167 selfloop transitions, 91 changer transitions 0/288 dead transitions. [2024-06-28 03:58:48,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 288 transitions, 3554 flow [2024-06-28 03:58:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:48,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 03:58:48,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-28 03:58:48,006 INFO L175 Difference]: Start difference. First operand has 165 places, 220 transitions, 2477 flow. Second operand 9 states and 183 transitions. [2024-06-28 03:58:48,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 288 transitions, 3554 flow [2024-06-28 03:58:48,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 288 transitions, 3422 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:48,096 INFO L231 Difference]: Finished difference. Result has 169 places, 227 transitions, 2695 flow [2024-06-28 03:58:48,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2695, PETRI_PLACES=169, PETRI_TRANSITIONS=227} [2024-06-28 03:58:48,097 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-06-28 03:58:48,097 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 227 transitions, 2695 flow [2024-06-28 03:58:48,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:48,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:48,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:48,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:58:48,097 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:48,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:48,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1132236914, now seen corresponding path program 2 times [2024-06-28 03:58:48,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:48,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419396725] [2024-06-28 03:58:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:48,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:51,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:51,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419396725] [2024-06-28 03:58:51,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419396725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:51,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:51,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:51,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528350619] [2024-06-28 03:58:51,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:51,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:51,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:51,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:51,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:51,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:58:51,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 227 transitions, 2695 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:51,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:51,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:58:51,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:52,734 INFO L124 PetriNetUnfolderBase]: 2488/3762 cut-off events. [2024-06-28 03:58:52,734 INFO L125 PetriNetUnfolderBase]: For 141724/141880 co-relation queries the response was YES. [2024-06-28 03:58:52,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30225 conditions, 3762 events. 2488/3762 cut-off events. For 141724/141880 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 18544 event pairs, 538 based on Foata normal form. 56/3761 useless extension candidates. Maximal degree in co-relation 30139. Up to 3177 conditions per place. [2024-06-28 03:58:52,770 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 163 selfloop transitions, 91 changer transitions 0/284 dead transitions. [2024-06-28 03:58:52,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 284 transitions, 3535 flow [2024-06-28 03:58:52,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:52,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 03:58:52,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-28 03:58:52,771 INFO L175 Difference]: Start difference. First operand has 169 places, 227 transitions, 2695 flow. Second operand 9 states and 177 transitions. [2024-06-28 03:58:52,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 284 transitions, 3535 flow [2024-06-28 03:58:52,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 284 transitions, 3405 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:52,886 INFO L231 Difference]: Finished difference. Result has 173 places, 230 transitions, 2837 flow [2024-06-28 03:58:52,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2837, PETRI_PLACES=173, PETRI_TRANSITIONS=230} [2024-06-28 03:58:52,887 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 130 predicate places. [2024-06-28 03:58:52,887 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 230 transitions, 2837 flow [2024-06-28 03:58:52,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:52,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:52,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:52,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:58:52,888 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:52,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:52,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1132236790, now seen corresponding path program 1 times [2024-06-28 03:58:52,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:52,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913244350] [2024-06-28 03:58:52,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:52,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:52,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:55,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:55,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913244350] [2024-06-28 03:58:55,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913244350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:55,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:55,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:55,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804285060] [2024-06-28 03:58:55,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:55,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:55,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:55,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:55,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:55,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:58:55,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 230 transitions, 2837 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:55,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:55,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:58:55,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:56,853 INFO L124 PetriNetUnfolderBase]: 2642/3967 cut-off events. [2024-06-28 03:58:56,853 INFO L125 PetriNetUnfolderBase]: For 139002/139020 co-relation queries the response was YES. [2024-06-28 03:58:56,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31800 conditions, 3967 events. 2642/3967 cut-off events. For 139002/139020 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 19371 event pairs, 639 based on Foata normal form. 20/3985 useless extension candidates. Maximal degree in co-relation 31712. Up to 3393 conditions per place. [2024-06-28 03:58:56,889 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 218 selfloop transitions, 79 changer transitions 0/300 dead transitions. [2024-06-28 03:58:56,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 300 transitions, 4073 flow [2024-06-28 03:58:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:56,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:56,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:58:56,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-06-28 03:58:56,890 INFO L175 Difference]: Start difference. First operand has 173 places, 230 transitions, 2837 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:58:56,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 300 transitions, 4073 flow [2024-06-28 03:58:57,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 300 transitions, 3864 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:58:57,035 INFO L231 Difference]: Finished difference. Result has 178 places, 246 transitions, 3127 flow [2024-06-28 03:58:57,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2643, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3127, PETRI_PLACES=178, PETRI_TRANSITIONS=246} [2024-06-28 03:58:57,035 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 135 predicate places. [2024-06-28 03:58:57,035 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 246 transitions, 3127 flow [2024-06-28 03:58:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:58:57,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:57,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:57,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:58:57,036 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:57,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1129440404, now seen corresponding path program 3 times [2024-06-28 03:58:57,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:57,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581812465] [2024-06-28 03:58:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:57,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:00,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:00,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581812465] [2024-06-28 03:59:00,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581812465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:00,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:00,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:00,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169044642] [2024-06-28 03:59:00,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:00,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:00,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:59:00,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 246 transitions, 3127 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:00,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:00,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:59:00,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:01,605 INFO L124 PetriNetUnfolderBase]: 2634/3985 cut-off events. [2024-06-28 03:59:01,605 INFO L125 PetriNetUnfolderBase]: For 165450/165585 co-relation queries the response was YES. [2024-06-28 03:59:01,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33424 conditions, 3985 events. 2634/3985 cut-off events. For 165450/165585 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 19950 event pairs, 562 based on Foata normal form. 41/3967 useless extension candidates. Maximal degree in co-relation 33332. Up to 3603 conditions per place. [2024-06-28 03:59:01,643 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 215 selfloop transitions, 50 changer transitions 0/299 dead transitions. [2024-06-28 03:59:01,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 299 transitions, 3978 flow [2024-06-28 03:59:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:59:01,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:59:01,644 INFO L175 Difference]: Start difference. First operand has 178 places, 246 transitions, 3127 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:59:01,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 299 transitions, 3978 flow [2024-06-28 03:59:01,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 299 transitions, 3864 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 03:59:01,787 INFO L231 Difference]: Finished difference. Result has 184 places, 249 transitions, 3198 flow [2024-06-28 03:59:01,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3013, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3198, PETRI_PLACES=184, PETRI_TRANSITIONS=249} [2024-06-28 03:59:01,787 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 141 predicate places. [2024-06-28 03:59:01,787 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 249 transitions, 3198 flow [2024-06-28 03:59:01,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:01,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:01,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:01,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:59:01,788 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:01,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1129435630, now seen corresponding path program 2 times [2024-06-28 03:59:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:01,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568295401] [2024-06-28 03:59:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:01,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:04,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:04,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568295401] [2024-06-28 03:59:04,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568295401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:04,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:04,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:04,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795487234] [2024-06-28 03:59:04,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:04,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:04,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:04,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:04,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:04,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:59:04,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 249 transitions, 3198 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:04,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:04,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:59:04,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:05,983 INFO L124 PetriNetUnfolderBase]: 2745/4126 cut-off events. [2024-06-28 03:59:05,983 INFO L125 PetriNetUnfolderBase]: For 158543/158559 co-relation queries the response was YES. [2024-06-28 03:59:06,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34182 conditions, 4126 events. 2745/4126 cut-off events. For 158543/158559 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20318 event pairs, 624 based on Foata normal form. 20/4144 useless extension candidates. Maximal degree in co-relation 34088. Up to 3972 conditions per place. [2024-06-28 03:59:06,020 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 266 selfloop transitions, 26 changer transitions 0/295 dead transitions. [2024-06-28 03:59:06,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 295 transitions, 3956 flow [2024-06-28 03:59:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 03:59:06,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 03:59:06,021 INFO L175 Difference]: Start difference. First operand has 184 places, 249 transitions, 3198 flow. Second operand 9 states and 147 transitions. [2024-06-28 03:59:06,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 295 transitions, 3956 flow [2024-06-28 03:59:06,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 295 transitions, 3852 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:06,169 INFO L231 Difference]: Finished difference. Result has 186 places, 252 transitions, 3210 flow [2024-06-28 03:59:06,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3094, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3210, PETRI_PLACES=186, PETRI_TRANSITIONS=252} [2024-06-28 03:59:06,170 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 143 predicate places. [2024-06-28 03:59:06,170 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 252 transitions, 3210 flow [2024-06-28 03:59:06,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:06,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:06,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:06,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:59:06,170 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:06,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:06,171 INFO L85 PathProgramCache]: Analyzing trace with hash -518306732, now seen corresponding path program 3 times [2024-06-28 03:59:06,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:06,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483160233] [2024-06-28 03:59:06,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:06,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:10,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:10,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483160233] [2024-06-28 03:59:10,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483160233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:10,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:10,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:10,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097132325] [2024-06-28 03:59:10,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:10,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:10,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:10,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:10,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:10,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:59:10,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 252 transitions, 3210 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:10,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:10,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:59:10,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:11,494 INFO L124 PetriNetUnfolderBase]: 2735/4112 cut-off events. [2024-06-28 03:59:11,494 INFO L125 PetriNetUnfolderBase]: For 164868/164884 co-relation queries the response was YES. [2024-06-28 03:59:11,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34392 conditions, 4112 events. 2735/4112 cut-off events. For 164868/164884 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20298 event pairs, 620 based on Foata normal form. 20/4130 useless extension candidates. Maximal degree in co-relation 34297. Up to 3919 conditions per place. [2024-06-28 03:59:11,534 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 269 selfloop transitions, 30 changer transitions 0/302 dead transitions. [2024-06-28 03:59:11,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 302 transitions, 4029 flow [2024-06-28 03:59:11,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 03:59:11,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-28 03:59:11,536 INFO L175 Difference]: Start difference. First operand has 186 places, 252 transitions, 3210 flow. Second operand 9 states and 150 transitions. [2024-06-28 03:59:11,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 302 transitions, 4029 flow [2024-06-28 03:59:11,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 302 transitions, 3937 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:11,716 INFO L231 Difference]: Finished difference. Result has 189 places, 258 transitions, 3298 flow [2024-06-28 03:59:11,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3298, PETRI_PLACES=189, PETRI_TRANSITIONS=258} [2024-06-28 03:59:11,716 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-06-28 03:59:11,716 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 258 transitions, 3298 flow [2024-06-28 03:59:11,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:11,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:11,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:11,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:59:11,717 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:11,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:11,717 INFO L85 PathProgramCache]: Analyzing trace with hash -403010912, now seen corresponding path program 4 times [2024-06-28 03:59:11,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:11,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122226141] [2024-06-28 03:59:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:11,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:14,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:14,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122226141] [2024-06-28 03:59:14,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122226141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:14,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:14,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:14,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228025186] [2024-06-28 03:59:14,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:14,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:14,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:14,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:14,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:14,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:59:14,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 258 transitions, 3298 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:14,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:14,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:59:14,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:15,938 INFO L124 PetriNetUnfolderBase]: 2995/4492 cut-off events. [2024-06-28 03:59:15,938 INFO L125 PetriNetUnfolderBase]: For 205856/205874 co-relation queries the response was YES. [2024-06-28 03:59:15,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39321 conditions, 4492 events. 2995/4492 cut-off events. For 205856/205874 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22499 event pairs, 612 based on Foata normal form. 20/4510 useless extension candidates. Maximal degree in co-relation 39224. Up to 3814 conditions per place. [2024-06-28 03:59:15,976 INFO L140 encePairwiseOnDemand]: 26/42 looper letters, 233 selfloop transitions, 105 changer transitions 0/341 dead transitions. [2024-06-28 03:59:15,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 341 transitions, 4796 flow [2024-06-28 03:59:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:59:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:59:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 03:59:15,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 03:59:15,978 INFO L175 Difference]: Start difference. First operand has 189 places, 258 transitions, 3298 flow. Second operand 10 states and 183 transitions. [2024-06-28 03:59:15,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 341 transitions, 4796 flow [2024-06-28 03:59:16,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 341 transitions, 4703 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 03:59:16,215 INFO L231 Difference]: Finished difference. Result has 195 places, 284 transitions, 3914 flow [2024-06-28 03:59:16,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3205, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3914, PETRI_PLACES=195, PETRI_TRANSITIONS=284} [2024-06-28 03:59:16,216 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-06-28 03:59:16,216 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 284 transitions, 3914 flow [2024-06-28 03:59:16,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:16,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:16,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:16,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:59:16,216 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:16,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:16,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1425728372, now seen corresponding path program 5 times [2024-06-28 03:59:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:16,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746412863] [2024-06-28 03:59:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:16,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:18,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:18,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746412863] [2024-06-28 03:59:18,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746412863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:18,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:18,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:18,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703436348] [2024-06-28 03:59:18,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:18,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:18,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:18,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:18,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:18,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:59:18,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 284 transitions, 3914 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:18,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:18,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:59:18,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:20,177 INFO L124 PetriNetUnfolderBase]: 3057/4582 cut-off events. [2024-06-28 03:59:20,177 INFO L125 PetriNetUnfolderBase]: For 221463/221485 co-relation queries the response was YES. [2024-06-28 03:59:20,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42170 conditions, 4582 events. 3057/4582 cut-off events. For 221463/221485 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22973 event pairs, 607 based on Foata normal form. 26/4606 useless extension candidates. Maximal degree in co-relation 42070. Up to 3868 conditions per place. [2024-06-28 03:59:20,223 INFO L140 encePairwiseOnDemand]: 26/42 looper letters, 240 selfloop transitions, 108 changer transitions 0/351 dead transitions. [2024-06-28 03:59:20,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 351 transitions, 5325 flow [2024-06-28 03:59:20,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:59:20,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:59:20,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 03:59:20,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-28 03:59:20,226 INFO L175 Difference]: Start difference. First operand has 195 places, 284 transitions, 3914 flow. Second operand 10 states and 184 transitions. [2024-06-28 03:59:20,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 351 transitions, 5325 flow [2024-06-28 03:59:20,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 351 transitions, 5168 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:20,474 INFO L231 Difference]: Finished difference. Result has 200 places, 291 transitions, 4106 flow [2024-06-28 03:59:20,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3757, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4106, PETRI_PLACES=200, PETRI_TRANSITIONS=291} [2024-06-28 03:59:20,474 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 157 predicate places. [2024-06-28 03:59:20,474 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 291 transitions, 4106 flow [2024-06-28 03:59:20,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:20,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:20,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:20,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:59:20,475 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:20,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:20,475 INFO L85 PathProgramCache]: Analyzing trace with hash -402837932, now seen corresponding path program 6 times [2024-06-28 03:59:20,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:20,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040526721] [2024-06-28 03:59:20,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:20,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:22,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:22,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:22,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040526721] [2024-06-28 03:59:22,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040526721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:22,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:22,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:22,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967656236] [2024-06-28 03:59:22,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:22,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:22,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:22,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:22,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:22,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:59:22,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 291 transitions, 4106 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:22,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:22,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:59:22,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:24,452 INFO L124 PetriNetUnfolderBase]: 3050/4573 cut-off events. [2024-06-28 03:59:24,452 INFO L125 PetriNetUnfolderBase]: For 228052/228074 co-relation queries the response was YES. [2024-06-28 03:59:24,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42780 conditions, 4573 events. 3050/4573 cut-off events. For 228052/228074 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22885 event pairs, 671 based on Foata normal form. 26/4597 useless extension candidates. Maximal degree in co-relation 42677. Up to 4364 conditions per place. [2024-06-28 03:59:24,502 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 295 selfloop transitions, 39 changer transitions 0/337 dead transitions. [2024-06-28 03:59:24,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 337 transitions, 5060 flow [2024-06-28 03:59:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:59:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:59:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 03:59:24,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880952380952381 [2024-06-28 03:59:24,504 INFO L175 Difference]: Start difference. First operand has 200 places, 291 transitions, 4106 flow. Second operand 10 states and 163 transitions. [2024-06-28 03:59:24,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 337 transitions, 5060 flow [2024-06-28 03:59:24,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 337 transitions, 4919 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:24,782 INFO L231 Difference]: Finished difference. Result has 203 places, 292 transitions, 4072 flow [2024-06-28 03:59:24,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3973, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4072, PETRI_PLACES=203, PETRI_TRANSITIONS=292} [2024-06-28 03:59:24,783 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 160 predicate places. [2024-06-28 03:59:24,783 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 292 transitions, 4072 flow [2024-06-28 03:59:24,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:24,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:24,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:24,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:59:24,784 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:24,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:24,784 INFO L85 PathProgramCache]: Analyzing trace with hash -403015686, now seen corresponding path program 4 times [2024-06-28 03:59:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:24,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022646706] [2024-06-28 03:59:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:24,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:27,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:27,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022646706] [2024-06-28 03:59:27,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022646706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:27,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:27,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:27,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918847601] [2024-06-28 03:59:27,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:27,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:27,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:27,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:27,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:27,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:59:27,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 292 transitions, 4072 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:27,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:27,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:59:27,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:29,335 INFO L124 PetriNetUnfolderBase]: 3057/4613 cut-off events. [2024-06-28 03:59:29,335 INFO L125 PetriNetUnfolderBase]: For 257506/257614 co-relation queries the response was YES. [2024-06-28 03:59:29,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43685 conditions, 4613 events. 3057/4613 cut-off events. For 257506/257614 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 23565 event pairs, 607 based on Foata normal form. 40/4595 useless extension candidates. Maximal degree in co-relation 43582. Up to 4191 conditions per place. [2024-06-28 03:59:29,382 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 241 selfloop transitions, 53 changer transitions 0/339 dead transitions. [2024-06-28 03:59:29,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 339 transitions, 4994 flow [2024-06-28 03:59:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:29,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:29,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:59:29,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 03:59:29,384 INFO L175 Difference]: Start difference. First operand has 203 places, 292 transitions, 4072 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:59:29,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 339 transitions, 4994 flow [2024-06-28 03:59:29,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 339 transitions, 4834 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:59:29,645 INFO L231 Difference]: Finished difference. Result has 203 places, 294 transitions, 4086 flow [2024-06-28 03:59:29,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3912, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4086, PETRI_PLACES=203, PETRI_TRANSITIONS=294} [2024-06-28 03:59:29,646 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 160 predicate places. [2024-06-28 03:59:29,646 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 294 transitions, 4086 flow [2024-06-28 03:59:29,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:29,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:29,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:29,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:59:29,646 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:29,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:29,647 INFO L85 PathProgramCache]: Analyzing trace with hash -402830988, now seen corresponding path program 1 times [2024-06-28 03:59:29,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:29,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426068948] [2024-06-28 03:59:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:29,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:32,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:32,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426068948] [2024-06-28 03:59:32,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426068948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:32,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:32,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:32,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697220763] [2024-06-28 03:59:32,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:32,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:32,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:32,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:32,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:32,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:59:32,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 294 transitions, 4086 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:32,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:32,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:59:32,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:34,334 INFO L124 PetriNetUnfolderBase]: 3158/4745 cut-off events. [2024-06-28 03:59:34,334 INFO L125 PetriNetUnfolderBase]: For 251228/251250 co-relation queries the response was YES. [2024-06-28 03:59:34,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44379 conditions, 4745 events. 3158/4745 cut-off events. For 251228/251250 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 24028 event pairs, 689 based on Foata normal form. 24/4767 useless extension candidates. Maximal degree in co-relation 44275. Up to 4546 conditions per place. [2024-06-28 03:59:34,382 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 288 selfloop transitions, 38 changer transitions 0/329 dead transitions. [2024-06-28 03:59:34,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 329 transitions, 4864 flow [2024-06-28 03:59:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:34,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:34,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 03:59:34,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 03:59:34,383 INFO L175 Difference]: Start difference. First operand has 203 places, 294 transitions, 4086 flow. Second operand 8 states and 134 transitions. [2024-06-28 03:59:34,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 329 transitions, 4864 flow [2024-06-28 03:59:34,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 329 transitions, 4750 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:34,658 INFO L231 Difference]: Finished difference. Result has 204 places, 296 transitions, 4093 flow [2024-06-28 03:59:34,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3972, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4093, PETRI_PLACES=204, PETRI_TRANSITIONS=296} [2024-06-28 03:59:34,659 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2024-06-28 03:59:34,659 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 296 transitions, 4093 flow [2024-06-28 03:59:34,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:34,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:34,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:34,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:59:34,659 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:34,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:34,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1013964784, now seen corresponding path program 1 times [2024-06-28 03:59:34,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:34,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560561731] [2024-06-28 03:59:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:34,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:37,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:37,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560561731] [2024-06-28 03:59:37,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560561731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:37,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:37,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:37,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362241329] [2024-06-28 03:59:37,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:37,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:37,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:37,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:37,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:59:37,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 296 transitions, 4093 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:37,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:37,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:59:37,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:39,311 INFO L124 PetriNetUnfolderBase]: 3202/4810 cut-off events. [2024-06-28 03:59:39,311 INFO L125 PetriNetUnfolderBase]: For 264476/264498 co-relation queries the response was YES. [2024-06-28 03:59:39,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45571 conditions, 4810 events. 3202/4810 cut-off events. For 264476/264498 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 24386 event pairs, 688 based on Foata normal form. 22/4830 useless extension candidates. Maximal degree in co-relation 45466. Up to 4518 conditions per place. [2024-06-28 03:59:39,449 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 288 selfloop transitions, 54 changer transitions 0/345 dead transitions. [2024-06-28 03:59:39,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 345 transitions, 5253 flow [2024-06-28 03:59:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:39,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 03:59:39,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41005291005291006 [2024-06-28 03:59:39,451 INFO L175 Difference]: Start difference. First operand has 204 places, 296 transitions, 4093 flow. Second operand 9 states and 155 transitions. [2024-06-28 03:59:39,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 345 transitions, 5253 flow [2024-06-28 03:59:39,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 345 transitions, 5116 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:39,702 INFO L231 Difference]: Finished difference. Result has 208 places, 303 transitions, 4309 flow [2024-06-28 03:59:39,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3956, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4309, PETRI_PLACES=208, PETRI_TRANSITIONS=303} [2024-06-28 03:59:39,703 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 165 predicate places. [2024-06-28 03:59:39,703 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 303 transitions, 4309 flow [2024-06-28 03:59:39,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:39,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:39,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:39,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:59:39,703 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:39,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:39,704 INFO L85 PathProgramCache]: Analyzing trace with hash 934414276, now seen corresponding path program 2 times [2024-06-28 03:59:39,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:39,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951009213] [2024-06-28 03:59:39,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:39,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:42,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:42,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:42,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951009213] [2024-06-28 03:59:42,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951009213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:42,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:42,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:42,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057060655] [2024-06-28 03:59:42,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:42,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:42,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:42,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:59:42,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 303 transitions, 4309 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:42,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:42,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:59:42,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:44,385 INFO L124 PetriNetUnfolderBase]: 3222/4842 cut-off events. [2024-06-28 03:59:44,385 INFO L125 PetriNetUnfolderBase]: For 281430/281479 co-relation queries the response was YES. [2024-06-28 03:59:44,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46478 conditions, 4842 events. 3222/4842 cut-off events. For 281430/281479 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 24616 event pairs, 696 based on Foata normal form. 38/4876 useless extension candidates. Maximal degree in co-relation 46371. Up to 4643 conditions per place. [2024-06-28 03:59:44,440 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 294 selfloop transitions, 39 changer transitions 0/336 dead transitions. [2024-06-28 03:59:44,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 336 transitions, 5105 flow [2024-06-28 03:59:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 03:59:44,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 03:59:44,441 INFO L175 Difference]: Start difference. First operand has 208 places, 303 transitions, 4309 flow. Second operand 8 states and 128 transitions. [2024-06-28 03:59:44,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 336 transitions, 5105 flow [2024-06-28 03:59:44,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 336 transitions, 4992 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:44,837 INFO L231 Difference]: Finished difference. Result has 209 places, 305 transitions, 4323 flow [2024-06-28 03:59:44,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4196, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4323, PETRI_PLACES=209, PETRI_TRANSITIONS=305} [2024-06-28 03:59:44,838 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 166 predicate places. [2024-06-28 03:59:44,838 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 305 transitions, 4323 flow [2024-06-28 03:59:44,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:44,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:44,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:44,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:59:44,838 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:44,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1705521716, now seen corresponding path program 7 times [2024-06-28 03:59:44,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:44,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167170763] [2024-06-28 03:59:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:47,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:47,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167170763] [2024-06-28 03:59:47,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167170763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:47,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:47,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:47,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845719850] [2024-06-28 03:59:47,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:47,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:47,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:47,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:47,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:47,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:59:47,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 305 transitions, 4323 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:47,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:47,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:59:47,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:49,274 INFO L124 PetriNetUnfolderBase]: 3248/4880 cut-off events. [2024-06-28 03:59:49,274 INFO L125 PetriNetUnfolderBase]: For 291723/291772 co-relation queries the response was YES. [2024-06-28 03:59:49,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47049 conditions, 4880 events. 