./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe008_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe008_power.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe008_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe008_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:56:20,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:56:20,268 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:56:20,274 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:56:20,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:56:20,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:56:20,306 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:56:20,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:56:20,307 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:56:20,308 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:56:20,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:56:20,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:56:20,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:56:20,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:56:20,312 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:56:20,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:56:20,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:56:20,313 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:56:20,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:56:20,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:56:20,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:56:20,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:56:20,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:56:20,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:56:20,314 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:56:20,314 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:56:20,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:56:20,315 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:56:20,315 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:56:20,315 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:56:20,316 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:56:20,316 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:56:20,316 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:56:20,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:56:20,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:56:20,317 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:56:20,317 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:56:20,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:56:20,317 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:56:20,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:56:20,318 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:56:20,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:56:20,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:56:20,318 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:56:20,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:56:20,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:56:20,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:56:20,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:56:20,539 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:56:20,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_power.opt.i [2024-06-28 01:56:21,713 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:56:21,922 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:56:21,923 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_power.opt.i [2024-06-28 01:56:21,944 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf9de2dc/22565c804e124ff281a4bd32bfe513e7/FLAG46e55afca [2024-06-28 01:56:21,956 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaf9de2dc/22565c804e124ff281a4bd32bfe513e7 [2024-06-28 01:56:21,958 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:56:21,959 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:56:21,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe008_power.opt.yml/witness.yml [2024-06-28 01:56:22,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:56:22,134 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:56:22,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:56:22,145 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:56:22,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:56:22,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:56:21" (1/2) ... [2024-06-28 01:56:22,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afc4531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:22, skipping insertion in model container [2024-06-28 01:56:22,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:56:21" (1/2) ... [2024-06-28 01:56:22,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@416985a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:56:22, skipping insertion in model container [2024-06-28 01:56:22,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:56:22" (2/2) ... [2024-06-28 01:56:22,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afc4531 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22, skipping insertion in model container [2024-06-28 01:56:22,153 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:56:22" (2/2) ... [2024-06-28 01:56:22,153 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:56:22,246 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:56:22,247 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ((((((((((((((((((((((((((((((((! multithreaded || ((z == 0 || z == 1) || z == 2)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:56:22,247 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ((((((((((((((((((((((((((((((((! multithreaded || ((z == 0 || z == 1) || z == 2)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:56:22,247 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ((((((((((((((((((((((((((((((((! multithreaded || ((z == 0 || z == 1) || z == 2)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p1_EAX$flush_delayed == (_Bool)0) && __unbuffered_p1_EAX$mem_tmp == 0) && __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p1_EAX$w_buff0 == 0) && __unbuffered_p1_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p1_EAX$w_buff1 == 0) && __unbuffered_p1_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1)))) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (y == 0 || y == 1)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:56:22,248 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:56:22,248 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-28 01:56:22,284 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:56:22,408 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/safe008_power.opt.i[951,964] [2024-06-28 01:56:22,571 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:56:22,585 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:56:22,610 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/safe008_power.opt.i[951,964] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:56:22,710 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:56:22,740 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:56:22,740 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22 WrapperNode [2024-06-28 01:56:22,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:56:22,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:56:22,741 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:56:22,741 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:56:22,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,796 INFO L138 Inliner]: procedures = 175, calls = 85, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 250 [2024-06-28 01:56:22,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:56:22,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:56:22,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:56:22,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:56:22,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,826 INFO L175 MemorySlicer]: Split 44 memory accesses to 2 slices as follows [2, 42]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 6 writes are split as follows [0, 6]. [2024-06-28 01:56:22,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:56:22,849 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:56:22,849 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:56:22,849 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:56:22,850 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (1/1) ... [2024-06-28 01:56:22,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:56:22,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:56:22,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:56:22,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:56:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:56:22,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:56:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:56:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:56:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:56:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:56:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:56:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:56:22,920 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:56:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:56:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:56:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:56:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:56:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:56:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:56:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:56:22,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:56:22,925 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:56:23,072 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:56:23,074 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:56:23,509 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:56:23,509 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:56:23,850 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:56:23,850 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:56:23,850 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:56:23 BoogieIcfgContainer [2024-06-28 01:56:23,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:56:23,853 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:56:23,853 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:56:23,855 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:56:23,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:56:21" (1/4) ... [2024-06-28 01:56:23,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e013d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:56:23, skipping insertion in model container [2024-06-28 01:56:23,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:56:22" (2/4) ... [2024-06-28 01:56:23,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e013d26 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:56:23, skipping insertion in model container [2024-06-28 01:56:23,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:56:22" (3/4) ... [2024-06-28 01:56:23,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e013d26 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:56:23, skipping insertion in model container [2024-06-28 01:56:23,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:56:23" (4/4) ... [2024-06-28 01:56:23,858 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_power.opt.i [2024-06-28 01:56:23,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:56:23,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:56:23,897 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:56:23,964 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:56:23,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:56:24,030 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:56:24,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:56:24,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 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 46. Up to 2 conditions per place. [2024-06-28 01:56:24,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:56:24,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:56:24,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:56:24,072 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;@1e4d4cf1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:56:24,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:56:24,076 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:56:24,077 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:56:24,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:56:24,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:24,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:56:24,078 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:24,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:24,082 INFO L85 PathProgramCache]: Analyzing trace with hash 831108142, now seen corresponding path program 1 times [2024-06-28 01:56:24,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:24,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214771790] [2024-06-28 01:56:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:24,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:25,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:25,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214771790] [2024-06-28 01:56:25,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214771790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:25,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:25,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:56:25,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686383045] [2024-06-28 01:56:25,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:25,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:56:25,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:25,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:56:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:56:25,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:56:25,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:25,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:25,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:56:25,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:27,289 INFO L124 PetriNetUnfolderBase]: 5400/8378 cut-off events. [2024-06-28 01:56:27,290 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-28 01:56:27,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16226 conditions, 8378 events. 5400/8378 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 50247 event pairs, 3802 based on Foata normal form. 210/7783 useless extension candidates. Maximal degree in co-relation 16214. Up to 7729 conditions per place. [2024-06-28 01:56:27,330 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 48 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-28 01:56:27,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 243 flow [2024-06-28 01:56:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:56:27,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:56:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-06-28 01:56:27,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 01:56:27,342 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 90 transitions. [2024-06-28 01:56:27,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 243 flow [2024-06-28 01:56:27,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:56:27,350 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 01:56:27,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 01:56:27,355 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:56:27,355 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 01:56:27,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:27,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:27,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-28 01:56:27,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:56:27,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:27,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:27,357 INFO L85 PathProgramCache]: Analyzing trace with hash -5407962, now seen corresponding path program 1 times [2024-06-28 01:56:27,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:27,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993806385] [2024-06-28 01:56:27,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:27,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:27,444 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 01:56:27,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:27,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993806385] [2024-06-28 01:56:27,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993806385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:27,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:27,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:56:27,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012404830] [2024-06-28 01:56:27,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:27,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:56:27,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:27,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:56:27,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:56:27,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-28 01:56:27,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:27,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:27,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-28 01:56:27,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:28,088 INFO L124 PetriNetUnfolderBase]: 1742/2922 cut-off events. [2024-06-28 01:56:28,089 INFO L125 PetriNetUnfolderBase]: For 356/388 co-relation queries the response was YES. [2024-06-28 01:56:28,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6054 conditions, 2922 events. 1742/2922 cut-off events. For 356/388 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 19502 event pairs, 461 based on Foata normal form. 0/2757 useless extension candidates. Maximal degree in co-relation 6042. Up to 1783 conditions per place. [2024-06-28 01:56:28,103 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 52 selfloop transitions, 2 changer transitions 1/71 dead transitions. [2024-06-28 01:56:28,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 71 transitions, 301 flow [2024-06-28 01:56:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:56:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:56:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-06-28 01:56:28,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-06-28 01:56:28,107 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 3 states and 105 transitions. [2024-06-28 01:56:28,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 71 transitions, 301 flow [2024-06-28 01:56:28,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:56:28,110 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 128 flow [2024-06-28 01:56:28,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-28 01:56:28,113 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:56:28,113 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 128 flow [2024-06-28 01:56:28,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:28,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:28,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:28,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:56:28,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:28,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash -167647409, now seen corresponding path program 1 times [2024-06-28 01:56:28,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:28,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441541404] [2024-06-28 01:56:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:28,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:29,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:29,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:29,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441541404] [2024-06-28 01:56:29,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441541404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:29,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:29,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:56:29,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394048438] [2024-06-28 01:56:29,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:29,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:56:29,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:29,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:56:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:56:29,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:56:29,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:29,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:29,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:56:29,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:30,494 INFO L124 PetriNetUnfolderBase]: 4614/7178 cut-off events. [2024-06-28 01:56:30,494 INFO L125 PetriNetUnfolderBase]: For 1360/1368 co-relation queries the response was YES. [2024-06-28 01:56:30,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15677 conditions, 7178 events. 