./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe000_power.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe000_power.oepc.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/safe000_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe000_power.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:49:32,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:49:32,564 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:49:32,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:49:32,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:49:32,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:49:32,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:49:32,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:49:32,589 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:49:32,592 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:49:32,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:49:32,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:49:32,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:49:32,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:49:32,594 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:49:32,594 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:49:32,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:49:32,595 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:49:32,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:49:32,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:49:32,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:49:32,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:49:32,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:49:32,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:49:32,596 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:49:32,597 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:49:32,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:49:32,597 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:49:32,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:49:32,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:49:32,598 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:49:32,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:49:32,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:49:32,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:49:32,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:49:32,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:49:32,599 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:49:32,600 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:49:32,600 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:49:32,600 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:49:32,600 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:49:32,600 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:49:32,601 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:49:32,601 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:49:32,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:49:32,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:49:32,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:49:32,811 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:49:32,812 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:49:32,813 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe000_power.oepc.yml/witness.yml [2024-06-28 01:49:32,986 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:49:32,987 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:49:32,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_power.oepc.i [2024-06-28 01:49:33,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:49:34,116 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:49:34,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_power.oepc.i [2024-06-28 01:49:34,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a84c0f8c/f0bb71efa9d64559b39c33ed825c72cc/FLAG772cb3f82 [2024-06-28 01:49:34,139 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a84c0f8c/f0bb71efa9d64559b39c33ed825c72cc [2024-06-28 01:49:34,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:49:34,140 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:49:34,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:49:34,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:49:34,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:49:34,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:49:32" (1/2) ... [2024-06-28 01:49:34,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4bc1d1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:49:34, skipping insertion in model container [2024-06-28 01:49:34,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:49:32" (1/2) ... [2024-06-28 01:49:34,147 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49eba1ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:49:34, skipping insertion in model container [2024-06-28 01:49:34,147 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:49:34" (2/2) ... [2024-06-28 01:49:34,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4bc1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34, skipping insertion in model container [2024-06-28 01:49:34,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:49:34" (2/2) ... [2024-06-28 01:49:34,148 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:49:34,283 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:49:34,284 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:49:34,284 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:49:34,284 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && ((*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1) || *__unbuffered_p0_EAX$read_delayed_var == 2))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:49:34,285 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:49:34,285 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-28 01:49:34,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:49:34,469 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_power.oepc.i[995,1008] [2024-06-28 01:49:34,629 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:49:34,637 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:49:34,666 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_power.oepc.i[995,1008] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:49:34,773 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:49:34,799 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:49:34,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34 WrapperNode [2024-06-28 01:49:34,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:49:34,800 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:49:34,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:49:34,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:49:34,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,880 INFO L138 Inliner]: procedures = 175, calls = 108, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 277 [2024-06-28 01:49:34,880 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:49:34,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:49:34,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:49:34,881 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:49:34,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,927 INFO L175 MemorySlicer]: Split 68 memory accesses to 2 slices as follows [2, 66]. 97 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-06-28 01:49:34,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,962 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,964 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:49:34,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:49:34,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:49:34,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:49:34,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (1/1) ... [2024-06-28 01:49:34,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:49:34,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:49:35,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:49:35,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:49:35,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:49:35,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:49:35,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:49:35,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:49:35,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:49:35,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:49:35,036 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:49:35,036 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:49:35,036 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:49:35,036 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:49:35,037 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:49:35,037 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:49:35,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:49:35,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:49:35,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:49:35,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:49:35,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:49:35,040 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:49:35,227 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:49:35,229 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:49:35,762 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:49:35,762 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:49:36,244 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:49:36,244 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:49:36,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:49:36 BoogieIcfgContainer [2024-06-28 01:49:36,245 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:49:36,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:49:36,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:49:36,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:49:36,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:49:32" (1/4) ... [2024-06-28 01:49:36,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f7cf4d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:49:36, skipping insertion in model container [2024-06-28 01:49:36,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:49:34" (2/4) ... [2024-06-28 01:49:36,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f7cf4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:49:36, skipping insertion in model container [2024-06-28 01:49:36,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:49:34" (3/4) ... [2024-06-28 01:49:36,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f7cf4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:49:36, skipping insertion in model container [2024-06-28 01:49:36,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:49:36" (4/4) ... [2024-06-28 01:49:36,253 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_power.oepc.i [2024-06-28 01:49:36,267 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:49:36,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:49:36,268 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:49:36,323 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:49:36,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:49:36,384 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:49:36,384 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:49:36,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:49:36,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:49:36,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 41 transitions, 91 flow [2024-06-28 01:49:36,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:49:36,409 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;@165e2d98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:49:36,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:49:36,413 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:49:36,414 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:49:36,414 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:49:36,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:36,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:49:36,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:36,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:36,419 INFO L85 PathProgramCache]: Analyzing trace with hash 980900516, now seen corresponding path program 1 times [2024-06-28 01:49:36,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:36,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334604217] [2024-06-28 01:49:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:36,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:38,055 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 01:49:38,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:38,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334604217] [2024-06-28 01:49:38,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334604217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:38,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:38,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:49:38,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274091912] [2024-06-28 01:49:38,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:38,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:49:38,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:38,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:49:38,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:49:38,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:49:38,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:38,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:38,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:49:38,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:39,106 INFO L124 PetriNetUnfolderBase]: 3347/5170 cut-off events. [2024-06-28 01:49:39,106 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 01:49:39,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10081 conditions, 5170 events. 3347/5170 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 29907 event pairs, 1959 based on Foata normal form. 0/4991 useless extension candidates. Maximal degree in co-relation 10069. Up to 4819 conditions per place. [2024-06-28 01:49:39,132 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 46 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:49:39,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 235 flow [2024-06-28 01:49:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:49:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:49:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-06-28 01:49:39,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-06-28 01:49:39,142 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 91 flow. Second operand 3 states and 90 transitions. [2024-06-28 01:49:39,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 235 flow [2024-06-28 01:49:39,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 230 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:49:39,147 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-28 01:49:39,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-28 01:49:39,150 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-28 01:49:39,151 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-28 01:49:39,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:39,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:39,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:39,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:49:39,152 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:39,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:39,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2048780913, now seen corresponding path program 1 times [2024-06-28 01:49:39,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:39,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660914429] [2024-06-28 01:49:39,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:39,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:41,454 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 01:49:41,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:41,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660914429] [2024-06-28 01:49:41,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660914429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:41,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:41,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:49:41,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605093127] [2024-06-28 01:49:41,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:41,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:49:41,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:41,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:49:41,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:49:41,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:49:41,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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 01:49:41,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:41,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:49:41,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:42,652 INFO L124 PetriNetUnfolderBase]: 3338/4924 cut-off events. [2024-06-28 01:49:42,653 INFO L125 PetriNetUnfolderBase]: For 808/812 co-relation queries the response was YES. [2024-06-28 01:49:42,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10996 conditions, 4924 events. 