3248/4880 cut-off events. For 291723/291772 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 24802 event pairs, 696 based on Foata normal form. 38/4914 useless extension candidates. Maximal degree in co-relation 46941. Up to 4576 conditions per place. [2024-06-28 03:59:49,323 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 280 selfloop transitions, 62 changer transitions 0/345 dead transitions. [2024-06-28 03:59:49,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 345 transitions, 5176 flow [2024-06-28 03:59:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 03:59:49,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 03:59:49,325 INFO L175 Difference]: Start difference. First operand has 209 places, 305 transitions, 4323 flow. Second operand 9 states and 147 transitions. [2024-06-28 03:59:49,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 345 transitions, 5176 flow [2024-06-28 03:59:49,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 345 transitions, 5071 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:49,658 INFO L231 Difference]: Finished difference. Result has 212 places, 308 transitions, 4412 flow [2024-06-28 03:59:49,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4218, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4412, PETRI_PLACES=212, PETRI_TRANSITIONS=308} [2024-06-28 03:59:49,659 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 169 predicate places. [2024-06-28 03:59:49,659 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 308 transitions, 4412 flow [2024-06-28 03:59:49,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:49,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:49,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:49,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:59:49,659 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:49,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1705517066, now seen corresponding path program 8 times [2024-06-28 03:59:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:49,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120702714] [2024-06-28 03:59:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:49,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:52,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:52,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:52,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120702714] [2024-06-28 03:59:52,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120702714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:52,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:52,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:52,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425824339] [2024-06-28 03:59:52,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:52,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:52,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:52,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:52,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:52,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 03:59:52,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 308 transitions, 4412 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:52,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:52,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 03:59:52,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:54,191 INFO L124 PetriNetUnfolderBase]: 3292/4944 cut-off events. [2024-06-28 03:59:54,191 INFO L125 PetriNetUnfolderBase]: For 304975/305024 co-relation queries the response was YES. [2024-06-28 03:59:54,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48016 conditions, 4944 events. 3292/4944 cut-off events. For 304975/305024 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 25170 event pairs, 688 based on Foata normal form. 38/4978 useless extension candidates. Maximal degree in co-relation 47907. Up to 4633 conditions per place. [2024-06-28 03:59:54,240 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 302 selfloop transitions, 55 changer transitions 0/360 dead transitions. [2024-06-28 03:59:54,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 360 transitions, 5558 flow [2024-06-28 03:59:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:59:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:59:54,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 03:59:54,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880952380952381 [2024-06-28 03:59:54,242 INFO L175 Difference]: Start difference. First operand has 212 places, 308 transitions, 4412 flow. Second operand 10 states and 163 transitions. [2024-06-28 03:59:54,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 360 transitions, 5558 flow [2024-06-28 03:59:54,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 360 transitions, 5399 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:59:54,567 INFO L231 Difference]: Finished difference. Result has 216 places, 315 transitions, 4524 flow [2024-06-28 03:59:54,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4253, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4524, PETRI_PLACES=216, PETRI_TRANSITIONS=315} [2024-06-28 03:59:54,568 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 173 predicate places. [2024-06-28 03:59:54,568 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 315 transitions, 4524 flow [2024-06-28 03:59:54,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:54,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:54,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:54,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:59:54,568 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:54,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:54,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1705516942, now seen corresponding path program 5 times [2024-06-28 03:59:54,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:54,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131807591] [2024-06-28 03:59:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:54,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:57,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:57,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131807591] [2024-06-28 03:59:57,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131807591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:57,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:57,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:57,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454958815] [2024-06-28 03:59:57,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:57,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:57,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:57,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 03:59:57,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 315 transitions, 4524 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:57,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:57,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 03:59:57,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:59,064 INFO L124 PetriNetUnfolderBase]: 3210/4856 cut-off events. [2024-06-28 03:59:59,064 INFO L125 PetriNetUnfolderBase]: For 327127/327270 co-relation queries the response was YES. [2024-06-28 03:59:59,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47552 conditions, 4856 events. 3210/4856 cut-off events. For 327127/327270 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 25104 event pairs, 625 based on Foata normal form. 52/4849 useless extension candidates. Maximal degree in co-relation 47441. Up to 4421 conditions per place. [2024-06-28 03:59:59,115 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 258 selfloop transitions, 51 changer transitions 0/360 dead transitions. [2024-06-28 03:59:59,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 360 transitions, 5549 flow [2024-06-28 03:59:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:59:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:59:59,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:59:59,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 03:59:59,116 INFO L175 Difference]: Start difference. First operand has 216 places, 315 transitions, 4524 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:59:59,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 360 transitions, 5549 flow [2024-06-28 03:59:59,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 360 transitions, 5449 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:59,451 INFO L231 Difference]: Finished difference. Result has 219 places, 316 transitions, 4563 flow [2024-06-28 03:59:59,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4424, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4563, PETRI_PLACES=219, PETRI_TRANSITIONS=316} [2024-06-28 03:59:59,452 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 176 predicate places. [2024-06-28 03:59:59,452 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 316 transitions, 4563 flow [2024-06-28 03:59:59,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:59,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:59,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:59,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:59:59,453 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:59,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:59,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1933595846, now seen corresponding path program 9 times [2024-06-28 03:59:59,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:59,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77568746] [2024-06-28 03:59:59,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:59,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:01,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:01,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77568746] [2024-06-28 04:00:01,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77568746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:01,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:01,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:01,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901233119] [2024-06-28 04:00:01,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:01,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:01,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:01,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:01,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:01,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:00:01,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 316 transitions, 4563 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:01,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:01,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:00:01,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:03,649 INFO L124 PetriNetUnfolderBase]: 3339/5021 cut-off events. [2024-06-28 04:00:03,649 INFO L125 PetriNetUnfolderBase]: For 318879/318928 co-relation queries the response was YES. [2024-06-28 04:00:03,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48840 conditions, 5021 events. 3339/5021 cut-off events. For 318879/318928 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 25673 event pairs, 694 based on Foata normal form. 40/5057 useless extension candidates. Maximal degree in co-relation 48727. Up to 4772 conditions per place. [2024-06-28 04:00:03,704 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 311 selfloop transitions, 55 changer transitions 0/369 dead transitions. [2024-06-28 04:00:03,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 369 transitions, 5571 flow [2024-06-28 04:00:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:00:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:00:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 04:00:03,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37012987012987014 [2024-06-28 04:00:03,705 INFO L175 Difference]: Start difference. First operand has 219 places, 316 transitions, 4563 flow. Second operand 11 states and 171 transitions. [2024-06-28 04:00:03,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 369 transitions, 5571 flow [2024-06-28 04:00:04,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 369 transitions, 5426 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 04:00:04,040 INFO L231 Difference]: Finished difference. Result has 223 places, 323 transitions, 4693 flow [2024-06-28 04:00:04,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4418, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4693, PETRI_PLACES=223, PETRI_TRANSITIONS=323} [2024-06-28 04:00:04,041 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-28 04:00:04,041 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 323 transitions, 4693 flow [2024-06-28 04:00:04,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:04,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:04,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:04,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:00:04,041 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:04,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:04,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1705694696, now seen corresponding path program 10 times [2024-06-28 04:00:04,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:04,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289680674] [2024-06-28 04:00:04,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:04,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:06,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:06,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289680674] [2024-06-28 04:00:06,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289680674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:06,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:06,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:06,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857526809] [2024-06-28 04:00:06,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:06,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:06,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:06,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:06,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:06,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:00:06,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 323 transitions, 4693 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:06,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:06,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:00:06,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:08,740 INFO L124 PetriNetUnfolderBase]: 3324/5000 cut-off events. [2024-06-28 04:00:08,741 INFO L125 PetriNetUnfolderBase]: For 322464/322513 co-relation queries the response was YES. [2024-06-28 04:00:08,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48475 conditions, 5000 events. 3324/5000 cut-off events. For 322464/322513 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 25581 event pairs, 692 based on Foata normal form. 40/5036 useless extension candidates. Maximal degree in co-relation 48361. Up to 4751 conditions per place. [2024-06-28 04:00:08,793 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 308 selfloop transitions, 50 changer transitions 0/361 dead transitions. [2024-06-28 04:00:08,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 361 transitions, 5562 flow [2024-06-28 04:00:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 04:00:08,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862433862433862 [2024-06-28 04:00:08,801 INFO L175 Difference]: Start difference. First operand has 223 places, 323 transitions, 4693 flow. Second operand 9 states and 146 transitions. [2024-06-28 04:00:08,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 361 transitions, 5562 flow [2024-06-28 04:00:09,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 361 transitions, 5289 flow, removed 87 selfloop flow, removed 8 redundant places. [2024-06-28 04:00:09,182 INFO L231 Difference]: Finished difference. Result has 224 places, 325 transitions, 4582 flow [2024-06-28 04:00:09,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4440, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4582, PETRI_PLACES=224, PETRI_TRANSITIONS=325} [2024-06-28 04:00:09,183 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 181 predicate places. [2024-06-28 04:00:09,183 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 325 transitions, 4582 flow [2024-06-28 04:00:09,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:09,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:09,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:09,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 04:00:09,183 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:09,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1705701640, now seen corresponding path program 3 times [2024-06-28 04:00:09,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:09,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966568463] [2024-06-28 04:00:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:09,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:12,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:12,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966568463] [2024-06-28 04:00:12,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966568463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:12,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:12,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:12,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127227551] [2024-06-28 04:00:12,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:12,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:12,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:12,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:12,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:12,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:00:12,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 325 transitions, 4582 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:12,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:12,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:00:12,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:14,038 INFO L124 PetriNetUnfolderBase]: 3344/5032 cut-off events. [2024-06-28 04:00:14,039 INFO L125 PetriNetUnfolderBase]: For 330031/330080 co-relation queries the response was YES. [2024-06-28 04:00:14,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48418 conditions, 5032 events. 3344/5032 cut-off events. For 330031/330080 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 25764 event pairs, 690 based on Foata normal form. 38/5066 useless extension candidates. Maximal degree in co-relation 48305. Up to 4833 conditions per place. [2024-06-28 04:00:14,093 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 316 selfloop transitions, 38 changer transitions 0/357 dead transitions. [2024-06-28 04:00:14,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 357 transitions, 5416 flow [2024-06-28 04:00:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:14,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 04:00:14,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:00:14,094 INFO L175 Difference]: Start difference. First operand has 224 places, 325 transitions, 4582 flow. Second operand 8 states and 130 transitions. [2024-06-28 04:00:14,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 357 transitions, 5416 flow [2024-06-28 04:00:14,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 357 transitions, 5283 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 04:00:14,476 INFO L231 Difference]: Finished difference. Result has 225 places, 327 transitions, 4578 flow [2024-06-28 04:00:14,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4578, PETRI_PLACES=225, PETRI_TRANSITIONS=327} [2024-06-28 04:00:14,477 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 182 predicate places. [2024-06-28 04:00:14,477 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 327 transitions, 4578 flow [2024-06-28 04:00:14,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:14,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:14,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:14,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 04:00:14,477 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:14,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:14,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1942173670, now seen corresponding path program 4 times [2024-06-28 04:00:14,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:14,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209110936] [2024-06-28 04:00:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:14,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:17,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:17,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209110936] [2024-06-28 04:00:17,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209110936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:17,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:17,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:17,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976382763] [2024-06-28 04:00:17,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:17,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:17,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:17,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:17,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:17,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:00:17,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 327 transitions, 4578 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:17,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:17,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:00:17,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:18,916 INFO L124 PetriNetUnfolderBase]: 3336/5020 cut-off events. [2024-06-28 04:00:18,917 INFO L125 PetriNetUnfolderBase]: For 335538/335587 co-relation queries the response was YES. [2024-06-28 04:00:18,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48413 conditions, 5020 events. 3336/5020 cut-off events. For 335538/335587 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 25672 event pairs, 637 based on Foata normal form. 38/5054 useless extension candidates. Maximal degree in co-relation 48299. Up to 4727 conditions per place. [2024-06-28 04:00:18,975 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 312 selfloop transitions, 45 changer transitions 0/360 dead transitions. [2024-06-28 04:00:18,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 360 transitions, 5424 flow [2024-06-28 04:00:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 04:00:18,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:00:18,976 INFO L175 Difference]: Start difference. First operand has 225 places, 327 transitions, 4578 flow. Second operand 8 states and 128 transitions. [2024-06-28 04:00:18,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 360 transitions, 5424 flow [2024-06-28 04:00:19,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 360 transitions, 5317 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:19,365 INFO L231 Difference]: Finished difference. Result has 227 places, 329 transitions, 4618 flow [2024-06-28 04:00:19,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4471, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4618, PETRI_PLACES=227, PETRI_TRANSITIONS=329} [2024-06-28 04:00:19,365 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 184 predicate places. [2024-06-28 04:00:19,365 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 329 transitions, 4618 flow [2024-06-28 04:00:19,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:19,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:19,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:19,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 04:00:19,366 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:19,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1396307639, now seen corresponding path program 1 times [2024-06-28 04:00:19,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:19,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127474602] [2024-06-28 04:00:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:19,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:20,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:20,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127474602] [2024-06-28 04:00:20,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127474602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:20,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:20,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:00:20,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228539321] [2024-06-28 04:00:20,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:20,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:00:20,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:20,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:00:20,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:00:20,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:00:20,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 329 transitions, 4618 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:20,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:20,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:00:20,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:22,151 INFO L124 PetriNetUnfolderBase]: 3224/4838 cut-off events. [2024-06-28 04:00:22,151 INFO L125 PetriNetUnfolderBase]: For 333970/334019 co-relation queries the response was YES. [2024-06-28 04:00:22,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47122 conditions, 4838 events. 3224/4838 cut-off events. For 333970/334019 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 24442 event pairs, 672 based on Foata normal form. 38/4872 useless extension candidates. Maximal degree in co-relation 47007. Up to 4761 conditions per place. [2024-06-28 04:00:22,199 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 311 selfloop transitions, 25 changer transitions 0/339 dead transitions. [2024-06-28 04:00:22,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 339 transitions, 5318 flow [2024-06-28 04:00:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:00:22,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:00:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-28 04:00:22,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-28 04:00:22,200 INFO L175 Difference]: Start difference. First operand has 227 places, 329 transitions, 4618 flow. Second operand 5 states and 82 transitions. [2024-06-28 04:00:22,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 339 transitions, 5318 flow [2024-06-28 04:00:22,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 339 transitions, 5193 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:22,666 INFO L231 Difference]: Finished difference. Result has 226 places, 329 transitions, 4555 flow [2024-06-28 04:00:22,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4493, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4555, PETRI_PLACES=226, PETRI_TRANSITIONS=329} [2024-06-28 04:00:22,666 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 183 predicate places. [2024-06-28 04:00:22,666 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 329 transitions, 4555 flow [2024-06-28 04:00:22,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:22,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:22,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:22,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 04:00:22,667 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:22,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:22,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1198204435, now seen corresponding path program 1 times [2024-06-28 04:00:22,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:22,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972078539] [2024-06-28 04:00:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:22,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:25,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:25,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:25,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972078539] [2024-06-28 04:00:25,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972078539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:25,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:25,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:00:25,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280249979] [2024-06-28 04:00:25,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:25,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:00:25,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:00:25,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:00:25,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:00:25,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 329 transitions, 4555 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:25,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:25,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:00:25,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:28,126 INFO L124 PetriNetUnfolderBase]: 3485/5265 cut-off events. [2024-06-28 04:00:28,126 INFO L125 PetriNetUnfolderBase]: For 395920/395942 co-relation queries the response was YES. [2024-06-28 04:00:28,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51552 conditions, 5265 events. 3485/5265 cut-off events. For 395920/395942 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 27272 event pairs, 480 based on Foata normal form. 38/5301 useless extension candidates. Maximal degree in co-relation 51436. Up to 3771 conditions per place. [2024-06-28 04:00:28,180 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 303 selfloop transitions, 105 changer transitions 0/411 dead transitions. [2024-06-28 04:00:28,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 411 transitions, 6207 flow [2024-06-28 04:00:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:00:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:00:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 04:00:28,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-28 04:00:28,181 INFO L175 Difference]: Start difference. First operand has 226 places, 329 transitions, 4555 flow. Second operand 10 states and 184 transitions. [2024-06-28 04:00:28,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 411 transitions, 6207 flow [2024-06-28 04:00:28,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 411 transitions, 6126 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:28,694 INFO L231 Difference]: Finished difference. Result has 234 places, 339 transitions, 4997 flow [2024-06-28 04:00:28,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4474, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4997, PETRI_PLACES=234, PETRI_TRANSITIONS=339} [2024-06-28 04:00:28,695 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 191 predicate places. [2024-06-28 04:00:28,695 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 339 transitions, 4997 flow [2024-06-28 04:00:28,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:28,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:28,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:28,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 04:00:28,695 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:28,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:28,696 INFO L85 PathProgramCache]: Analyzing trace with hash -739600143, now seen corresponding path program 2 times [2024-06-28 04:00:28,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:28,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418759259] [2024-06-28 04:00:28,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:28,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:32,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:32,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418759259] [2024-06-28 04:00:32,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418759259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:32,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:32,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:00:32,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671055196] [2024-06-28 04:00:32,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:32,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:00:32,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:32,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:00:32,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:00:32,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:00:32,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 339 transitions, 4997 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:32,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:32,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:00:32,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:34,554 INFO L124 PetriNetUnfolderBase]: 3593/5445 cut-off events. [2024-06-28 04:00:34,554 INFO L125 PetriNetUnfolderBase]: For 424092/424114 co-relation queries the response was YES. [2024-06-28 04:00:34,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54150 conditions, 5445 events. 3593/5445 cut-off events. For 424092/424114 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 28623 event pairs, 690 based on Foata normal form. 46/5489 useless extension candidates. Maximal degree in co-relation 54032. Up to 4601 conditions per place. [2024-06-28 04:00:34,619 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 290 selfloop transitions, 107 changer transitions 0/400 dead transitions. [2024-06-28 04:00:34,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 400 transitions, 6080 flow [2024-06-28 04:00:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:00:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:00:34,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 04:00:34,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:00:34,621 INFO L175 Difference]: Start difference. First operand has 234 places, 339 transitions, 4997 flow. Second operand 10 states and 180 transitions. [2024-06-28 04:00:34,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 400 transitions, 6080 flow [2024-06-28 04:00:35,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 400 transitions, 5954 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:35,288 INFO L231 Difference]: Finished difference. Result has 240 places, 341 transitions, 5167 flow [2024-06-28 04:00:35,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4873, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5167, PETRI_PLACES=240, PETRI_TRANSITIONS=341} [2024-06-28 04:00:35,288 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 197 predicate places. [2024-06-28 04:00:35,288 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 341 transitions, 5167 flow [2024-06-28 04:00:35,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:35,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:35,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:35,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 04:00:35,289 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:35,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:35,289 INFO L85 PathProgramCache]: Analyzing trace with hash -739603863, now seen corresponding path program 3 times [2024-06-28 04:00:35,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:35,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506705094] [2024-06-28 04:00:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:39,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:39,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506705094] [2024-06-28 04:00:39,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506705094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:39,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:39,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:00:39,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115498602] [2024-06-28 04:00:39,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:39,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:00:39,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:39,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:00:39,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:00:39,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:00:39,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 341 transitions, 5167 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:39,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:39,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:00:39,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:41,166 INFO L124 PetriNetUnfolderBase]: 3661/5561 cut-off events. [2024-06-28 04:00:41,167 INFO L125 PetriNetUnfolderBase]: For 432252/432274 co-relation queries the response was YES. [2024-06-28 04:00:41,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55582 conditions, 5561 events. 3661/5561 cut-off events. For 432252/432274 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 29505 event pairs, 690 based on Foata normal form. 38/5597 useless extension candidates. Maximal degree in co-relation 55462. Up to 4583 conditions per place. [2024-06-28 04:00:41,232 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 297 selfloop transitions, 107 changer transitions 0/407 dead transitions. [2024-06-28 04:00:41,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 407 transitions, 6320 flow [2024-06-28 04:00:41,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:00:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:00:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 04:00:41,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 04:00:41,234 INFO L175 Difference]: Start difference. First operand has 240 places, 341 transitions, 5167 flow. Second operand 10 states and 183 transitions. [2024-06-28 04:00:41,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 407 transitions, 6320 flow [2024-06-28 04:00:41,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 407 transitions, 6069 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 04:00:41,945 INFO L231 Difference]: Finished difference. Result has 243 places, 344 transitions, 5235 flow [2024-06-28 04:00:41,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4916, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5235, PETRI_PLACES=243, PETRI_TRANSITIONS=344} [2024-06-28 04:00:41,945 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 200 predicate places. [2024-06-28 04:00:41,945 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 344 transitions, 5235 flow [2024-06-28 04:00:41,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:41,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:41,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:41,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 04:00:41,946 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:41,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:41,946 INFO L85 PathProgramCache]: Analyzing trace with hash -652912053, now seen corresponding path program 4 times [2024-06-28 04:00:41,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:41,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187028656] [2024-06-28 04:00:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:41,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:45,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:45,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187028656] [2024-06-28 04:00:45,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187028656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:45,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:45,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:00:45,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488471253] [2024-06-28 04:00:45,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:45,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:00:45,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:45,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:00:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:00:45,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:00:45,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 344 transitions, 5235 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:45,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:45,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:00:45,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:47,166 INFO L124 PetriNetUnfolderBase]: 3853/5879 cut-off events. [2024-06-28 04:00:47,166 INFO L125 PetriNetUnfolderBase]: For 475999/476019 co-relation queries the response was YES. [2024-06-28 04:00:47,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58812 conditions, 5879 events. 3853/5879 cut-off events. For 475999/476019 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 31862 event pairs, 753 based on Foata normal form. 36/5913 useless extension candidates. Maximal degree in co-relation 58690. Up to 5308 conditions per place. [2024-06-28 04:00:47,228 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 371 selfloop transitions, 33 changer transitions 0/407 dead transitions. [2024-06-28 04:00:47,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 407 transitions, 6600 flow [2024-06-28 04:00:47,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:00:47,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:00:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 04:00:47,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-28 04:00:47,229 INFO L175 Difference]: Start difference. First operand has 243 places, 344 transitions, 5235 flow. Second operand 10 states and 172 transitions. [2024-06-28 04:00:47,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 407 transitions, 6600 flow [2024-06-28 04:00:47,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 407 transitions, 6435 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:47,944 INFO L231 Difference]: Finished difference. Result has 248 places, 348 transitions, 5274 flow [2024-06-28 04:00:47,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5070, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5274, PETRI_PLACES=248, PETRI_TRANSITIONS=348} [2024-06-28 04:00:47,944 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-06-28 04:00:47,945 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 348 transitions, 5274 flow [2024-06-28 04:00:47,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:47,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:47,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:47,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 04:00:47,945 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:47,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:47,945 INFO L85 PathProgramCache]: Analyzing trace with hash -652764183, now seen corresponding path program 5 times [2024-06-28 04:00:47,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:47,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960628543] [2024-06-28 04:00:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:47,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:51,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:51,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960628543] [2024-06-28 04:00:51,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960628543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:51,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:51,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:00:51,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555023007] [2024-06-28 04:00:51,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:51,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:00:51,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:51,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:00:51,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:00:51,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:00:51,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 348 transitions, 5274 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:51,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:51,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:00:51,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:53,930 INFO L124 PetriNetUnfolderBase]: 3941/6027 cut-off events. [2024-06-28 04:00:53,930 INFO L125 PetriNetUnfolderBase]: For 499576/499596 co-relation queries the response was YES. [2024-06-28 04:00:53,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60085 conditions, 6027 events. 