4614/7178 cut-off events. For 1360/1368 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 41859 event pairs, 2797 based on Foata normal form. 8/7003 useless extension candidates. Maximal degree in co-relation 15664. Up to 6511 conditions per place. [2024-06-28 01:56:30,521 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 63 selfloop transitions, 14 changer transitions 1/86 dead transitions. [2024-06-28 01:56:30,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 388 flow [2024-06-28 01:56:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:56:30,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:56:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-28 01:56:30,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-28 01:56:30,523 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 128 flow. Second operand 4 states and 122 transitions. [2024-06-28 01:56:30,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 388 flow [2024-06-28 01:56:30,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:56:30,527 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 217 flow [2024-06-28 01:56:30,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-06-28 01:56:30,528 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 01:56:30,528 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 217 flow [2024-06-28 01:56:30,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:30,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:30,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:30,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:56:30,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:30,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash -942722673, now seen corresponding path program 1 times [2024-06-28 01:56:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326673737] [2024-06-28 01:56:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:31,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:31,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326673737] [2024-06-28 01:56:31,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326673737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:31,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:31,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:56:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425369393] [2024-06-28 01:56:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:31,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:56:31,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:56:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:56:31,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:56:31,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 217 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 01:56:31,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:31,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:56:31,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:32,856 INFO L124 PetriNetUnfolderBase]: 4207/6603 cut-off events. [2024-06-28 01:56:32,856 INFO L125 PetriNetUnfolderBase]: For 3149/3166 co-relation queries the response was YES. [2024-06-28 01:56:32,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16260 conditions, 6603 events. 4207/6603 cut-off events. For 3149/3166 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 38519 event pairs, 2251 based on Foata normal form. 11/6431 useless extension candidates. Maximal degree in co-relation 16245. Up to 5941 conditions per place. [2024-06-28 01:56:32,886 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 87 selfloop transitions, 18 changer transitions 0/113 dead transitions. [2024-06-28 01:56:32,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 113 transitions, 612 flow [2024-06-28 01:56:32,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:56:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:56:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-28 01:56:32,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6125 [2024-06-28 01:56:32,890 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 217 flow. Second operand 5 states and 147 transitions. [2024-06-28 01:56:32,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 113 transitions, 612 flow [2024-06-28 01:56:32,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 113 transitions, 602 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 01:56:32,897 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 392 flow [2024-06-28 01:56:32,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=392, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2024-06-28 01:56:32,904 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-28 01:56:32,904 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 392 flow [2024-06-28 01:56:32,904 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 01:56:32,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:32,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:32,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:56:32,905 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:32,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:32,905 INFO L85 PathProgramCache]: Analyzing trace with hash 840369420, now seen corresponding path program 1 times [2024-06-28 01:56:32,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:32,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025542053] [2024-06-28 01:56:32,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:32,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:34,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025542053] [2024-06-28 01:56:34,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025542053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:34,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:34,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:56:34,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090468079] [2024-06-28 01:56:34,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:34,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:56:34,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:34,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:56:34,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:56:34,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:56:34,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 392 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 01:56:34,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:34,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:56:34,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:35,873 INFO L124 PetriNetUnfolderBase]: 4244/6652 cut-off events. [2024-06-28 01:56:35,873 INFO L125 PetriNetUnfolderBase]: For 6802/6824 co-relation queries the response was YES. [2024-06-28 01:56:35,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19331 conditions, 6652 events. 4244/6652 cut-off events. For 6802/6824 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 38748 event pairs, 1912 based on Foata normal form. 14/6483 useless extension candidates. Maximal degree in co-relation 19311. Up to 5932 conditions per place. [2024-06-28 01:56:35,904 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 101 selfloop transitions, 23 changer transitions 0/132 dead transitions. [2024-06-28 01:56:35,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 132 transitions, 820 flow [2024-06-28 01:56:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:56:35,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:56:35,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-28 01:56:35,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-28 01:56:35,911 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 392 flow. Second operand 6 states and 177 transitions. [2024-06-28 01:56:35,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 132 transitions, 820 flow [2024-06-28 01:56:35,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 132 transitions, 792 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 01:56:35,919 INFO L231 Difference]: Finished difference. Result has 68 places, 78 transitions, 464 flow [2024-06-28 01:56:35,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=68, PETRI_TRANSITIONS=78} [2024-06-28 01:56:35,921 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 01:56:35,922 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 78 transitions, 464 flow [2024-06-28 01:56:35,922 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 01:56:35,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:35,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:35,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:56:35,922 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:35,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash 281649486, now seen corresponding path program 1 times [2024-06-28 01:56:35,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:35,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966136368] [2024-06-28 01:56:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:37,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:37,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966136368] [2024-06-28 01:56:37,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966136368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:37,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:37,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:56:37,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521009435] [2024-06-28 01:56:37,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:37,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:56:37,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:37,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:56:37,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:56:38,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:56:38,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 78 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:38,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:38,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:56:38,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:39,497 INFO L124 PetriNetUnfolderBase]: 4433/6921 cut-off events. [2024-06-28 01:56:39,497 INFO L125 PetriNetUnfolderBase]: For 11274/11296 co-relation queries the response was YES. [2024-06-28 01:56:39,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22010 conditions, 6921 events. 4433/6921 cut-off events. For 11274/11296 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 40179 event pairs, 1548 based on Foata normal form. 26/6764 useless extension candidates. Maximal degree in co-relation 21988. Up to 5884 conditions per place. [2024-06-28 01:56:39,529 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 109 selfloop transitions, 45 changer transitions 0/162 dead transitions. [2024-06-28 01:56:39,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 162 transitions, 1102 flow [2024-06-28 01:56:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:56:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:56:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-06-28 01:56:39,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 01:56:39,530 INFO L175 Difference]: Start difference. First operand has 68 places, 78 transitions, 464 flow. Second operand 7 states and 210 transitions. [2024-06-28 01:56:39,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 162 transitions, 1102 flow [2024-06-28 01:56:39,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 162 transitions, 1040 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:56:39,538 INFO L231 Difference]: Finished difference. Result has 72 places, 90 transitions, 647 flow [2024-06-28 01:56:39,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=647, PETRI_PLACES=72, PETRI_TRANSITIONS=90} [2024-06-28 01:56:39,540 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-06-28 01:56:39,541 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 90 transitions, 647 flow [2024-06-28 01:56:39,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:39,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:39,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:39,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:56:39,541 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:39,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1903844450, now seen corresponding path program 1 times [2024-06-28 01:56:39,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:39,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254360101] [2024-06-28 01:56:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:39,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:41,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:41,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254360101] [2024-06-28 01:56:41,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254360101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:41,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:41,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:56:41,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978338321] [2024-06-28 01:56:41,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:41,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:56:41,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:41,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:56:41,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:56:41,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:41,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 90 transitions, 647 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:41,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:41,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:41,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:42,863 INFO L124 PetriNetUnfolderBase]: 4428/6914 cut-off events. [2024-06-28 01:56:42,864 INFO L125 PetriNetUnfolderBase]: For 18768/18790 co-relation queries the response was YES. [2024-06-28 01:56:42,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24704 conditions, 6914 events. 4428/6914 cut-off events. For 18768/18790 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 40150 event pairs, 1781 based on Foata normal form. 11/6742 useless extension candidates. Maximal degree in co-relation 24678. Up to 6330 conditions per place. [2024-06-28 01:56:42,937 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 101 selfloop transitions, 13 changer transitions 0/121 dead transitions. [2024-06-28 01:56:42,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 121 transitions, 997 flow [2024-06-28 01:56:42,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:56:42,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:56:42,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 01:56:42,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-28 01:56:42,939 INFO L175 Difference]: Start difference. First operand has 72 places, 90 transitions, 647 flow. Second operand 5 states and 118 transitions. [2024-06-28 01:56:42,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 121 transitions, 997 flow [2024-06-28 01:56:42,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 933 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 01:56:42,959 INFO L231 Difference]: Finished difference. Result has 76 places, 96 transitions, 686 flow [2024-06-28 01:56:42,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=686, PETRI_PLACES=76, PETRI_TRANSITIONS=96} [2024-06-28 01:56:42,960 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-28 01:56:42,960 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 96 transitions, 686 flow [2024-06-28 01:56:42,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:42,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:42,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:42,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:56:42,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:42,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:42,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1110361928, now seen corresponding path program 1 times [2024-06-28 01:56:42,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:42,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241355833] [2024-06-28 01:56:42,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:42,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:44,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:44,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241355833] [2024-06-28 01:56:44,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241355833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:44,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:44,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:56:44,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157962944] [2024-06-28 01:56:44,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:44,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:56:44,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:44,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:56:44,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:56:44,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:56:44,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 96 transitions, 686 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:44,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:44,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:56:44,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:46,423 INFO L124 PetriNetUnfolderBase]: 5232/8131 cut-off events. [2024-06-28 01:56:46,423 INFO L125 PetriNetUnfolderBase]: For 24499/24499 co-relation queries the response was YES. [2024-06-28 01:56:46,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29386 conditions, 8131 events. 