3338/4924 cut-off events. For 808/812 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 27194 event pairs, 1409 based on Foata normal form. 6/4928 useless extension candidates. Maximal degree in co-relation 10984. Up to 4746 conditions per place. [2024-06-28 01:49:42,671 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 64 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2024-06-28 01:49:42,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 82 transitions, 367 flow [2024-06-28 01:49:42,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:49:42,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:49:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-28 01:49:42,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-06-28 01:49:42,675 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 4 states and 122 transitions. [2024-06-28 01:49:42,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 82 transitions, 367 flow [2024-06-28 01:49:42,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:49:42,679 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 188 flow [2024-06-28 01:49:42,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-28 01:49:42,682 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2024-06-28 01:49:42,682 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 188 flow [2024-06-28 01:49:42,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 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 01:49:42,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:42,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:42,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:49:42,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:42,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:42,687 INFO L85 PathProgramCache]: Analyzing trace with hash -912299800, now seen corresponding path program 1 times [2024-06-28 01:49:42,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:42,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156504771] [2024-06-28 01:49:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:42,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:44,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:44,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:44,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156504771] [2024-06-28 01:49:44,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156504771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:44,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:44,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:49:44,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890078021] [2024-06-28 01:49:44,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:44,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:49:44,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:44,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:49:44,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:49:44,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:49:44,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:44,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:44,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:49:44,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:46,480 INFO L124 PetriNetUnfolderBase]: 4039/5917 cut-off events. [2024-06-28 01:49:46,480 INFO L125 PetriNetUnfolderBase]: For 2961/2961 co-relation queries the response was YES. [2024-06-28 01:49:46,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14712 conditions, 5917 events. 4039/5917 cut-off events. For 2961/2961 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32563 event pairs, 1293 based on Foata normal form. 4/5920 useless extension candidates. Maximal degree in co-relation 14697. Up to 5678 conditions per place. [2024-06-28 01:49:46,511 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 91 selfloop transitions, 12 changer transitions 0/110 dead transitions. [2024-06-28 01:49:46,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 110 transitions, 564 flow [2024-06-28 01:49:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:49:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:49:46,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-06-28 01:49:46,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6340425531914894 [2024-06-28 01:49:46,513 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 188 flow. Second operand 5 states and 149 transitions. [2024-06-28 01:49:46,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 110 transitions, 564 flow [2024-06-28 01:49:46,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 110 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:49:46,517 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 307 flow [2024-06-28 01:49:46,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=307, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-28 01:49:46,517 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-06-28 01:49:46,518 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 307 flow [2024-06-28 01:49:46,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:46,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:46,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:46,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:49:46,518 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:46,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:46,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1400852971, now seen corresponding path program 1 times [2024-06-28 01:49:46,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:46,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627166714] [2024-06-28 01:49:46,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:46,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:48,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:48,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627166714] [2024-06-28 01:49:48,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627166714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:48,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:48,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:49:48,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463217036] [2024-06-28 01:49:48,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:48,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:49:48,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:48,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:49:48,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:49:48,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:49:48,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:48,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:48,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:49:48,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:50,324 INFO L124 PetriNetUnfolderBase]: 4025/5895 cut-off events. [2024-06-28 01:49:50,324 INFO L125 PetriNetUnfolderBase]: For 4625/4625 co-relation queries the response was YES. [2024-06-28 01:49:50,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15984 conditions, 5895 events. 4025/5895 cut-off events. For 4625/4625 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 32469 event pairs, 878 based on Foata normal form. 8/5902 useless extension candidates. Maximal degree in co-relation 15964. Up to 5548 conditions per place. [2024-06-28 01:49:50,353 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 103 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2024-06-28 01:49:50,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 124 transitions, 689 flow [2024-06-28 01:49:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:49:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:49:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-06-28 01:49:50,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-06-28 01:49:50,354 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 307 flow. Second operand 6 states and 174 transitions. [2024-06-28 01:49:50,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 124 transitions, 689 flow [2024-06-28 01:49:50,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 124 transitions, 687 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 01:49:50,361 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 348 flow [2024-06-28 01:49:50,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-28 01:49:50,362 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2024-06-28 01:49:50,362 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 348 flow [2024-06-28 01:49:50,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:50,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:50,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:50,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:49:50,363 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:50,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash -699478788, now seen corresponding path program 1 times [2024-06-28 01:49:50,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:50,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500847370] [2024-06-28 01:49:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:50,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:52,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:52,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500847370] [2024-06-28 01:49:52,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500847370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:52,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:52,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:49:52,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947344486] [2024-06-28 01:49:52,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:52,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:49:52,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:52,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:49:52,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:49:52,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:49:52,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 348 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 01:49:52,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:52,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:49:52,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:53,514 INFO L124 PetriNetUnfolderBase]: 4015/6160 cut-off events. [2024-06-28 01:49:53,514 INFO L125 PetriNetUnfolderBase]: For 6897/6897 co-relation queries the response was YES. [2024-06-28 01:49:53,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17051 conditions, 6160 events. 4015/6160 cut-off events. For 6897/6897 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 34966 event pairs, 1620 based on Foata normal form. 4/6163 useless extension candidates. Maximal degree in co-relation 17027. Up to 5710 conditions per place. [2024-06-28 01:49:53,544 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 79 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-06-28 01:49:53,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 96 transitions, 638 flow [2024-06-28 01:49:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:49:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:49:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 01:49:53,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-28 01:49:53,563 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 348 flow. Second operand 5 states and 118 transitions. [2024-06-28 01:49:53,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 96 transitions, 638 flow [2024-06-28 01:49:53,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 603 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:49:53,571 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 419 flow [2024-06-28 01:49:53,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2024-06-28 01:49:53,573 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2024-06-28 01:49:53,573 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 419 flow [2024-06-28 01:49:53,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 01:49:53,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:53,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:53,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:49:53,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:53,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:53,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1933328129, now seen corresponding path program 1 times [2024-06-28 01:49:53,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:53,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233537974] [2024-06-28 01:49:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:53,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:56,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:56,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233537974] [2024-06-28 01:49:56,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233537974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:56,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:56,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:49:56,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92857177] [2024-06-28 01:49:56,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:56,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:49:56,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:56,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:49:56,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:49:56,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:49:56,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 419 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:56,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:56,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:49:56,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:58,236 INFO L124 PetriNetUnfolderBase]: 4069/5984 cut-off events. [2024-06-28 01:49:58,236 INFO L125 PetriNetUnfolderBase]: For 8723/8725 co-relation queries the response was YES. [2024-06-28 01:49:58,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18165 conditions, 5984 events. 4069/5984 cut-off events. For 8723/8725 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 33106 event pairs, 1178 based on Foata normal form. 5/5988 useless extension candidates. Maximal degree in co-relation 18138. Up to 5508 conditions per place. [2024-06-28 01:49:58,266 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 104 selfloop transitions, 29 changer transitions 0/139 dead transitions. [2024-06-28 01:49:58,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 139 transitions, 901 flow [2024-06-28 01:49:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:49:58,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:49:58,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:49:58,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562310030395137 [2024-06-28 01:49:58,268 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 419 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:49:58,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 139 transitions, 901 flow [2024-06-28 01:49:58,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 139 transitions, 893 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:49:58,278 INFO L231 Difference]: Finished difference. Result has 75 places, 78 transitions, 523 flow [2024-06-28 01:49:58,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=523, PETRI_PLACES=75, PETRI_TRANSITIONS=78} [2024-06-28 01:49:58,278 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-06-28 01:49:58,279 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 78 transitions, 523 flow [2024-06-28 01:49:58,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:58,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:58,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:58,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:49:58,279 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:58,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash 719073639, now seen corresponding path program 2 times [2024-06-28 01:49:58,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:58,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508275370] [2024-06-28 01:49:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:58,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:58,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:01,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:01,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508275370] [2024-06-28 01:50:01,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508275370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:01,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:01,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:50:01,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248063205] [2024-06-28 01:50:01,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:01,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:50:01,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:01,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:50:01,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:50:01,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:01,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 78 transitions, 523 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:01,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:01,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:01,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:02,977 INFO L124 PetriNetUnfolderBase]: 4177/6152 cut-off events. [2024-06-28 01:50:02,977 INFO L125 PetriNetUnfolderBase]: For 12372/12374 co-relation queries the response was YES. [2024-06-28 01:50:02,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20090 conditions, 6152 events. 