3941/6027 cut-off events. For 499576/499596 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32971 event pairs, 809 based on Foata normal form. 40/6065 useless extension candidates. Maximal degree in co-relation 59960. Up to 5727 conditions per place. [2024-06-28 04:00:53,998 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 372 selfloop transitions, 27 changer transitions 0/402 dead transitions. [2024-06-28 04:00:53,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 402 transitions, 6306 flow [2024-06-28 04:00:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:00:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:00:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 04:00:54,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-28 04:00:54,000 INFO L175 Difference]: Start difference. First operand has 248 places, 348 transitions, 5274 flow. Second operand 10 states and 164 transitions. [2024-06-28 04:00:54,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 402 transitions, 6306 flow [2024-06-28 04:00:54,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 402 transitions, 6250 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 04:00:54,856 INFO L231 Difference]: Finished difference. Result has 252 places, 349 transitions, 5319 flow [2024-06-28 04:00:54,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5218, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5319, PETRI_PLACES=252, PETRI_TRANSITIONS=349} [2024-06-28 04:00:54,857 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 209 predicate places. [2024-06-28 04:00:54,857 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 349 transitions, 5319 flow [2024-06-28 04:00:54,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:54,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:54,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:54,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 04:00:54,857 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:00:54,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:54,858 INFO L85 PathProgramCache]: Analyzing trace with hash -652908333, now seen corresponding path program 6 times [2024-06-28 04:00:54,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:54,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434501755] [2024-06-28 04:00:54,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:54,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:58,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:58,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434501755] [2024-06-28 04:00:58,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434501755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:58,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:58,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:00:58,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119323694] [2024-06-28 04:00:58,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:58,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:00:58,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:58,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:00:58,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:00:58,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:00:58,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 349 transitions, 5319 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:58,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:58,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:00:58,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:00,575 INFO L124 PetriNetUnfolderBase]: 3973/6087 cut-off events. [2024-06-28 04:01:00,575 INFO L125 PetriNetUnfolderBase]: For 504438/504458 co-relation queries the response was YES. [2024-06-28 04:01:00,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60311 conditions, 6087 events. 3973/6087 cut-off events. For 504438/504458 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 33506 event pairs, 807 based on Foata normal form. 40/6125 useless extension candidates. Maximal degree in co-relation 60184. Up to 5748 conditions per place. [2024-06-28 04:01:00,640 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 370 selfloop transitions, 31 changer transitions 0/404 dead transitions. [2024-06-28 04:01:00,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 404 transitions, 6363 flow [2024-06-28 04:01:00,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:01:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:01:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 04:01:00,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976190476190476 [2024-06-28 04:01:00,642 INFO L175 Difference]: Start difference. First operand has 252 places, 349 transitions, 5319 flow. Second operand 10 states and 167 transitions. [2024-06-28 04:01:00,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 404 transitions, 6363 flow [2024-06-28 04:01:01,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 404 transitions, 6298 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 04:01:01,409 INFO L231 Difference]: Finished difference. Result has 254 places, 350 transitions, 5365 flow [2024-06-28 04:01:01,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5254, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5365, PETRI_PLACES=254, PETRI_TRANSITIONS=350} [2024-06-28 04:01:01,410 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 211 predicate places. [2024-06-28 04:01:01,410 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 350 transitions, 5365 flow [2024-06-28 04:01:01,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:01,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:01,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:01,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 04:01:01,410 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:01,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:01,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1368135067, now seen corresponding path program 1 times [2024-06-28 04:01:01,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:01,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407733993] [2024-06-28 04:01:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:04,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:04,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407733993] [2024-06-28 04:01:04,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407733993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:04,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:04,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:04,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570872377] [2024-06-28 04:01:04,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:04,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:04,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:04,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:04,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:04,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:01:04,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 350 transitions, 5365 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:04,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:04,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:01:04,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:06,993 INFO L124 PetriNetUnfolderBase]: 3957/6065 cut-off events. [2024-06-28 04:01:06,993 INFO L125 PetriNetUnfolderBase]: For 493623/493645 co-relation queries the response was YES. [2024-06-28 04:01:07,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59882 conditions, 6065 events. 3957/6065 cut-off events. For 493623/493645 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 33391 event pairs, 869 based on Foata normal form. 28/6091 useless extension candidates. Maximal degree in co-relation 59754. Up to 5811 conditions per place. [2024-06-28 04:01:07,061 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 341 selfloop transitions, 45 changer transitions 0/389 dead transitions. [2024-06-28 04:01:07,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 389 transitions, 6277 flow [2024-06-28 04:01:07,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 04:01:07,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941798941798942 [2024-06-28 04:01:07,062 INFO L175 Difference]: Start difference. First operand has 254 places, 350 transitions, 5365 flow. Second operand 9 states and 149 transitions. [2024-06-28 04:01:07,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 389 transitions, 6277 flow [2024-06-28 04:01:07,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 389 transitions, 6202 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 04:01:07,771 INFO L231 Difference]: Finished difference. Result has 255 places, 351 transitions, 5425 flow [2024-06-28 04:01:07,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5290, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5425, PETRI_PLACES=255, PETRI_TRANSITIONS=351} [2024-06-28 04:01:07,771 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 212 predicate places. [2024-06-28 04:01:07,771 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 351 transitions, 5425 flow [2024-06-28 04:01:07,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:07,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:07,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:07,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 04:01:07,772 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:07,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash 397143177, now seen corresponding path program 2 times [2024-06-28 04:01:07,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:07,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297912527] [2024-06-28 04:01:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:07,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:10,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:10,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297912527] [2024-06-28 04:01:10,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297912527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:10,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:10,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:10,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515193474] [2024-06-28 04:01:10,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:10,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:10,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:10,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:10,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:10,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:01:10,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 351 transitions, 5425 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:10,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:10,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:01:10,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:12,812 INFO L124 PetriNetUnfolderBase]: 3977/6097 cut-off events. [2024-06-28 04:01:12,812 INFO L125 PetriNetUnfolderBase]: For 502843/502865 co-relation queries the response was YES. [2024-06-28 04:01:12,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60433 conditions, 6097 events. 3977/6097 cut-off events. For 502843/502865 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 33709 event pairs, 867 based on Foata normal form. 24/6119 useless extension candidates. Maximal degree in co-relation 60304. Up to 5870 conditions per place. [2024-06-28 04:01:12,894 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 349 selfloop transitions, 40 changer transitions 0/392 dead transitions. [2024-06-28 04:01:12,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 392 transitions, 6375 flow [2024-06-28 04:01:12,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 04:01:12,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-06-28 04:01:12,895 INFO L175 Difference]: Start difference. First operand has 255 places, 351 transitions, 5425 flow. Second operand 9 states and 148 transitions. [2024-06-28 04:01:12,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 392 transitions, 6375 flow [2024-06-28 04:01:13,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 392 transitions, 6240 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:13,772 INFO L231 Difference]: Finished difference. Result has 257 places, 353 transitions, 5445 flow [2024-06-28 04:01:13,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5290, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5445, PETRI_PLACES=257, PETRI_TRANSITIONS=353} [2024-06-28 04:01:13,772 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 214 predicate places. [2024-06-28 04:01:13,772 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 353 transitions, 5445 flow [2024-06-28 04:01:13,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:13,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:13,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:13,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 04:01:13,773 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:13,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1368342829, now seen corresponding path program 7 times [2024-06-28 04:01:13,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001484793] [2024-06-28 04:01:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:13,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:16,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:16,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001484793] [2024-06-28 04:01:16,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001484793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:16,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:16,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:16,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598355235] [2024-06-28 04:01:16,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:16,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:16,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:01:16,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 353 transitions, 5445 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:16,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:16,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:01:16,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:19,220 INFO L124 PetriNetUnfolderBase]: 4133/6361 cut-off events. [2024-06-28 04:01:19,221 INFO L125 PetriNetUnfolderBase]: For 568843/568865 co-relation queries the response was YES. [2024-06-28 04:01:19,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62148 conditions, 6361 events. 4133/6361 cut-off events. For 568843/568865 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 35594 event pairs, 909 based on Foata normal form. 56/6415 useless extension candidates. Maximal degree in co-relation 62018. Up to 5786 conditions per place. [2024-06-28 04:01:19,290 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 348 selfloop transitions, 52 changer transitions 0/403 dead transitions. [2024-06-28 04:01:19,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 403 transitions, 6492 flow [2024-06-28 04:01:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:01:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:01:19,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 04:01:19,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:01:19,291 INFO L175 Difference]: Start difference. First operand has 257 places, 353 transitions, 5445 flow. Second operand 10 states and 168 transitions. [2024-06-28 04:01:19,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 403 transitions, 6492 flow [2024-06-28 04:01:20,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 403 transitions, 6363 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:20,038 INFO L231 Difference]: Finished difference. Result has 260 places, 355 transitions, 5507 flow [2024-06-28 04:01:20,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5316, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5507, PETRI_PLACES=260, PETRI_TRANSITIONS=355} [2024-06-28 04:01:20,038 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 217 predicate places. [2024-06-28 04:01:20,039 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 355 transitions, 5507 flow [2024-06-28 04:01:20,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:20,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:20,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:20,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 04:01:20,039 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:20,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:20,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1473018075, now seen corresponding path program 3 times [2024-06-28 04:01:20,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:20,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250876786] [2024-06-28 04:01:20,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:20,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:22,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:22,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:22,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250876786] [2024-06-28 04:01:22,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250876786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:22,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:22,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:22,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320023198] [2024-06-28 04:01:22,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:22,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:22,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:22,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:22,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:01:22,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 355 transitions, 5507 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:22,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:22,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:01:22,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:25,002 INFO L124 PetriNetUnfolderBase]: 4125/6349 cut-off events. [2024-06-28 04:01:25,003 INFO L125 PetriNetUnfolderBase]: For 533245/533267 co-relation queries the response was YES. [2024-06-28 04:01:25,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62053 conditions, 6349 events. 4125/6349 cut-off events. For 533245/533267 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 35632 event pairs, 909 based on Foata normal form. 24/6371 useless extension candidates. Maximal degree in co-relation 61922. Up to 6084 conditions per place. [2024-06-28 04:01:25,088 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 343 selfloop transitions, 49 changer transitions 0/395 dead transitions. [2024-06-28 04:01:25,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 395 transitions, 6443 flow [2024-06-28 04:01:25,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:25,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:25,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 04:01:25,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2024-06-28 04:01:25,090 INFO L175 Difference]: Start difference. First operand has 260 places, 355 transitions, 5507 flow. Second operand 9 states and 152 transitions. [2024-06-28 04:01:25,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 395 transitions, 6443 flow [2024-06-28 04:01:25,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 395 transitions, 6321 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 04:01:25,901 INFO L231 Difference]: Finished difference. Result has 261 places, 356 transitions, 5532 flow [2024-06-28 04:01:25,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5385, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5532, PETRI_PLACES=261, PETRI_TRANSITIONS=356} [2024-06-28 04:01:25,901 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 218 predicate places. [2024-06-28 04:01:25,901 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 356 transitions, 5532 flow [2024-06-28 04:01:25,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:25,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:25,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:25,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 04:01:25,902 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:25,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:25,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1473012123, now seen corresponding path program 8 times [2024-06-28 04:01:25,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:25,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642538726] [2024-06-28 04:01:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:25,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:28,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:28,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642538726] [2024-06-28 04:01:28,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642538726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:28,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:28,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:28,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123948348] [2024-06-28 04:01:28,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:28,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:28,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:28,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:01:28,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 356 transitions, 5532 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:28,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:28,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:01:28,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:30,818 INFO L124 PetriNetUnfolderBase]: 4213/6497 cut-off events. [2024-06-28 04:01:30,818 INFO L125 PetriNetUnfolderBase]: For 574763/574785 co-relation queries the response was YES. [2024-06-28 04:01:30,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63162 conditions, 6497 events. 4213/6497 cut-off events. For 574763/574785 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 36739 event pairs, 847 based on Foata normal form. 40/6535 useless extension candidates. Maximal degree in co-relation 63030. Up to 5585 conditions per place. [2024-06-28 04:01:30,902 INFO L140 encePairwiseOnDemand]: 26/42 looper letters, 299 selfloop transitions, 120 changer transitions 0/422 dead transitions. [2024-06-28 04:01:30,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 422 transitions, 6895 flow [2024-06-28 04:01:30,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:01:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:01:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-28 04:01:30,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:01:30,903 INFO L175 Difference]: Start difference. First operand has 261 places, 356 transitions, 5532 flow. Second operand 11 states and 198 transitions. [2024-06-28 04:01:30,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 422 transitions, 6895 flow [2024-06-28 04:01:31,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 422 transitions, 6750 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:31,815 INFO L231 Difference]: Finished difference. Result has 265 places, 357 transitions, 5675 flow [2024-06-28 04:01:31,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5387, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5675, PETRI_PLACES=265, PETRI_TRANSITIONS=357} [2024-06-28 04:01:31,815 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-28 04:01:31,815 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 357 transitions, 5675 flow [2024-06-28 04:01:31,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:31,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:31,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:31,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 04:01:31,816 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:31,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:31,816 INFO L85 PathProgramCache]: Analyzing trace with hash 391417725, now seen corresponding path program 9 times [2024-06-28 04:01:31,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:31,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065491899] [2024-06-28 04:01:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:31,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:34,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:34,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065491899] [2024-06-28 04:01:34,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065491899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:34,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:34,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:34,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33362274] [2024-06-28 04:01:34,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:34,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:34,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:34,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:34,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:01:34,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 357 transitions, 5675 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:34,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:34,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:01:34,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:36,918 INFO L124 PetriNetUnfolderBase]: 4501/6985 cut-off events. [2024-06-28 04:01:36,919 INFO L125 PetriNetUnfolderBase]: For 628340/628362 co-relation queries the response was YES. [2024-06-28 04:01:36,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67998 conditions, 6985 events. 4501/6985 cut-off events. For 628340/628362 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 40601 event pairs, 974 based on Foata normal form. 38/7021 useless extension candidates. Maximal degree in co-relation 67865. Up to 5951 conditions per place. [2024-06-28 04:01:36,997 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 358 selfloop transitions, 61 changer transitions 0/422 dead transitions. [2024-06-28 04:01:36,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 422 transitions, 7135 flow [2024-06-28 04:01:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:01:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:01:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 04:01:36,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-28 04:01:36,998 INFO L175 Difference]: Start difference. First operand has 265 places, 357 transitions, 5675 flow. Second operand 11 states and 186 transitions. [2024-06-28 04:01:36,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 422 transitions, 7135 flow [2024-06-28 04:01:38,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 422 transitions, 6962 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 04:01:38,071 INFO L231 Difference]: Finished difference. Result has 269 places, 362 transitions, 5800 flow [2024-06-28 04:01:38,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5502, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5800, PETRI_PLACES=269, PETRI_TRANSITIONS=362} [2024-06-28 04:01:38,072 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-28 04:01:38,072 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 362 transitions, 5800 flow [2024-06-28 04:01:38,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:38,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:38,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:38,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 04:01:38,072 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:38,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1373849359, now seen corresponding path program 10 times [2024-06-28 04:01:38,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:38,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101461832] [2024-06-28 04:01:38,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:38,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:40,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:40,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101461832] [2024-06-28 04:01:40,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101461832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:40,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:40,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:40,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60204737] [2024-06-28 04:01:40,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:40,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:40,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:40,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:40,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:40,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:01:40,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 362 transitions, 5800 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:40,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:40,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:01:40,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:43,329 INFO L124 PetriNetUnfolderBase]: 4513/7013 cut-off events. [2024-06-28 04:01:43,329 INFO L125 PetriNetUnfolderBase]: For 640745/640767 co-relation queries the response was YES. [2024-06-28 04:01:43,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67033 conditions, 7013 events. 4513/7013 cut-off events. For 640745/640767 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 40918 event pairs, 1005 based on Foata normal form. 52/7063 useless extension candidates. Maximal degree in co-relation 66898. Up to 6272 conditions per place. [2024-06-28 04:01:43,425 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 350 selfloop transitions, 66 changer transitions 0/419 dead transitions. [2024-06-28 04:01:43,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 419 transitions, 6923 flow [2024-06-28 04:01:43,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:01:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:01:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 04:01:43,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:01:43,426 INFO L175 Difference]: Start difference. First operand has 269 places, 362 transitions, 5800 flow. Second operand 11 states and 187 transitions. [2024-06-28 04:01:43,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 419 transitions, 6923 flow [2024-06-28 04:01:44,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 419 transitions, 6790 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:44,496 INFO L231 Difference]: Finished difference. Result has 273 places, 364 transitions, 5903 flow [2024-06-28 04:01:44,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5683, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5903, PETRI_PLACES=273, PETRI_TRANSITIONS=364} [2024-06-28 04:01:44,496 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 230 predicate places. [2024-06-28 04:01:44,496 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 364 transitions, 5903 flow [2024-06-28 04:01:44,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:44,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:44,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:44,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 04:01:44,497 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:44,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:44,497 INFO L85 PathProgramCache]: Analyzing trace with hash -841433529, now seen corresponding path program 4 times [2024-06-28 04:01:44,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:44,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097313886] [2024-06-28 04:01:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:44,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:47,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:47,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097313886] [2024-06-28 04:01:47,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097313886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:47,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:47,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:47,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940727343] [2024-06-28 04:01:47,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:47,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:47,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:47,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:47,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:47,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:01:47,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 364 transitions, 5903 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:47,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:47,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:01:47,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:50,025 INFO L124 PetriNetUnfolderBase]: 4553/7077 cut-off events. [2024-06-28 04:01:50,025 INFO L125 PetriNetUnfolderBase]: For 618139/618188 co-relation queries the response was YES. [2024-06-28 04:01:50,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67995 conditions, 7077 events. 4553/7077 cut-off events. For 618139/618188 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 41461 event pairs, 1031 based on Foata normal form. 42/7115 useless extension candidates. Maximal degree in co-relation 67858. Up to 6823 conditions per place. [2024-06-28 04:01:50,111 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 352 selfloop transitions, 48 changer transitions 0/403 dead transitions. [2024-06-28 04:01:50,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 403 transitions, 6925 flow [2024-06-28 04:01:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:01:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:01:50,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 04:01:50,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783068783068783 [2024-06-28 04:01:50,113 INFO L175 Difference]: Start difference. First operand has 273 places, 364 transitions, 5903 flow. Second operand 9 states and 143 transitions. [2024-06-28 04:01:50,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 403 transitions, 6925 flow [2024-06-28 04:01:51,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 403 transitions, 6766 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 04:01:51,039 INFO L231 Difference]: Finished difference. Result has 273 places, 367 transitions, 5972 flow [2024-06-28 04:01:51,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5746, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5972, PETRI_PLACES=273, PETRI_TRANSITIONS=367} [2024-06-28 04:01:51,040 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 230 predicate places. [2024-06-28 04:01:51,040 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 367 transitions, 5972 flow [2024-06-28 04:01:51,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:51,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:51,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:51,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 04:01:51,041 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:51,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash -188068939, now seen corresponding path program 11 times [2024-06-28 04:01:51,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:51,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738375067] [2024-06-28 04:01:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:51,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:54,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:54,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738375067] [2024-06-28 04:01:54,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738375067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:54,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:54,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:01:54,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260173177] [2024-06-28 04:01:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:54,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:01:54,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:54,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:01:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:01:54,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:01:54,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 367 transitions, 5972 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:54,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:54,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:01:54,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:56,591 INFO L124 PetriNetUnfolderBase]: 4709/7341 cut-off events. [2024-06-28 04:01:56,591 INFO L125 PetriNetUnfolderBase]: For 672625/672674 co-relation queries the response was YES. [2024-06-28 04:01:56,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69734 conditions, 7341 events. 4709/7341 cut-off events. For 672625/672674 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 43623 event pairs, 1063 based on Foata normal form. 70/7407 useless extension candidates. Maximal degree in co-relation 69596. Up to 6766 conditions per place. [2024-06-28 04:01:56,691 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 357 selfloop transitions, 55 changer transitions 0/415 dead transitions. [2024-06-28 04:01:56,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 415 transitions, 7054 flow [2024-06-28 04:01:56,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:01:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:01:56,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 04:01:56,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-28 04:01:56,693 INFO L175 Difference]: Start difference. First operand has 273 places, 367 transitions, 5972 flow. Second operand 10 states and 162 transitions. [2024-06-28 04:01:56,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 415 transitions, 7054 flow [2024-06-28 04:01:57,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 415 transitions, 6857 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 04:01:57,941 INFO L231 Difference]: Finished difference. Result has 276 places, 369 transitions, 5984 flow [2024-06-28 04:01:57,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5775, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5984, PETRI_PLACES=276, PETRI_TRANSITIONS=369} [2024-06-28 04:01:57,942 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 233 predicate places. [2024-06-28 04:01:57,942 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 369 transitions, 5984 flow [2024-06-28 04:01:57,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:57,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:57,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:57,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 04:01:57,943 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:01:57,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:57,944 INFO L85 PathProgramCache]: Analyzing trace with hash -187853737, now seen corresponding path program 5 times [2024-06-28 04:01:57,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:57,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269487246] [2024-06-28 04:01:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:57,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:01,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:01,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269487246] [2024-06-28 04:02:01,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269487246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:01,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:01,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:01,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113909805] [2024-06-28 04:02:01,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:01,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:01,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:01,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:01,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:01,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:02:01,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 369 transitions, 5984 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:01,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:01,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:02:01,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:03,800 INFO L124 PetriNetUnfolderBase]: 4729/7373 cut-off events. [2024-06-28 04:02:03,800 INFO L125 PetriNetUnfolderBase]: For 633748/633797 co-relation queries the response was YES. [2024-06-28 04:02:03,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69981 conditions, 7373 events. 4729/7373 cut-off events. For 633748/633797 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 43904 event pairs, 1069 based on Foata normal form. 38/7407 useless extension candidates. Maximal degree in co-relation 69842. Up to 7146 conditions per place. [2024-06-28 04:02:03,903 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 363 selfloop transitions, 41 changer transitions 0/407 dead transitions. [2024-06-28 04:02:03,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 407 transitions, 6964 flow [2024-06-28 04:02:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:02:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:02:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 04:02:03,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-06-28 04:02:03,905 INFO L175 Difference]: Start difference. First operand has 276 places, 369 transitions, 5984 flow. Second operand 9 states and 142 transitions. [2024-06-28 04:02:03,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 407 transitions, 6964 flow [2024-06-28 04:02:05,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 407 transitions, 6828 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 04:02:05,118 INFO L231 Difference]: Finished difference. Result has 277 places, 371 transitions, 6013 flow [2024-06-28 04:02:05,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5848, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6013, PETRI_PLACES=277, PETRI_TRANSITIONS=371} [2024-06-28 04:02:05,118 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 234 predicate places. [2024-06-28 04:02:05,118 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 371 transitions, 6013 flow [2024-06-28 04:02:05,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:05,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:05,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:05,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 04:02:05,119 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:05,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:05,119 INFO L85 PathProgramCache]: Analyzing trace with hash -271643877, now seen corresponding path program 12 times [2024-06-28 04:02:05,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:05,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679721016] [2024-06-28 04:02:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:05,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:07,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:07,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679721016] [2024-06-28 04:02:07,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679721016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:07,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:07,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:07,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125442496] [2024-06-28 04:02:07,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:07,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:07,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:07,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:07,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:07,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:02:07,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 371 transitions, 6013 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:07,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:07,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:02:07,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:10,481 INFO L124 PetriNetUnfolderBase]: 4865/7605 cut-off events. [2024-06-28 04:02:10,481 INFO L125 PetriNetUnfolderBase]: For 695466/695515 co-relation queries the response was YES. [2024-06-28 04:02:10,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72240 conditions, 7605 events. 4865/7605 cut-off events. For 695466/695515 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 45650 event pairs, 1075 based on Foata normal form. 50/7651 useless extension candidates. Maximal degree in co-relation 72100. Up to 6260 conditions per place. [2024-06-28 04:02:10,577 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 339 selfloop transitions, 86 changer transitions 0/428 dead transitions. [2024-06-28 04:02:10,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 428 transitions, 7525 flow [2024-06-28 04:02:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:10,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 04:02:10,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:02:10,579 INFO L175 Difference]: Start difference. First operand has 277 places, 371 transitions, 6013 flow. Second operand 10 states and 170 transitions. [2024-06-28 04:02:10,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 428 transitions, 7525 flow [2024-06-28 04:02:11,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 428 transitions, 7388 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 04:02:11,954 INFO L231 Difference]: Finished difference. Result has 281 places, 375 transitions, 6238 flow [2024-06-28 04:02:11,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5876, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6238, PETRI_PLACES=281, PETRI_TRANSITIONS=375} [2024-06-28 04:02:11,955 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 238 predicate places. [2024-06-28 04:02:11,955 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 375 transitions, 6238 flow [2024-06-28 04:02:11,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:11,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:11,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:11,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 04:02:11,955 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:11,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:11,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1337137765, now seen corresponding path program 6 times [2024-06-28 04:02:11,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:11,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267239460] [2024-06-28 04:02:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:11,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:14,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:14,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267239460] [2024-06-28 04:02:14,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267239460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:14,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:14,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:14,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267729047] [2024-06-28 04:02:14,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:14,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:14,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:14,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:14,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:14,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:02:14,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 375 transitions, 6238 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:14,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:14,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:02:14,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:17,364 INFO L124 PetriNetUnfolderBase]: 4877/7625 cut-off events. [2024-06-28 04:02:17,364 INFO L125 PetriNetUnfolderBase]: For 699063/699112 co-relation queries the response was YES. [2024-06-28 04:02:17,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72808 conditions, 7625 events. 