5232/8131 cut-off events. For 24499/24499 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 47486 event pairs, 2114 based on Foata normal form. 4/7920 useless extension candidates. Maximal degree in co-relation 29356. Up to 7403 conditions per place. [2024-06-28 01:56:46,467 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 126 selfloop transitions, 15 changer transitions 0/147 dead transitions. [2024-06-28 01:56:46,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 147 transitions, 1199 flow [2024-06-28 01:56:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:56:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:56:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:56:46,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:56:46,469 INFO L175 Difference]: Start difference. First operand has 76 places, 96 transitions, 686 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:56:46,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 147 transitions, 1199 flow [2024-06-28 01:56:46,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 147 transitions, 1177 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-28 01:56:46,489 INFO L231 Difference]: Finished difference. Result has 83 places, 109 transitions, 849 flow [2024-06-28 01:56:46,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=849, PETRI_PLACES=83, PETRI_TRANSITIONS=109} [2024-06-28 01:56:46,490 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-28 01:56:46,490 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 109 transitions, 849 flow [2024-06-28 01:56:46,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:56:46,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:46,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:46,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:56:46,491 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:46,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:46,491 INFO L85 PathProgramCache]: Analyzing trace with hash 618403349, now seen corresponding path program 1 times [2024-06-28 01:56:46,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:46,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324199753] [2024-06-28 01:56:46,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:46,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:48,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:48,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324199753] [2024-06-28 01:56:48,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324199753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:48,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:48,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:56:48,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850453628] [2024-06-28 01:56:48,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:48,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:56:48,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:48,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:56:48,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:56:48,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:48,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 109 transitions, 849 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 01:56:48,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:48,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:48,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:49,926 INFO L124 PetriNetUnfolderBase]: 5159/7906 cut-off events. [2024-06-28 01:56:49,926 INFO L125 PetriNetUnfolderBase]: For 31760/31996 co-relation queries the response was YES. [2024-06-28 01:56:49,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31395 conditions, 7906 events. 5159/7906 cut-off events. For 31760/31996 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 45946 event pairs, 1858 based on Foata normal form. 88/7791 useless extension candidates. Maximal degree in co-relation 31360. Up to 6892 conditions per place. [2024-06-28 01:56:49,968 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 123 selfloop transitions, 37 changer transitions 0/170 dead transitions. [2024-06-28 01:56:49,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 170 transitions, 1499 flow [2024-06-28 01:56:49,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:56:49,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:56:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-06-28 01:56:49,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-06-28 01:56:49,969 INFO L175 Difference]: Start difference. First operand has 83 places, 109 transitions, 849 flow. Second operand 6 states and 158 transitions. [2024-06-28 01:56:49,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 170 transitions, 1499 flow [2024-06-28 01:56:49,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1493 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:56:49,999 INFO L231 Difference]: Finished difference. Result has 90 places, 122 transitions, 1099 flow [2024-06-28 01:56:49,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1099, PETRI_PLACES=90, PETRI_TRANSITIONS=122} [2024-06-28 01:56:49,999 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-28 01:56:49,999 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 122 transitions, 1099 flow [2024-06-28 01:56:50,000 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 01:56:50,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:50,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:50,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:56:50,000 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:50,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:50,001 INFO L85 PathProgramCache]: Analyzing trace with hash 626280449, now seen corresponding path program 2 times [2024-06-28 01:56:50,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:50,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922278079] [2024-06-28 01:56:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:50,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:51,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:51,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922278079] [2024-06-28 01:56:51,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922278079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:51,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:51,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:56:51,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187530127] [2024-06-28 01:56:51,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:51,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:56:51,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:56:51,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:56:51,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:51,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 122 transitions, 1099 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 01:56:51,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:51,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:51,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:53,488 INFO L124 PetriNetUnfolderBase]: 5269/8057 cut-off events. [2024-06-28 01:56:53,488 INFO L125 PetriNetUnfolderBase]: For 42381/42520 co-relation queries the response was YES. [2024-06-28 01:56:53,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34991 conditions, 8057 events. 5269/8057 cut-off events. For 42381/42520 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 46806 event pairs, 1800 based on Foata normal form. 33/7886 useless extension candidates. Maximal degree in co-relation 34951. Up to 7039 conditions per place. [2024-06-28 01:56:53,538 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 121 selfloop transitions, 39 changer transitions 0/170 dead transitions. [2024-06-28 01:56:53,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 170 transitions, 1681 flow [2024-06-28 01:56:53,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:56:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:56:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 01:56:53,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:56:53,540 INFO L175 Difference]: Start difference. First operand has 90 places, 122 transitions, 1099 flow. Second operand 6 states and 152 transitions. [2024-06-28 01:56:53,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 170 transitions, 1681 flow [2024-06-28 01:56:53,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 170 transitions, 1649 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-28 01:56:53,599 INFO L231 Difference]: Finished difference. Result has 97 places, 129 transitions, 1301 flow [2024-06-28 01:56:53,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1301, PETRI_PLACES=97, PETRI_TRANSITIONS=129} [2024-06-28 01:56:53,600 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-28 01:56:53,600 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 129 transitions, 1301 flow [2024-06-28 01:56:53,601 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 01:56:53,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:53,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:53,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:56:53,601 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:53,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1035036389, now seen corresponding path program 1 times [2024-06-28 01:56:53,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:53,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878242873] [2024-06-28 01:56:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:53,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:56:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:56:55,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:56:55,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878242873] [2024-06-28 01:56:55,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878242873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:56:55,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:56:55,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:56:55,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824722521] [2024-06-28 01:56:55,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:56:55,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:56:55,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:56:55,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:56:55,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:56:55,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:56:55,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 129 transitions, 1301 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 01:56:55,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:56:55,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:56:55,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:56:57,869 INFO L124 PetriNetUnfolderBase]: 5343/8328 cut-off events. [2024-06-28 01:56:57,869 INFO L125 PetriNetUnfolderBase]: For 47469/47865 co-relation queries the response was YES. [2024-06-28 01:56:57,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36972 conditions, 8328 events. 5343/8328 cut-off events. For 47469/47865 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 50019 event pairs, 2014 based on Foata normal form. 99/8169 useless extension candidates. Maximal degree in co-relation 36927. Up to 7442 conditions per place. [2024-06-28 01:56:57,916 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 162 selfloop transitions, 36 changer transitions 0/208 dead transitions. [2024-06-28 01:56:57,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 208 transitions, 2077 flow [2024-06-28 01:56:57,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:56:57,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:56:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:56:57,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 01:56:57,920 INFO L175 Difference]: Start difference. First operand has 97 places, 129 transitions, 1301 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:56:57,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 208 transitions, 2077 flow [2024-06-28 01:56:57,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 208 transitions, 2044 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:56:57,978 INFO L231 Difference]: Finished difference. Result has 105 places, 149 transitions, 1582 flow [2024-06-28 01:56:57,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1582, PETRI_PLACES=105, PETRI_TRANSITIONS=149} [2024-06-28 01:56:57,987 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-28 01:56:57,987 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 149 transitions, 1582 flow [2024-06-28 01:56:57,988 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 01:56:57,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:56:57,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:56:57,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:56:57,988 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:56:57,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:56:57,989 INFO L85 PathProgramCache]: Analyzing trace with hash -2112900291, now seen corresponding path program 2 times [2024-06-28 01:56:57,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:56:57,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570567883] [2024-06-28 01:56:57,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:56:57,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:56:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:00,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:00,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570567883] [2024-06-28 01:57:00,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570567883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:00,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:00,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:00,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628185241] [2024-06-28 01:57:00,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:00,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:00,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:00,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:00,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:00,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 149 transitions, 1582 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 01:57:00,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:00,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:00,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:01,984 INFO L124 PetriNetUnfolderBase]: 5454/8490 cut-off events. [2024-06-28 01:57:01,985 INFO L125 PetriNetUnfolderBase]: For 58143/58614 co-relation queries the response was YES. [2024-06-28 01:57:02,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39819 conditions, 8490 events. 5454/8490 cut-off events. For 58143/58614 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 51051 event pairs, 1962 based on Foata normal form. 141/8370 useless extension candidates. Maximal degree in co-relation 39770. Up to 7480 conditions per place. [2024-06-28 01:57:02,048 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 157 selfloop transitions, 46 changer transitions 0/213 dead transitions. [2024-06-28 01:57:02,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 213 transitions, 2343 flow [2024-06-28 01:57:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-28 01:57:02,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-06-28 01:57:02,050 INFO L175 Difference]: Start difference. First operand has 105 places, 149 transitions, 1582 flow. Second operand 7 states and 178 transitions. [2024-06-28 01:57:02,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 213 transitions, 2343 flow [2024-06-28 01:57:02,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 213 transitions, 2252 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:02,130 INFO L231 Difference]: Finished difference. Result has 110 places, 162 transitions, 1814 flow [2024-06-28 01:57:02,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1814, PETRI_PLACES=110, PETRI_TRANSITIONS=162} [2024-06-28 01:57:02,131 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-28 01:57:02,131 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 162 transitions, 1814 flow [2024-06-28 01:57:02,131 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 01:57:02,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:02,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:02,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:57:02,132 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:02,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:02,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2112780135, now seen corresponding path program 1 times [2024-06-28 01:57:02,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:02,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970653652] [2024-06-28 01:57:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:02,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:03,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:03,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970653652] [2024-06-28 01:57:03,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970653652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:03,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:03,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:03,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232090848] [2024-06-28 01:57:03,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:03,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:03,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:03,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:03,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:03,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:57:03,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 162 transitions, 1814 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:03,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:03,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:57:03,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:06,204 INFO L124 PetriNetUnfolderBase]: 5821/8908 cut-off events. [2024-06-28 01:57:06,205 INFO L125 PetriNetUnfolderBase]: For 65998/66006 co-relation queries the response was YES. [2024-06-28 01:57:06,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42711 conditions, 8908 events. 5821/8908 cut-off events. For 65998/66006 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 51390 event pairs, 1966 based on Foata normal form. 12/8716 useless extension candidates. Maximal degree in co-relation 42659. Up to 7993 conditions per place. [2024-06-28 01:57:06,265 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 208 selfloop transitions, 29 changer transitions 0/243 dead transitions. [2024-06-28 01:57:06,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 243 transitions, 2785 flow [2024-06-28 01:57:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:57:06,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-28 01:57:06,267 INFO L175 Difference]: Start difference. First operand has 110 places, 162 transitions, 1814 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:57:06,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 243 transitions, 2785 flow [2024-06-28 01:57:06,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 243 transitions, 2661 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:06,372 INFO L231 Difference]: Finished difference. Result has 116 places, 180 transitions, 2008 flow [2024-06-28 01:57:06,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2008, PETRI_PLACES=116, PETRI_TRANSITIONS=180} [2024-06-28 01:57:06,375 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2024-06-28 01:57:06,375 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 180 transitions, 2008 flow [2024-06-28 01:57:06,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:06,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:06,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:06,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:57:06,376 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:06,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash -2112780321, now seen corresponding path program 3 times [2024-06-28 01:57:06,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:06,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722154351] [2024-06-28 01:57:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:06,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:08,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:08,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:08,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722154351] [2024-06-28 01:57:08,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722154351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:08,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:08,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:08,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732339861] [2024-06-28 01:57:08,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:08,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:08,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:08,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:08,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:08,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:08,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 180 transitions, 2008 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 01:57:08,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:08,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:08,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:10,311 INFO L124 PetriNetUnfolderBase]: 5629/8752 cut-off events. [2024-06-28 01:57:10,311 INFO L125 PetriNetUnfolderBase]: For 76074/76536 co-relation queries the response was YES. [2024-06-28 01:57:10,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44305 conditions, 8752 events. 