4177/6152 cut-off events. For 12372/12374 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 34204 event pairs, 1162 based on Foata normal form. 5/6156 useless extension candidates. Maximal degree in co-relation 20060. Up to 5734 conditions per place. [2024-06-28 01:50:03,007 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 106 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2024-06-28 01:50:03,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 139 transitions, 986 flow [2024-06-28 01:50:03,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:50:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:50:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:50:03,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-28 01:50:03,009 INFO L175 Difference]: Start difference. First operand has 75 places, 78 transitions, 523 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:50:03,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 139 transitions, 986 flow [2024-06-28 01:50:03,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 139 transitions, 918 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:50:03,021 INFO L231 Difference]: Finished difference. Result has 78 places, 84 transitions, 578 flow [2024-06-28 01:50:03,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=578, PETRI_PLACES=78, PETRI_TRANSITIONS=84} [2024-06-28 01:50:03,022 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 27 predicate places. [2024-06-28 01:50:03,022 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 84 transitions, 578 flow [2024-06-28 01:50:03,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:03,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:03,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:03,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:50:03,023 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:03,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:03,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1933448285, now seen corresponding path program 1 times [2024-06-28 01:50:03,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:03,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786136254] [2024-06-28 01:50:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:05,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:05,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786136254] [2024-06-28 01:50:05,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786136254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:05,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:05,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:50:05,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908913207] [2024-06-28 01:50:05,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:05,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:50:05,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:05,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:50:05,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:50:05,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:05,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 84 transitions, 578 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:05,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:05,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:05,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:07,628 INFO L124 PetriNetUnfolderBase]: 4873/7160 cut-off events. [2024-06-28 01:50:07,629 INFO L125 PetriNetUnfolderBase]: For 13622/13624 co-relation queries the response was YES. [2024-06-28 01:50:07,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22674 conditions, 7160 events. 4873/7160 cut-off events. For 13622/13624 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 39845 event pairs, 1220 based on Foata normal form. 12/7171 useless extension candidates. Maximal degree in co-relation 22643. Up to 6202 conditions per place. [2024-06-28 01:50:07,664 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 134 selfloop transitions, 41 changer transitions 0/181 dead transitions. [2024-06-28 01:50:07,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 181 transitions, 1248 flow [2024-06-28 01:50:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:50:07,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:50:07,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:50:07,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 01:50:07,666 INFO L175 Difference]: Start difference. First operand has 78 places, 84 transitions, 578 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:50:07,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 181 transitions, 1248 flow [2024-06-28 01:50:07,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 181 transitions, 1190 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 01:50:07,682 INFO L231 Difference]: Finished difference. Result has 85 places, 101 transitions, 731 flow [2024-06-28 01:50:07,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=731, PETRI_PLACES=85, PETRI_TRANSITIONS=101} [2024-06-28 01:50:07,683 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 34 predicate places. [2024-06-28 01:50:07,683 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 101 transitions, 731 flow [2024-06-28 01:50:07,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:07,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:07,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:07,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:50:07,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:07,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:07,684 INFO L85 PathProgramCache]: Analyzing trace with hash 30278971, now seen corresponding path program 2 times [2024-06-28 01:50:07,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:07,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95917935] [2024-06-28 01:50:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:07,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:10,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:10,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95917935] [2024-06-28 01:50:10,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95917935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:10,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:10,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:50:10,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628852146] [2024-06-28 01:50:10,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:10,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:50:10,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:10,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:50:10,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:50:10,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:10,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 101 transitions, 731 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:10,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:10,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:10,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:11,786 INFO L124 PetriNetUnfolderBase]: 4957/7278 cut-off events. [2024-06-28 01:50:11,786 INFO L125 PetriNetUnfolderBase]: For 21372/21374 co-relation queries the response was YES. [2024-06-28 01:50:11,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26804 conditions, 7278 events. 4957/7278 cut-off events. For 21372/21374 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 40390 event pairs, 1209 based on Foata normal form. 12/7289 useless extension candidates. Maximal degree in co-relation 26770. Up to 6267 conditions per place. [2024-06-28 01:50:11,823 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 108 selfloop transitions, 45 changer transitions 0/159 dead transitions. [2024-06-28 01:50:11,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 159 transitions, 1237 flow [2024-06-28 01:50:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:50:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:50:11,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:50:11,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5440729483282675 [2024-06-28 01:50:11,825 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 731 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:50:11,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 159 transitions, 1237 flow [2024-06-28 01:50:11,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 159 transitions, 1181 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:50:11,852 INFO L231 Difference]: Finished difference. Result has 89 places, 107 transitions, 852 flow [2024-06-28 01:50:11,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=852, PETRI_PLACES=89, PETRI_TRANSITIONS=107} [2024-06-28 01:50:11,853 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-06-28 01:50:11,853 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 107 transitions, 852 flow [2024-06-28 01:50:11,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:11,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:11,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:11,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:50:11,854 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:11,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:11,854 INFO L85 PathProgramCache]: Analyzing trace with hash 40109815, now seen corresponding path program 3 times [2024-06-28 01:50:11,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:11,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946940718] [2024-06-28 01:50:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:11,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:14,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:14,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:14,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946940718] [2024-06-28 01:50:14,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946940718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:14,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:14,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:50:14,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583156814] [2024-06-28 01:50:14,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:14,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:50:14,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:14,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:50:14,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:50:14,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:14,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 107 transitions, 852 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:14,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:14,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:14,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:16,277 INFO L124 PetriNetUnfolderBase]: 4949/7243 cut-off events. [2024-06-28 01:50:16,278 INFO L125 PetriNetUnfolderBase]: For 24852/24854 co-relation queries the response was YES. [2024-06-28 01:50:16,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28451 conditions, 7243 events. 4949/7243 cut-off events. For 24852/24854 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 40016 event pairs, 1272 based on Foata normal form. 5/7247 useless extension candidates. Maximal degree in co-relation 28414. Up to 6681 conditions per place. [2024-06-28 01:50:16,313 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 116 selfloop transitions, 32 changer transitions 0/154 dead transitions. [2024-06-28 01:50:16,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 154 transitions, 1292 flow [2024-06-28 01:50:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:50:16,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:50:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 01:50:16,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:50:16,316 INFO L175 Difference]: Start difference. First operand has 89 places, 107 transitions, 852 flow. Second operand 6 states and 156 transitions. [2024-06-28 01:50:16,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 154 transitions, 1292 flow [2024-06-28 01:50:16,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 154 transitions, 1213 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:50:16,357 INFO L231 Difference]: Finished difference. Result has 91 places, 107 transitions, 853 flow [2024-06-28 01:50:16,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=853, PETRI_PLACES=91, PETRI_TRANSITIONS=107} [2024-06-28 01:50:16,358 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 40 predicate places. [2024-06-28 01:50:16,359 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 107 transitions, 853 flow [2024-06-28 01:50:16,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:16,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:16,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:16,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:50:16,359 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:16,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:16,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1210804815, now seen corresponding path program 3 times [2024-06-28 01:50:16,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:16,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764017650] [2024-06-28 01:50:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:16,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:18,625 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 01:50:18,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764017650] [2024-06-28 01:50:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764017650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:18,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:18,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:50:18,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454221263] [2024-06-28 01:50:18,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:18,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:50:18,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:18,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:50:18,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:50:18,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:18,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 107 transitions, 853 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:18,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:18,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:18,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:20,295 INFO L124 PetriNetUnfolderBase]: 4949/7201 cut-off events. [2024-06-28 01:50:20,295 INFO L125 PetriNetUnfolderBase]: For 26019/26030 co-relation queries the response was YES. [2024-06-28 01:50:20,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28161 conditions, 7201 events. 