4877/7625 cut-off events. For 699063/699112 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 45894 event pairs, 1127 based on Foata normal form. 42/7663 useless extension candidates. Maximal degree in co-relation 72666. Up to 7371 conditions per place. [2024-06-28 04:02:17,474 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 364 selfloop transitions, 47 changer transitions 0/414 dead transitions. [2024-06-28 04:02:17,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 414 transitions, 7296 flow [2024-06-28 04:02:17,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:02:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:02:17,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 04:02:17,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835978835978836 [2024-06-28 04:02:17,475 INFO L175 Difference]: Start difference. First operand has 281 places, 375 transitions, 6238 flow. Second operand 9 states and 145 transitions. [2024-06-28 04:02:17,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 414 transitions, 7296 flow [2024-06-28 04:02:18,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 414 transitions, 7151 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:18,910 INFO L231 Difference]: Finished difference. Result has 284 places, 378 transitions, 6333 flow [2024-06-28 04:02:18,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6101, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6333, PETRI_PLACES=284, PETRI_TRANSITIONS=378} [2024-06-28 04:02:18,910 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 241 predicate places. [2024-06-28 04:02:18,910 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 378 transitions, 6333 flow [2024-06-28 04:02:18,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:18,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:18,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:18,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 04:02:18,911 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:18,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash 77843543, now seen corresponding path program 7 times [2024-06-28 04:02:18,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:18,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623735611] [2024-06-28 04:02:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:21,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:21,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:21,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623735611] [2024-06-28 04:02:21,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623735611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:21,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:21,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:21,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672441563] [2024-06-28 04:02:21,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:21,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:21,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:21,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:02:21,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 378 transitions, 6333 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:21,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:21,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:02:21,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:23,984 INFO L124 PetriNetUnfolderBase]: 4897/7657 cut-off events. [2024-06-28 04:02:23,984 INFO L125 PetriNetUnfolderBase]: For 706978/707027 co-relation queries the response was YES. [2024-06-28 04:02:24,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73410 conditions, 7657 events. 4897/7657 cut-off events. For 706978/707027 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 46027 event pairs, 1032 based on Foata normal form. 38/7691 useless extension candidates. Maximal degree in co-relation 73266. Up to 7336 conditions per place. [2024-06-28 04:02:24,092 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 367 selfloop transitions, 47 changer transitions 0/417 dead transitions. [2024-06-28 04:02:24,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 417 transitions, 7339 flow [2024-06-28 04:02:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:02:24,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:02:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 04:02:24,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-06-28 04:02:24,093 INFO L175 Difference]: Start difference. First operand has 284 places, 378 transitions, 6333 flow. Second operand 9 states and 142 transitions. [2024-06-28 04:02:24,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 417 transitions, 7339 flow [2024-06-28 04:02:25,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 417 transitions, 7144 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 04:02:25,281 INFO L231 Difference]: Finished difference. Result has 286 places, 380 transitions, 6319 flow [2024-06-28 04:02:25,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6138, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6319, PETRI_PLACES=286, PETRI_TRANSITIONS=380} [2024-06-28 04:02:25,282 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 243 predicate places. [2024-06-28 04:02:25,282 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 380 transitions, 6319 flow [2024-06-28 04:02:25,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:25,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:25,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:25,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 04:02:25,282 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:25,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:25,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1331423473, now seen corresponding path program 13 times [2024-06-28 04:02:25,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:25,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176458596] [2024-06-28 04:02:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:25,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:28,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:28,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176458596] [2024-06-28 04:02:28,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176458596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:28,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:28,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:28,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834452183] [2024-06-28 04:02:28,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:28,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:28,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:28,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:28,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:28,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:02:28,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 380 transitions, 6319 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:28,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:28,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:02:28,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:30,857 INFO L124 PetriNetUnfolderBase]: 5025/7860 cut-off events. [2024-06-28 04:02:30,857 INFO L125 PetriNetUnfolderBase]: For 768960/769009 co-relation queries the response was YES. [2024-06-28 04:02:30,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75282 conditions, 7860 events. 5025/7860 cut-off events. For 768960/769009 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 47643 event pairs, 1121 based on Foata normal form. 54/7910 useless extension candidates. Maximal degree in co-relation 75137. Up to 7097 conditions per place. [2024-06-28 04:02:30,945 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 348 selfloop transitions, 107 changer transitions 0/458 dead transitions. [2024-06-28 04:02:30,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 458 transitions, 8240 flow [2024-06-28 04:02:30,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:02:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:02:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 04:02:30,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 04:02:30,947 INFO L175 Difference]: Start difference. First operand has 286 places, 380 transitions, 6319 flow. Second operand 12 states and 203 transitions. [2024-06-28 04:02:30,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 458 transitions, 8240 flow [2024-06-28 04:02:32,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 458 transitions, 8087 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 04:02:32,144 INFO L231 Difference]: Finished difference. Result has 293 places, 395 transitions, 6826 flow [2024-06-28 04:02:32,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6166, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6826, PETRI_PLACES=293, PETRI_TRANSITIONS=395} [2024-06-28 04:02:32,144 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-28 04:02:32,144 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 395 transitions, 6826 flow [2024-06-28 04:02:32,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:32,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:32,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:32,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 04:02:32,145 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:32,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:32,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1337145205, now seen corresponding path program 8 times [2024-06-28 04:02:32,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:32,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407150786] [2024-06-28 04:02:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:32,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:35,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:35,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407150786] [2024-06-28 04:02:35,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407150786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:35,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:35,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:35,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758457710] [2024-06-28 04:02:35,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:35,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:35,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:35,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:35,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:35,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:02:35,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 395 transitions, 6826 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:35,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:35,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:02:35,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:38,386 INFO L124 PetriNetUnfolderBase]: 5017/7848 cut-off events. [2024-06-28 04:02:38,386 INFO L125 PetriNetUnfolderBase]: For 758963/759012 co-relation queries the response was YES. [2024-06-28 04:02:38,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77050 conditions, 7848 events. 5017/7848 cut-off events. For 758963/759012 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 47643 event pairs, 1142 based on Foata normal form. 38/7882 useless extension candidates. Maximal degree in co-relation 76902. Up to 7621 conditions per place. [2024-06-28 04:02:38,498 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 389 selfloop transitions, 40 changer transitions 0/432 dead transitions. [2024-06-28 04:02:38,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 432 transitions, 7831 flow [2024-06-28 04:02:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:02:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:02:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 04:02:38,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:02:38,499 INFO L175 Difference]: Start difference. First operand has 293 places, 395 transitions, 6826 flow. Second operand 9 states and 144 transitions. [2024-06-28 04:02:38,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 432 transitions, 7831 flow [2024-06-28 04:02:40,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 432 transitions, 7635 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 04:02:40,071 INFO L231 Difference]: Finished difference. Result has 295 places, 396 transitions, 6766 flow [2024-06-28 04:02:40,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6630, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6766, PETRI_PLACES=295, PETRI_TRANSITIONS=396} [2024-06-28 04:02:40,072 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2024-06-28 04:02:40,072 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 396 transitions, 6766 flow [2024-06-28 04:02:40,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:40,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:40,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:40,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 04:02:40,072 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:40,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:40,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1336930003, now seen corresponding path program 14 times [2024-06-28 04:02:40,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:40,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529356219] [2024-06-28 04:02:40,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:40,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:43,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:43,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529356219] [2024-06-28 04:02:43,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529356219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:43,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:43,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:43,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936498596] [2024-06-28 04:02:43,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:43,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:43,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:43,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:43,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:43,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:02:43,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 396 transitions, 6766 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:43,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:43,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:02:43,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:45,765 INFO L124 PetriNetUnfolderBase]: 5077/7952 cut-off events. [2024-06-28 04:02:45,765 INFO L125 PetriNetUnfolderBase]: For 811857/811906 co-relation queries the response was YES. [2024-06-28 04:02:45,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76696 conditions, 7952 events. 5077/7952 cut-off events. For 811857/811906 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 48511 event pairs, 1142 based on Foata normal form. 70/8018 useless extension candidates. Maximal degree in co-relation 76546. Up to 7377 conditions per place. [2024-06-28 04:02:45,880 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 386 selfloop transitions, 54 changer transitions 0/443 dead transitions. [2024-06-28 04:02:45,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 443 transitions, 7883 flow [2024-06-28 04:02:45,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 04:02:45,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-28 04:02:45,881 INFO L175 Difference]: Start difference. First operand has 295 places, 396 transitions, 6766 flow. Second operand 10 states and 164 transitions. [2024-06-28 04:02:45,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 443 transitions, 7883 flow [2024-06-28 04:02:47,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 443 transitions, 7740 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 04:02:47,355 INFO L231 Difference]: Finished difference. Result has 298 places, 397 transitions, 6795 flow [2024-06-28 04:02:47,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6623, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6795, PETRI_PLACES=298, PETRI_TRANSITIONS=397} [2024-06-28 04:02:47,355 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 255 predicate places. [2024-06-28 04:02:47,355 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 397 transitions, 6795 flow [2024-06-28 04:02:47,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:47,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:47,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:47,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 04:02:47,356 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:47,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:47,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1331573575, now seen corresponding path program 9 times [2024-06-28 04:02:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:47,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092007301] [2024-06-28 04:02:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:50,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:50,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092007301] [2024-06-28 04:02:50,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092007301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:50,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:50,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:50,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839237434] [2024-06-28 04:02:50,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:50,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:50,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:50,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:50,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:50,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:02:50,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 397 transitions, 6795 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:50,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:50,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:02:50,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:53,013 INFO L124 PetriNetUnfolderBase]: 5033/7884 cut-off events. [2024-06-28 04:02:53,013 INFO L125 PetriNetUnfolderBase]: For 750097/750146 co-relation queries the response was YES. [2024-06-28 04:02:53,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74598 conditions, 7884 events. 5033/7884 cut-off events. For 750097/750146 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 47991 event pairs, 1120 based on Foata normal form. 58/7938 useless extension candidates. Maximal degree in co-relation 74447. Up to 7400 conditions per place. [2024-06-28 04:02:53,113 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 379 selfloop transitions, 64 changer transitions 0/446 dead transitions. [2024-06-28 04:02:53,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 446 transitions, 7962 flow [2024-06-28 04:02:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 04:02:53,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 04:02:53,115 INFO L175 Difference]: Start difference. First operand has 298 places, 397 transitions, 6795 flow. Second operand 10 states and 165 transitions. [2024-06-28 04:02:53,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 446 transitions, 7962 flow [2024-06-28 04:02:54,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 446 transitions, 7764 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-28 04:02:54,678 INFO L231 Difference]: Finished difference. Result has 299 places, 398 transitions, 6786 flow [2024-06-28 04:02:54,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6611, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6786, PETRI_PLACES=299, PETRI_TRANSITIONS=398} [2024-06-28 04:02:54,679 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 256 predicate places. [2024-06-28 04:02:54,679 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 398 transitions, 6786 flow [2024-06-28 04:02:54,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:02:54,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:54,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:54,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 04:02:54,679 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:02:54,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash -34290127, now seen corresponding path program 1 times [2024-06-28 04:02:54,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:54,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554853791] [2024-06-28 04:02:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:54,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:00,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:00,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554853791] [2024-06-28 04:03:00,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554853791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:00,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:00,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:03:00,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574361028] [2024-06-28 04:03:00,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:00,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:03:00,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:00,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:03:00,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:03:00,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:03:00,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 398 transitions, 6786 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:00,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:00,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:03:00,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:02,626 INFO L124 PetriNetUnfolderBase]: 5013/7852 cut-off events. [2024-06-28 04:03:02,626 INFO L125 PetriNetUnfolderBase]: For 703318/703340 co-relation queries the response was YES. [2024-06-28 04:03:02,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73233 conditions, 7852 events. 5013/7852 cut-off events. For 703318/703340 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 47784 event pairs, 1030 based on Foata normal form. 34/7884 useless extension candidates. Maximal degree in co-relation 73082. Up to 7403 conditions per place. [2024-06-28 04:03:02,743 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 379 selfloop transitions, 70 changer transitions 0/452 dead transitions. [2024-06-28 04:03:02,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 452 transitions, 7902 flow [2024-06-28 04:03:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:03:02,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:03:02,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 04:03:02,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:03:02,745 INFO L175 Difference]: Start difference. First operand has 299 places, 398 transitions, 6786 flow. Second operand 10 states and 168 transitions. [2024-06-28 04:03:02,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 452 transitions, 7902 flow [2024-06-28 04:03:04,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 452 transitions, 7735 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 04:03:04,542 INFO L231 Difference]: Finished difference. Result has 301 places, 399 transitions, 6809 flow [2024-06-28 04:03:04,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6629, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6809, PETRI_PLACES=301, PETRI_TRANSITIONS=399} [2024-06-28 04:03:04,542 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 258 predicate places. [2024-06-28 04:03:04,542 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 399 transitions, 6809 flow [2024-06-28 04:03:04,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:04,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:04,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:04,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 04:03:04,543 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:04,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash 537718471, now seen corresponding path program 2 times [2024-06-28 04:03:04,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:04,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192888087] [2024-06-28 04:03:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:04,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:07,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:07,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192888087] [2024-06-28 04:03:07,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192888087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:07,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:07,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:07,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617831458] [2024-06-28 04:03:07,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:07,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:07,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:07,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:07,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:07,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:03:07,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 399 transitions, 6809 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:07,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:07,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:03:07,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:09,959 INFO L124 PetriNetUnfolderBase]: 5061/7936 cut-off events. [2024-06-28 04:03:09,959 INFO L125 PetriNetUnfolderBase]: For 721574/721596 co-relation queries the response was YES. [2024-06-28 04:03:10,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73839 conditions, 7936 events. 5061/7936 cut-off events. For 721574/721596 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 48535 event pairs, 1122 based on Foata normal form. 32/7966 useless extension candidates. Maximal degree in co-relation 73687. Up to 7625 conditions per place. [2024-06-28 04:03:10,073 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 403 selfloop transitions, 41 changer transitions 0/447 dead transitions. [2024-06-28 04:03:10,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 447 transitions, 7877 flow [2024-06-28 04:03:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:03:10,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:03:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 04:03:10,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880952380952381 [2024-06-28 04:03:10,074 INFO L175 Difference]: Start difference. First operand has 301 places, 399 transitions, 6809 flow. Second operand 10 states and 163 transitions. [2024-06-28 04:03:10,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 447 transitions, 7877 flow [2024-06-28 04:03:11,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 447 transitions, 7690 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 04:03:11,817 INFO L231 Difference]: Finished difference. Result has 304 places, 400 transitions, 6750 flow [2024-06-28 04:03:11,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6622, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6750, PETRI_PLACES=304, PETRI_TRANSITIONS=400} [2024-06-28 04:03:11,817 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-28 04:03:11,818 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 400 transitions, 6750 flow [2024-06-28 04:03:11,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:11,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:11,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:11,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 04:03:11,818 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:11,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:11,818 INFO L85 PathProgramCache]: Analyzing trace with hash 324015747, now seen corresponding path program 3 times [2024-06-28 04:03:11,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:11,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552365047] [2024-06-28 04:03:11,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:11,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:15,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:15,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552365047] [2024-06-28 04:03:15,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552365047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:15,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:15,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:03:15,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691078790] [2024-06-28 04:03:15,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:15,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:03:15,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:15,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:03:15,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:03:15,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:03:15,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 400 transitions, 6750 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:15,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:15,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:03:15,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:18,737 INFO L124 PetriNetUnfolderBase]: 5109/8020 cut-off events. [2024-06-28 04:03:18,737 INFO L125 PetriNetUnfolderBase]: For 739607/739656 co-relation queries the response was YES. [2024-06-28 04:03:18,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74221 conditions, 8020 events. 5109/8020 cut-off events. For 739607/739656 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 49274 event pairs, 1134 based on Foata normal form. 46/8062 useless extension candidates. Maximal degree in co-relation 74068. Up to 7709 conditions per place. [2024-06-28 04:03:18,851 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 400 selfloop transitions, 42 changer transitions 0/445 dead transitions. [2024-06-28 04:03:18,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 445 transitions, 7808 flow [2024-06-28 04:03:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:03:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:03:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 04:03:18,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3738095238095238 [2024-06-28 04:03:18,853 INFO L175 Difference]: Start difference. First operand has 304 places, 400 transitions, 6750 flow. Second operand 10 states and 157 transitions. [2024-06-28 04:03:18,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 445 transitions, 7808 flow [2024-06-28 04:03:20,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 445 transitions, 7696 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 04:03:20,579 INFO L231 Difference]: Finished difference. Result has 306 places, 401 transitions, 6770 flow [2024-06-28 04:03:20,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6638, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6770, PETRI_PLACES=306, PETRI_TRANSITIONS=401} [2024-06-28 04:03:20,579 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 263 predicate places. [2024-06-28 04:03:20,580 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 401 transitions, 6770 flow [2024-06-28 04:03:20,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:20,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:20,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:20,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 04:03:20,580 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:20,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:20,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1881815515, now seen corresponding path program 4 times [2024-06-28 04:03:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:20,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070540620] [2024-06-28 04:03:20,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:20,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:23,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:23,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070540620] [2024-06-28 04:03:23,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070540620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:23,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:23,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:03:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131046779] [2024-06-28 04:03:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:23,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:03:23,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:23,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:03:23,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:03:23,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:03:23,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 401 transitions, 6770 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:23,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:23,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:03:23,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:26,226 INFO L124 PetriNetUnfolderBase]: 5157/8104 cut-off events. [2024-06-28 04:03:26,227 INFO L125 PetriNetUnfolderBase]: For 757400/757449 co-relation queries the response was YES. [2024-06-28 04:03:26,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74811 conditions, 8104 events. 5157/8104 cut-off events. For 757400/757449 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 49811 event pairs, 1023 based on Foata normal form. 46/8146 useless extension candidates. Maximal degree in co-relation 74657. Up to 7699 conditions per place. [2024-06-28 04:03:26,317 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 397 selfloop transitions, 52 changer transitions 0/452 dead transitions. [2024-06-28 04:03:26,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 452 transitions, 7860 flow [2024-06-28 04:03:26,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:03:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:03:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 04:03:26,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37012987012987014 [2024-06-28 04:03:26,318 INFO L175 Difference]: Start difference. First operand has 306 places, 401 transitions, 6770 flow. Second operand 11 states and 171 transitions. [2024-06-28 04:03:26,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 452 transitions, 7860 flow [2024-06-28 04:03:27,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 452 transitions, 7744 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 04:03:27,997 INFO L231 Difference]: Finished difference. Result has 309 places, 402 transitions, 6808 flow [2024-06-28 04:03:27,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6654, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6808, PETRI_PLACES=309, PETRI_TRANSITIONS=402} [2024-06-28 04:03:27,998 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 266 predicate places. [2024-06-28 04:03:27,998 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 402 transitions, 6808 flow [2024-06-28 04:03:27,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:27,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:27,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:27,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 04:03:27,998 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:27,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1498169657, now seen corresponding path program 5 times [2024-06-28 04:03:27,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:27,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165048041] [2024-06-28 04:03:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:27,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:31,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:31,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:31,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165048041] [2024-06-28 04:03:31,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165048041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:31,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:31,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 04:03:31,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962633568] [2024-06-28 04:03:31,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:31,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 04:03:31,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:31,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 04:03:31,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 04:03:31,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:03:31,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 402 transitions, 6808 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:31,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:31,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:03:31,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:34,108 INFO L124 PetriNetUnfolderBase]: 5137/8072 cut-off events. [2024-06-28 04:03:34,108 INFO L125 PetriNetUnfolderBase]: For 741810/741859 co-relation queries the response was YES. [2024-06-28 04:03:34,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73853 conditions, 8072 events. 5137/8072 cut-off events. For 741810/741859 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 49720 event pairs, 1140 based on Foata normal form. 46/8114 useless extension candidates. Maximal degree in co-relation 73698. Up to 7761 conditions per place. [2024-06-28 04:03:34,221 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 401 selfloop transitions, 41 changer transitions 0/445 dead transitions. [2024-06-28 04:03:34,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 445 transitions, 7680 flow [2024-06-28 04:03:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:03:34,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:03:34,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 04:03:34,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-28 04:03:34,222 INFO L175 Difference]: Start difference. First operand has 309 places, 402 transitions, 6808 flow. Second operand 10 states and 158 transitions. [2024-06-28 04:03:34,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 445 transitions, 7680 flow [2024-06-28 04:03:35,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 445 transitions, 7542 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 04:03:35,803 INFO L231 Difference]: Finished difference. Result has 309 places, 401 transitions, 6610 flow [2024-06-28 04:03:35,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6524, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6610, PETRI_PLACES=309, PETRI_TRANSITIONS=401} [2024-06-28 04:03:35,804 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 266 predicate places. [2024-06-28 04:03:35,804 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 401 transitions, 6610 flow [2024-06-28 04:03:35,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:35,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:35,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:35,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 04:03:35,804 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:35,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:35,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1999276850, now seen corresponding path program 1 times [2024-06-28 04:03:35,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:35,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008161430] [2024-06-28 04:03:35,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:35,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:37,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:37,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008161430] [2024-06-28 04:03:37,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008161430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:37,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:37,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:03:37,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878717687] [2024-06-28 04:03:37,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:37,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:03:37,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:37,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:03:37,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:03:37,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:03:37,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 401 transitions, 6610 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:37,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:37,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:03:37,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:40,400 INFO L124 PetriNetUnfolderBase]: 5147/8087 cut-off events. [2024-06-28 04:03:40,400 INFO L125 PetriNetUnfolderBase]: For 732508/732508 co-relation queries the response was YES. [2024-06-28 04:03:40,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73946 conditions, 8087 events. 5147/8087 cut-off events. For 732508/732508 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 49868 event pairs, 1169 based on Foata normal form. 2/8087 useless extension candidates. Maximal degree in co-relation 73790. Up to 8010 conditions per place. [2024-06-28 04:03:40,502 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 404 selfloop transitions, 23 changer transitions 0/430 dead transitions. [2024-06-28 04:03:40,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 430 transitions, 7850 flow [2024-06-28 04:03:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:03:40,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:03:40,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 04:03:40,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707482993197279 [2024-06-28 04:03:40,504 INFO L175 Difference]: Start difference. First operand has 309 places, 401 transitions, 6610 flow. Second operand 7 states and 109 transitions. [2024-06-28 04:03:40,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 430 transitions, 7850 flow [2024-06-28 04:03:42,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 430 transitions, 7732 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 04:03:42,158 INFO L231 Difference]: Finished difference. Result has 308 places, 407 transitions, 6707 flow [2024-06-28 04:03:42,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6492, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6707, PETRI_PLACES=308, PETRI_TRANSITIONS=407} [2024-06-28 04:03:42,159 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 265 predicate places. [2024-06-28 04:03:42,159 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 407 transitions, 6707 flow [2024-06-28 04:03:42,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:42,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:42,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:42,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 04:03:42,159 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:42,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:42,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1999156694, now seen corresponding path program 1 times [2024-06-28 04:03:42,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:42,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148029790] [2024-06-28 04:03:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:42,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:44,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:44,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148029790] [2024-06-28 04:03:44,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148029790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:44,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:44,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:03:44,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797898757] [2024-06-28 04:03:44,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:44,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:03:44,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:44,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:03:44,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:03:44,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:03:44,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 407 transitions, 6707 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:44,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:44,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:03:44,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:46,734 INFO L124 PetriNetUnfolderBase]: 5192/8149 cut-off events. [2024-06-28 04:03:46,734 INFO L125 PetriNetUnfolderBase]: For 756998/757047 co-relation queries the response was YES. [2024-06-28 04:03:46,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74741 conditions, 8149 events. 