5629/8752 cut-off events. For 76074/76536 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 52930 event pairs, 1905 based on Foata normal form. 62/8439 useless extension candidates. Maximal degree in co-relation 44249. Up to 7670 conditions per place. [2024-06-28 01:57:10,384 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 191 selfloop transitions, 48 changer transitions 0/252 dead transitions. [2024-06-28 01:57:10,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 252 transitions, 2967 flow [2024-06-28 01:57:10,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:57:10,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-28 01:57:10,387 INFO L175 Difference]: Start difference. First operand has 116 places, 180 transitions, 2008 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:57:10,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 252 transitions, 2967 flow [2024-06-28 01:57:10,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 252 transitions, 2915 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:57:10,478 INFO L231 Difference]: Finished difference. Result has 123 places, 208 transitions, 2476 flow [2024-06-28 01:57:10,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2476, PETRI_PLACES=123, PETRI_TRANSITIONS=208} [2024-06-28 01:57:10,480 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-28 01:57:10,480 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 208 transitions, 2476 flow [2024-06-28 01:57:10,481 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 01:57:10,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:10,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:10,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:57:10,481 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:10,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:10,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2075066795, now seen corresponding path program 2 times [2024-06-28 01:57:10,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:10,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6611426] [2024-06-28 01:57:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:10,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:12,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:12,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6611426] [2024-06-28 01:57:12,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6611426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:12,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:12,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:12,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000514322] [2024-06-28 01:57:12,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:12,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:12,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:12,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:12,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:12,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:57:12,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 208 transitions, 2476 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:12,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:12,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:57:12,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:14,736 INFO L124 PetriNetUnfolderBase]: 5987/9235 cut-off events. [2024-06-28 01:57:14,736 INFO L125 PetriNetUnfolderBase]: For 81475/81512 co-relation queries the response was YES. [2024-06-28 01:57:14,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47561 conditions, 9235 events. 5987/9235 cut-off events. For 81475/81512 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 54133 event pairs, 2013 based on Foata normal form. 30/9027 useless extension candidates. Maximal degree in co-relation 47501. Up to 8187 conditions per place. [2024-06-28 01:57:14,804 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 227 selfloop transitions, 40 changer transitions 0/273 dead transitions. [2024-06-28 01:57:14,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 273 transitions, 3362 flow [2024-06-28 01:57:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:14,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:57:14,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:57:14,807 INFO L175 Difference]: Start difference. First operand has 123 places, 208 transitions, 2476 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:57:14,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 273 transitions, 3362 flow [2024-06-28 01:57:14,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 273 transitions, 3278 flow, removed 41 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:14,917 INFO L231 Difference]: Finished difference. Result has 130 places, 215 transitions, 2562 flow [2024-06-28 01:57:14,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2562, PETRI_PLACES=130, PETRI_TRANSITIONS=215} [2024-06-28 01:57:14,918 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-28 01:57:14,918 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 215 transitions, 2562 flow [2024-06-28 01:57:14,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:14,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:14,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:14,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:57:14,919 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:14,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:14,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1906126695, now seen corresponding path program 3 times [2024-06-28 01:57:14,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:14,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614747752] [2024-06-28 01:57:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:14,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:16,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614747752] [2024-06-28 01:57:16,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614747752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:16,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:16,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:16,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577168286] [2024-06-28 01:57:16,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:17,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:17,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:17,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:17,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:57:17,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 215 transitions, 2562 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:17,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:17,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:57:17,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:19,272 INFO L124 PetriNetUnfolderBase]: 5977/9224 cut-off events. [2024-06-28 01:57:19,272 INFO L125 PetriNetUnfolderBase]: For 84375/84412 co-relation queries the response was YES. [2024-06-28 01:57:19,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47779 conditions, 9224 events. 5977/9224 cut-off events. For 84375/84412 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 54098 event pairs, 2010 based on Foata normal form. 30/9015 useless extension candidates. Maximal degree in co-relation 47715. Up to 8179 conditions per place. [2024-06-28 01:57:19,343 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 229 selfloop transitions, 38 changer transitions 0/273 dead transitions. [2024-06-28 01:57:19,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 273 transitions, 3342 flow [2024-06-28 01:57:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:57:19,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:57:19,345 INFO L175 Difference]: Start difference. First operand has 130 places, 215 transitions, 2562 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:57:19,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 273 transitions, 3342 flow [2024-06-28 01:57:19,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 273 transitions, 3303 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:57:19,455 INFO L231 Difference]: Finished difference. Result has 135 places, 215 transitions, 2608 flow [2024-06-28 01:57:19,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2523, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2608, PETRI_PLACES=135, PETRI_TRANSITIONS=215} [2024-06-28 01:57:19,456 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 01:57:19,457 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 215 transitions, 2608 flow [2024-06-28 01:57:19,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:19,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:19,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:19,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:57:19,458 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:19,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash -871768357, now seen corresponding path program 4 times [2024-06-28 01:57:19,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:19,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394787903] [2024-06-28 01:57:19,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:19,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:21,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:21,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394787903] [2024-06-28 01:57:21,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394787903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:21,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:21,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:21,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541762199] [2024-06-28 01:57:21,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:21,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:21,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:21,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:21,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:21,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:21,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 215 transitions, 2608 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 01:57:21,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:21,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:21,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:23,663 INFO L124 PetriNetUnfolderBase]: 5737/8912 cut-off events. [2024-06-28 01:57:23,663 INFO L125 PetriNetUnfolderBase]: For 98209/98698 co-relation queries the response was YES. [2024-06-28 01:57:23,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48594 conditions, 8912 events. 5737/8912 cut-off events. For 98209/98698 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 53784 event pairs, 1907 based on Foata normal form. 82/8614 useless extension candidates. Maximal degree in co-relation 48528. Up to 7809 conditions per place. [2024-06-28 01:57:23,743 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 201 selfloop transitions, 46 changer transitions 0/263 dead transitions. [2024-06-28 01:57:23,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 263 transitions, 3388 flow [2024-06-28 01:57:23,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:23,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:23,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:57:23,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:57:23,745 INFO L175 Difference]: Start difference. First operand has 135 places, 215 transitions, 2608 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:57:23,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 263 transitions, 3388 flow [2024-06-28 01:57:23,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 263 transitions, 3313 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:23,894 INFO L231 Difference]: Finished difference. Result has 137 places, 219 transitions, 2709 flow [2024-06-28 01:57:23,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2709, PETRI_PLACES=137, PETRI_TRANSITIONS=219} [2024-06-28 01:57:23,894 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-28 01:57:23,895 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 219 transitions, 2709 flow [2024-06-28 01:57:23,895 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 01:57:23,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:23,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:23,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:57:23,895 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:23,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:23,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1905849865, now seen corresponding path program 1 times [2024-06-28 01:57:23,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:23,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712140084] [2024-06-28 01:57:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:26,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712140084] [2024-06-28 01:57:26,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712140084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:26,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:26,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:26,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893106757] [2024-06-28 01:57:26,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:26,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:26,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:57:26,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 219 transitions, 2709 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:26,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:26,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:57:26,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:28,504 INFO L124 PetriNetUnfolderBase]: 6027/9322 cut-off events. [2024-06-28 01:57:28,505 INFO L125 PetriNetUnfolderBase]: For 99310/99310 co-relation queries the response was YES. [2024-06-28 01:57:28,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49960 conditions, 9322 events. 6027/9322 cut-off events. For 99310/99310 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 55184 event pairs, 2034 based on Foata normal form. 4/9079 useless extension candidates. Maximal degree in co-relation 49893. Up to 8447 conditions per place. [2024-06-28 01:57:28,591 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 246 selfloop transitions, 19 changer transitions 0/271 dead transitions. [2024-06-28 01:57:28,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 271 transitions, 3453 flow [2024-06-28 01:57:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:57:28,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:57:28,594 INFO L175 Difference]: Start difference. First operand has 137 places, 219 transitions, 2709 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:57:28,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 271 transitions, 3453 flow [2024-06-28 01:57:28,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 271 transitions, 3312 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:28,743 INFO L231 Difference]: Finished difference. Result has 140 places, 221 transitions, 2638 flow [2024-06-28 01:57:28,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2638, PETRI_PLACES=140, PETRI_TRANSITIONS=221} [2024-06-28 01:57:28,744 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-28 01:57:28,744 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 221 transitions, 2638 flow [2024-06-28 01:57:28,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:28,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:28,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:28,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:57:28,744 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:28,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:28,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1431312350, now seen corresponding path program 1 times [2024-06-28 01:57:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:28,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782656202] [2024-06-28 01:57:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:28,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:30,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:30,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782656202] [2024-06-28 01:57:30,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782656202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:30,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:30,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:30,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795708836] [2024-06-28 01:57:30,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:30,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:30,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:30,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:30,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:30,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 221 transitions, 2638 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 01:57:30,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:30,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:30,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:33,068 INFO L124 PetriNetUnfolderBase]: 5985/9276 cut-off events. [2024-06-28 01:57:33,069 INFO L125 PetriNetUnfolderBase]: For 119152/119658 co-relation queries the response was YES. [2024-06-28 01:57:33,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52598 conditions, 9276 events. 5985/9276 cut-off events. For 119152/119658 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 56479 event pairs, 1689 based on Foata normal form. 182/9060 useless extension candidates. Maximal degree in co-relation 52530. Up to 7267 conditions per place. [2024-06-28 01:57:33,145 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 180 selfloop transitions, 117 changer transitions 0/314 dead transitions. [2024-06-28 01:57:33,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 314 transitions, 3938 flow [2024-06-28 01:57:33,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-28 01:57:33,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755208333333334 [2024-06-28 01:57:33,149 INFO L175 Difference]: Start difference. First operand has 140 places, 221 transitions, 2638 flow. Second operand 8 states and 221 transitions. [2024-06-28 01:57:33,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 314 transitions, 3938 flow [2024-06-28 01:57:33,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 314 transitions, 3901 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:33,301 INFO L231 Difference]: Finished difference. Result has 145 places, 235 transitions, 3149 flow [2024-06-28 01:57:33,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2601, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3149, PETRI_PLACES=145, PETRI_TRANSITIONS=235} [2024-06-28 01:57:33,301 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 91 predicate places. [2024-06-28 01:57:33,302 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 235 transitions, 3149 flow [2024-06-28 01:57:33,302 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 01:57:33,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:33,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:33,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:57:33,302 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:33,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:33,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1075397470, now seen corresponding path program 2 times [2024-06-28 01:57:33,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:33,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761534161] [2024-06-28 01:57:33,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:33,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:35,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:35,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761534161] [2024-06-28 01:57:35,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761534161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:35,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:35,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:57:35,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8851048] [2024-06-28 01:57:35,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:35,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:57:35,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:35,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:57:35,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:57:35,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:35,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 235 transitions, 3149 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:35,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:35,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:35,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:37,781 INFO L124 PetriNetUnfolderBase]: 6035/9388 cut-off events. [2024-06-28 01:57:37,782 INFO L125 PetriNetUnfolderBase]: For 141003/141612 co-relation queries the response was YES. [2024-06-28 01:57:37,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56524 conditions, 9388 events. 