4949/7201 cut-off events. For 26019/26030 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 38657 event pairs, 1321 based on Foata normal form. 14/7213 useless extension candidates. Maximal degree in co-relation 28123. Up to 6734 conditions per place. [2024-06-28 01:50:20,333 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 136 selfloop transitions, 27 changer transitions 0/169 dead transitions. [2024-06-28 01:50:20,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 169 transitions, 1490 flow [2024-06-28 01:50:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:50:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:50:20,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:50:20,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:50:20,334 INFO L175 Difference]: Start difference. First operand has 91 places, 107 transitions, 853 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:50:20,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 169 transitions, 1490 flow [2024-06-28 01:50:20,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 169 transitions, 1406 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:50:20,368 INFO L231 Difference]: Finished difference. Result has 94 places, 125 transitions, 1046 flow [2024-06-28 01:50:20,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1046, PETRI_PLACES=94, PETRI_TRANSITIONS=125} [2024-06-28 01:50:20,368 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 43 predicate places. [2024-06-28 01:50:20,368 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 125 transitions, 1046 flow [2024-06-28 01:50:20,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:20,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:20,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:20,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:50:20,369 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:20,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash 30525049, now seen corresponding path program 1 times [2024-06-28 01:50:20,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:20,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145677166] [2024-06-28 01:50:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:20,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:22,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:22,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145677166] [2024-06-28 01:50:22,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145677166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:22,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:22,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:22,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855243517] [2024-06-28 01:50:22,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:22,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:22,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:22,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:22,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:22,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:22,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 125 transitions, 1046 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:22,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:22,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:22,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:24,550 INFO L124 PetriNetUnfolderBase]: 4941/7481 cut-off events. [2024-06-28 01:50:24,550 INFO L125 PetriNetUnfolderBase]: For 28968/28970 co-relation queries the response was YES. [2024-06-28 01:50:24,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29915 conditions, 7481 events. 4941/7481 cut-off events. For 28968/28970 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 42335 event pairs, 1584 based on Foata normal form. 6/7486 useless extension candidates. Maximal degree in co-relation 29874. Up to 6929 conditions per place. [2024-06-28 01:50:24,593 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 142 selfloop transitions, 14 changer transitions 0/162 dead transitions. [2024-06-28 01:50:24,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 162 transitions, 1469 flow [2024-06-28 01:50:24,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:50:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:50:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 01:50:24,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:50:24,595 INFO L175 Difference]: Start difference. First operand has 94 places, 125 transitions, 1046 flow. Second operand 6 states and 141 transitions. [2024-06-28 01:50:24,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 162 transitions, 1469 flow [2024-06-28 01:50:24,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 162 transitions, 1449 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-28 01:50:24,640 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 1100 flow [2024-06-28 01:50:24,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1100, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2024-06-28 01:50:24,641 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 48 predicate places. [2024-06-28 01:50:24,641 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 1100 flow [2024-06-28 01:50:24,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:24,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:24,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:24,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:50:24,641 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:24,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash -192792892, now seen corresponding path program 1 times [2024-06-28 01:50:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313617455] [2024-06-28 01:50:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:24,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:27,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:27,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:27,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313617455] [2024-06-28 01:50:27,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313617455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:27,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:27,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:27,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464122116] [2024-06-28 01:50:27,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:27,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:27,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:27,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:27,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:27,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:27,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 1100 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:27,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:27,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:27,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:30,333 INFO L124 PetriNetUnfolderBase]: 5637/8243 cut-off events. [2024-06-28 01:50:30,334 INFO L125 PetriNetUnfolderBase]: For 37521/37523 co-relation queries the response was YES. [2024-06-28 01:50:30,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34096 conditions, 8243 events. 5637/8243 cut-off events. For 37521/37523 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 45776 event pairs, 1334 based on Foata normal form. 12/8254 useless extension candidates. Maximal degree in co-relation 34052. Up to 6168 conditions per place. [2024-06-28 01:50:30,376 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 167 selfloop transitions, 80 changer transitions 0/253 dead transitions. [2024-06-28 01:50:30,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 253 transitions, 2147 flow [2024-06-28 01:50:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:50:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:50:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 296 transitions. [2024-06-28 01:50:30,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5725338491295938 [2024-06-28 01:50:30,378 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 1100 flow. Second operand 11 states and 296 transitions. [2024-06-28 01:50:30,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 253 transitions, 2147 flow [2024-06-28 01:50:30,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 253 transitions, 2099 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:50:30,421 INFO L231 Difference]: Finished difference. Result has 108 places, 145 transitions, 1419 flow [2024-06-28 01:50:30,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1419, PETRI_PLACES=108, PETRI_TRANSITIONS=145} [2024-06-28 01:50:30,421 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 57 predicate places. [2024-06-28 01:50:30,421 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 145 transitions, 1419 flow [2024-06-28 01:50:30,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:30,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:30,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:30,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:50:30,422 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:30,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:30,422 INFO L85 PathProgramCache]: Analyzing trace with hash -192648742, now seen corresponding path program 2 times [2024-06-28 01:50:30,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:30,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999987539] [2024-06-28 01:50:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:30,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:33,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:33,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999987539] [2024-06-28 01:50:33,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999987539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:33,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:33,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:33,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787712863] [2024-06-28 01:50:33,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:33,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:33,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:33,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:33,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:33,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:33,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 145 transitions, 1419 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:33,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:33,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:33,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:36,202 INFO L124 PetriNetUnfolderBase]: 6153/8999 cut-off events. [2024-06-28 01:50:36,202 INFO L125 PetriNetUnfolderBase]: For 56648/56650 co-relation queries the response was YES. [2024-06-28 01:50:36,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42178 conditions, 8999 events. 6153/8999 cut-off events. For 56648/56650 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 50289 event pairs, 1497 based on Foata normal form. 12/9010 useless extension candidates. Maximal degree in co-relation 42131. Up to 7384 conditions per place. [2024-06-28 01:50:36,248 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 182 selfloop transitions, 69 changer transitions 0/257 dead transitions. [2024-06-28 01:50:36,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 257 transitions, 2502 flow [2024-06-28 01:50:36,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:50:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:50:36,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-06-28 01:50:36,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5765957446808511 [2024-06-28 01:50:36,250 INFO L175 Difference]: Start difference. First operand has 108 places, 145 transitions, 1419 flow. Second operand 10 states and 271 transitions. [2024-06-28 01:50:36,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 257 transitions, 2502 flow [2024-06-28 01:50:36,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 257 transitions, 2313 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-28 01:50:36,335 INFO L231 Difference]: Finished difference. Result has 113 places, 161 transitions, 1616 flow [2024-06-28 01:50:36,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1616, PETRI_PLACES=113, PETRI_TRANSITIONS=161} [2024-06-28 01:50:36,335 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 62 predicate places. [2024-06-28 01:50:36,335 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 161 transitions, 1616 flow [2024-06-28 01:50:36,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:36,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:36,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:36,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:50:36,336 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:36,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:36,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1835491194, now seen corresponding path program 3 times [2024-06-28 01:50:36,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:36,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709073843] [2024-06-28 01:50:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:36,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:39,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:39,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:39,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709073843] [2024-06-28 01:50:39,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709073843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:39,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:39,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:39,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865808309] [2024-06-28 01:50:39,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:39,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:39,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:39,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:39,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:39,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:39,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 161 transitions, 1616 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:39,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:39,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:39,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:42,296 INFO L124 PetriNetUnfolderBase]: 6237/9157 cut-off events. [2024-06-28 01:50:42,296 INFO L125 PetriNetUnfolderBase]: For 63239/63241 co-relation queries the response was YES. [2024-06-28 01:50:42,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44331 conditions, 9157 events. 6237/9157 cut-off events. For 63239/63241 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 51674 event pairs, 1460 based on Foata normal form. 12/9168 useless extension candidates. Maximal degree in co-relation 44281. Up to 7449 conditions per place. [2024-06-28 01:50:42,364 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 198 selfloop transitions, 76 changer transitions 0/280 dead transitions. [2024-06-28 01:50:42,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 280 transitions, 2623 flow [2024-06-28 01:50:42,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:50:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:50:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 320 transitions. [2024-06-28 01:50:42,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-06-28 01:50:42,366 INFO L175 Difference]: Start difference. First operand has 113 places, 161 transitions, 1616 flow. Second operand 12 states and 320 transitions. [2024-06-28 01:50:42,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 280 transitions, 2623 flow [2024-06-28 01:50:42,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 280 transitions, 2500 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:50:42,488 INFO L231 Difference]: Finished difference. Result has 119 places, 166 transitions, 1725 flow [2024-06-28 01:50:42,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1725, PETRI_PLACES=119, PETRI_TRANSITIONS=166} [2024-06-28 01:50:42,488 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 68 predicate places. [2024-06-28 01:50:42,489 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 166 transitions, 1725 flow [2024-06-28 01:50:42,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:42,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:42,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:42,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:50:42,489 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:42,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:42,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1243406598, now seen corresponding path program 4 times [2024-06-28 01:50:42,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:42,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355301424] [2024-06-28 01:50:42,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:42,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:45,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:45,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:45,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355301424] [2024-06-28 01:50:45,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355301424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:45,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:45,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:45,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177901511] [2024-06-28 01:50:45,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:45,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:45,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:45,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:45,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:45,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:45,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 166 transitions, 1725 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:45,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:45,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:45,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:48,018 INFO L124 PetriNetUnfolderBase]: 6849/10076 cut-off events. [2024-06-28 01:50:48,018 INFO L125 PetriNetUnfolderBase]: For 74002/74004 co-relation queries the response was YES. [2024-06-28 01:50:48,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50393 conditions, 10076 events. 