5192/8149 cut-off events. For 756998/757047 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 50239 event pairs, 1168 based on Foata normal form. 38/8183 useless extension candidates. Maximal degree in co-relation 74584. Up to 7942 conditions per place. [2024-06-28 04:03:46,853 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 380 selfloop transitions, 62 changer transitions 0/445 dead transitions. [2024-06-28 04:03:46,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 445 transitions, 8071 flow [2024-06-28 04:03:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:03:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:03:46,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 04:03:46,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3843537414965986 [2024-06-28 04:03:46,855 INFO L175 Difference]: Start difference. First operand has 308 places, 407 transitions, 6707 flow. Second operand 7 states and 113 transitions. [2024-06-28 04:03:46,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 445 transitions, 8071 flow [2024-06-28 04:03:48,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 445 transitions, 7977 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-28 04:03:48,557 INFO L231 Difference]: Finished difference. Result has 313 places, 425 transitions, 7023 flow [2024-06-28 04:03:48,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6616, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7023, PETRI_PLACES=313, PETRI_TRANSITIONS=425} [2024-06-28 04:03:48,557 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 270 predicate places. [2024-06-28 04:03:48,557 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 425 transitions, 7023 flow [2024-06-28 04:03:48,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:48,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:48,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:48,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 04:03:48,558 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:48,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:48,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1828454450, now seen corresponding path program 2 times [2024-06-28 04:03:48,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:48,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696690230] [2024-06-28 04:03:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:48,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:50,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:50,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696690230] [2024-06-28 04:03:50,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696690230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:50,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:50,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:03:50,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859333536] [2024-06-28 04:03:50,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:50,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:03:50,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:50,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:03:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:03:50,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:03:50,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 425 transitions, 7023 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:50,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:50,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:03:50,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:53,392 INFO L124 PetriNetUnfolderBase]: 5202/8164 cut-off events. [2024-06-28 04:03:53,392 INFO L125 PetriNetUnfolderBase]: For 768152/768152 co-relation queries the response was YES. [2024-06-28 04:03:53,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75218 conditions, 8164 events. 5202/8164 cut-off events. For 768152/768152 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 50356 event pairs, 1165 based on Foata normal form. 2/8164 useless extension candidates. Maximal degree in co-relation 75058. Up to 8119 conditions per place. [2024-06-28 04:03:53,490 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 424 selfloop transitions, 19 changer transitions 0/446 dead transitions. [2024-06-28 04:03:53,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 446 transitions, 8050 flow [2024-06-28 04:03:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:03:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:03:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-06-28 04:03:53,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3469387755102041 [2024-06-28 04:03:53,491 INFO L175 Difference]: Start difference. First operand has 313 places, 425 transitions, 7023 flow. Second operand 7 states and 102 transitions. [2024-06-28 04:03:53,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 446 transitions, 8050 flow [2024-06-28 04:03:55,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 446 transitions, 7953 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 04:03:55,041 INFO L231 Difference]: Finished difference. Result has 317 places, 429 transitions, 7063 flow [2024-06-28 04:03:55,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6926, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7063, PETRI_PLACES=317, PETRI_TRANSITIONS=429} [2024-06-28 04:03:55,041 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 274 predicate places. [2024-06-28 04:03:55,041 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 429 transitions, 7063 flow [2024-06-28 04:03:55,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:55,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:55,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:55,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 04:03:55,042 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:03:55,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1555325606, now seen corresponding path program 2 times [2024-06-28 04:03:55,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:55,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904639566] [2024-06-28 04:03:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:55,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:56,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:56,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904639566] [2024-06-28 04:03:56,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904639566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:56,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:56,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:03:56,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072833010] [2024-06-28 04:03:56,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:56,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:03:56,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:03:56,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:03:56,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:03:56,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 429 transitions, 7063 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:03:56,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:56,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:03:56,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:59,552 INFO L124 PetriNetUnfolderBase]: 5222/8194 cut-off events. [2024-06-28 04:03:59,552 INFO L125 PetriNetUnfolderBase]: For 792915/792978 co-relation queries the response was YES. [2024-06-28 04:03:59,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75520 conditions, 8194 events. 5222/8194 cut-off events. For 792915/792978 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 50583 event pairs, 1189 based on Foata normal form. 46/8236 useless extension candidates. Maximal degree in co-relation 75359. Up to 7972 conditions per place. [2024-06-28 04:03:59,688 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 377 selfloop transitions, 69 changer transitions 0/449 dead transitions. [2024-06-28 04:03:59,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 449 transitions, 8266 flow [2024-06-28 04:03:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:03:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:03:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-28 04:03:59,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:03:59,690 INFO L175 Difference]: Start difference. First operand has 317 places, 429 transitions, 7063 flow. Second operand 6 states and 96 transitions. [2024-06-28 04:03:59,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 449 transitions, 8266 flow [2024-06-28 04:04:01,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 449 transitions, 8180 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:01,798 INFO L231 Difference]: Finished difference. Result has 319 places, 436 transitions, 7239 flow [2024-06-28 04:04:01,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6977, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7239, PETRI_PLACES=319, PETRI_TRANSITIONS=436} [2024-06-28 04:04:01,799 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-06-28 04:04:01,799 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 436 transitions, 7239 flow [2024-06-28 04:04:01,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:01,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:01,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:01,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 04:04:01,799 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:01,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:01,800 INFO L85 PathProgramCache]: Analyzing trace with hash -491501060, now seen corresponding path program 3 times [2024-06-28 04:04:01,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:01,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025151796] [2024-06-28 04:04:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:03,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:03,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025151796] [2024-06-28 04:04:03,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025151796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:03,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:04:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719009578] [2024-06-28 04:04:03,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:03,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:04:03,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:03,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:04:03,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:04:03,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:04:03,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 436 transitions, 7239 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:03,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:03,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:04:03,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:06,122 INFO L124 PetriNetUnfolderBase]: 5178/8123 cut-off events. [2024-06-28 04:04:06,122 INFO L125 PetriNetUnfolderBase]: For 794284/794333 co-relation queries the response was YES. [2024-06-28 04:04:06,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74939 conditions, 8123 events. 5178/8123 cut-off events. For 794284/794333 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 50062 event pairs, 1160 based on Foata normal form. 38/8157 useless extension candidates. Maximal degree in co-relation 74777. Up to 7913 conditions per place. [2024-06-28 04:04:06,251 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 380 selfloop transitions, 69 changer transitions 0/452 dead transitions. [2024-06-28 04:04:06,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 452 transitions, 8187 flow [2024-06-28 04:04:06,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:06,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-28 04:04:06,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 04:04:06,252 INFO L175 Difference]: Start difference. First operand has 319 places, 436 transitions, 7239 flow. Second operand 6 states and 99 transitions. [2024-06-28 04:04:06,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 452 transitions, 8187 flow [2024-06-28 04:04:08,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 452 transitions, 7999 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:08,181 INFO L231 Difference]: Finished difference. Result has 321 places, 436 transitions, 7211 flow [2024-06-28 04:04:08,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7051, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7211, PETRI_PLACES=321, PETRI_TRANSITIONS=436} [2024-06-28 04:04:08,181 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 278 predicate places. [2024-06-28 04:04:08,181 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 436 transitions, 7211 flow [2024-06-28 04:04:08,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:08,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:08,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:08,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 04:04:08,182 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:08,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:08,182 INFO L85 PathProgramCache]: Analyzing trace with hash -491501246, now seen corresponding path program 3 times [2024-06-28 04:04:08,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:08,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106054772] [2024-06-28 04:04:08,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:08,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:10,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:10,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106054772] [2024-06-28 04:04:10,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106054772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:10,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:10,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:04:10,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099441306] [2024-06-28 04:04:10,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:10,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:04:10,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:10,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:04:10,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:04:10,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:04:10,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 436 transitions, 7211 flow. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:10,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:10,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:04:10,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:12,747 INFO L124 PetriNetUnfolderBase]: 5172/8116 cut-off events. [2024-06-28 04:04:12,748 INFO L125 PetriNetUnfolderBase]: For 796890/796890 co-relation queries the response was YES. [2024-06-28 04:04:12,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74915 conditions, 8116 events. 5172/8116 cut-off events. For 796890/796890 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49986 event pairs, 1158 based on Foata normal form. 2/8116 useless extension candidates. Maximal degree in co-relation 74753. Up to 8043 conditions per place. [2024-06-28 04:04:12,861 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 427 selfloop transitions, 26 changer transitions 0/456 dead transitions. [2024-06-28 04:04:12,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 456 transitions, 8181 flow [2024-06-28 04:04:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:12,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:12,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-28 04:04:12,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38492063492063494 [2024-06-28 04:04:12,863 INFO L175 Difference]: Start difference. First operand has 321 places, 436 transitions, 7211 flow. Second operand 6 states and 97 transitions. [2024-06-28 04:04:12,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 456 transitions, 8181 flow [2024-06-28 04:04:14,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 456 transitions, 7946 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 04:04:14,792 INFO L231 Difference]: Finished difference. Result has 321 places, 436 transitions, 7044 flow [2024-06-28 04:04:14,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6976, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7044, PETRI_PLACES=321, PETRI_TRANSITIONS=436} [2024-06-28 04:04:14,792 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 278 predicate places. [2024-06-28 04:04:14,792 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 436 transitions, 7044 flow [2024-06-28 04:04:14,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:14,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:14,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:14,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 04:04:14,793 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:14,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:14,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1555334534, now seen corresponding path program 1 times [2024-06-28 04:04:14,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:14,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075146177] [2024-06-28 04:04:14,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:14,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:17,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:17,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075146177] [2024-06-28 04:04:17,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075146177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:17,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:17,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:17,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910942240] [2024-06-28 04:04:17,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:17,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:17,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:17,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:17,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:17,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:04:17,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 436 transitions, 7044 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:17,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:17,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:04:17,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:19,330 INFO L124 PetriNetUnfolderBase]: 5175/8120 cut-off events. [2024-06-28 04:04:19,330 INFO L125 PetriNetUnfolderBase]: For 801014/801063 co-relation queries the response was YES. [2024-06-28 04:04:19,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74601 conditions, 8120 events. 5175/8120 cut-off events. For 801014/801063 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 49978 event pairs, 1151 based on Foata normal form. 38/8154 useless extension candidates. Maximal degree in co-relation 74438. Up to 8031 conditions per place. [2024-06-28 04:04:19,454 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 420 selfloop transitions, 28 changer transitions 0/451 dead transitions. [2024-06-28 04:04:19,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 451 transitions, 8025 flow [2024-06-28 04:04:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:19,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-28 04:04:19,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-28 04:04:19,455 INFO L175 Difference]: Start difference. First operand has 321 places, 436 transitions, 7044 flow. Second operand 6 states and 92 transitions. [2024-06-28 04:04:19,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 451 transitions, 8025 flow [2024-06-28 04:04:21,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 451 transitions, 7971 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 04:04:21,234 INFO L231 Difference]: Finished difference. Result has 322 places, 439 transitions, 7111 flow [2024-06-28 04:04:21,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6990, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7111, PETRI_PLACES=322, PETRI_TRANSITIONS=439} [2024-06-28 04:04:21,235 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2024-06-28 04:04:21,235 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 439 transitions, 7111 flow [2024-06-28 04:04:21,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:21,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:21,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:21,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 04:04:21,235 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:21,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:21,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1414299505, now seen corresponding path program 1 times [2024-06-28 04:04:21,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:21,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459370973] [2024-06-28 04:04:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:21,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:23,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:23,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459370973] [2024-06-28 04:04:23,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459370973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:23,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:23,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:23,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890971193] [2024-06-28 04:04:23,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:23,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:23,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:23,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:04:23,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 439 transitions, 7111 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:23,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:23,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:04:23,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:25,633 INFO L124 PetriNetUnfolderBase]: 5185/8134 cut-off events. [2024-06-28 04:04:25,633 INFO L125 PetriNetUnfolderBase]: For 783541/783590 co-relation queries the response was YES. [2024-06-28 04:04:25,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74992 conditions, 8134 events. 5185/8134 cut-off events. For 783541/783590 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 50115 event pairs, 1176 based on Foata normal form. 36/8166 useless extension candidates. Maximal degree in co-relation 74828. Up to 7990 conditions per place. [2024-06-28 04:04:25,730 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 428 selfloop transitions, 42 changer transitions 0/473 dead transitions. [2024-06-28 04:04:25,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 473 transitions, 8573 flow [2024-06-28 04:04:25,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:04:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:04:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-28 04:04:25,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37755102040816324 [2024-06-28 04:04:25,732 INFO L175 Difference]: Start difference. First operand has 322 places, 439 transitions, 7111 flow. Second operand 7 states and 111 transitions. [2024-06-28 04:04:25,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 473 transitions, 8573 flow [2024-06-28 04:04:27,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 473 transitions, 8479 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:27,458 INFO L231 Difference]: Finished difference. Result has 326 places, 449 transitions, 7409 flow [2024-06-28 04:04:27,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7017, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7409, PETRI_PLACES=326, PETRI_TRANSITIONS=449} [2024-06-28 04:04:27,458 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 283 predicate places. [2024-06-28 04:04:27,459 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 449 transitions, 7409 flow [2024-06-28 04:04:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:27,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:27,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:27,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 04:04:27,459 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:27,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:27,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2069737551, now seen corresponding path program 2 times [2024-06-28 04:04:27,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:27,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725572970] [2024-06-28 04:04:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:27,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:29,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:29,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:29,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725572970] [2024-06-28 04:04:29,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725572970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:29,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:29,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:04:29,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517578977] [2024-06-28 04:04:29,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:04:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:29,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:04:29,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:04:29,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:04:29,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 449 transitions, 7409 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2024-06-28 04:04:29,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:29,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:04:29,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:31,299 INFO L124 PetriNetUnfolderBase]: 5187/8137 cut-off events. [2024-06-28 04:04:31,300 INFO L125 PetriNetUnfolderBase]: For 802956/803002 co-relation queries the response was YES. [2024-06-28 04:04:31,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75568 conditions, 8137 events. 5187/8137 cut-off events. For 802956/803002 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 50147 event pairs, 1174 based on Foata normal form. 34/8167 useless extension candidates. Maximal degree in co-relation 75402. Up to 7994 conditions per place. [2024-06-28 04:04:31,415 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 425 selfloop transitions, 46 changer transitions 0/474 dead transitions. [2024-06-28 04:04:31,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 474 transitions, 8689 flow [2024-06-28 04:04:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-28 04:04:31,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007936507936508 [2024-06-28 04:04:31,416 INFO L175 Difference]: Start difference. First operand has 326 places, 449 transitions, 7409 flow. Second operand 6 states and 101 transitions. [2024-06-28 04:04:31,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 474 transitions, 8689 flow [2024-06-28 04:04:33,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 474 transitions, 8548 flow, removed 62 selfloop flow, removed 2 redundant places. [2024-06-28 04:04:33,473 INFO L231 Difference]: Finished difference. Result has 330 places, 452 transitions, 7469 flow [2024-06-28 04:04:33,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7284, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7469, PETRI_PLACES=330, PETRI_TRANSITIONS=452} [2024-06-28 04:04:33,474 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 287 predicate places. [2024-06-28 04:04:33,474 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 452 transitions, 7469 flow [2024-06-28 04:04:33,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2024-06-28 04:04:33,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:33,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:33,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 04:04:33,475 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:33,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:33,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1830969443, now seen corresponding path program 3 times [2024-06-28 04:04:33,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:33,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472997520] [2024-06-28 04:04:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:33,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:35,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:35,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472997520] [2024-06-28 04:04:35,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472997520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:35,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:35,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:04:35,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965446251] [2024-06-28 04:04:35,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:35,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:04:35,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:35,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:04:35,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:04:35,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:04:35,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 452 transitions, 7469 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2024-06-28 04:04:35,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:35,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:04:35,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:37,401 INFO L124 PetriNetUnfolderBase]: 5181/8129 cut-off events. [2024-06-28 04:04:37,402 INFO L125 PetriNetUnfolderBase]: For 811782/811828 co-relation queries the response was YES. [2024-06-28 04:04:37,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75496 conditions, 8129 events. 5181/8129 cut-off events. For 811782/811828 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 50107 event pairs, 1171 based on Foata normal form. 34/8159 useless extension candidates. Maximal degree in co-relation 75328. Up to 8057 conditions per place. [2024-06-28 04:04:37,523 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 436 selfloop transitions, 25 changer transitions 0/464 dead transitions. [2024-06-28 04:04:37,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 464 transitions, 8430 flow [2024-06-28 04:04:37,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:04:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:04:37,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-06-28 04:04:37,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-28 04:04:37,524 INFO L175 Difference]: Start difference. First operand has 330 places, 452 transitions, 7469 flow. Second operand 6 states and 90 transitions. [2024-06-28 04:04:37,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 464 transitions, 8430 flow [2024-06-28 04:04:39,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 464 transitions, 8230 flow, removed 71 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:39,479 INFO L231 Difference]: Finished difference. Result has 332 places, 452 transitions, 7327 flow [2024-06-28 04:04:39,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7269, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7327, PETRI_PLACES=332, PETRI_TRANSITIONS=452} [2024-06-28 04:04:39,480 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 289 predicate places. [2024-06-28 04:04:39,480 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 452 transitions, 7327 flow [2024-06-28 04:04:39,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2024-06-28 04:04:39,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:39,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:39,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 04:04:39,481 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:39,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:39,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1581390653, now seen corresponding path program 1 times [2024-06-28 04:04:39,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:39,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527213592] [2024-06-28 04:04:39,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:39,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:42,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:42,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527213592] [2024-06-28 04:04:42,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527213592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:42,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:42,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19824908] [2024-06-28 04:04:42,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:42,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:42,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:42,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:42,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:42,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:04:42,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 452 transitions, 7327 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:42,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:42,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:04:42,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:45,245 INFO L124 PetriNetUnfolderBase]: 5277/8263 cut-off events. [2024-06-28 04:04:45,246 INFO L125 PetriNetUnfolderBase]: For 853729/853775 co-relation queries the response was YES. [2024-06-28 04:04:45,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77164 conditions, 8263 events. 5277/8263 cut-off events. For 853729/853775 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 50916 event pairs, 1177 based on Foata normal form. 40/8299 useless extension candidates. Maximal degree in co-relation 76996. Up to 7725 conditions per place. [2024-06-28 04:04:45,363 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 399 selfloop transitions, 92 changer transitions 0/494 dead transitions. [2024-06-28 04:04:45,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 494 transitions, 9128 flow [2024-06-28 04:04:45,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:45,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 04:04:45,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2024-06-28 04:04:45,364 INFO L175 Difference]: Start difference. First operand has 332 places, 452 transitions, 7327 flow. Second operand 8 states and 135 transitions. [2024-06-28 04:04:45,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 494 transitions, 9128 flow [2024-06-28 04:04:47,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 494 transitions, 9025 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 04:04:47,253 INFO L231 Difference]: Finished difference. Result has 336 places, 463 transitions, 7748 flow [2024-06-28 04:04:47,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7224, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7748, PETRI_PLACES=336, PETRI_TRANSITIONS=463} [2024-06-28 04:04:47,253 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 293 predicate places. [2024-06-28 04:04:47,253 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 463 transitions, 7748 flow [2024-06-28 04:04:47,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:47,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:47,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:47,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 04:04:47,254 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:47,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:47,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1844319117, now seen corresponding path program 2 times [2024-06-28 04:04:47,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:47,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347215053] [2024-06-28 04:04:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:47,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:49,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:49,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:49,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347215053] [2024-06-28 04:04:49,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347215053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:49,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:49,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:49,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740151343] [2024-06-28 04:04:49,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:49,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:49,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:49,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:49,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:49,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:04:49,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 463 transitions, 7748 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:49,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:49,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:04:49,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:52,594 INFO L124 PetriNetUnfolderBase]: 5405/8441 cut-off events. [2024-06-28 04:04:52,594 INFO L125 PetriNetUnfolderBase]: For 921164/921210 co-relation queries the response was YES. [2024-06-28 04:04:52,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81072 conditions, 8441 events. 5405/8441 cut-off events. For 921164/921210 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 52058 event pairs, 1200 based on Foata normal form. 40/8477 useless extension candidates. Maximal degree in co-relation 80903. Up to 8100 conditions per place. [2024-06-28 04:04:52,732 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 421 selfloop transitions, 72 changer transitions 0/496 dead transitions. [2024-06-28 04:04:52,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 496 transitions, 9267 flow [2024-06-28 04:04:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:04:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:04:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 04:04:52,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:04:52,733 INFO L175 Difference]: Start difference. First operand has 336 places, 463 transitions, 7748 flow. Second operand 8 states and 128 transitions. [2024-06-28 04:04:52,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 496 transitions, 9267 flow [2024-06-28 04:04:54,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 496 transitions, 9048 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-28 04:04:54,795 INFO L231 Difference]: Finished difference. Result has 341 places, 471 transitions, 7942 flow [2024-06-28 04:04:54,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7549, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7942, PETRI_PLACES=341, PETRI_TRANSITIONS=471} [2024-06-28 04:04:54,795 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 298 predicate places. [2024-06-28 04:04:54,795 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 471 transitions, 7942 flow [2024-06-28 04:04:54,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:54,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:54,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:54,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 04:04:54,796 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:04:54,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1844313537, now seen corresponding path program 3 times [2024-06-28 04:04:54,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:54,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255870009] [2024-06-28 04:04:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:54,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:57,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:57,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255870009] [2024-06-28 04:04:57,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255870009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:57,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:57,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:04:57,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478708464] [2024-06-28 04:04:57,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:57,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:04:57,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:57,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:04:57,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:04:57,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:04:57,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 471 transitions, 7942 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:04:57,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:57,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:04:57,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:59,989 INFO L124 PetriNetUnfolderBase]: 5413/8453 cut-off events. [2024-06-28 04:04:59,989 INFO L125 PetriNetUnfolderBase]: For 928651/928697 co-relation queries the response was YES. [2024-06-28 04:05:00,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80917 conditions, 8453 events. 5413/8453 cut-off events. For 928651/928697 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 52119 event pairs, 1196 based on Foata normal form. 40/8489 useless extension candidates. Maximal degree in co-relation 80746. Up to 8112 conditions per place. [2024-06-28 04:05:00,121 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 419 selfloop transitions, 81 changer transitions 0/503 dead transitions. [2024-06-28 04:05:00,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 503 transitions, 9357 flow [2024-06-28 04:05:00,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:00,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 04:05:00,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36428571428571427 [2024-06-28 04:05:00,123 INFO L175 Difference]: Start difference. First operand has 341 places, 471 transitions, 7942 flow. Second operand 10 states and 153 transitions. [2024-06-28 04:05:00,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 503 transitions, 9357 flow [2024-06-28 04:05:02,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 503 transitions, 9166 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-28 04:05:02,474 INFO L231 Difference]: Finished difference. Result has 347 places, 475 transitions, 8035 flow [2024-06-28 04:05:02,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7767, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8035, PETRI_PLACES=347, PETRI_TRANSITIONS=475} [2024-06-28 04:05:02,474 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 304 predicate places. [2024-06-28 04:05:02,474 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 475 transitions, 8035 flow [2024-06-28 04:05:02,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:02,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:02,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:02,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 04:05:02,475 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:02,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:02,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1943332577, now seen corresponding path program 4 times [2024-06-28 04:05:02,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:02,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933535573] [2024-06-28 04:05:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:04,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:04,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933535573] [2024-06-28 04:05:04,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933535573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:04,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:04,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:05:04,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897050496] [2024-06-28 04:05:04,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:04,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:05:04,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:05:04,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:05:04,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:05:04,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 475 transitions, 8035 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:04,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:04,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:05:04,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:07,786 INFO L124 PetriNetUnfolderBase]: 5461/8521 cut-off events. [2024-06-28 04:05:07,786 INFO L125 PetriNetUnfolderBase]: For 946794/946840 co-relation queries the response was YES. [2024-06-28 04:05:07,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81710 conditions, 8521 events. 5461/8521 cut-off events. For 946794/946840 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 52534 event pairs, 1188 based on Foata normal form. 40/8557 useless extension candidates. Maximal degree in co-relation 81537. Up to 7943 conditions per place. [2024-06-28 04:05:07,900 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 403 selfloop transitions, 100 changer transitions 0/506 dead transitions. [2024-06-28 04:05:07,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 506 transitions, 9488 flow [2024-06-28 04:05:07,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:05:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:05:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:05:07,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 04:05:07,901 INFO L175 Difference]: Start difference. First operand has 347 places, 475 transitions, 8035 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:05:07,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 506 transitions, 9488 flow [2024-06-28 04:05:10,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 506 transitions, 9268 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 04:05:10,288 INFO L231 Difference]: Finished difference. Result has 347 places, 480 transitions, 8235 flow [2024-06-28 04:05:10,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7815, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8235, PETRI_PLACES=347, PETRI_TRANSITIONS=480} [2024-06-28 04:05:10,288 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 304 predicate places. [2024-06-28 04:05:10,288 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 480 transitions, 8235 flow [2024-06-28 04:05:10,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:10,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:10,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:10,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 04:05:10,289 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:10,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:10,289 INFO L85 PathProgramCache]: Analyzing trace with hash 963103713, now seen corresponding path program 5 times [2024-06-28 04:05:10,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:10,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75278904] [2024-06-28 04:05:10,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:10,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:12,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:12,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75278904] [2024-06-28 04:05:12,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75278904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:12,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:12,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:05:12,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021293023] [2024-06-28 04:05:12,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:12,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:05:12,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:12,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:05:12,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:05:12,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:05:12,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 480 transitions, 8235 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:12,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:12,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:05:12,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:15,902 INFO L124 PetriNetUnfolderBase]: 5501/8577 cut-off events. [2024-06-28 04:05:15,902 INFO L125 PetriNetUnfolderBase]: For 970901/970947 co-relation queries the response was YES. [2024-06-28 04:05:16,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82895 conditions, 8577 events. 