6035/9388 cut-off events. For 141003/141612 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 57480 event pairs, 1729 based on Foata normal form. 212/9192 useless extension candidates. Maximal degree in co-relation 56453. Up to 8069 conditions per place. [2024-06-28 01:57:37,886 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 221 selfloop transitions, 54 changer transitions 0/292 dead transitions. [2024-06-28 01:57:37,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 292 transitions, 4006 flow [2024-06-28 01:57:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:57:37,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:57:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:57:37,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-28 01:57:37,890 INFO L175 Difference]: Start difference. First operand has 145 places, 235 transitions, 3149 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:57:37,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 292 transitions, 4006 flow [2024-06-28 01:57:38,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 292 transitions, 3800 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:38,158 INFO L231 Difference]: Finished difference. Result has 148 places, 239 transitions, 3154 flow [2024-06-28 01:57:38,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3154, PETRI_PLACES=148, PETRI_TRANSITIONS=239} [2024-06-28 01:57:38,159 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-28 01:57:38,159 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 239 transitions, 3154 flow [2024-06-28 01:57:38,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:38,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:38,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:38,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:57:38,160 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:38,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1431221985, now seen corresponding path program 1 times [2024-06-28 01:57:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:38,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423794399] [2024-06-28 01:57:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:40,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:40,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423794399] [2024-06-28 01:57:40,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423794399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:40,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:40,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:40,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873660154] [2024-06-28 01:57:40,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:40,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:40,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:40,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:40,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:40,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:57:40,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 239 transitions, 3154 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:40,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:40,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:57:40,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:42,910 INFO L124 PetriNetUnfolderBase]: 6455/9956 cut-off events. [2024-06-28 01:57:42,910 INFO L125 PetriNetUnfolderBase]: For 131960/131974 co-relation queries the response was YES. [2024-06-28 01:57:42,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57942 conditions, 9956 events. 6455/9956 cut-off events. For 131960/131974 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 59618 event pairs, 1957 based on Foata normal form. 18/9710 useless extension candidates. Maximal degree in co-relation 57870. Up to 8954 conditions per place. [2024-06-28 01:57:43,012 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 287 selfloop transitions, 34 changer transitions 0/327 dead transitions. [2024-06-28 01:57:43,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 327 transitions, 4326 flow [2024-06-28 01:57:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:43,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:57:43,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:57:43,015 INFO L175 Difference]: Start difference. First operand has 148 places, 239 transitions, 3154 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:57:43,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 327 transitions, 4326 flow [2024-06-28 01:57:43,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 327 transitions, 4183 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:57:43,263 INFO L231 Difference]: Finished difference. Result has 155 places, 265 transitions, 3498 flow [2024-06-28 01:57:43,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3039, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3498, PETRI_PLACES=155, PETRI_TRANSITIONS=265} [2024-06-28 01:57:43,263 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 101 predicate places. [2024-06-28 01:57:43,263 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 265 transitions, 3498 flow [2024-06-28 01:57:43,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:43,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:43,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:43,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:57:43,264 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:43,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:43,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1427503070, now seen corresponding path program 3 times [2024-06-28 01:57:43,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:43,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122752671] [2024-06-28 01:57:43,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:43,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:45,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:45,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122752671] [2024-06-28 01:57:45,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122752671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:45,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:45,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:45,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443675255] [2024-06-28 01:57:45,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:45,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:45,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:45,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:57:45,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 265 transitions, 3498 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 01:57:45,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:45,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:57:45,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:47,810 INFO L124 PetriNetUnfolderBase]: 6395/9878 cut-off events. [2024-06-28 01:57:47,810 INFO L125 PetriNetUnfolderBase]: For 165201/165849 co-relation queries the response was YES. [2024-06-28 01:57:47,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61755 conditions, 9878 events. 6395/9878 cut-off events. For 165201/165849 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 60209 event pairs, 1858 based on Foata normal form. 122/9534 useless extension candidates. Maximal degree in co-relation 61678. Up to 8269 conditions per place. [2024-06-28 01:57:47,901 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 236 selfloop transitions, 89 changer transitions 0/347 dead transitions. [2024-06-28 01:57:47,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 347 transitions, 4714 flow [2024-06-28 01:57:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:47,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:57:47,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-28 01:57:47,903 INFO L175 Difference]: Start difference. First operand has 155 places, 265 transitions, 3498 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:57:47,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 347 transitions, 4714 flow [2024-06-28 01:57:48,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 347 transitions, 4670 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:48,164 INFO L231 Difference]: Finished difference. Result has 163 places, 279 transitions, 3896 flow [2024-06-28 01:57:48,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3454, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3896, PETRI_PLACES=163, PETRI_TRANSITIONS=279} [2024-06-28 01:57:48,165 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2024-06-28 01:57:48,165 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 279 transitions, 3896 flow [2024-06-28 01:57:48,165 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 01:57:48,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:48,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:48,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:57:48,166 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:48,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:48,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1071678245, now seen corresponding path program 2 times [2024-06-28 01:57:48,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:48,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914821537] [2024-06-28 01:57:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:48,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:50,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:50,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914821537] [2024-06-28 01:57:50,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914821537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:50,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:50,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:50,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219785560] [2024-06-28 01:57:50,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:50,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:50,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:50,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:50,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:50,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:57:50,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 279 transitions, 3896 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:50,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:50,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:57:50,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:52,836 INFO L124 PetriNetUnfolderBase]: 6839/10510 cut-off events. [2024-06-28 01:57:52,837 INFO L125 PetriNetUnfolderBase]: For 158592/158626 co-relation queries the response was YES. [2024-06-28 01:57:52,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64246 conditions, 10510 events. 6839/10510 cut-off events. For 158592/158626 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 62566 event pairs, 2025 based on Foata normal form. 27/10265 useless extension candidates. Maximal degree in co-relation 64165. Up to 9364 conditions per place. [2024-06-28 01:57:52,929 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 318 selfloop transitions, 56 changer transitions 0/380 dead transitions. [2024-06-28 01:57:52,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 380 transitions, 5418 flow [2024-06-28 01:57:52,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:57:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:57:52,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 01:57:52,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-28 01:57:52,931 INFO L175 Difference]: Start difference. First operand has 163 places, 279 transitions, 3896 flow. Second operand 9 states and 201 transitions. [2024-06-28 01:57:52,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 380 transitions, 5418 flow [2024-06-28 01:57:53,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 380 transitions, 5215 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 01:57:53,307 INFO L231 Difference]: Finished difference. Result has 173 places, 321 transitions, 4396 flow [2024-06-28 01:57:53,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4396, PETRI_PLACES=173, PETRI_TRANSITIONS=321} [2024-06-28 01:57:53,308 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2024-06-28 01:57:53,308 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 321 transitions, 4396 flow [2024-06-28 01:57:53,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:53,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:53,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:53,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:57:53,309 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:53,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1427497335, now seen corresponding path program 3 times [2024-06-28 01:57:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:53,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691038526] [2024-06-28 01:57:53,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:53,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:57:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:57:55,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:57:55,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691038526] [2024-06-28 01:57:55,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691038526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:57:55,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:57:55,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:57:55,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429165509] [2024-06-28 01:57:55,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:57:55,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:57:55,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:57:55,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:57:55,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:57:55,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:57:55,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 321 transitions, 4396 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:55,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:57:55,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:57:55,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:57:58,127 INFO L124 PetriNetUnfolderBase]: 6891/10587 cut-off events. [2024-06-28 01:57:58,127 INFO L125 PetriNetUnfolderBase]: For 172086/172108 co-relation queries the response was YES. [2024-06-28 01:57:58,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67558 conditions, 10587 events. 6891/10587 cut-off events. For 172086/172108 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 63155 event pairs, 2011 based on Foata normal form. 30/10344 useless extension candidates. Maximal degree in co-relation 67471. Up to 9465 conditions per place. [2024-06-28 01:57:58,228 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 317 selfloop transitions, 55 changer transitions 0/378 dead transitions. [2024-06-28 01:57:58,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 378 transitions, 5380 flow [2024-06-28 01:57:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:57:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:57:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:57:58,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:57:58,230 INFO L175 Difference]: Start difference. First operand has 173 places, 321 transitions, 4396 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:57:58,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 378 transitions, 5380 flow [2024-06-28 01:57:58,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 378 transitions, 5312 flow, removed 33 selfloop flow, removed 1 redundant places. [2024-06-28 01:57:58,594 INFO L231 Difference]: Finished difference. Result has 180 places, 327 transitions, 4525 flow [2024-06-28 01:57:58,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4525, PETRI_PLACES=180, PETRI_TRANSITIONS=327} [2024-06-28 01:57:58,595 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2024-06-28 01:57:58,595 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 327 transitions, 4525 flow [2024-06-28 01:57:58,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:57:58,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:57:58,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:57:58,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:57:58,596 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:57:58,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:57:58,596 INFO L85 PathProgramCache]: Analyzing trace with hash 97440875, now seen corresponding path program 4 times [2024-06-28 01:57:58,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:57:58,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056548770] [2024-06-28 01:57:58,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:57:58,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:57:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:00,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:00,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056548770] [2024-06-28 01:58:00,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056548770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:00,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:00,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:00,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322661924] [2024-06-28 01:58:00,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:00,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:00,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:00,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:00,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:58:00,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 327 transitions, 4525 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:00,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:00,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:58:00,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:03,546 INFO L124 PetriNetUnfolderBase]: 6953/10679 cut-off events. [2024-06-28 01:58:03,546 INFO L125 PetriNetUnfolderBase]: For 182189/182239 co-relation queries the response was YES. [2024-06-28 01:58:03,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69334 conditions, 10679 events. 