6849/10076 cut-off events. For 74002/74004 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 58168 event pairs, 1426 based on Foata normal form. 12/10087 useless extension candidates. Maximal degree in co-relation 50341. Up to 7642 conditions per place. [2024-06-28 01:50:48,080 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 181 selfloop transitions, 92 changer transitions 0/279 dead transitions. [2024-06-28 01:50:48,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 279 transitions, 2973 flow [2024-06-28 01:50:48,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:50:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:50:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-28 01:50:48,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5839243498817966 [2024-06-28 01:50:48,082 INFO L175 Difference]: Start difference. First operand has 119 places, 166 transitions, 1725 flow. Second operand 9 states and 247 transitions. [2024-06-28 01:50:48,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 279 transitions, 2973 flow [2024-06-28 01:50:48,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 279 transitions, 2735 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-28 01:50:48,220 INFO L231 Difference]: Finished difference. Result has 120 places, 192 transitions, 2127 flow [2024-06-28 01:50:48,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2127, PETRI_PLACES=120, PETRI_TRANSITIONS=192} [2024-06-28 01:50:48,221 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 69 predicate places. [2024-06-28 01:50:48,221 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 192 transitions, 2127 flow [2024-06-28 01:50:48,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:48,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:48,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:48,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:50:48,222 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:48,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1243412178, now seen corresponding path program 5 times [2024-06-28 01:50:48,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:48,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260126295] [2024-06-28 01:50:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:48,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:50,916 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 01:50:50,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:50,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260126295] [2024-06-28 01:50:50,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260126295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:50,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:50,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:50,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847022461] [2024-06-28 01:50:50,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:50,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:50,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:50,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:50,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:50,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:50,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 192 transitions, 2127 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:50,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:50,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:50,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:53,458 INFO L124 PetriNetUnfolderBase]: 6933/10199 cut-off events. [2024-06-28 01:50:53,458 INFO L125 PetriNetUnfolderBase]: For 83069/83071 co-relation queries the response was YES. [2024-06-28 01:50:53,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53051 conditions, 10199 events. 6933/10199 cut-off events. For 83069/83071 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 58999 event pairs, 1346 based on Foata normal form. 12/10210 useless extension candidates. Maximal degree in co-relation 52996. Up to 7707 conditions per place. [2024-06-28 01:50:53,532 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 171 selfloop transitions, 100 changer transitions 0/277 dead transitions. [2024-06-28 01:50:53,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 277 transitions, 3026 flow [2024-06-28 01:50:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:50:53,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:50:53,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 01:50:53,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2024-06-28 01:50:53,534 INFO L175 Difference]: Start difference. First operand has 120 places, 192 transitions, 2127 flow. Second operand 9 states and 239 transitions. [2024-06-28 01:50:53,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 277 transitions, 3026 flow [2024-06-28 01:50:53,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 277 transitions, 2867 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 01:50:53,752 INFO L231 Difference]: Finished difference. Result has 125 places, 198 transitions, 2314 flow [2024-06-28 01:50:53,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1974, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2314, PETRI_PLACES=125, PETRI_TRANSITIONS=198} [2024-06-28 01:50:53,753 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 74 predicate places. [2024-06-28 01:50:53,753 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 198 transitions, 2314 flow [2024-06-28 01:50:53,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:53,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:53,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:53,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:50:53,754 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:53,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash 946001898, now seen corresponding path program 6 times [2024-06-28 01:50:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287657200] [2024-06-28 01:50:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:53,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:56,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:56,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287657200] [2024-06-28 01:50:56,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287657200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:56,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:56,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:56,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909314102] [2024-06-28 01:50:56,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:56,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:56,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:56,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:56,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:50:56,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 198 transitions, 2314 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:56,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:56,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:50:56,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:59,401 INFO L124 PetriNetUnfolderBase]: 6943/10243 cut-off events. [2024-06-28 01:50:59,401 INFO L125 PetriNetUnfolderBase]: For 89340/89368 co-relation queries the response was YES. [2024-06-28 01:50:59,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54347 conditions, 10243 events. 6943/10243 cut-off events. For 89340/89368 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 59119 event pairs, 1590 based on Foata normal form. 31/10272 useless extension candidates. Maximal degree in co-relation 54290. Up to 9088 conditions per place. [2024-06-28 01:50:59,466 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 247 selfloop transitions, 55 changer transitions 0/308 dead transitions. [2024-06-28 01:50:59,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 308 transitions, 3604 flow [2024-06-28 01:50:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:50:59,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:50:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:50:59,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-06-28 01:50:59,468 INFO L175 Difference]: Start difference. First operand has 125 places, 198 transitions, 2314 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:50:59,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 308 transitions, 3604 flow [2024-06-28 01:50:59,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 308 transitions, 3402 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:50:59,689 INFO L231 Difference]: Finished difference. Result has 131 places, 221 transitions, 2620 flow [2024-06-28 01:50:59,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2620, PETRI_PLACES=131, PETRI_TRANSITIONS=221} [2024-06-28 01:50:59,690 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-06-28 01:50:59,690 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 221 transitions, 2620 flow [2024-06-28 01:50:59,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:59,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:59,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:59,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:50:59,690 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:50:59,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash -327369538, now seen corresponding path program 1 times [2024-06-28 01:50:59,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:59,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259517731] [2024-06-28 01:50:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:59,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:02,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:02,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:02,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259517731] [2024-06-28 01:51:02,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259517731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:02,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:02,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:02,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180558200] [2024-06-28 01:51:02,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:02,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:02,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:02,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:02,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:02,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:51:02,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 221 transitions, 2620 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:02,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:02,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:51:02,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:05,286 INFO L124 PetriNetUnfolderBase]: 7846/11641 cut-off events. [2024-06-28 01:51:05,286 INFO L125 PetriNetUnfolderBase]: For 112603/112615 co-relation queries the response was YES. [2024-06-28 01:51:05,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63910 conditions, 11641 events. 7846/11641 cut-off events. For 112603/112615 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 69318 event pairs, 1772 based on Foata normal form. 18/11658 useless extension candidates. Maximal degree in co-relation 63850. Up to 9879 conditions per place. [2024-06-28 01:51:05,377 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 266 selfloop transitions, 109 changer transitions 0/381 dead transitions. [2024-06-28 01:51:05,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 381 transitions, 4881 flow [2024-06-28 01:51:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:51:05,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:51:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 01:51:05,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650118203309693 [2024-06-28 01:51:05,380 INFO L175 Difference]: Start difference. First operand has 131 places, 221 transitions, 2620 flow. Second operand 9 states and 239 transitions. [2024-06-28 01:51:05,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 381 transitions, 4881 flow [2024-06-28 01:51:05,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 381 transitions, 4798 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:51:05,751 INFO L231 Difference]: Finished difference. Result has 139 places, 287 transitions, 3859 flow [2024-06-28 01:51:05,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3859, PETRI_PLACES=139, PETRI_TRANSITIONS=287} [2024-06-28 01:51:05,752 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 88 predicate places. [2024-06-28 01:51:05,752 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 287 transitions, 3859 flow [2024-06-28 01:51:05,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:05,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:05,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:05,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:51:05,753 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:05,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:05,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1795294432, now seen corresponding path program 2 times [2024-06-28 01:51:05,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:05,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467295021] [2024-06-28 01:51:05,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:05,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:08,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:08,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467295021] [2024-06-28 01:51:08,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467295021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:08,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:08,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126036993] [2024-06-28 01:51:08,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:08,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:08,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:08,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:08,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:08,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:51:08,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 287 transitions, 3859 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:08,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:08,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:51:08,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:11,758 INFO L124 PetriNetUnfolderBase]: 7934/11761 cut-off events. [2024-06-28 01:51:11,759 INFO L125 PetriNetUnfolderBase]: For 133866/133878 co-relation queries the response was YES. [2024-06-28 01:51:11,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68406 conditions, 11761 events. 