5501/8577 cut-off events. For 970901/970947 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 52824 event pairs, 1196 based on Foata normal form. 40/8613 useless extension candidates. Maximal degree in co-relation 82720. Up to 7967 conditions per place. [2024-06-28 04:05:16,044 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 397 selfloop transitions, 115 changer transitions 0/515 dead transitions. [2024-06-28 04:05:16,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 515 transitions, 9717 flow [2024-06-28 04:05:16,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:05:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:05:16,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 04:05:16,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835978835978836 [2024-06-28 04:05:16,045 INFO L175 Difference]: Start difference. First operand has 347 places, 480 transitions, 8235 flow. Second operand 9 states and 145 transitions. [2024-06-28 04:05:16,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 515 transitions, 9717 flow [2024-06-28 04:05:18,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 515 transitions, 9409 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:18,390 INFO L231 Difference]: Finished difference. Result has 351 places, 484 transitions, 8299 flow [2024-06-28 04:05:18,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7947, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8299, PETRI_PLACES=351, PETRI_TRANSITIONS=484} [2024-06-28 04:05:18,390 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-06-28 04:05:18,391 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 484 transitions, 8299 flow [2024-06-28 04:05:18,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:18,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:18,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:18,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 04:05:18,391 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:18,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:18,391 INFO L85 PathProgramCache]: Analyzing trace with hash 970455363, now seen corresponding path program 6 times [2024-06-28 04:05:18,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:18,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898414318] [2024-06-28 04:05:18,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:18,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:20,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:20,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898414318] [2024-06-28 04:05:20,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898414318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:20,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:20,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:05:20,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585498900] [2024-06-28 04:05:20,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:20,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:05:20,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:20,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:05:20,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:05:20,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:05:20,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 484 transitions, 8299 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:20,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:20,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:05:20,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:23,601 INFO L124 PetriNetUnfolderBase]: 5509/8592 cut-off events. [2024-06-28 04:05:23,601 INFO L125 PetriNetUnfolderBase]: For 952067/952127 co-relation queries the response was YES. [2024-06-28 04:05:23,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82276 conditions, 8592 events. 5509/8592 cut-off events. For 952067/952127 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 53071 event pairs, 1207 based on Foata normal form. 54/8642 useless extension candidates. Maximal degree in co-relation 82100. Up to 7979 conditions per place. [2024-06-28 04:05:23,738 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 392 selfloop transitions, 119 changer transitions 0/514 dead transitions. [2024-06-28 04:05:23,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 514 transitions, 9733 flow [2024-06-28 04:05:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:05:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:05:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 04:05:23,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 04:05:23,739 INFO L175 Difference]: Start difference. First operand has 351 places, 484 transitions, 8299 flow. Second operand 9 states and 141 transitions. [2024-06-28 04:05:23,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 514 transitions, 9733 flow [2024-06-28 04:05:26,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 514 transitions, 9425 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 04:05:26,468 INFO L231 Difference]: Finished difference. Result has 353 places, 488 transitions, 8355 flow [2024-06-28 04:05:26,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8001, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8355, PETRI_PLACES=353, PETRI_TRANSITIONS=488} [2024-06-28 04:05:26,468 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 310 predicate places. [2024-06-28 04:05:26,469 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 488 transitions, 8355 flow [2024-06-28 04:05:26,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:26,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:26,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:26,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 04:05:26,469 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:26,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:26,469 INFO L85 PathProgramCache]: Analyzing trace with hash -303197931, now seen corresponding path program 1 times [2024-06-28 04:05:26,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:26,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753807764] [2024-06-28 04:05:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:26,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:28,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:28,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:28,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753807764] [2024-06-28 04:05:28,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753807764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:28,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:28,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:28,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771002279] [2024-06-28 04:05:28,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:28,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:28,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:28,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:28,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:05:28,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 488 transitions, 8355 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:28,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:28,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:05:28,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:31,798 INFO L124 PetriNetUnfolderBase]: 5532/8621 cut-off events. [2024-06-28 04:05:31,798 INFO L125 PetriNetUnfolderBase]: For 929868/929914 co-relation queries the response was YES. [2024-06-28 04:05:31,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82411 conditions, 8621 events. 5532/8621 cut-off events. For 929868/929914 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 53106 event pairs, 1208 based on Foata normal form. 34/8651 useless extension candidates. Maximal degree in co-relation 82234. Up to 8407 conditions per place. [2024-06-28 04:05:31,908 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 471 selfloop transitions, 60 changer transitions 0/534 dead transitions. [2024-06-28 04:05:31,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 534 transitions, 9901 flow [2024-06-28 04:05:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:31,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 04:05:31,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36428571428571427 [2024-06-28 04:05:31,910 INFO L175 Difference]: Start difference. First operand has 353 places, 488 transitions, 8355 flow. Second operand 10 states and 153 transitions. [2024-06-28 04:05:31,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 534 transitions, 9901 flow [2024-06-28 04:05:34,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 534 transitions, 9589 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 04:05:34,237 INFO L231 Difference]: Finished difference. Result has 357 places, 497 transitions, 8349 flow [2024-06-28 04:05:34,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8043, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8349, PETRI_PLACES=357, PETRI_TRANSITIONS=497} [2024-06-28 04:05:34,237 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 314 predicate places. [2024-06-28 04:05:34,238 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 497 transitions, 8349 flow [2024-06-28 04:05:34,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:34,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:34,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:34,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 04:05:34,238 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:34,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash -185107399, now seen corresponding path program 1 times [2024-06-28 04:05:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:34,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943662309] [2024-06-28 04:05:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:36,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:36,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943662309] [2024-06-28 04:05:36,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943662309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:36,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:36,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:05:36,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035016179] [2024-06-28 04:05:36,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:36,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:05:36,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:36,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:05:36,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:05:36,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:05:36,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 497 transitions, 8349 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:36,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:36,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:05:36,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:39,899 INFO L124 PetriNetUnfolderBase]: 5606/8723 cut-off events. [2024-06-28 04:05:39,900 INFO L125 PetriNetUnfolderBase]: For 983186/983206 co-relation queries the response was YES. [2024-06-28 04:05:40,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84386 conditions, 8723 events. 5606/8723 cut-off events. For 983186/983206 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 53698 event pairs, 1258 based on Foata normal form. 20/8741 useless extension candidates. Maximal degree in co-relation 84207. Up to 7962 conditions per place. [2024-06-28 04:05:40,043 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 415 selfloop transitions, 126 changer transitions 0/544 dead transitions. [2024-06-28 04:05:40,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 544 transitions, 10223 flow [2024-06-28 04:05:40,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:05:40,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:05:40,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 04:05:40,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:05:40,044 INFO L175 Difference]: Start difference. First operand has 357 places, 497 transitions, 8349 flow. Second operand 8 states and 144 transitions. [2024-06-28 04:05:40,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 544 transitions, 10223 flow [2024-06-28 04:05:42,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 544 transitions, 10087 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:42,651 INFO L231 Difference]: Finished difference. Result has 360 places, 507 transitions, 8754 flow [2024-06-28 04:05:42,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8213, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8754, PETRI_PLACES=360, PETRI_TRANSITIONS=507} [2024-06-28 04:05:42,652 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 317 predicate places. [2024-06-28 04:05:42,652 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 507 transitions, 8754 flow [2024-06-28 04:05:42,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:42,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:42,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:42,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 04:05:42,652 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:42,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:42,652 INFO L85 PathProgramCache]: Analyzing trace with hash 273730133, now seen corresponding path program 2 times [2024-06-28 04:05:42,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:42,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733117067] [2024-06-28 04:05:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:42,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:44,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:44,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733117067] [2024-06-28 04:05:44,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733117067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:44,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:44,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:05:44,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497939477] [2024-06-28 04:05:44,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:44,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:05:44,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:44,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:05:44,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:05:45,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:05:45,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 507 transitions, 8754 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:45,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:45,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:05:45,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:48,232 INFO L124 PetriNetUnfolderBase]: 5600/8714 cut-off events. [2024-06-28 04:05:48,232 INFO L125 PetriNetUnfolderBase]: For 996390/996410 co-relation queries the response was YES. [2024-06-28 04:05:48,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84854 conditions, 8714 events. 5600/8714 cut-off events. For 996390/996410 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 53698 event pairs, 1226 based on Foata normal form. 22/8734 useless extension candidates. Maximal degree in co-relation 84673. Up to 8499 conditions per place. [2024-06-28 04:05:48,351 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 451 selfloop transitions, 78 changer transitions 0/532 dead transitions. [2024-06-28 04:05:48,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 532 transitions, 9888 flow [2024-06-28 04:05:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:05:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:05:48,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 04:05:48,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:05:48,353 INFO L175 Difference]: Start difference. First operand has 360 places, 507 transitions, 8754 flow. Second operand 8 states and 130 transitions. [2024-06-28 04:05:48,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 532 transitions, 9888 flow [2024-06-28 04:05:51,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 532 transitions, 9653 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 04:05:51,039 INFO L231 Difference]: Finished difference. Result has 364 places, 507 transitions, 8681 flow [2024-06-28 04:05:51,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8519, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8681, PETRI_PLACES=364, PETRI_TRANSITIONS=507} [2024-06-28 04:05:51,040 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 321 predicate places. [2024-06-28 04:05:51,040 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 507 transitions, 8681 flow [2024-06-28 04:05:51,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:51,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:51,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:51,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 04:05:51,041 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:51,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash 58602833, now seen corresponding path program 3 times [2024-06-28 04:05:51,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:51,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965779499] [2024-06-28 04:05:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:51,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:53,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:53,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965779499] [2024-06-28 04:05:53,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965779499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:53,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:53,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:05:53,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060856280] [2024-06-28 04:05:53,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:53,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:05:53,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:53,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:05:53,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:05:53,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:05:53,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 507 transitions, 8681 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:53,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:53,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:05:53,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:56,529 INFO L124 PetriNetUnfolderBase]: 5641/8771 cut-off events. [2024-06-28 04:05:56,530 INFO L125 PetriNetUnfolderBase]: For 1024625/1024645 co-relation queries the response was YES. [2024-06-28 04:05:56,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85493 conditions, 8771 events. 5641/8771 cut-off events. For 1024625/1024645 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 54045 event pairs, 1221 based on Foata normal form. 22/8791 useless extension candidates. Maximal degree in co-relation 85311. Up to 8530 conditions per place. [2024-06-28 04:05:56,669 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 452 selfloop transitions, 91 changer transitions 0/546 dead transitions. [2024-06-28 04:05:56,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 546 transitions, 10398 flow [2024-06-28 04:05:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:05:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:05:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 04:05:56,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35978835978835977 [2024-06-28 04:05:56,670 INFO L175 Difference]: Start difference. First operand has 364 places, 507 transitions, 8681 flow. Second operand 9 states and 136 transitions. [2024-06-28 04:05:56,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 546 transitions, 10398 flow [2024-06-28 04:05:59,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 546 transitions, 10182 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 04:05:59,536 INFO L231 Difference]: Finished difference. Result has 370 places, 522 transitions, 9063 flow [2024-06-28 04:05:59,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8485, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9063, PETRI_PLACES=370, PETRI_TRANSITIONS=522} [2024-06-28 04:05:59,536 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 327 predicate places. [2024-06-28 04:05:59,537 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 522 transitions, 9063 flow [2024-06-28 04:05:59,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:05:59,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:59,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:59,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 04:05:59,537 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:05:59,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1018390193, now seen corresponding path program 1 times [2024-06-28 04:05:59,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:59,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490474367] [2024-06-28 04:05:59,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:59,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:01,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:01,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490474367] [2024-06-28 04:06:01,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490474367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:01,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:01,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:06:01,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254392621] [2024-06-28 04:06:01,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:01,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:06:01,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:01,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:06:01,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:06:01,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:06:01,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 522 transitions, 9063 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:01,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:01,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:06:01,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:04,115 INFO L124 PetriNetUnfolderBase]: 5638/8768 cut-off events. [2024-06-28 04:06:04,115 INFO L125 PetriNetUnfolderBase]: For 1036422/1036465 co-relation queries the response was YES. [2024-06-28 04:06:04,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85643 conditions, 8768 events. 5638/8768 cut-off events. For 1036422/1036465 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 53979 event pairs, 1212 based on Foata normal form. 31/8795 useless extension candidates. Maximal degree in co-relation 85458. Up to 8679 conditions per place. [2024-06-28 04:06:04,259 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 498 selfloop transitions, 36 changer transitions 0/537 dead transitions. [2024-06-28 04:06:04,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 537 transitions, 10265 flow [2024-06-28 04:06:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:06:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:06:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-06-28 04:06:04,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-28 04:06:04,260 INFO L175 Difference]: Start difference. First operand has 370 places, 522 transitions, 9063 flow. Second operand 6 states and 92 transitions. [2024-06-28 04:06:04,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 537 transitions, 10265 flow [2024-06-28 04:06:07,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 537 transitions, 10089 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 04:06:07,608 INFO L231 Difference]: Finished difference. Result has 373 places, 525 transitions, 9072 flow [2024-06-28 04:06:07,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8887, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9072, PETRI_PLACES=373, PETRI_TRANSITIONS=525} [2024-06-28 04:06:07,608 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 330 predicate places. [2024-06-28 04:06:07,608 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 525 transitions, 9072 flow [2024-06-28 04:06:07,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:07,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:07,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:07,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 04:06:07,609 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:07,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:07,610 INFO L85 PathProgramCache]: Analyzing trace with hash 262992997, now seen corresponding path program 2 times [2024-06-28 04:06:07,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:07,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430725611] [2024-06-28 04:06:07,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:09,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:09,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430725611] [2024-06-28 04:06:09,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430725611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:09,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:09,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:09,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948209255] [2024-06-28 04:06:09,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:09,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:09,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:09,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:06:09,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 525 transitions, 9072 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:09,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:09,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:06:09,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:12,466 INFO L124 PetriNetUnfolderBase]: 5645/8778 cut-off events. [2024-06-28 04:06:12,466 INFO L125 PetriNetUnfolderBase]: For 1060916/1060959 co-relation queries the response was YES. [2024-06-28 04:06:12,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85741 conditions, 8778 events. 5645/8778 cut-off events. For 1060916/1060959 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 54062 event pairs, 1218 based on Foata normal form. 33/8807 useless extension candidates. Maximal degree in co-relation 85555. Up to 8678 conditions per place. [2024-06-28 04:06:12,599 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 500 selfloop transitions, 42 changer transitions 0/545 dead transitions. [2024-06-28 04:06:12,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 545 transitions, 10335 flow [2024-06-28 04:06:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:06:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:06:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-28 04:06:12,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35034013605442177 [2024-06-28 04:06:12,600 INFO L175 Difference]: Start difference. First operand has 373 places, 525 transitions, 9072 flow. Second operand 7 states and 103 transitions. [2024-06-28 04:06:12,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 545 transitions, 10335 flow [2024-06-28 04:06:15,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 545 transitions, 10195 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:15,372 INFO L231 Difference]: Finished difference. Result has 375 places, 531 transitions, 9165 flow [2024-06-28 04:06:15,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8932, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9165, PETRI_PLACES=375, PETRI_TRANSITIONS=531} [2024-06-28 04:06:15,372 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 332 predicate places. [2024-06-28 04:06:15,372 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 531 transitions, 9165 flow [2024-06-28 04:06:15,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:15,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:15,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:15,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 04:06:15,373 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:15,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:15,373 INFO L85 PathProgramCache]: Analyzing trace with hash 262636807, now seen corresponding path program 3 times [2024-06-28 04:06:15,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:15,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220526286] [2024-06-28 04:06:15,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:15,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:17,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:17,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220526286] [2024-06-28 04:06:17,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220526286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:17,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:17,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:17,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029733998] [2024-06-28 04:06:17,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:17,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:17,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:17,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:17,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:17,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:06:17,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 531 transitions, 9165 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:17,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:17,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:06:17,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:20,645 INFO L124 PetriNetUnfolderBase]: 5639/8770 cut-off events. [2024-06-28 04:06:20,646 INFO L125 PetriNetUnfolderBase]: For 1050925/1050968 co-relation queries the response was YES. [2024-06-28 04:06:20,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85987 conditions, 8770 events. 5639/8770 cut-off events. For 1050925/1050968 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 54001 event pairs, 1214 based on Foata normal form. 32/8798 useless extension candidates. Maximal degree in co-relation 85801. Up to 8550 conditions per place. [2024-06-28 04:06:20,795 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 495 selfloop transitions, 66 changer transitions 0/564 dead transitions. [2024-06-28 04:06:20,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 564 transitions, 10414 flow [2024-06-28 04:06:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:20,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 04:06:20,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 04:06:20,797 INFO L175 Difference]: Start difference. First operand has 375 places, 531 transitions, 9165 flow. Second operand 8 states and 132 transitions. [2024-06-28 04:06:20,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 564 transitions, 10414 flow [2024-06-28 04:06:23,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 564 transitions, 10217 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:23,752 INFO L231 Difference]: Finished difference. Result has 378 places, 531 transitions, 9112 flow [2024-06-28 04:06:23,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8968, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9112, PETRI_PLACES=378, PETRI_TRANSITIONS=531} [2024-06-28 04:06:23,752 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 335 predicate places. [2024-06-28 04:06:23,753 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 531 transitions, 9112 flow [2024-06-28 04:06:23,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:23,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:23,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:23,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 04:06:23,753 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:23,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2017695495, now seen corresponding path program 4 times [2024-06-28 04:06:23,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:23,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517850281] [2024-06-28 04:06:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:23,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:26,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517850281] [2024-06-28 04:06:26,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517850281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:26,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:26,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:06:26,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57049506] [2024-06-28 04:06:26,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:26,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:06:26,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:06:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:06:26,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:06:26,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 531 transitions, 9112 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:26,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:26,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:06:26,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:29,668 INFO L124 PetriNetUnfolderBase]: 5745/8916 cut-off events. [2024-06-28 04:06:29,668 INFO L125 PetriNetUnfolderBase]: For 1127289/1127332 co-relation queries the response was YES. [2024-06-28 04:06:29,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88860 conditions, 8916 events. 5745/8916 cut-off events. For 1127289/1127332 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 54828 event pairs, 1200 based on Foata normal form. 32/8944 useless extension candidates. Maximal degree in co-relation 88673. Up to 8050 conditions per place. [2024-06-28 04:06:29,810 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 432 selfloop transitions, 142 changer transitions 0/577 dead transitions. [2024-06-28 04:06:29,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 577 transitions, 11279 flow [2024-06-28 04:06:29,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 04:06:29,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:06:29,813 INFO L175 Difference]: Start difference. First operand has 378 places, 531 transitions, 9112 flow. Second operand 8 states and 140 transitions. [2024-06-28 04:06:29,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 577 transitions, 11279 flow [2024-06-28 04:06:33,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 577 transitions, 11128 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 04:06:33,252 INFO L231 Difference]: Finished difference. Result has 379 places, 542 transitions, 9573 flow [2024-06-28 04:06:33,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8973, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9573, PETRI_PLACES=379, PETRI_TRANSITIONS=542} [2024-06-28 04:06:33,253 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2024-06-28 04:06:33,253 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 542 transitions, 9573 flow [2024-06-28 04:06:33,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:33,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:33,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:33,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 04:06:33,253 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:33,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:33,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2017690845, now seen corresponding path program 5 times [2024-06-28 04:06:33,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:33,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886875254] [2024-06-28 04:06:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:33,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:35,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:35,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886875254] [2024-06-28 04:06:35,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886875254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:35,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:35,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:06:35,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382722079] [2024-06-28 04:06:35,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:35,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:06:35,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:35,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:06:35,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:06:35,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:06:35,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 542 transitions, 9573 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:35,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:35,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:06:35,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:38,583 INFO L124 PetriNetUnfolderBase]: 5739/8908 cut-off events. [2024-06-28 04:06:38,583 INFO L125 PetriNetUnfolderBase]: For 1100256/1100299 co-relation queries the response was YES. [2024-06-28 04:06:38,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88876 conditions, 8908 events. 5739/8908 cut-off events. For 1100256/1100299 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 54800 event pairs, 1230 based on Foata normal form. 32/8936 useless extension candidates. Maximal degree in co-relation 88690. Up to 8681 conditions per place. [2024-06-28 04:06:38,733 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 480 selfloop transitions, 81 changer transitions 0/564 dead transitions. [2024-06-28 04:06:38,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 564 transitions, 10763 flow [2024-06-28 04:06:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:38,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-28 04:06:38,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37202380952380953 [2024-06-28 04:06:38,734 INFO L175 Difference]: Start difference. First operand has 379 places, 542 transitions, 9573 flow. Second operand 8 states and 125 transitions. [2024-06-28 04:06:38,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 564 transitions, 10763 flow [2024-06-28 04:06:41,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 564 transitions, 10381 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-28 04:06:41,948 INFO L231 Difference]: Finished difference. Result has 382 places, 542 transitions, 9359 flow [2024-06-28 04:06:41,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9191, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9359, PETRI_PLACES=382, PETRI_TRANSITIONS=542} [2024-06-28 04:06:41,949 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 339 predicate places. [2024-06-28 04:06:41,949 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 542 transitions, 9359 flow [2024-06-28 04:06:41,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:41,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:41,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 04:06:41,950 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:41,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash 505804433, now seen corresponding path program 6 times [2024-06-28 04:06:41,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:41,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630656144] [2024-06-28 04:06:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:41,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:44,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:44,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630656144] [2024-06-28 04:06:44,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630656144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:44,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:44,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:06:44,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287762841] [2024-06-28 04:06:44,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:44,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:06:44,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:44,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:06:44,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:06:44,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:06:44,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 542 transitions, 9359 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:44,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:44,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:06:44,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:47,380 INFO L124 PetriNetUnfolderBase]: 5749/8922 cut-off events. [2024-06-28 04:06:47,380 INFO L125 PetriNetUnfolderBase]: For 1116916/1116959 co-relation queries the response was YES. [2024-06-28 04:06:47,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88581 conditions, 8922 events. 5749/8922 cut-off events. For 1116916/1116959 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 54933 event pairs, 1200 based on Foata normal form. 32/8950 useless extension candidates. Maximal degree in co-relation 88394. Up to 8053 conditions per place. [2024-06-28 04:06:47,531 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 431 selfloop transitions, 143 changer transitions 0/577 dead transitions. [2024-06-28 04:06:47,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 577 transitions, 11085 flow [2024-06-28 04:06:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 04:06:47,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 04:06:47,533 INFO L175 Difference]: Start difference. First operand has 382 places, 542 transitions, 9359 flow. Second operand 8 states and 137 transitions. [2024-06-28 04:06:47,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 577 transitions, 11085 flow [2024-06-28 04:06:50,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 577 transitions, 10921 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 04:06:50,382 INFO L231 Difference]: Finished difference. Result has 384 places, 545 transitions, 9566 flow [2024-06-28 04:06:50,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9195, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9566, PETRI_PLACES=384, PETRI_TRANSITIONS=545} [2024-06-28 04:06:50,383 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-28 04:06:50,383 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 545 transitions, 9566 flow [2024-06-28 04:06:50,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:50,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:50,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:50,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 04:06:50,383 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:50,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1454620787, now seen corresponding path program 7 times [2024-06-28 04:06:50,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:50,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301005467] [2024-06-28 04:06:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:52,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:52,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301005467] [2024-06-28 04:06:52,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301005467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:52,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:52,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:06:52,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762105524] [2024-06-28 04:06:52,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:52,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:06:52,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:52,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:06:52,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:06:52,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:06:52,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 545 transitions, 9566 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:52,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:52,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:06:52,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:56,027 INFO L124 PetriNetUnfolderBase]: 5723/8886 cut-off events. [2024-06-28 04:06:56,027 INFO L125 PetriNetUnfolderBase]: For 1130481/1130524 co-relation queries the response was YES. [2024-06-28 04:06:56,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88479 conditions, 8886 events. 