6953/10679 cut-off events. For 182189/182239 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 63612 event pairs, 2012 based on Foata normal form. 40/10442 useless extension candidates. Maximal degree in co-relation 69244. Up to 9594 conditions per place. [2024-06-28 01:58:03,669 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 320 selfloop transitions, 54 changer transitions 0/380 dead transitions. [2024-06-28 01:58:03,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 380 transitions, 5502 flow [2024-06-28 01:58:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:03,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:03,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 01:58:03,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-06-28 01:58:03,670 INFO L175 Difference]: Start difference. First operand has 180 places, 327 transitions, 4525 flow. Second operand 8 states and 179 transitions. [2024-06-28 01:58:03,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 380 transitions, 5502 flow [2024-06-28 01:58:04,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 380 transitions, 5385 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:04,074 INFO L231 Difference]: Finished difference. Result has 185 places, 332 transitions, 4594 flow [2024-06-28 01:58:04,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4412, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4594, PETRI_PLACES=185, PETRI_TRANSITIONS=332} [2024-06-28 01:58:04,074 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 131 predicate places. [2024-06-28 01:58:04,074 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 332 transitions, 4594 flow [2024-06-28 01:58:04,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:04,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:04,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:04,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:58:04,075 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:04,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:04,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1039611099, now seen corresponding path program 5 times [2024-06-28 01:58:04,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:04,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583425236] [2024-06-28 01:58:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:04,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:06,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:06,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583425236] [2024-06-28 01:58:06,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583425236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:06,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:06,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:06,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330545172] [2024-06-28 01:58:06,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:06,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:06,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:06,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:06,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:06,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:58:06,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 332 transitions, 4594 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:06,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:06,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:58:06,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:08,925 INFO L124 PetriNetUnfolderBase]: 7087/10871 cut-off events. [2024-06-28 01:58:08,925 INFO L125 PetriNetUnfolderBase]: For 196475/196525 co-relation queries the response was YES. [2024-06-28 01:58:08,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71779 conditions, 10871 events. 7087/10871 cut-off events. For 196475/196525 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 64734 event pairs, 2007 based on Foata normal form. 40/10632 useless extension candidates. Maximal degree in co-relation 71687. Up to 9665 conditions per place. [2024-06-28 01:58:09,047 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 328 selfloop transitions, 60 changer transitions 0/394 dead transitions. [2024-06-28 01:58:09,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 394 transitions, 5801 flow [2024-06-28 01:58:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:58:09,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 01:58:09,049 INFO L175 Difference]: Start difference. First operand has 185 places, 332 transitions, 4594 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:58:09,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 394 transitions, 5801 flow [2024-06-28 01:58:09,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 394 transitions, 5683 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:09,504 INFO L231 Difference]: Finished difference. Result has 191 places, 340 transitions, 4747 flow [2024-06-28 01:58:09,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4476, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4747, PETRI_PLACES=191, PETRI_TRANSITIONS=340} [2024-06-28 01:58:09,505 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 137 predicate places. [2024-06-28 01:58:09,505 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 340 transitions, 4747 flow [2024-06-28 01:58:09,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:09,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:09,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:09,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:58:09,506 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:09,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:09,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1039616679, now seen corresponding path program 6 times [2024-06-28 01:58:09,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:09,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079390304] [2024-06-28 01:58:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:09,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:11,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:11,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079390304] [2024-06-28 01:58:11,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079390304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:11,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:11,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:11,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262217530] [2024-06-28 01:58:11,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:11,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:11,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:11,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:11,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:11,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:58:11,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 340 transitions, 4747 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:11,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:11,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:58:11,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:14,393 INFO L124 PetriNetUnfolderBase]: 7108/10906 cut-off events. [2024-06-28 01:58:14,394 INFO L125 PetriNetUnfolderBase]: For 208734/208784 co-relation queries the response was YES. [2024-06-28 01:58:14,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73148 conditions, 10906 events. 7108/10906 cut-off events. For 208734/208784 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 65061 event pairs, 1997 based on Foata normal form. 42/10667 useless extension candidates. Maximal degree in co-relation 73054. Up to 9703 conditions per place. [2024-06-28 01:58:14,751 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 335 selfloop transitions, 66 changer transitions 0/407 dead transitions. [2024-06-28 01:58:14,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 407 transitions, 5936 flow [2024-06-28 01:58:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 01:58:14,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-28 01:58:14,753 INFO L175 Difference]: Start difference. First operand has 191 places, 340 transitions, 4747 flow. Second operand 8 states and 183 transitions. [2024-06-28 01:58:14,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 407 transitions, 5936 flow [2024-06-28 01:58:15,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 407 transitions, 5828 flow, removed 45 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:15,161 INFO L231 Difference]: Finished difference. Result has 200 places, 360 transitions, 5106 flow [2024-06-28 01:58:15,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4649, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5106, PETRI_PLACES=200, PETRI_TRANSITIONS=360} [2024-06-28 01:58:15,161 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-28 01:58:15,161 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 360 transitions, 5106 flow [2024-06-28 01:58:15,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:15,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:15,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:15,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:58:15,162 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:15,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:15,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1255013180, now seen corresponding path program 4 times [2024-06-28 01:58:15,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:15,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245193422] [2024-06-28 01:58:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:15,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:17,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:17,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245193422] [2024-06-28 01:58:17,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245193422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:17,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:17,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:17,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42840339] [2024-06-28 01:58:17,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:17,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:17,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:17,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:17,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:17,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:17,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 360 transitions, 5106 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 01:58:17,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:17,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:17,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:20,245 INFO L124 PetriNetUnfolderBase]: 6823/10583 cut-off events. [2024-06-28 01:58:20,245 INFO L125 PetriNetUnfolderBase]: For 236628/237332 co-relation queries the response was YES. [2024-06-28 01:58:20,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74430 conditions, 10583 events. 6823/10583 cut-off events. For 236628/237332 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 64845 event pairs, 1760 based on Foata normal form. 64/10206 useless extension candidates. Maximal degree in co-relation 74331. Up to 9104 conditions per place. [2024-06-28 01:58:20,368 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 309 selfloop transitions, 65 changer transitions 0/419 dead transitions. [2024-06-28 01:58:20,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 419 transitions, 6256 flow [2024-06-28 01:58:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:58:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:58:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:58:20,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 01:58:20,369 INFO L175 Difference]: Start difference. First operand has 200 places, 360 transitions, 5106 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:58:20,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 419 transitions, 6256 flow [2024-06-28 01:58:20,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 419 transitions, 6146 flow, removed 46 selfloop flow, removed 2 redundant places. [2024-06-28 01:58:20,883 INFO L231 Difference]: Finished difference. Result has 206 places, 365 transitions, 5229 flow [2024-06-28 01:58:20,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4996, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5229, PETRI_PLACES=206, PETRI_TRANSITIONS=365} [2024-06-28 01:58:20,894 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 152 predicate places. [2024-06-28 01:58:20,894 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 365 transitions, 5229 flow [2024-06-28 01:58:20,895 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 01:58:20,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:20,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:20,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:58:20,895 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:20,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:20,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1352700531, now seen corresponding path program 7 times [2024-06-28 01:58:20,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:20,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038282742] [2024-06-28 01:58:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:20,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:22,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:22,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038282742] [2024-06-28 01:58:22,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038282742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:22,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:22,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:58:22,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374639887] [2024-06-28 01:58:22,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:22,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:58:22,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:22,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:58:22,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:58:22,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:58:22,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 365 transitions, 5229 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:22,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:22,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:58:22,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:26,259 INFO L124 PetriNetUnfolderBase]: 8502/12964 cut-off events. [2024-06-28 01:58:26,259 INFO L125 PetriNetUnfolderBase]: For 286719/286741 co-relation queries the response was YES. [2024-06-28 01:58:26,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92229 conditions, 12964 events. 8502/12964 cut-off events. For 286719/286741 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 78590 event pairs, 1890 based on Foata normal form. 24/12671 useless extension candidates. Maximal degree in co-relation 92128. Up to 9849 conditions per place. [2024-06-28 01:58:26,411 INFO L140 encePairwiseOnDemand]: 29/48 looper letters, 404 selfloop transitions, 221 changer transitions 0/631 dead transitions. [2024-06-28 01:58:26,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 631 transitions, 9539 flow [2024-06-28 01:58:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:58:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:58:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-06-28 01:58:26,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-28 01:58:26,417 INFO L175 Difference]: Start difference. First operand has 206 places, 365 transitions, 5229 flow. Second operand 10 states and 265 transitions. [2024-06-28 01:58:26,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 631 transitions, 9539 flow [2024-06-28 01:58:27,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 631 transitions, 9326 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:58:27,090 INFO L231 Difference]: Finished difference. Result has 214 places, 500 transitions, 7804 flow [2024-06-28 01:58:27,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5042, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7804, PETRI_PLACES=214, PETRI_TRANSITIONS=500} [2024-06-28 01:58:27,092 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 160 predicate places. [2024-06-28 01:58:27,092 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 500 transitions, 7804 flow [2024-06-28 01:58:27,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:27,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:27,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:27,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:58:27,093 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:27,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:27,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1421068198, now seen corresponding path program 1 times [2024-06-28 01:58:27,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:27,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604594914] [2024-06-28 01:58:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:27,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604594914] [2024-06-28 01:58:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604594914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:29,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:29,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:29,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619253173] [2024-06-28 01:58:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:29,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:29,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:29,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:29,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:29,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:29,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 500 transitions, 7804 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 01:58:29,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:29,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:29,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:32,928 INFO L124 PetriNetUnfolderBase]: 8700/13513 cut-off events. [2024-06-28 01:58:32,928 INFO L125 PetriNetUnfolderBase]: For 362829/363672 co-relation queries the response was YES. [2024-06-28 01:58:33,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104350 conditions, 13513 events. 8700/13513 cut-off events. For 362829/363672 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 85990 event pairs, 1432 based on Foata normal form. 104/13113 useless extension candidates. Maximal degree in co-relation 104244. Up to 9458 conditions per place. [2024-06-28 01:58:33,104 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 324 selfloop transitions, 204 changer transitions 0/608 dead transitions. [2024-06-28 01:58:33,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 608 transitions, 9900 flow [2024-06-28 01:58:33,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:33,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:33,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 253 transitions. [2024-06-28 01:58:33,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5856481481481481 [2024-06-28 01:58:33,111 INFO L175 Difference]: Start difference. First operand has 214 places, 500 transitions, 7804 flow. Second operand 9 states and 253 transitions. [2024-06-28 01:58:33,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 608 transitions, 9900 flow [2024-06-28 01:58:33,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 608 transitions, 9648 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:33,998 INFO L231 Difference]: Finished difference. Result has 221 places, 505 transitions, 8117 flow [2024-06-28 01:58:33,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7566, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8117, PETRI_PLACES=221, PETRI_TRANSITIONS=505} [2024-06-28 01:58:33,999 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-28 01:58:33,999 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 505 transitions, 8117 flow [2024-06-28 01:58:33,999 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 01:58:34,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:34,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:34,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:58:34,000 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:34,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:34,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1421007748, now seen corresponding path program 2 times [2024-06-28 01:58:34,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:34,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059862350] [2024-06-28 01:58:34,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:34,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:36,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:36,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:36,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059862350] [2024-06-28 01:58:36,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059862350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:36,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:36,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:36,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361574179] [2024-06-28 01:58:36,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:36,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:36,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:36,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:36,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:37,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:58:37,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 505 transitions, 8117 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 01:58:37,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:37,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:58:37,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:41,433 INFO L124 PetriNetUnfolderBase]: 8997/14047 cut-off events. [2024-06-28 01:58:41,433 INFO L125 PetriNetUnfolderBase]: For 386901/387718 co-relation queries the response was YES. [2024-06-28 01:58:41,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108796 conditions, 14047 events. 