7934/11761 cut-off events. For 133866/133878 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 70164 event pairs, 1332 based on Foata normal form. 18/11778 useless extension candidates. Maximal degree in co-relation 68341. Up to 9490 conditions per place. [2024-06-28 01:51:11,849 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 246 selfloop transitions, 114 changer transitions 0/366 dead transitions. [2024-06-28 01:51:11,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 366 transitions, 5105 flow [2024-06-28 01:51:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:11,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:51:11,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558510638297872 [2024-06-28 01:51:11,851 INFO L175 Difference]: Start difference. First operand has 139 places, 287 transitions, 3859 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:51:11,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 366 transitions, 5105 flow [2024-06-28 01:51:12,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 366 transitions, 4982 flow, removed 53 selfloop flow, removed 2 redundant places. [2024-06-28 01:51:12,251 INFO L231 Difference]: Finished difference. Result has 145 places, 291 transitions, 4066 flow [2024-06-28 01:51:12,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3736, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4066, PETRI_PLACES=145, PETRI_TRANSITIONS=291} [2024-06-28 01:51:12,252 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 94 predicate places. [2024-06-28 01:51:12,252 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 291 transitions, 4066 flow [2024-06-28 01:51:12,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:12,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:12,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:12,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:51:12,253 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:12,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash -251857790, now seen corresponding path program 3 times [2024-06-28 01:51:12,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:12,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815258244] [2024-06-28 01:51:12,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:12,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:15,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:15,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815258244] [2024-06-28 01:51:15,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815258244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:15,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:15,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:15,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131350174] [2024-06-28 01:51:15,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:15,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:15,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:15,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:15,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:51:15,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 291 transitions, 4066 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:15,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:15,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:51:15,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:18,414 INFO L124 PetriNetUnfolderBase]: 8110/11994 cut-off events. [2024-06-28 01:51:18,414 INFO L125 PetriNetUnfolderBase]: For 145361/145373 co-relation queries the response was YES. [2024-06-28 01:51:18,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70989 conditions, 11994 events. 8110/11994 cut-off events. For 145361/145373 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 71327 event pairs, 1746 based on Foata normal form. 24/12017 useless extension candidates. Maximal degree in co-relation 70922. Up to 10360 conditions per place. [2024-06-28 01:51:18,512 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 256 selfloop transitions, 108 changer transitions 0/370 dead transitions. [2024-06-28 01:51:18,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 370 transitions, 5254 flow [2024-06-28 01:51:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:18,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:51:18,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-06-28 01:51:18,513 INFO L175 Difference]: Start difference. First operand has 145 places, 291 transitions, 4066 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:51:18,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 370 transitions, 5254 flow [2024-06-28 01:51:18,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 370 transitions, 5091 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 01:51:18,974 INFO L231 Difference]: Finished difference. Result has 149 places, 295 transitions, 4222 flow [2024-06-28 01:51:18,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3911, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4222, PETRI_PLACES=149, PETRI_TRANSITIONS=295} [2024-06-28 01:51:18,974 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 98 predicate places. [2024-06-28 01:51:18,975 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 295 transitions, 4222 flow [2024-06-28 01:51:18,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:18,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:18,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:18,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:51:18,975 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:18,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:18,975 INFO L85 PathProgramCache]: Analyzing trace with hash -459897850, now seen corresponding path program 4 times [2024-06-28 01:51:18,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:18,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155743868] [2024-06-28 01:51:18,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:18,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:22,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:22,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155743868] [2024-06-28 01:51:22,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155743868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:22,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:22,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:22,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35528824] [2024-06-28 01:51:22,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:22,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:22,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:22,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:22,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:51:22,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 295 transitions, 4222 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:22,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:22,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:51:22,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:25,431 INFO L124 PetriNetUnfolderBase]: 8277/12195 cut-off events. [2024-06-28 01:51:25,431 INFO L125 PetriNetUnfolderBase]: For 147682/147690 co-relation queries the response was YES. [2024-06-28 01:51:25,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73077 conditions, 12195 events. 8277/12195 cut-off events. For 147682/147690 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 72324 event pairs, 1737 based on Foata normal form. 20/12214 useless extension candidates. Maximal degree in co-relation 73008. Up to 10961 conditions per place. [2024-06-28 01:51:25,526 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 294 selfloop transitions, 74 changer transitions 0/374 dead transitions. [2024-06-28 01:51:25,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 374 transitions, 5429 flow [2024-06-28 01:51:25,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:25,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:51:25,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-28 01:51:25,528 INFO L175 Difference]: Start difference. First operand has 149 places, 295 transitions, 4222 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:51:25,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 374 transitions, 5429 flow [2024-06-28 01:51:25,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 374 transitions, 5192 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:51:26,001 INFO L231 Difference]: Finished difference. Result has 151 places, 299 transitions, 4245 flow [2024-06-28 01:51:26,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3985, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4245, PETRI_PLACES=151, PETRI_TRANSITIONS=299} [2024-06-28 01:51:26,001 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 100 predicate places. [2024-06-28 01:51:26,002 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 299 transitions, 4245 flow [2024-06-28 01:51:26,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:26,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:26,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:26,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:51:26,002 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:26,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:26,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1676961604, now seen corresponding path program 1 times [2024-06-28 01:51:26,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:26,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154917953] [2024-06-28 01:51:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:26,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:29,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:29,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154917953] [2024-06-28 01:51:29,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154917953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:29,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:29,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:51:29,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039103877] [2024-06-28 01:51:29,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:29,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:51:29,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:29,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:51:29,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:51:29,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:51:29,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 299 transitions, 4245 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:29,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:29,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:51:29,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:33,024 INFO L124 PetriNetUnfolderBase]: 8593/12556 cut-off events. [2024-06-28 01:51:33,024 INFO L125 PetriNetUnfolderBase]: For 158152/158160 co-relation queries the response was YES. [2024-06-28 01:51:33,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74929 conditions, 12556 events. 8593/12556 cut-off events. For 158152/158160 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 73585 event pairs, 1597 based on Foata normal form. 26/12581 useless extension candidates. Maximal degree in co-relation 74859. Up to 10697 conditions per place. [2024-06-28 01:51:33,123 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 313 selfloop transitions, 80 changer transitions 0/399 dead transitions. [2024-06-28 01:51:33,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 399 transitions, 5535 flow [2024-06-28 01:51:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:51:33,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:51:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-28 01:51:33,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617021276595745 [2024-06-28 01:51:33,125 INFO L175 Difference]: Start difference. First operand has 151 places, 299 transitions, 4245 flow. Second operand 10 states and 264 transitions. [2024-06-28 01:51:33,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 399 transitions, 5535 flow [2024-06-28 01:51:33,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 399 transitions, 5367 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:51:33,587 INFO L231 Difference]: Finished difference. Result has 155 places, 303 transitions, 4340 flow [2024-06-28 01:51:33,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4077, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4340, PETRI_PLACES=155, PETRI_TRANSITIONS=303} [2024-06-28 01:51:33,588 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 104 predicate places. [2024-06-28 01:51:33,588 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 303 transitions, 4340 flow [2024-06-28 01:51:33,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:33,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:33,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:33,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:51:33,588 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:33,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:33,589 INFO L85 PathProgramCache]: Analyzing trace with hash -966788960, now seen corresponding path program 5 times [2024-06-28 01:51:33,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:33,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246708090] [2024-06-28 01:51:33,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:33,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:36,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:36,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246708090] [2024-06-28 01:51:36,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246708090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:36,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:36,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:51:36,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535608005] [2024-06-28 01:51:36,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:36,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:51:36,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:36,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:51:36,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:51:36,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:51:36,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 303 transitions, 4340 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:36,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:36,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:51:36,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:39,720 INFO L124 PetriNetUnfolderBase]: 8570/12654 cut-off events. [2024-06-28 01:51:39,720 INFO L125 PetriNetUnfolderBase]: For 163732/163744 co-relation queries the response was YES. [2024-06-28 01:51:39,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76260 conditions, 12654 events. 8570/12654 cut-off events. For 163732/163744 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 75614 event pairs, 1380 based on Foata normal form. 22/12675 useless extension candidates. Maximal degree in co-relation 76189. Up to 10724 conditions per place. [2024-06-28 01:51:39,846 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 253 selfloop transitions, 107 changer transitions 0/366 dead transitions. [2024-06-28 01:51:39,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 366 transitions, 5370 flow [2024-06-28 01:51:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:51:39,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:51:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 01:51:39,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:51:39,848 INFO L175 Difference]: Start difference. First operand has 155 places, 303 transitions, 4340 flow. Second operand 7 states and 182 transitions. [2024-06-28 01:51:39,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 366 transitions, 5370 flow [2024-06-28 01:51:40,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 366 transitions, 5091 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-28 01:51:40,492 INFO L231 Difference]: Finished difference. Result has 155 places, 303 transitions, 4331 flow [2024-06-28 01:51:40,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4077, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4331, PETRI_PLACES=155, PETRI_TRANSITIONS=303} [2024-06-28 01:51:40,493 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 104 predicate places. [2024-06-28 01:51:40,493 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 303 transitions, 4331 flow [2024-06-28 01:51:40,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:40,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:40,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:40,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:51:40,493 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:40,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:40,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1554751710, now seen corresponding path program 2 times [2024-06-28 01:51:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:40,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082962025] [2024-06-28 01:51:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:40,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:40,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:43,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:43,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082962025] [2024-06-28 01:51:43,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082962025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:43,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:43,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:51:43,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468315901] [2024-06-28 01:51:43,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:43,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:51:43,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:51:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:51:43,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:51:43,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 303 transitions, 4331 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:43,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:43,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:51:43,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:46,660 INFO L124 PetriNetUnfolderBase]: 8886/13012 cut-off events. [2024-06-28 01:51:46,661 INFO L125 PetriNetUnfolderBase]: For 174100/174112 co-relation queries the response was YES. [2024-06-28 01:51:46,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77599 conditions, 13012 events. 