5723/8886 cut-off events. For 1130481/1130524 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 54726 event pairs, 1224 based on Foata normal form. 36/8918 useless extension candidates. Maximal degree in co-relation 88291. Up to 8034 conditions per place. [2024-06-28 04:06:56,195 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 433 selfloop transitions, 137 changer transitions 0/573 dead transitions. [2024-06-28 04:06:56,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 573 transitions, 11020 flow [2024-06-28 04:06:56,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:06:56,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:06:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 04:06:56,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 04:06:56,196 INFO L175 Difference]: Start difference. First operand has 384 places, 545 transitions, 9566 flow. Second operand 8 states and 134 transitions. [2024-06-28 04:06:56,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 573 transitions, 11020 flow [2024-06-28 04:06:59,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 573 transitions, 10612 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-28 04:06:59,457 INFO L231 Difference]: Finished difference. Result has 386 places, 545 transitions, 9440 flow [2024-06-28 04:06:59,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9158, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9440, PETRI_PLACES=386, PETRI_TRANSITIONS=545} [2024-06-28 04:06:59,458 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 343 predicate places. [2024-06-28 04:06:59,458 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 545 transitions, 9440 flow [2024-06-28 04:06:59,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:59,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:59,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:59,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 04:06:59,458 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:06:59,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:59,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1663427805, now seen corresponding path program 8 times [2024-06-28 04:06:59,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:59,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779888546] [2024-06-28 04:06:59,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:59,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:01,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:01,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779888546] [2024-06-28 04:07:01,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779888546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:01,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:01,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:07:01,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212127420] [2024-06-28 04:07:01,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:01,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:07:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:01,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:07:01,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:07:01,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:07:01,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 545 transitions, 9440 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:01,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:01,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:07:01,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:05,126 INFO L124 PetriNetUnfolderBase]: 5705/8862 cut-off events. [2024-06-28 04:07:05,126 INFO L125 PetriNetUnfolderBase]: For 1123373/1123416 co-relation queries the response was YES. [2024-06-28 04:07:05,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87580 conditions, 8862 events. 5705/8862 cut-off events. For 1123373/1123416 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 54543 event pairs, 1222 based on Foata normal form. 36/8894 useless extension candidates. Maximal degree in co-relation 87391. Up to 8472 conditions per place. [2024-06-28 04:07:05,290 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 476 selfloop transitions, 94 changer transitions 0/573 dead transitions. [2024-06-28 04:07:05,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 573 transitions, 10903 flow [2024-06-28 04:07:05,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:07:05,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:07:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 04:07:05,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36428571428571427 [2024-06-28 04:07:05,291 INFO L175 Difference]: Start difference. First operand has 386 places, 545 transitions, 9440 flow. Second operand 10 states and 153 transitions. [2024-06-28 04:07:05,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 573 transitions, 10903 flow [2024-06-28 04:07:08,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 573 transitions, 10611 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 04:07:08,542 INFO L231 Difference]: Finished difference. Result has 389 places, 545 transitions, 9344 flow [2024-06-28 04:07:08,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9148, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9344, PETRI_PLACES=389, PETRI_TRANSITIONS=545} [2024-06-28 04:07:08,543 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-28 04:07:08,543 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 545 transitions, 9344 flow [2024-06-28 04:07:08,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:08,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:08,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:08,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 04:07:08,543 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:08,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1663190655, now seen corresponding path program 9 times [2024-06-28 04:07:08,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:08,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350245399] [2024-06-28 04:07:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:08,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:11,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:11,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350245399] [2024-06-28 04:07:11,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350245399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:11,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:11,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:07:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444391734] [2024-06-28 04:07:11,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:11,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:07:11,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:07:11,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:07:11,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:07:11,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 545 transitions, 9344 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:11,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:11,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:07:11,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:14,319 INFO L124 PetriNetUnfolderBase]: 5679/8826 cut-off events. [2024-06-28 04:07:14,319 INFO L125 PetriNetUnfolderBase]: For 1113374/1113417 co-relation queries the response was YES. [2024-06-28 04:07:14,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86589 conditions, 8826 events. 5679/8826 cut-off events. For 1113374/1113417 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 54321 event pairs, 1208 based on Foata normal form. 36/8858 useless extension candidates. Maximal degree in co-relation 86399. Up to 8453 conditions per place. [2024-06-28 04:07:14,447 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 476 selfloop transitions, 89 changer transitions 0/568 dead transitions. [2024-06-28 04:07:14,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 568 transitions, 10579 flow [2024-06-28 04:07:14,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:14,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 04:07:14,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37797619047619047 [2024-06-28 04:07:14,449 INFO L175 Difference]: Start difference. First operand has 389 places, 545 transitions, 9344 flow. Second operand 8 states and 127 transitions. [2024-06-28 04:07:14,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 568 transitions, 10579 flow [2024-06-28 04:07:17,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 568 transitions, 10245 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-28 04:07:17,681 INFO L231 Difference]: Finished difference. Result has 388 places, 545 transitions, 9197 flow [2024-06-28 04:07:17,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9010, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9197, PETRI_PLACES=388, PETRI_TRANSITIONS=545} [2024-06-28 04:07:17,682 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-28 04:07:17,682 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 545 transitions, 9197 flow [2024-06-28 04:07:17,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:17,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:17,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:17,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 04:07:17,682 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:17,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:17,682 INFO L85 PathProgramCache]: Analyzing trace with hash -208740787, now seen corresponding path program 10 times [2024-06-28 04:07:17,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:17,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387738922] [2024-06-28 04:07:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:17,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:20,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:20,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:20,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387738922] [2024-06-28 04:07:20,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387738922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:20,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:20,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:07:20,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486215782] [2024-06-28 04:07:20,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:20,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:07:20,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:20,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:07:20,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:07:20,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:07:20,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 545 transitions, 9197 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:20,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:20,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:07:20,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:23,275 INFO L124 PetriNetUnfolderBase]: 5661/8802 cut-off events. [2024-06-28 04:07:23,275 INFO L125 PetriNetUnfolderBase]: For 1102556/1102599 co-relation queries the response was YES. [2024-06-28 04:07:23,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85611 conditions, 8802 events. 5661/8802 cut-off events. For 1102556/1102599 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 54221 event pairs, 1197 based on Foata normal form. 36/8834 useless extension candidates. Maximal degree in co-relation 85421. Up to 8097 conditions per place. [2024-06-28 04:07:23,423 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 439 selfloop transitions, 132 changer transitions 0/574 dead transitions. [2024-06-28 04:07:23,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 574 transitions, 10647 flow [2024-06-28 04:07:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:07:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:07:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 04:07:23,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-28 04:07:23,424 INFO L175 Difference]: Start difference. First operand has 388 places, 545 transitions, 9197 flow. Second operand 7 states and 125 transitions. [2024-06-28 04:07:23,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 574 transitions, 10647 flow [2024-06-28 04:07:26,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 574 transitions, 10413 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 04:07:26,975 INFO L231 Difference]: Finished difference. Result has 388 places, 545 transitions, 9251 flow [2024-06-28 04:07:26,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8963, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9251, PETRI_PLACES=388, PETRI_TRANSITIONS=545} [2024-06-28 04:07:26,976 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-28 04:07:26,976 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 545 transitions, 9251 flow [2024-06-28 04:07:26,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:26,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:26,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:26,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 04:07:26,976 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:26,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash -208977937, now seen corresponding path program 11 times [2024-06-28 04:07:26,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:26,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245400736] [2024-06-28 04:07:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:29,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:29,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:29,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245400736] [2024-06-28 04:07:29,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245400736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:29,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:29,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:07:29,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199833419] [2024-06-28 04:07:29,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:29,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:07:29,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:29,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:07:29,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:07:29,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:07:29,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 545 transitions, 9251 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:29,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:29,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:07:29,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:32,922 INFO L124 PetriNetUnfolderBase]: 5643/8778 cut-off events. [2024-06-28 04:07:32,923 INFO L125 PetriNetUnfolderBase]: For 1093534/1093577 co-relation queries the response was YES. [2024-06-28 04:07:33,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85177 conditions, 8778 events. 5643/8778 cut-off events. For 1093534/1093577 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 54136 event pairs, 1194 based on Foata normal form. 36/8810 useless extension candidates. Maximal degree in co-relation 84986. Up to 8086 conditions per place. [2024-06-28 04:07:33,049 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 436 selfloop transitions, 147 changer transitions 0/586 dead transitions. [2024-06-28 04:07:33,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 586 transitions, 10777 flow [2024-06-28 04:07:33,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:07:33,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:07:33,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 04:07:33,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-28 04:07:33,050 INFO L175 Difference]: Start difference. First operand has 388 places, 545 transitions, 9251 flow. Second operand 9 states and 160 transitions. [2024-06-28 04:07:33,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 586 transitions, 10777 flow [2024-06-28 04:07:36,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 586 transitions, 10359 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 04:07:36,433 INFO L231 Difference]: Finished difference. Result has 388 places, 545 transitions, 9155 flow [2024-06-28 04:07:36,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8837, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9155, PETRI_PLACES=388, PETRI_TRANSITIONS=545} [2024-06-28 04:07:36,434 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-28 04:07:36,434 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 545 transitions, 9155 flow [2024-06-28 04:07:36,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:36,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:36,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:36,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 04:07:36,434 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:36,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:36,434 INFO L85 PathProgramCache]: Analyzing trace with hash -386109457, now seen corresponding path program 12 times [2024-06-28 04:07:36,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:36,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690501076] [2024-06-28 04:07:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:36,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:38,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:38,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690501076] [2024-06-28 04:07:38,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690501076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:38,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:38,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:07:38,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447629100] [2024-06-28 04:07:38,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:38,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:07:38,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:38,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:07:38,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:07:38,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:07:38,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 545 transitions, 9155 flow. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:38,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:38,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:07:38,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:41,856 INFO L124 PetriNetUnfolderBase]: 5617/8741 cut-off events. [2024-06-28 04:07:41,856 INFO L125 PetriNetUnfolderBase]: For 1042953/1042971 co-relation queries the response was YES. [2024-06-28 04:07:41,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83859 conditions, 8741 events. 5617/8741 cut-off events. For 1042953/1042971 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 53944 event pairs, 1191 based on Foata normal form. 24/8763 useless extension candidates. Maximal degree in co-relation 83669. Up to 8067 conditions per place. [2024-06-28 04:07:42,004 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 429 selfloop transitions, 156 changer transitions 0/588 dead transitions. [2024-06-28 04:07:42,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 588 transitions, 10495 flow [2024-06-28 04:07:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:07:42,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:07:42,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 04:07:42,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-28 04:07:42,005 INFO L175 Difference]: Start difference. First operand has 388 places, 545 transitions, 9155 flow. Second operand 9 states and 164 transitions. [2024-06-28 04:07:42,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 588 transitions, 10495 flow [2024-06-28 04:07:45,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 588 transitions, 10123 flow, removed 31 selfloop flow, removed 11 redundant places. [2024-06-28 04:07:45,335 INFO L231 Difference]: Finished difference. Result has 386 places, 545 transitions, 9117 flow [2024-06-28 04:07:45,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8783, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9117, PETRI_PLACES=386, PETRI_TRANSITIONS=545} [2024-06-28 04:07:45,336 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 343 predicate places. [2024-06-28 04:07:45,336 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 545 transitions, 9117 flow [2024-06-28 04:07:45,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:45,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:45,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:45,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 04:07:45,337 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:45,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:45,337 INFO L85 PathProgramCache]: Analyzing trace with hash 13633683, now seen corresponding path program 2 times [2024-06-28 04:07:45,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:45,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864453899] [2024-06-28 04:07:45,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:45,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:47,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:47,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:47,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864453899] [2024-06-28 04:07:47,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864453899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:47,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:47,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:47,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243598825] [2024-06-28 04:07:47,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:47,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:47,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:47,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:47,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:47,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:07:47,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 545 transitions, 9117 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:47,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:47,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:07:47,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:50,604 INFO L124 PetriNetUnfolderBase]: 5602/8715 cut-off events. [2024-06-28 04:07:50,604 INFO L125 PetriNetUnfolderBase]: For 975963/975979 co-relation queries the response was YES. [2024-06-28 04:07:50,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83067 conditions, 8715 events. 5602/8715 cut-off events. For 975963/975979 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 53697 event pairs, 1190 based on Foata normal form. 17/8730 useless extension candidates. Maximal degree in co-relation 82879. Up to 8580 conditions per place. [2024-06-28 04:07:50,720 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 518 selfloop transitions, 51 changer transitions 0/572 dead transitions. [2024-06-28 04:07:50,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 572 transitions, 10338 flow [2024-06-28 04:07:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:07:50,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:07:50,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 04:07:50,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 04:07:50,721 INFO L175 Difference]: Start difference. First operand has 386 places, 545 transitions, 9117 flow. Second operand 6 states and 111 transitions. [2024-06-28 04:07:50,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 572 transitions, 10338 flow [2024-06-28 04:07:53,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 572 transitions, 10004 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 04:07:53,615 INFO L231 Difference]: Finished difference. Result has 382 places, 545 transitions, 8915 flow [2024-06-28 04:07:53,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8783, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8915, PETRI_PLACES=382, PETRI_TRANSITIONS=545} [2024-06-28 04:07:53,616 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 339 predicate places. [2024-06-28 04:07:53,616 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 545 transitions, 8915 flow [2024-06-28 04:07:53,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:53,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:53,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:53,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 04:07:53,616 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:53,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash 13634117, now seen corresponding path program 1 times [2024-06-28 04:07:53,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:53,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704156635] [2024-06-28 04:07:53,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:53,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:56,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704156635] [2024-06-28 04:07:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704156635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:56,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:56,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:56,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104891975] [2024-06-28 04:07:56,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:56,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:56,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:56,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:07:56,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 545 transitions, 8915 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:56,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:56,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:07:56,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:59,153 INFO L124 PetriNetUnfolderBase]: 5610/8729 cut-off events. [2024-06-28 04:07:59,153 INFO L125 PetriNetUnfolderBase]: For 945662/945705 co-relation queries the response was YES. [2024-06-28 04:07:59,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82328 conditions, 8729 events. 5610/8729 cut-off events. For 945662/945705 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 53715 event pairs, 1193 based on Foata normal form. 32/8757 useless extension candidates. Maximal degree in co-relation 82141. Up to 8643 conditions per place. [2024-06-28 04:07:59,297 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 526 selfloop transitions, 33 changer transitions 0/562 dead transitions. [2024-06-28 04:07:59,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 562 transitions, 10180 flow [2024-06-28 04:07:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:59,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:59,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-28 04:07:59,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3244047619047619 [2024-06-28 04:07:59,298 INFO L175 Difference]: Start difference. First operand has 382 places, 545 transitions, 8915 flow. Second operand 8 states and 109 transitions. [2024-06-28 04:07:59,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 562 transitions, 10180 flow [2024-06-28 04:08:01,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 562 transitions, 10074 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 04:08:01,634 INFO L231 Difference]: Finished difference. Result has 386 places, 549 transitions, 8985 flow [2024-06-28 04:08:01,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8813, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8985, PETRI_PLACES=386, PETRI_TRANSITIONS=549} [2024-06-28 04:08:01,634 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 343 predicate places. [2024-06-28 04:08:01,635 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 549 transitions, 8985 flow [2024-06-28 04:08:01,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:01,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:01,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:01,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 04:08:01,635 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:01,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:01,635 INFO L85 PathProgramCache]: Analyzing trace with hash 993829727, now seen corresponding path program 2 times [2024-06-28 04:08:01,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:01,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685417303] [2024-06-28 04:08:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:01,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:03,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:03,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685417303] [2024-06-28 04:08:03,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685417303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:03,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:03,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:08:03,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938670471] [2024-06-28 04:08:03,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:03,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:08:03,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:03,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:08:03,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:08:04,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:08:04,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 549 transitions, 8985 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:04,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:04,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:08:04,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:06,696 INFO L124 PetriNetUnfolderBase]: 5605/8722 cut-off events. [2024-06-28 04:08:06,696 INFO L125 PetriNetUnfolderBase]: For 955857/955891 co-relation queries the response was YES. [2024-06-28 04:08:06,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82314 conditions, 8722 events. 5605/8722 cut-off events. For 955857/955891 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 53691 event pairs, 1185 based on Foata normal form. 26/8744 useless extension candidates. Maximal degree in co-relation 82125. Up to 8616 conditions per place. [2024-06-28 04:08:07,076 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 528 selfloop transitions, 34 changer transitions 0/565 dead transitions. [2024-06-28 04:08:07,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 565 transitions, 10216 flow [2024-06-28 04:08:07,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-28 04:08:07,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-28 04:08:07,077 INFO L175 Difference]: Start difference. First operand has 386 places, 549 transitions, 8985 flow. Second operand 8 states and 108 transitions. [2024-06-28 04:08:07,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 565 transitions, 10216 flow [2024-06-28 04:08:10,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 565 transitions, 10099 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 04:08:10,127 INFO L231 Difference]: Finished difference. Result has 389 places, 551 transitions, 9000 flow [2024-06-28 04:08:10,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8870, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9000, PETRI_PLACES=389, PETRI_TRANSITIONS=551} [2024-06-28 04:08:10,127 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-28 04:08:10,127 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 551 transitions, 9000 flow [2024-06-28 04:08:10,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:10,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:10,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:10,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 04:08:10,128 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:10,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:10,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1457468819, now seen corresponding path program 1 times [2024-06-28 04:08:10,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:10,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856091620] [2024-06-28 04:08:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:10,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:13,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:13,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856091620] [2024-06-28 04:08:13,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856091620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:13,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:13,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:13,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786897565] [2024-06-28 04:08:13,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:13,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:13,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:13,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:13,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:13,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:08:13,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 551 transitions, 9000 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:13,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:13,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:08:13,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:16,117 INFO L124 PetriNetUnfolderBase]: 5613/8735 cut-off events. [2024-06-28 04:08:16,118 INFO L125 PetriNetUnfolderBase]: For 973299/973299 co-relation queries the response was YES. [2024-06-28 04:08:16,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82619 conditions, 8735 events. 5613/8735 cut-off events. For 973299/973299 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 53657 event pairs, 1144 based on Foata normal form. 2/8735 useless extension candidates. Maximal degree in co-relation 82430. Up to 8611 conditions per place. [2024-06-28 04:08:16,261 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 547 selfloop transitions, 33 changer transitions 0/583 dead transitions. [2024-06-28 04:08:16,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 583 transitions, 10560 flow [2024-06-28 04:08:16,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:16,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:16,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 04:08:16,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 04:08:16,262 INFO L175 Difference]: Start difference. First operand has 389 places, 551 transitions, 9000 flow. Second operand 8 states and 123 transitions. [2024-06-28 04:08:16,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 583 transitions, 10560 flow [2024-06-28 04:08:19,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 583 transitions, 10434 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 04:08:19,717 INFO L231 Difference]: Finished difference. Result has 391 places, 555 transitions, 9077 flow [2024-06-28 04:08:19,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8874, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9077, PETRI_PLACES=391, PETRI_TRANSITIONS=555} [2024-06-28 04:08:19,718 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 348 predicate places. [2024-06-28 04:08:19,718 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 555 transitions, 9077 flow [2024-06-28 04:08:19,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:19,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:19,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:19,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 04:08:19,719 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:19,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:19,719 INFO L85 PathProgramCache]: Analyzing trace with hash 506083991, now seen corresponding path program 2 times [2024-06-28 04:08:19,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:19,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993370562] [2024-06-28 04:08:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:19,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:23,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:23,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:23,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993370562] [2024-06-28 04:08:23,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993370562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:23,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:23,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:23,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208568633] [2024-06-28 04:08:23,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:23,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:23,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:23,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:08:23,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 555 transitions, 9077 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:23,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:23,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:08:23,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:26,402 INFO L124 PetriNetUnfolderBase]: 5621/8747 cut-off events. [2024-06-28 04:08:26,402 INFO L125 PetriNetUnfolderBase]: For 992355/992355 co-relation queries the response was YES. [2024-06-28 04:08:26,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82903 conditions, 8747 events. 5621/8747 cut-off events. For 992355/992355 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 53883 event pairs, 1188 based on Foata normal form. 2/8747 useless extension candidates. Maximal degree in co-relation 82714. Up to 8660 conditions per place. [2024-06-28 04:08:26,540 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 546 selfloop transitions, 31 changer transitions 0/580 dead transitions. [2024-06-28 04:08:26,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 580 transitions, 10375 flow [2024-06-28 04:08:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:26,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-28 04:08:26,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35119047619047616 [2024-06-28 04:08:26,541 INFO L175 Difference]: Start difference. First operand has 391 places, 555 transitions, 9077 flow. Second operand 8 states and 118 transitions. [2024-06-28 04:08:26,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 580 transitions, 10375 flow [2024-06-28 04:08:29,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 580 transitions, 10234 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-28 04:08:29,848 INFO L231 Difference]: Finished difference. Result has 395 places, 557 transitions, 9075 flow [2024-06-28 04:08:29,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8960, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9075, PETRI_PLACES=395, PETRI_TRANSITIONS=557} [2024-06-28 04:08:29,848 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 352 predicate places. [2024-06-28 04:08:29,848 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 557 transitions, 9075 flow [2024-06-28 04:08:29,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:29,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:29,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:29,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 04:08:29,849 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:29,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1339320689, now seen corresponding path program 3 times [2024-06-28 04:08:29,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:29,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260913850] [2024-06-28 04:08:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:29,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:32,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:32,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260913850] [2024-06-28 04:08:32,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260913850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:32,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:32,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:32,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084036835] [2024-06-28 04:08:32,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:32,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:32,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:32,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:32,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:32,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:08:32,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 557 transitions, 9075 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:32,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:32,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:08:32,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:35,736 INFO L124 PetriNetUnfolderBase]: 5629/8759 cut-off events. [2024-06-28 04:08:35,736 INFO L125 PetriNetUnfolderBase]: For 1010421/1010421 co-relation queries the response was YES. [2024-06-28 04:08:35,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83073 conditions, 8759 events. 5629/8759 cut-off events. For 1010421/1010421 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 54005 event pairs, 1192 based on Foata normal form. 2/8759 useless extension candidates. Maximal degree in co-relation 82882. Up to 8708 conditions per place. [2024-06-28 04:08:35,901 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 553 selfloop transitions, 21 changer transitions 0/577 dead transitions. [2024-06-28 04:08:35,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 577 transitions, 10325 flow [2024-06-28 04:08:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-28 04:08:35,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 04:08:35,902 INFO L175 Difference]: Start difference. First operand has 395 places, 557 transitions, 9075 flow. Second operand 8 states and 112 transitions. [2024-06-28 04:08:35,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 577 transitions, 10325 flow [2024-06-28 04:08:39,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 577 transitions, 10230 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 04:08:39,319 INFO L231 Difference]: Finished difference. Result has 397 places, 559 transitions, 9079 flow [2024-06-28 04:08:39,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8980, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9079, PETRI_PLACES=397, PETRI_TRANSITIONS=559} [2024-06-28 04:08:39,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 354 predicate places. [2024-06-28 04:08:39,319 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 559 transitions, 9079 flow [2024-06-28 04:08:39,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:39,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:39,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:39,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 04:08:39,319 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:39,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:39,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1126024545, now seen corresponding path program 1 times [2024-06-28 04:08:39,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:39,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098339483] [2024-06-28 04:08:39,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:39,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:42,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:42,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098339483] [2024-06-28 04:08:42,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098339483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:42,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:42,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:42,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34539385] [2024-06-28 04:08:42,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:42,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:43,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:08:43,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 559 transitions, 9079 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:43,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:43,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:08:43,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:46,292 INFO L124 PetriNetUnfolderBase]: 5645/8782 cut-off events. [2024-06-28 04:08:46,292 INFO L125 PetriNetUnfolderBase]: For 1038804/1038838 co-relation queries the response was YES. [2024-06-28 04:08:46,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83387 conditions, 8782 events. 5645/8782 cut-off events. For 1038804/1038838 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 54149 event pairs, 1204 based on Foata normal form. 28/8806 useless extension candidates. Maximal degree in co-relation 83195. Up to 8549 conditions per place. [2024-06-28 04:08:46,421 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 500 selfloop transitions, 78 changer transitions 0/581 dead transitions. [2024-06-28 04:08:46,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 581 transitions, 10369 flow [2024-06-28 04:08:46,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:46,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:46,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 04:08:46,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-28 04:08:46,422 INFO L175 Difference]: Start difference. First operand has 397 places, 559 transitions, 9079 flow. Second operand 8 states and 123 transitions. [2024-06-28 04:08:46,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 581 transitions, 10369 flow [2024-06-28 04:08:49,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 581 transitions, 10290 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 04:08:49,425 INFO L231 Difference]: Finished difference. Result has 399 places, 562 transitions, 9243 flow [2024-06-28 04:08:49,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9000, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9243, PETRI_PLACES=399, PETRI_TRANSITIONS=562} [2024-06-28 04:08:49,426 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 356 predicate places. [2024-06-28 04:08:49,426 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 562 transitions, 9243 flow [2024-06-28 04:08:49,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:49,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:49,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:49,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 04:08:49,426 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:49,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:49,426 INFO L85 PathProgramCache]: Analyzing trace with hash -208731859, now seen corresponding path program 4 times [2024-06-28 04:08:49,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:49,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314413080] [2024-06-28 04:08:49,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:49,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:52,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:52,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:52,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314413080] [2024-06-28 04:08:52,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314413080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:52,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:52,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:52,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969589903] [2024-06-28 04:08:52,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:52,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:52,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:52,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:52,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:08:52,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 562 transitions, 9243 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:52,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:52,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:08:52,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:55,444 INFO L124 PetriNetUnfolderBase]: 5640/8776 cut-off events. [2024-06-28 04:08:55,445 INFO L125 PetriNetUnfolderBase]: For 1036539/1036539 co-relation queries the response was YES. [2024-06-28 04:08:55,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83600 conditions, 8776 events. 5640/8776 cut-off events. For 1036539/1036539 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 53983 event pairs, 1141 based on Foata normal form. 2/8776 useless extension candidates. Maximal degree in co-relation 83407. Up to 8669 conditions per place. [2024-06-28 04:08:55,603 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 552 selfloop transitions, 32 changer transitions 0/587 dead transitions. [2024-06-28 04:08:55,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 587 transitions, 10487 flow [2024-06-28 04:08:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:08:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:08:55,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 04:08:55,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:08:55,607 INFO L175 Difference]: Start difference. First operand has 399 places, 562 transitions, 9243 flow. Second operand 7 states and 112 transitions. [2024-06-28 04:08:55,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 587 transitions, 10487 flow [2024-06-28 04:08:58,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 587 transitions, 10237 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 04:08:58,977 INFO L231 Difference]: Finished difference. Result has 400 places, 562 transitions, 9068 flow [2024-06-28 04:08:58,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8993, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9068, PETRI_PLACES=400, PETRI_TRANSITIONS=562} [2024-06-28 04:08:58,978 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 357 predicate places. [2024-06-28 04:08:58,978 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 562 transitions, 9068 flow [2024-06-28 04:08:58,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:58,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:58,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:58,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 04:08:58,978 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:58,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:58,979 INFO L85 PathProgramCache]: Analyzing trace with hash -208547161, now seen corresponding path program 2 times [2024-06-28 04:08:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:58,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387108806] [2024-06-28 04:08:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:58,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:01,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:01,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387108806] [2024-06-28 04:09:01,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387108806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:01,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:01,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:01,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896806288] [2024-06-28 04:09:01,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:01,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:01,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:01,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:01,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:01,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:09:01,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 562 transitions, 9068 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:01,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:01,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:09:01,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:04,804 INFO L124 PetriNetUnfolderBase]: 5656/8799 cut-off events. [2024-06-28 04:09:04,804 INFO L125 PetriNetUnfolderBase]: For 1065856/1065890 co-relation queries the response was YES. [2024-06-28 04:09:04,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83700 conditions, 8799 events. 5656/8799 cut-off events. For 1065856/1065890 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 54267 event pairs, 1203 based on Foata normal form. 28/8823 useless extension candidates. Maximal degree in co-relation 83506. Up to 8554 conditions per place. [2024-06-28 04:09:04,948 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 495 selfloop transitions, 84 changer transitions 0/582 dead transitions. [2024-06-28 04:09:04,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 582 transitions, 10357 flow [2024-06-28 04:09:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:09:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:09:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-06-28 04:09:04,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741496598639456 [2024-06-28 04:09:04,949 INFO L175 Difference]: Start difference. First operand has 400 places, 562 transitions, 9068 flow. Second operand 7 states and 110 transitions. [2024-06-28 04:09:04,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 582 transitions, 10357 flow [2024-06-28 04:09:08,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 582 transitions, 10284 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 04:09:08,766 INFO L231 Difference]: Finished difference. Result has 401 places, 565 transitions, 9260 flow [2024-06-28 04:09:08,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8995, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9260, PETRI_PLACES=401, PETRI_TRANSITIONS=565} [2024-06-28 04:09:08,766 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 358 predicate places. [2024-06-28 04:09:08,766 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 565 transitions, 9260 flow [2024-06-28 04:09:08,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:08,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:08,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:08,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 04:09:08,767 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:08,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:08,767 INFO L85 PathProgramCache]: Analyzing trace with hash 19353989, now seen corresponding path program 3 times [2024-06-28 04:09:08,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:08,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427400215] [2024-06-28 04:09:08,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:08,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:11,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:11,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427400215] [2024-06-28 04:09:11,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427400215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:11,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:11,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:11,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078662258] [2024-06-28 04:09:11,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:11,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:11,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:09:11,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 565 transitions, 9260 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:11,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:11,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:09:11,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:14,378 INFO L124 PetriNetUnfolderBase]: 5672/8826 cut-off events. [2024-06-28 04:09:14,378 INFO L125 PetriNetUnfolderBase]: For 1068697/1068745 co-relation queries the response was YES. [2024-06-28 04:09:14,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84287 conditions, 8826 events. 5672/8826 cut-off events. For 1068697/1068745 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 54491 event pairs, 1234 based on Foata normal form. 36/8858 useless extension candidates. Maximal degree in co-relation 84092. Up to 8590 conditions per place. [2024-06-28 04:09:14,546 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 497 selfloop transitions, 81 changer transitions 0/581 dead transitions. [2024-06-28 04:09:14,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 581 transitions, 10541 flow [2024-06-28 04:09:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:09:14,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:09:14,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-06-28 04:09:14,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36054421768707484 [2024-06-28 04:09:14,547 INFO L175 Difference]: Start difference. First operand has 401 places, 565 transitions, 9260 flow. Second operand 7 states and 106 transitions. [2024-06-28 04:09:14,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 581 transitions, 10541 flow [2024-06-28 04:09:17,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 581 transitions, 10303 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 04:09:17,872 INFO L231 Difference]: Finished difference. Result has 403 places, 568 transitions, 9283 flow [2024-06-28 04:09:17,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9028, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9283, PETRI_PLACES=403, PETRI_TRANSITIONS=568} [2024-06-28 04:09:17,872 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 360 predicate places. [2024-06-28 04:09:17,872 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 568 transitions, 9283 flow [2024-06-28 04:09:17,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:17,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:17,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:17,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 04:09:17,873 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:17,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:17,873 INFO L85 PathProgramCache]: Analyzing trace with hash 27924869, now seen corresponding path program 4 times [2024-06-28 04:09:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632402895] [2024-06-28 04:09:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:20,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:20,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632402895] [2024-06-28 04:09:20,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632402895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:20,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:20,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:20,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701945440] [2024-06-28 04:09:20,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:20,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:20,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:20,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:20,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:09:20,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 568 transitions, 9283 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:20,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:20,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:09:20,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:24,081 INFO L124 PetriNetUnfolderBase]: 5675/8831 cut-off events. [2024-06-28 04:09:24,081 INFO L125 PetriNetUnfolderBase]: For 1058530/1058578 co-relation queries the response was YES. [2024-06-28 04:09:24,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83966 conditions, 8831 events. 5675/8831 cut-off events. For 1058530/1058578 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 54524 event pairs, 1213 based on Foata normal form. 36/8863 useless extension candidates. Maximal degree in co-relation 83770. Up to 8543 conditions per place. [2024-06-28 04:09:24,298 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 490 selfloop transitions, 91 changer transitions 0/584 dead transitions. [2024-06-28 04:09:24,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 584 transitions, 10564 flow [2024-06-28 04:09:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:09:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:09:24,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-06-28 04:09:24,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36054421768707484 [2024-06-28 04:09:24,300 INFO L175 Difference]: Start difference. First operand has 403 places, 568 transitions, 9283 flow. Second operand 7 states and 106 transitions. [2024-06-28 04:09:24,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 584 transitions, 10564 flow [2024-06-28 04:09:28,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 584 transitions, 10336 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 04:09:28,222 INFO L231 Difference]: Finished difference. Result has 405 places, 571 transitions, 9336 flow [2024-06-28 04:09:28,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9055, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9336, PETRI_PLACES=405, PETRI_TRANSITIONS=571} [2024-06-28 04:09:28,223 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 362 predicate places. [2024-06-28 04:09:28,223 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 571 transitions, 9336 flow [2024-06-28 04:09:28,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:28,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:28,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:28,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 04:09:28,223 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:28,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:28,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1666188786, now seen corresponding path program 1 times [2024-06-28 04:09:28,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:28,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078158326] [2024-06-28 04:09:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:28,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:30,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:30,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078158326] [2024-06-28 04:09:30,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078158326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:30,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:30,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:09:30,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909167723] [2024-06-28 04:09:30,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:30,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:09:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:09:30,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:09:30,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:09:30,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 571 transitions, 9336 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:30,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:30,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:09:30,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:33,856 INFO L124 PetriNetUnfolderBase]: 5770/8973 cut-off events. [2024-06-28 04:09:33,857 INFO L125 PetriNetUnfolderBase]: For 1147325/1147359 co-relation queries the response was YES. [2024-06-28 04:09:33,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86521 conditions, 8973 events. 5770/8973 cut-off events. For 1147325/1147359 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 55235 event pairs, 1067 based on Foata normal form. 32/9001 useless extension candidates. Maximal degree in co-relation 86324. Up to 8477 conditions per place. [2024-06-28 04:09:33,990 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 551 selfloop transitions, 69 changer transitions 0/623 dead transitions. [2024-06-28 04:09:33,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 623 transitions, 11162 flow [2024-06-28 04:09:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:09:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:09:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 04:09:33,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:09:33,991 INFO L175 Difference]: Start difference. First operand has 405 places, 571 transitions, 9336 flow. Second operand 9 states and 153 transitions. [2024-06-28 04:09:33,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 623 transitions, 11162 flow [2024-06-28 04:09:37,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 623 transitions, 10908 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 04:09:37,106 INFO L231 Difference]: Finished difference. Result has 410 places, 575 transitions, 9316 flow [2024-06-28 04:09:37,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9082, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9316, PETRI_PLACES=410, PETRI_TRANSITIONS=575} [2024-06-28 04:09:37,107 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 367 predicate places. [2024-06-28 04:09:37,107 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 575 transitions, 9316 flow [2024-06-28 04:09:37,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:37,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:37,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:37,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 04:09:37,107 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:37,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1673598096, now seen corresponding path program 2 times [2024-06-28 04:09:37,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:37,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947865155] [2024-06-28 04:09:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:37,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:39,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:39,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947865155] [2024-06-28 04:09:39,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947865155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:39,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:39,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:09:39,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482687306] [2024-06-28 04:09:39,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:39,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:09:39,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:09:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:09:39,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:09:39,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 575 transitions, 9316 flow. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:39,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:39,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:09:39,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:43,000 INFO L124 PetriNetUnfolderBase]: 5878/9137 cut-off events. [2024-06-28 04:09:43,001 INFO L125 PetriNetUnfolderBase]: For 1226221/1226255 co-relation queries the response was YES. [2024-06-28 04:09:43,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89377 conditions, 9137 events. 5878/9137 cut-off events. For 1226221/1226255 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 56599 event pairs, 1228 based on Foata normal form. 32/9165 useless extension candidates. Maximal degree in co-relation 89178. Up to 8799 conditions per place. [2024-06-28 04:09:43,163 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 555 selfloop transitions, 67 changer transitions 0/625 dead transitions. [2024-06-28 04:09:43,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 625 transitions, 11168 flow [2024-06-28 04:09:43,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:09:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:09:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 04:09:43,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-28 04:09:43,164 INFO L175 Difference]: Start difference. First operand has 410 places, 575 transitions, 9316 flow. Second operand 10 states and 162 transitions. [2024-06-28 04:09:43,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 625 transitions, 11168 flow [2024-06-28 04:09:48,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 625 transitions, 10981 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:09:48,063 INFO L231 Difference]: Finished difference. Result has 415 places, 579 transitions, 9373 flow [2024-06-28 04:09:48,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9129, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9373, PETRI_PLACES=415, PETRI_TRANSITIONS=579} [2024-06-28 04:09:48,064 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 372 predicate places. [2024-06-28 04:09:48,064 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 579 transitions, 9373 flow [2024-06-28 04:09:48,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:48,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:48,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:48,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 04:09:48,064 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:48,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:48,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1673607396, now seen corresponding path program 3 times [2024-06-28 04:09:48,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:48,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595473654] [2024-06-28 04:09:48,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:48,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:50,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:50,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595473654] [2024-06-28 04:09:50,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595473654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:50,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:50,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:50,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016884594] [2024-06-28 04:09:50,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:50,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:50,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:50,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:50,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:50,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:09:50,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 579 transitions, 9373 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:50,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:50,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:09:50,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:53,798 INFO L124 PetriNetUnfolderBase]: 5850/9097 cut-off events. [2024-06-28 04:09:53,798 INFO L125 PetriNetUnfolderBase]: For 1209492/1209526 co-relation queries the response was YES. [2024-06-28 04:09:53,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87748 conditions, 9097 events. 5850/9097 cut-off events. For 1209492/1209526 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 56337 event pairs, 1226 based on Foata normal form. 36/9129 useless extension candidates. Maximal degree in co-relation 87548. Up to 8825 conditions per place. [2024-06-28 04:09:53,962 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 551 selfloop transitions, 67 changer transitions 0/621 dead transitions. [2024-06-28 04:09:53,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 621 transitions, 10870 flow [2024-06-28 04:09:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:09:53,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:09:53,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 04:09:53,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3593073593073593 [2024-06-28 04:09:53,964 INFO L175 Difference]: Start difference. First operand has 415 places, 579 transitions, 9373 flow. Second operand 11 states and 166 transitions. [2024-06-28 04:09:53,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 621 transitions, 10870 flow [2024-06-28 04:09:58,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 621 transitions, 10762 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 04:09:58,194 INFO L231 Difference]: Finished difference. Result has 420 places, 579 transitions, 9405 flow [2024-06-28 04:09:58,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9265, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9405, PETRI_PLACES=420, PETRI_TRANSITIONS=579} [2024-06-28 04:09:58,194 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 377 predicate places. [2024-06-28 04:09:58,194 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 579 transitions, 9405 flow [2024-06-28 04:09:58,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:58,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:58,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:58,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 04:09:58,195 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:58,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1754726646, now seen corresponding path program 1 times [2024-06-28 04:09:58,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:58,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845025764] [2024-06-28 04:09:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:58,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:01,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845025764] [2024-06-28 04:10:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845025764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:01,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:01,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:10:01,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188239819] [2024-06-28 04:10:01,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:01,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:10:01,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:01,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:10:01,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:10:01,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:10:01,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 579 transitions, 9405 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:01,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:01,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:10:01,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:04,675 INFO L124 PetriNetUnfolderBase]: 5900/9164 cut-off events. [2024-06-28 04:10:04,675 INFO L125 PetriNetUnfolderBase]: For 1206800/1206814 co-relation queries the response was YES. [2024-06-28 04:10:04,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89496 conditions, 9164 events. 5900/9164 cut-off events. For 1206800/1206814 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 56721 event pairs, 1165 based on Foata normal form. 16/9178 useless extension candidates. Maximal degree in co-relation 89294. Up to 8928 conditions per place. [2024-06-28 04:10:04,824 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 560 selfloop transitions, 65 changer transitions 0/628 dead transitions. [2024-06-28 04:10:04,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 628 transitions, 11298 flow [2024-06-28 04:10:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:10:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:10:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:10:04,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-28 04:10:04,826 INFO L175 Difference]: Start difference. First operand has 420 places, 579 transitions, 9405 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:10:04,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 628 transitions, 11298 flow [2024-06-28 04:10:08,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 628 transitions, 11164 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 04:10:08,510 INFO L231 Difference]: Finished difference. Result has 421 places, 586 transitions, 9704 flow [2024-06-28 04:10:08,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9271, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9704, PETRI_PLACES=421, PETRI_TRANSITIONS=586} [2024-06-28 04:10:08,510 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 378 predicate places. [2024-06-28 04:10:08,510 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 586 transitions, 9704 flow [2024-06-28 04:10:08,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:08,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:08,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:08,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 04:10:08,511 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:08,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:08,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1332260662, now seen corresponding path program 2 times [2024-06-28 04:10:08,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:08,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553732937] [2024-06-28 04:10:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:08,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:11,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:11,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553732937] [2024-06-28 04:10:11,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553732937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:11,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:11,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:10:11,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936931800] [2024-06-28 04:10:11,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:11,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:10:11,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:11,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:10:11,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:10:11,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:10:11,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 586 transitions, 9704 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:11,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:11,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:10:11,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:15,612 INFO L124 PetriNetUnfolderBase]: 5920/9192 cut-off events. [2024-06-28 04:10:15,612 INFO L125 PetriNetUnfolderBase]: For 1238273/1238287 co-relation queries the response was YES. [2024-06-28 04:10:15,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90663 conditions, 9192 events. 5920/9192 cut-off events. For 1238273/1238287 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 56863 event pairs, 1231 based on Foata normal form. 16/9206 useless extension candidates. Maximal degree in co-relation 90459. Up to 9017 conditions per place. [2024-06-28 04:10:15,756 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 562 selfloop transitions, 65 changer transitions 0/630 dead transitions. [2024-06-28 04:10:15,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 630 transitions, 11292 flow [2024-06-28 04:10:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:10:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:10:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:10:15,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 04:10:15,758 INFO L175 Difference]: Start difference. First operand has 421 places, 586 transitions, 9704 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:10:15,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 630 transitions, 11292 flow [2024-06-28 04:10:19,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 630 transitions, 11011 flow, removed 100 selfloop flow, removed 5 redundant places. [2024-06-28 04:10:19,356 INFO L231 Difference]: Finished difference. Result has 425 places, 595 transitions, 9779 flow [2024-06-28 04:10:19,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9469, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9779, PETRI_PLACES=425, PETRI_TRANSITIONS=595} [2024-06-28 04:10:19,357 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 382 predicate places. [2024-06-28 04:10:19,357 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 595 transitions, 9779 flow [2024-06-28 04:10:19,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:19,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:19,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:19,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 04:10:19,357 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:19,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1332260848, now seen corresponding path program 1 times [2024-06-28 04:10:19,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:19,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131616995] [2024-06-28 04:10:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:19,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:21,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:21,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131616995] [2024-06-28 04:10:21,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131616995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:21,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:21,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:10:21,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383663677] [2024-06-28 04:10:21,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:21,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:10:21,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:22,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:10:22,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:10:22,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:10:22,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 595 transitions, 9779 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:22,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:22,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:10:22,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:25,094 INFO L124 PetriNetUnfolderBase]: 5977/9273 cut-off events. [2024-06-28 04:10:25,095 INFO L125 PetriNetUnfolderBase]: For 1291267/1291301 co-relation queries the response was YES. [2024-06-28 04:10:25,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91921 conditions, 9273 events. 5977/9273 cut-off events. For 1291267/1291301 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 57413 event pairs, 1242 based on Foata normal form. 28/9297 useless extension candidates. Maximal degree in co-relation 91715. Up to 8989 conditions per place. [2024-06-28 04:10:25,316 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 562 selfloop transitions, 70 changer transitions 0/635 dead transitions. [2024-06-28 04:10:25,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 635 transitions, 11651 flow [2024-06-28 04:10:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 04:10:25,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-28 04:10:25,317 INFO L175 Difference]: Start difference. First operand has 425 places, 595 transitions, 9779 flow. Second operand 8 states and 131 transitions. [2024-06-28 04:10:25,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 635 transitions, 11651 flow [2024-06-28 04:10:30,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 635 transitions, 11456 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 04:10:30,109 INFO L231 Difference]: Finished difference. Result has 428 places, 604 transitions, 9934 flow [2024-06-28 04:10:30,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9584, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9934, PETRI_PLACES=428, PETRI_TRANSITIONS=604} [2024-06-28 04:10:30,110 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 385 predicate places. [2024-06-28 04:10:30,110 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 604 transitions, 9934 flow [2024-06-28 04:10:30,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:30,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:30,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:30,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 04:10:30,110 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:30,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:30,111 INFO L85 PathProgramCache]: Analyzing trace with hash -550591484, now seen corresponding path program 2 times [2024-06-28 04:10:30,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:30,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658677437] [2024-06-28 04:10:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:30,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658677437] [2024-06-28 04:10:32,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658677437] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:32,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:32,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:10:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593222351] [2024-06-28 04:10:32,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:32,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:10:32,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:10:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:10:32,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:10:32,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 604 transitions, 9934 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:32,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:32,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:10:32,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:35,545 INFO L124 PetriNetUnfolderBase]: 5987/9287 cut-off events. [2024-06-28 04:10:35,545 INFO L125 PetriNetUnfolderBase]: For 1303689/1303723 co-relation queries the response was YES. [2024-06-28 04:10:35,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92873 conditions, 9287 events. 5987/9287 cut-off events. For 1303689/1303723 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 57502 event pairs, 1241 based on Foata normal form. 26/9309 useless extension candidates. Maximal degree in co-relation 92665. Up to 9134 conditions per place. [2024-06-28 04:10:35,732 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 577 selfloop transitions, 51 changer transitions 0/631 dead transitions. [2024-06-28 04:10:35,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 631 transitions, 11403 flow [2024-06-28 04:10:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 04:10:35,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601190476190476 [2024-06-28 04:10:35,733 INFO L175 Difference]: Start difference. First operand has 428 places, 604 transitions, 9934 flow. Second operand 8 states and 121 transitions. [2024-06-28 04:10:35,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 631 transitions, 11403 flow [2024-06-28 04:10:40,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 631 transitions, 11256 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 04:10:40,523 INFO L231 Difference]: Finished difference. Result has 433 places, 607 transitions, 10013 flow [2024-06-28 04:10:40,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9803, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10013, PETRI_PLACES=433, PETRI_TRANSITIONS=607} [2024-06-28 04:10:40,524 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 390 predicate places. [2024-06-28 04:10:40,524 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 607 transitions, 10013 flow [2024-06-28 04:10:40,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:40,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:40,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:40,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 04:10:40,524 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:40,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:40,524 INFO L85 PathProgramCache]: Analyzing trace with hash -550828820, now seen corresponding path program 3 times [2024-06-28 04:10:40,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:40,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251097333] [2024-06-28 04:10:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:40,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:43,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:43,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:43,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251097333] [2024-06-28 04:10:43,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251097333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:43,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:43,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:10:43,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680580687] [2024-06-28 04:10:43,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:43,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:10:43,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:43,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:10:43,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:10:43,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:10:43,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 607 transitions, 10013 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:43,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:43,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:10:43,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:46,655 INFO L124 PetriNetUnfolderBase]: 6007/9313 cut-off events. [2024-06-28 04:10:46,656 INFO L125 PetriNetUnfolderBase]: For 1328911/1328925 co-relation queries the response was YES. [2024-06-28 04:10:46,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93423 conditions, 9313 events. 6007/9313 cut-off events. For 1328911/1328925 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 57629 event pairs, 1238 based on Foata normal form. 16/9327 useless extension candidates. Maximal degree in co-relation 93213. Up to 9178 conditions per place. [2024-06-28 04:10:46,834 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 589 selfloop transitions, 54 changer transitions 0/646 dead transitions. [2024-06-28 04:10:46,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 646 transitions, 11573 flow [2024-06-28 04:10:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:10:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:10:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 04:10:46,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-28 04:10:46,835 INFO L175 Difference]: Start difference. First operand has 433 places, 607 transitions, 10013 flow. Second operand 9 states and 140 transitions. [2024-06-28 04:10:46,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 646 transitions, 11573 flow [2024-06-28 04:10:51,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 646 transitions, 11393 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 04:10:51,906 INFO L231 Difference]: Finished difference. Result has 437 places, 616 transitions, 10151 flow [2024-06-28 04:10:51,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9833, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10151, PETRI_PLACES=437, PETRI_TRANSITIONS=616} [2024-06-28 04:10:51,906 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 394 predicate places. [2024-06-28 04:10:51,906 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 616 transitions, 10151 flow [2024-06-28 04:10:51,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:51,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:51,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:51,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 04:10:51,907 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:51,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:51,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1698293056, now seen corresponding path program 3 times [2024-06-28 04:10:51,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:51,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553901859] [2024-06-28 04:10:51,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:51,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:54,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:54,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553901859] [2024-06-28 04:10:54,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553901859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:54,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:54,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:10:54,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969299376] [2024-06-28 04:10:54,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:54,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:10:54,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:54,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:10:54,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:10:54,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2024-06-28 04:10:54,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 616 transitions, 10151 flow. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:54,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:54,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2024-06-28 04:10:54,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:57,857 INFO L124 PetriNetUnfolderBase]: 6017/9329 cut-off events. [2024-06-28 04:10:57,857 INFO L125 PetriNetUnfolderBase]: For 1354506/1354540 co-relation queries the response was YES. [2024-06-28 04:10:57,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93775 conditions, 9329 events. 6017/9329 cut-off events. For 1354506/1354540 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 57744 event pairs, 1242 based on Foata normal form. 26/9351 useless extension candidates. Maximal degree in co-relation 93563. Up to 9162 conditions per place. [2024-06-28 04:10:58,031 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 583 selfloop transitions, 58 changer transitions 0/644 dead transitions. [2024-06-28 04:10:58,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 644 transitions, 11648 flow [2024-06-28 04:10:58,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 04:10:58,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 04:10:58,032 INFO L175 Difference]: Start difference. First operand has 437 places, 616 transitions, 10151 flow. Second operand 8 states and 124 transitions. [2024-06-28 04:10:58,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 644 transitions, 11648 flow Killed by 15