8997/14047 cut-off events. For 386901/387718 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 90785 event pairs, 1946 based on Foata normal form. 137/13644 useless extension candidates. Maximal degree in co-relation 108688. Up to 11746 conditions per place. [2024-06-28 01:58:41,589 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 438 selfloop transitions, 81 changer transitions 0/599 dead transitions. [2024-06-28 01:58:41,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 599 transitions, 9821 flow [2024-06-28 01:58:41,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 01:58:41,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-06-28 01:58:41,591 INFO L175 Difference]: Start difference. First operand has 221 places, 505 transitions, 8117 flow. Second operand 9 states and 236 transitions. [2024-06-28 01:58:41,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 599 transitions, 9821 flow [2024-06-28 01:58:42,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 599 transitions, 9518 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:42,629 INFO L231 Difference]: Finished difference. Result has 227 places, 515 transitions, 8209 flow [2024-06-28 01:58:42,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7823, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8209, PETRI_PLACES=227, PETRI_TRANSITIONS=515} [2024-06-28 01:58:42,630 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 173 predicate places. [2024-06-28 01:58:42,630 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 515 transitions, 8209 flow [2024-06-28 01:58:42,630 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 01:58:42,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:42,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:42,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:58:42,631 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:42,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:42,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1019622554, now seen corresponding path program 1 times [2024-06-28 01:58:42,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:42,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270382584] [2024-06-28 01:58:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:42,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:45,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:45,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:45,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270382584] [2024-06-28 01:58:45,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270382584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:45,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:45,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:45,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705272848] [2024-06-28 01:58:45,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:45,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:45,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:45,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:45,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:46,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:58:46,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 515 transitions, 8209 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:46,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:46,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:58:46,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:49,904 INFO L124 PetriNetUnfolderBase]: 9613/14774 cut-off events. [2024-06-28 01:58:49,904 INFO L125 PetriNetUnfolderBase]: For 378156/378196 co-relation queries the response was YES. [2024-06-28 01:58:50,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112887 conditions, 14774 events. 9613/14774 cut-off events. For 378156/378196 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 92929 event pairs, 2065 based on Foata normal form. 44/14436 useless extension candidates. Maximal degree in co-relation 112775. Up to 12222 conditions per place. [2024-06-28 01:58:50,094 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 468 selfloop transitions, 156 changer transitions 0/630 dead transitions. [2024-06-28 01:58:50,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 630 transitions, 10367 flow [2024-06-28 01:58:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:50,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:50,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 01:58:50,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300925925925926 [2024-06-28 01:58:50,115 INFO L175 Difference]: Start difference. First operand has 227 places, 515 transitions, 8209 flow. Second operand 9 states and 229 transitions. [2024-06-28 01:58:50,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 630 transitions, 10367 flow [2024-06-28 01:58:51,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 630 transitions, 10180 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 01:58:51,309 INFO L231 Difference]: Finished difference. Result has 234 places, 535 transitions, 8796 flow [2024-06-28 01:58:51,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8035, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8796, PETRI_PLACES=234, PETRI_TRANSITIONS=535} [2024-06-28 01:58:51,311 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 180 predicate places. [2024-06-28 01:58:51,311 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 535 transitions, 8796 flow [2024-06-28 01:58:51,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:51,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:51,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:51,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:58:51,312 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:51,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:51,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1022423714, now seen corresponding path program 2 times [2024-06-28 01:58:51,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:51,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218357789] [2024-06-28 01:58:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:51,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:58:54,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:58:54,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:58:54,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218357789] [2024-06-28 01:58:54,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218357789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:58:54,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:58:54,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:58:54,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225307658] [2024-06-28 01:58:54,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:58:54,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:58:54,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:58:54,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:58:54,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:58:54,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:58:54,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 535 transitions, 8796 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:54,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:58:54,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:58:54,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:58:58,602 INFO L124 PetriNetUnfolderBase]: 9675/14872 cut-off events. [2024-06-28 01:58:58,602 INFO L125 PetriNetUnfolderBase]: For 391711/391745 co-relation queries the response was YES. [2024-06-28 01:58:58,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116350 conditions, 14872 events. 9675/14872 cut-off events. For 391711/391745 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 93481 event pairs, 2225 based on Foata normal form. 38/14523 useless extension candidates. Maximal degree in co-relation 116234. Up to 13421 conditions per place. [2024-06-28 01:58:58,769 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 555 selfloop transitions, 49 changer transitions 0/610 dead transitions. [2024-06-28 01:58:58,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 610 transitions, 10385 flow [2024-06-28 01:58:58,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:58:58,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:58:58,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 01:58:58,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:58:58,771 INFO L175 Difference]: Start difference. First operand has 234 places, 535 transitions, 8796 flow. Second operand 9 states and 212 transitions. [2024-06-28 01:58:58,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 610 transitions, 10385 flow [2024-06-28 01:58:59,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 610 transitions, 10254 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 01:58:59,941 INFO L231 Difference]: Finished difference. Result has 240 places, 538 transitions, 8829 flow [2024-06-28 01:58:59,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8665, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8829, PETRI_PLACES=240, PETRI_TRANSITIONS=538} [2024-06-28 01:58:59,944 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 186 predicate places. [2024-06-28 01:58:59,944 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 538 transitions, 8829 flow [2024-06-28 01:58:59,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:58:59,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:58:59,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:58:59,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:58:59,944 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:58:59,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:58:59,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1022418940, now seen corresponding path program 3 times [2024-06-28 01:58:59,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:58:59,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757054924] [2024-06-28 01:58:59,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:58:59,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:58:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:03,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:03,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757054924] [2024-06-28 01:59:03,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757054924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:03,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:03,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:03,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400430175] [2024-06-28 01:59:03,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:03,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:03,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:03,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:03,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:03,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 01:59:03,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 538 transitions, 8829 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 01:59:03,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:03,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 01:59:03,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:07,934 INFO L124 PetriNetUnfolderBase]: 9556/14829 cut-off events. [2024-06-28 01:59:07,935 INFO L125 PetriNetUnfolderBase]: For 438742/439709 co-relation queries the response was YES. [2024-06-28 01:59:08,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118737 conditions, 14829 events. 9556/14829 cut-off events. For 438742/439709 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 95732 event pairs, 2067 based on Foata normal form. 100/14347 useless extension candidates. Maximal degree in co-relation 118619. Up to 12407 conditions per place. [2024-06-28 01:59:08,147 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 444 selfloop transitions, 84 changer transitions 0/614 dead transitions. [2024-06-28 01:59:08,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 614 transitions, 10454 flow [2024-06-28 01:59:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:08,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:59:08,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:59:08,149 INFO L175 Difference]: Start difference. First operand has 240 places, 538 transitions, 8829 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:59:08,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 614 transitions, 10454 flow [2024-06-28 01:59:09,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 614 transitions, 10322 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:09,474 INFO L231 Difference]: Finished difference. Result has 243 places, 546 transitions, 9068 flow [2024-06-28 01:59:09,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8697, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9068, PETRI_PLACES=243, PETRI_TRANSITIONS=546} [2024-06-28 01:59:09,475 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 189 predicate places. [2024-06-28 01:59:09,475 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 546 transitions, 9068 flow [2024-06-28 01:59:09,475 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 01:59:09,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:09,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:09,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:59:09,476 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:09,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:09,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1022419064, now seen corresponding path program 3 times [2024-06-28 01:59:09,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:09,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543793814] [2024-06-28 01:59:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:09,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:09,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:13,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:13,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:13,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543793814] [2024-06-28 01:59:13,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543793814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:13,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:13,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:13,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539733604] [2024-06-28 01:59:13,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:13,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:13,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:13,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:13,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:13,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:59:13,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 546 transitions, 9068 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:13,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:13,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:59:13,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:17,390 INFO L124 PetriNetUnfolderBase]: 9995/15358 cut-off events. [2024-06-28 01:59:17,390 INFO L125 PetriNetUnfolderBase]: For 430608/430642 co-relation queries the response was YES. [2024-06-28 01:59:17,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122340 conditions, 15358 events. 9995/15358 cut-off events. For 430608/430642 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 97101 event pairs, 2271 based on Foata normal form. 38/15002 useless extension candidates. Maximal degree in co-relation 122219. Up to 13812 conditions per place. [2024-06-28 01:59:17,630 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 577 selfloop transitions, 53 changer transitions 0/636 dead transitions. [2024-06-28 01:59:17,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 636 transitions, 10900 flow [2024-06-28 01:59:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:59:17,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:59:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 01:59:17,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-28 01:59:17,631 INFO L175 Difference]: Start difference. First operand has 243 places, 546 transitions, 9068 flow. Second operand 9 states and 215 transitions. [2024-06-28 01:59:17,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 636 transitions, 10900 flow [2024-06-28 01:59:19,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 636 transitions, 10736 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-28 01:59:19,328 INFO L231 Difference]: Finished difference. Result has 251 places, 563 transitions, 9303 flow [2024-06-28 01:59:19,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8926, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9303, PETRI_PLACES=251, PETRI_TRANSITIONS=563} [2024-06-28 01:59:19,329 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 197 predicate places. [2024-06-28 01:59:19,329 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 563 transitions, 9303 flow [2024-06-28 01:59:19,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:19,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:19,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:19,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:59:19,330 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:19,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:19,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1137894560, now seen corresponding path program 1 times [2024-06-28 01:59:19,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:19,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254815742] [2024-06-28 01:59:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:19,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:22,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:22,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254815742] [2024-06-28 01:59:22,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254815742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:22,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:22,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:22,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823005680] [2024-06-28 01:59:22,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:22,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:22,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:22,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:22,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:22,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:59:22,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 563 transitions, 9303 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:22,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:22,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:59:22,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:26,433 INFO L124 PetriNetUnfolderBase]: 10029/15361 cut-off events. [2024-06-28 01:59:26,433 INFO L125 PetriNetUnfolderBase]: For 445909/445947 co-relation queries the response was YES. [2024-06-28 01:59:26,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123989 conditions, 15361 events. 