8886/13012 cut-off events. For 174100/174112 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 76793 event pairs, 1613 based on Foata normal form. 30/13041 useless extension candidates. Maximal degree in co-relation 77527. Up to 10804 conditions per place. [2024-06-28 01:51:46,789 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 286 selfloop transitions, 84 changer transitions 0/376 dead transitions. [2024-06-28 01:51:46,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 376 transitions, 5439 flow [2024-06-28 01:51:46,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:51:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:51:46,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:51:46,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558510638297872 [2024-06-28 01:51:46,790 INFO L175 Difference]: Start difference. First operand has 155 places, 303 transitions, 4331 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:51:46,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 376 transitions, 5439 flow [2024-06-28 01:51:47,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 376 transitions, 5204 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:51:47,427 INFO L231 Difference]: Finished difference. Result has 157 places, 307 transitions, 4384 flow [2024-06-28 01:51:47,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4098, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4384, PETRI_PLACES=157, PETRI_TRANSITIONS=307} [2024-06-28 01:51:47,427 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 106 predicate places. [2024-06-28 01:51:47,427 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 307 transitions, 4384 flow [2024-06-28 01:51:47,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:47,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:47,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:47,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:51:47,428 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:47,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:47,428 INFO L85 PathProgramCache]: Analyzing trace with hash -730428902, now seen corresponding path program 3 times [2024-06-28 01:51:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:47,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229225168] [2024-06-28 01:51:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:47,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:50,722 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 01:51:50,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:50,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229225168] [2024-06-28 01:51:50,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229225168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:50,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:50,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:51:50,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376650589] [2024-06-28 01:51:50,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:50,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:51:50,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:50,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:51:50,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:51:50,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:51:50,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 307 transitions, 4384 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:50,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:50,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:51:50,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:53,762 INFO L124 PetriNetUnfolderBase]: 8936/13245 cut-off events. [2024-06-28 01:51:53,762 INFO L125 PetriNetUnfolderBase]: For 175820/175863 co-relation queries the response was YES. [2024-06-28 01:51:53,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79674 conditions, 13245 events. 8936/13245 cut-off events. For 175820/175863 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 79498 event pairs, 1753 based on Foata normal form. 43/13285 useless extension candidates. Maximal degree in co-relation 79601. Up to 12188 conditions per place. [2024-06-28 01:51:53,884 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 328 selfloop transitions, 34 changer transitions 0/368 dead transitions. [2024-06-28 01:51:53,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 368 transitions, 5447 flow [2024-06-28 01:51:53,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:51:53,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:51:53,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:51:53,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-28 01:51:53,886 INFO L175 Difference]: Start difference. First operand has 157 places, 307 transitions, 4384 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:51:53,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 368 transitions, 5447 flow [2024-06-28 01:51:54,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 368 transitions, 5201 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 01:51:54,467 INFO L231 Difference]: Finished difference. Result has 158 places, 309 transitions, 4269 flow [2024-06-28 01:51:54,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4156, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4269, PETRI_PLACES=158, PETRI_TRANSITIONS=309} [2024-06-28 01:51:54,468 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 107 predicate places. [2024-06-28 01:51:54,468 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 309 transitions, 4269 flow [2024-06-28 01:51:54,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:54,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:54,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:54,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:51:54,468 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:51:54,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash -730132232, now seen corresponding path program 4 times [2024-06-28 01:51:54,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:54,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686384882] [2024-06-28 01:51:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:54,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:57,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:57,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:57,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686384882] [2024-06-28 01:51:57,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686384882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:57,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:57,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:51:57,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494264930] [2024-06-28 01:51:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:57,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:51:57,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:57,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:51:57,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:51:57,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:51:57,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 309 transitions, 4269 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:57,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:57,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:51:57,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:00,771 INFO L124 PetriNetUnfolderBase]: 8936/13251 cut-off events. [2024-06-28 01:52:00,771 INFO L125 PetriNetUnfolderBase]: For 164039/164082 co-relation queries the response was YES. [2024-06-28 01:52:00,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77718 conditions, 13251 events. 8936/13251 cut-off events. For 164039/164082 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 79606 event pairs, 1669 based on Foata normal form. 43/13291 useless extension candidates. Maximal degree in co-relation 77644. Up to 11986 conditions per place. [2024-06-28 01:52:00,918 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 329 selfloop transitions, 43 changer transitions 0/378 dead transitions. [2024-06-28 01:52:00,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 378 transitions, 5452 flow [2024-06-28 01:52:00,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:52:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:52:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:52:00,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-28 01:52:00,919 INFO L175 Difference]: Start difference. First operand has 158 places, 309 transitions, 4269 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:52:00,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 378 transitions, 5452 flow [2024-06-28 01:52:01,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 378 transitions, 5377 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:52:01,405 INFO L231 Difference]: Finished difference. Result has 161 places, 316 transitions, 4422 flow [2024-06-28 01:52:01,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4194, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4422, PETRI_PLACES=161, PETRI_TRANSITIONS=316} [2024-06-28 01:52:01,405 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 110 predicate places. [2024-06-28 01:52:01,405 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 316 transitions, 4422 flow [2024-06-28 01:52:01,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:01,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:01,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:01,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:52:01,406 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:01,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:01,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1887976967, now seen corresponding path program 1 times [2024-06-28 01:52:01,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:01,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534092517] [2024-06-28 01:52:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:03,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:03,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534092517] [2024-06-28 01:52:03,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534092517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:03,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:03,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:52:03,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852959954] [2024-06-28 01:52:03,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:03,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:52:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:03,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:52:03,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:52:03,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:52:03,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 316 transitions, 4422 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:03,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:03,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:52:03,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:06,203 INFO L124 PetriNetUnfolderBase]: 8769/13292 cut-off events. [2024-06-28 01:52:06,204 INFO L125 PetriNetUnfolderBase]: For 183151/183408 co-relation queries the response was YES. [2024-06-28 01:52:06,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78373 conditions, 13292 events. 8769/13292 cut-off events. For 183151/183408 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 82504 event pairs, 2247 based on Foata normal form. 208/13416 useless extension candidates. Maximal degree in co-relation 78297. Up to 11990 conditions per place. [2024-06-28 01:52:06,329 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 317 selfloop transitions, 26 changer transitions 0/358 dead transitions. [2024-06-28 01:52:06,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 358 transitions, 5404 flow [2024-06-28 01:52:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:52:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:52:06,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:52:06,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 01:52:06,331 INFO L175 Difference]: Start difference. First operand has 161 places, 316 transitions, 4422 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:52:06,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 358 transitions, 5404 flow [2024-06-28 01:52:06,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 358 transitions, 5323 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 01:52:06,801 INFO L231 Difference]: Finished difference. Result has 165 places, 326 transitions, 4593 flow [2024-06-28 01:52:06,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4341, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4593, PETRI_PLACES=165, PETRI_TRANSITIONS=326} [2024-06-28 01:52:06,801 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 114 predicate places. [2024-06-28 01:52:06,801 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 326 transitions, 4593 flow [2024-06-28 01:52:06,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:06,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:06,802 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 01:52:06,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:52:06,802 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:06,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:06,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1974212865, now seen corresponding path program 1 times [2024-06-28 01:52:06,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:06,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552773832] [2024-06-28 01:52:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:06,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:10,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:10,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552773832] [2024-06-28 01:52:10,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552773832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:10,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:10,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:10,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294005858] [2024-06-28 01:52:10,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:10,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:10,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:10,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:10,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:10,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 326 transitions, 4593 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:10,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:10,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:10,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:14,632 INFO L124 PetriNetUnfolderBase]: 12708/18971 cut-off events. [2024-06-28 01:52:14,633 INFO L125 PetriNetUnfolderBase]: For 313839/313851 co-relation queries the response was YES. [2024-06-28 01:52:14,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111114 conditions, 18971 events. 12708/18971 cut-off events. For 313839/313851 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 121922 event pairs, 1834 based on Foata normal form. 76/19046 useless extension candidates. Maximal degree in co-relation 111035. Up to 7654 conditions per place. [2024-06-28 01:52:14,840 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 267 selfloop transitions, 204 changer transitions 0/477 dead transitions. [2024-06-28 01:52:14,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 477 transitions, 6709 flow [2024-06-28 01:52:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:52:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:52:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 317 transitions. [2024-06-28 01:52:14,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6131528046421664 [2024-06-28 01:52:14,842 INFO L175 Difference]: Start difference. First operand has 165 places, 326 transitions, 4593 flow. Second operand 11 states and 317 transitions. [2024-06-28 01:52:14,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 477 transitions, 6709 flow [2024-06-28 01:52:15,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 477 transitions, 6604 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-28 01:52:15,719 INFO L231 Difference]: Finished difference. Result has 176 places, 338 transitions, 5298 flow [2024-06-28 01:52:15,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4488, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5298, PETRI_PLACES=176, PETRI_TRANSITIONS=338} [2024-06-28 01:52:15,720 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 125 predicate places. [2024-06-28 01:52:15,721 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 338 transitions, 5298 flow [2024-06-28 01:52:15,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:15,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:15,721 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 01:52:15,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:52:15,721 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:15,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:15,722 INFO L85 PathProgramCache]: Analyzing trace with hash 269163419, now seen corresponding path program 2 times [2024-06-28 01:52:15,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:15,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743725596] [2024-06-28 01:52:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:15,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:19,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:19,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743725596] [2024-06-28 01:52:19,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743725596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:19,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:19,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:19,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885619519] [2024-06-28 01:52:19,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:19,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:19,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:19,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:19,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:19,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:19,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 338 transitions, 5298 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:19,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:19,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:19,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:24,878 INFO L124 PetriNetUnfolderBase]: 13848/20686 cut-off events. [2024-06-28 01:52:24,878 INFO L125 PetriNetUnfolderBase]: For 389856/389868 co-relation queries the response was YES. [2024-06-28 01:52:25,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125453 conditions, 20686 events. 13848/20686 cut-off events. For 389856/389868 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 135241 event pairs, 3423 based on Foata normal form. 86/20771 useless extension candidates. Maximal degree in co-relation 125370. Up to 14971 conditions per place. [2024-06-28 01:52:25,096 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 264 selfloop transitions, 195 changer transitions 0/465 dead transitions. [2024-06-28 01:52:25,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 465 transitions, 6933 flow [2024-06-28 01:52:25,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:25,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:25,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 326 transitions. [2024-06-28 01:52:25,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5780141843971631 [2024-06-28 01:52:25,098 INFO L175 Difference]: Start difference. First operand has 176 places, 338 transitions, 5298 flow. Second operand 12 states and 326 transitions. [2024-06-28 01:52:25,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 465 transitions, 6933 flow [2024-06-28 01:52:26,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 465 transitions, 6604 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-28 01:52:26,567 INFO L231 Difference]: Finished difference. Result has 183 places, 341 transitions, 5471 flow [2024-06-28 01:52:26,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4979, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5471, PETRI_PLACES=183, PETRI_TRANSITIONS=341} [2024-06-28 01:52:26,568 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 132 predicate places. [2024-06-28 01:52:26,568 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 341 transitions, 5471 flow [2024-06-28 01:52:26,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:26,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:26,569 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 01:52:26,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:52:26,569 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:26,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:26,569 INFO L85 PathProgramCache]: Analyzing trace with hash -737679913, now seen corresponding path program 3 times [2024-06-28 01:52:26,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:26,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083610348] [2024-06-28 01:52:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:26,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:30,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:30,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083610348] [2024-06-28 01:52:30,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083610348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:30,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:30,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:30,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391588363] [2024-06-28 01:52:30,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:30,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:30,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:30,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:30,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:30,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:30,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 341 transitions, 5471 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:30,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:30,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:30,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:36,082 INFO L124 PetriNetUnfolderBase]: 15799/23638 cut-off events. [2024-06-28 01:52:36,082 INFO L125 PetriNetUnfolderBase]: For 426705/426717 co-relation queries the response was YES. [2024-06-28 01:52:36,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139047 conditions, 23638 events. 15799/23638 cut-off events. For 426705/426717 co-relation queries the response was YES. Maximal size of possible extension queue 967. Compared 158389 event pairs, 3757 based on Foata normal form. 76/23713 useless extension candidates. Maximal degree in co-relation 138962. Up to 14690 conditions per place. [2024-06-28 01:52:36,310 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 278 selfloop transitions, 202 changer transitions 0/486 dead transitions. [2024-06-28 01:52:36,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 486 transitions, 7380 flow [2024-06-28 01:52:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 337 transitions. [2024-06-28 01:52:36,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975177304964538 [2024-06-28 01:52:36,312 INFO L175 Difference]: Start difference. First operand has 183 places, 341 transitions, 5471 flow. Second operand 12 states and 337 transitions. [2024-06-28 01:52:36,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 486 transitions, 7380 flow [2024-06-28 01:52:37,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 486 transitions, 6934 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-28 01:52:37,712 INFO L231 Difference]: Finished difference. Result has 186 places, 350 transitions, 5675 flow [2024-06-28 01:52:37,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5025, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5675, PETRI_PLACES=186, PETRI_TRANSITIONS=350} [2024-06-28 01:52:37,712 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 135 predicate places. [2024-06-28 01:52:37,712 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 350 transitions, 5675 flow [2024-06-28 01:52:37,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:37,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:37,713 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 01:52:37,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:52:37,713 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:37,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:37,714 INFO L85 PathProgramCache]: Analyzing trace with hash -451777607, now seen corresponding path program 4 times [2024-06-28 01:52:37,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:37,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674599704] [2024-06-28 01:52:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:37,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:52:41,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:41,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674599704] [2024-06-28 01:52:41,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674599704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:41,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:41,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:41,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561304197] [2024-06-28 01:52:41,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:41,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:41,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:41,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:41,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:41,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:41,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 350 transitions, 5675 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:41,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:41,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:41,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:52:48,491 INFO L124 PetriNetUnfolderBase]: 18481/28418 cut-off events. [2024-06-28 01:52:48,491 INFO L125 PetriNetUnfolderBase]: For 516680/516684 co-relation queries the response was YES. [2024-06-28 01:52:48,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165072 conditions, 28418 events. 18481/28418 cut-off events. For 516680/516684 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 203459 event pairs, 9214 based on Foata normal form. 76/28493 useless extension candidates. Maximal degree in co-relation 164985. Up to 23171 conditions per place. [2024-06-28 01:52:48,776 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 415 selfloop transitions, 124 changer transitions 0/545 dead transitions. [2024-06-28 01:52:48,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 545 transitions, 8881 flow [2024-06-28 01:52:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:52:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:52:48,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 310 transitions. [2024-06-28 01:52:48,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.549645390070922 [2024-06-28 01:52:48,778 INFO L175 Difference]: Start difference. First operand has 186 places, 350 transitions, 5675 flow. Second operand 12 states and 310 transitions. [2024-06-28 01:52:48,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 545 transitions, 8881 flow [2024-06-28 01:52:50,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 545 transitions, 8432 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 01:52:50,488 INFO L231 Difference]: Finished difference. Result has 197 places, 425 transitions, 7205 flow [2024-06-28 01:52:50,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5314, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7205, PETRI_PLACES=197, PETRI_TRANSITIONS=425} [2024-06-28 01:52:50,489 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 146 predicate places. [2024-06-28 01:52:50,489 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 425 transitions, 7205 flow [2024-06-28 01:52:50,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:50,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:50,489 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 01:52:50,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:52:50,489 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:52:50,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:50,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1691031255, now seen corresponding path program 5 times [2024-06-28 01:52:50,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:50,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743690136] [2024-06-28 01:52:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:50,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:52:53,156 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 01:52:53,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:52:53,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743690136] [2024-06-28 01:52:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743690136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:52:53,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:52:53,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:52:53,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47953916] [2024-06-28 01:52:53,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:52:53,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:52:53,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:52:53,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:52:53,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:52:53,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-28 01:52:53,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 425 transitions, 7205 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:53,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:52:53,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-28 01:52:53,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:53:02,259 INFO L124 PetriNetUnfolderBase]: 22987/34728 cut-off events. [2024-06-28 01:53:02,259 INFO L125 PetriNetUnfolderBase]: For 625756/625765 co-relation queries the response was YES. [2024-06-28 01:53:02,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211677 conditions, 34728 events. 22987/34728 cut-off events. For 625756/625765 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 248948 event pairs, 8441 based on Foata normal form. 82/34809 useless extension candidates. Maximal degree in co-relation 211581. Up to 25911 conditions per place. [2024-06-28 01:53:02,857 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 417 selfloop transitions, 245 changer transitions 0/668 dead transitions. [2024-06-28 01:53:02,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 668 transitions, 11532 flow [2024-06-28 01:53:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:53:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:53:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 358 transitions. [2024-06-28 01:53:02,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5859247135842881 [2024-06-28 01:53:02,859 INFO L175 Difference]: Start difference. First operand has 197 places, 425 transitions, 7205 flow. Second operand 13 states and 358 transitions. [2024-06-28 01:53:02,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 668 transitions, 11532 flow