10029/15361 cut-off events. For 445909/445947 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 96605 event pairs, 2353 based on Foata normal form. 40/15021 useless extension candidates. Maximal degree in co-relation 123863. Up to 13622 conditions per place. [2024-06-28 01:59:26,691 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 514 selfloop transitions, 109 changer transitions 0/629 dead transitions. [2024-06-28 01:59:26,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 629 transitions, 11010 flow [2024-06-28 01:59:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:26,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:59:26,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-28 01:59:26,693 INFO L175 Difference]: Start difference. First operand has 251 places, 563 transitions, 9303 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:59:26,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 629 transitions, 11010 flow [2024-06-28 01:59:28,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 629 transitions, 10797 flow, removed 86 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:28,697 INFO L231 Difference]: Finished difference. Result has 255 places, 573 transitions, 9572 flow [2024-06-28 01:59:28,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9110, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9572, PETRI_PLACES=255, PETRI_TRANSITIONS=573} [2024-06-28 01:59:28,698 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 201 predicate places. [2024-06-28 01:59:28,699 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 573 transitions, 9572 flow [2024-06-28 01:59:28,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:28,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:28,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:28,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:59:28,699 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:28,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:28,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1137894808, now seen corresponding path program 1 times [2024-06-28 01:59:28,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:28,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688913844] [2024-06-28 01:59:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:28,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:31,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:31,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:31,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688913844] [2024-06-28 01:59:31,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688913844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:31,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:31,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:31,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999340291] [2024-06-28 01:59:31,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:31,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:31,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:31,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:31,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:31,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:59:31,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 573 transitions, 9572 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:31,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:31,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:59:31,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:36,241 INFO L124 PetriNetUnfolderBase]: 10079/15531 cut-off events. [2024-06-28 01:59:36,242 INFO L125 PetriNetUnfolderBase]: For 470718/470756 co-relation queries the response was YES. [2024-06-28 01:59:36,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126219 conditions, 15531 events. 10079/15531 cut-off events. For 470718/470756 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 98810 event pairs, 2317 based on Foata normal form. 40/15159 useless extension candidates. Maximal degree in co-relation 126091. Up to 13662 conditions per place. [2024-06-28 01:59:36,448 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 512 selfloop transitions, 124 changer transitions 0/642 dead transitions. [2024-06-28 01:59:36,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 642 transitions, 11251 flow [2024-06-28 01:59:36,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:59:36,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:59:36,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:59:36,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-28 01:59:36,450 INFO L175 Difference]: Start difference. First operand has 255 places, 573 transitions, 9572 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:59:36,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 642 transitions, 11251 flow [2024-06-28 01:59:38,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 642 transitions, 10998 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:38,068 INFO L231 Difference]: Finished difference. Result has 259 places, 575 transitions, 9618 flow [2024-06-28 01:59:38,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9319, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9618, PETRI_PLACES=259, PETRI_TRANSITIONS=575} [2024-06-28 01:59:38,069 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 205 predicate places. [2024-06-28 01:59:38,069 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 575 transitions, 9618 flow [2024-06-28 01:59:38,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:38,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:38,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:38,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:59:38,070 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:38,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1302919944, now seen corresponding path program 4 times [2024-06-28 01:59:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:38,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678095875] [2024-06-28 01:59:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:38,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:40,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:40,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:40,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678095875] [2024-06-28 01:59:40,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678095875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:40,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:40,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:40,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067135478] [2024-06-28 01:59:40,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:40,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:40,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:40,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:40,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:40,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:59:40,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 575 transitions, 9618 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:40,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:40,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:59:40,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:45,530 INFO L124 PetriNetUnfolderBase]: 10272/15707 cut-off events. [2024-06-28 01:59:45,530 INFO L125 PetriNetUnfolderBase]: For 489979/490015 co-relation queries the response was YES. [2024-06-28 01:59:45,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129113 conditions, 15707 events. 10272/15707 cut-off events. For 489979/490015 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 98725 event pairs, 2316 based on Foata normal form. 40/15365 useless extension candidates. Maximal degree in co-relation 128983. Up to 13621 conditions per place. [2024-06-28 01:59:45,741 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 564 selfloop transitions, 161 changer transitions 0/731 dead transitions. [2024-06-28 01:59:45,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 731 transitions, 12798 flow [2024-06-28 01:59:45,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:59:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:59:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-06-28 01:59:45,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-06-28 01:59:45,743 INFO L175 Difference]: Start difference. First operand has 259 places, 575 transitions, 9618 flow. Second operand 10 states and 237 transitions. [2024-06-28 01:59:45,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 731 transitions, 12798 flow [2024-06-28 01:59:47,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 731 transitions, 12506 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:59:47,238 INFO L231 Difference]: Finished difference. Result has 266 places, 648 transitions, 11087 flow [2024-06-28 01:59:47,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9352, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11087, PETRI_PLACES=266, PETRI_TRANSITIONS=648} [2024-06-28 01:59:47,239 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 212 predicate places. [2024-06-28 01:59:47,239 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 648 transitions, 11087 flow [2024-06-28 01:59:47,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:47,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:47,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:47,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:59:47,240 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:47,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:47,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1302742314, now seen corresponding path program 5 times [2024-06-28 01:59:47,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:47,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728178570] [2024-06-28 01:59:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:47,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:59:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:59:49,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:59:49,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728178570] [2024-06-28 01:59:49,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728178570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:59:49,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:59:49,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:59:49,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975122294] [2024-06-28 01:59:49,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:59:49,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:59:49,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:59:49,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:59:49,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:59:49,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 01:59:49,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 648 transitions, 11087 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:49,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:59:49,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 01:59:49,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:59:55,137 INFO L124 PetriNetUnfolderBase]: 10346/15810 cut-off events. [2024-06-28 01:59:55,137 INFO L125 PetriNetUnfolderBase]: For 526579/526617 co-relation queries the response was YES. [2024-06-28 01:59:55,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133797 conditions, 15810 events. 10346/15810 cut-off events. For 526579/526617 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 99454 event pairs, 2320 based on Foata normal form. 44/15471 useless extension candidates. Maximal degree in co-relation 133663. Up to 14025 conditions per place. [2024-06-28 01:59:55,490 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 608 selfloop transitions, 147 changer transitions 0/761 dead transitions. [2024-06-28 01:59:55,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 761 transitions, 13733 flow [2024-06-28 01:59:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:59:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:59:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 242 transitions. [2024-06-28 01:59:55,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:59:55,492 INFO L175 Difference]: Start difference. First operand has 266 places, 648 transitions, 11087 flow. Second operand 11 states and 242 transitions. [2024-06-28 01:59:55,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 761 transitions, 13733 flow [2024-06-28 01:59:57,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 761 transitions, 13180 flow, removed 240 selfloop flow, removed 4 redundant places. [2024-06-28 01:59:57,564 INFO L231 Difference]: Finished difference. Result has 276 places, 685 transitions, 11813 flow [2024-06-28 01:59:57,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10672, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11813, PETRI_PLACES=276, PETRI_TRANSITIONS=685} [2024-06-28 01:59:57,567 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 222 predicate places. [2024-06-28 01:59:57,568 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 685 transitions, 11813 flow [2024-06-28 01:59:57,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:59:57,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:59:57,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:59:57,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:59:57,568 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:59:57,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:59:57,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1741503978, now seen corresponding path program 4 times [2024-06-28 01:59:57,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:59:57,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602351163] [2024-06-28 01:59:57,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:59:57,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:59:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:00,195 INFO 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 02:00:00,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:00,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602351163] [2024-06-28 02:00:00,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602351163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:00,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:00,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:00,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111013520] [2024-06-28 02:00:00,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:00,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:00,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:00,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:00,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:00,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 48 [2024-06-28 02:00:00,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 685 transitions, 11813 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 02:00:00,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:00,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 48 [2024-06-28 02:00:00,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:00:05,711 INFO L124 PetriNetUnfolderBase]: 10168/15698 cut-off events. [2024-06-28 02:00:05,711 INFO L125 PetriNetUnfolderBase]: For 585678/586361 co-relation queries the response was YES. [2024-06-28 02:00:06,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136906 conditions, 15698 events. 10168/15698 cut-off events. For 585678/586361 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 101359 event pairs, 2059 based on Foata normal form. 77/15181 useless extension candidates. Maximal degree in co-relation 136767. Up to 12861 conditions per place. [2024-06-28 02:00:06,223 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 511 selfloop transitions, 132 changer transitions 0/774 dead transitions. [2024-06-28 02:00:06,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 774 transitions, 13857 flow [2024-06-28 02:00:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:00:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:00:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-28 02:00:06,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-06-28 02:00:06,225 INFO L175 Difference]: Start difference. First operand has 276 places, 685 transitions, 11813 flow. Second operand 9 states and 237 transitions. [2024-06-28 02:00:06,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 774 transitions, 13857 flow [2024-06-28 02:00:08,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 774 transitions, 13479 flow, removed 158 selfloop flow, removed 4 redundant places. [2024-06-28 02:00:08,203 INFO L231 Difference]: Finished difference. Result has 281 places, 688 transitions, 11800 flow [2024-06-28 02:00:08,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=11435, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11800, PETRI_PLACES=281, PETRI_TRANSITIONS=688} [2024-06-28 02:00:08,204 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 227 predicate places. [2024-06-28 02:00:08,204 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 688 transitions, 11800 flow [2024-06-28 02:00:08,205 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 02:00:08,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:00:08,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:00:08,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:00:08,205 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:00:08,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:00:08,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1302915294, now seen corresponding path program 6 times [2024-06-28 02:00:08,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:00:08,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644591031] [2024-06-28 02:00:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:00:08,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:00:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:00:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:00:10,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:00:10,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644591031] [2024-06-28 02:00:10,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644591031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:00:10,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:00:10,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:00:10,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391826286] [2024-06-28 02:00:10,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:00:10,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:00:10,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:00:10,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:00:10,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:00:10,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2024-06-28 02:00:10,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 688 transitions, 11800 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:00:10,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:00:10,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2024-06-28 02:00:10,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand