./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi006_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/rfi006_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/rfi006_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi006_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 01:43:58,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:43:58,167 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:43:58,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:43:58,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:43:58,194 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:43:58,195 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:43:58,195 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:43:58,196 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:43:58,199 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:43:58,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:43:58,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:43:58,200 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:43:58,201 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:43:58,201 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:43:58,201 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:43:58,201 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:43:58,202 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:43:58,202 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:43:58,202 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:43:58,202 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:43:58,203 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:43:58,203 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:43:58,203 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:43:58,203 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:43:58,203 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:43:58,204 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:43:58,204 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:43:58,204 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:43:58,205 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:43:58,205 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:43:58,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:43:58,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:43:58,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:43:58,206 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:43:58,206 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:43:58,206 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:43:58,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:43:58,207 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:43:58,207 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:43:58,207 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:43:58,207 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:43:58,207 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:43:58,208 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:43:58,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:43:58,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:43:58,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:43:58,449 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:43:58,450 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:43:58,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi006_power.opt.yml/witness.yml [2024-06-28 01:43:58,726 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:43:58,727 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:43:58,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi006_power.opt.i [2024-06-28 01:43:59,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:44:00,077 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:44:00,077 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi006_power.opt.i [2024-06-28 01:44:00,089 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4007ae2b/428dad7fd4914703b658845bf9666a13/FLAG80411ede0 [2024-06-28 01:44:00,103 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4007ae2b/428dad7fd4914703b658845bf9666a13 [2024-06-28 01:44:00,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:44:00,109 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:44:00,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:44:00,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:44:00,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:44:00,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:58" (1/2) ... [2024-06-28 01:44:00,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27027004 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:44:00, skipping insertion in model container [2024-06-28 01:44:00,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:58" (1/2) ... [2024-06-28 01:44:00,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b7fb1bb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:44:00, skipping insertion in model container [2024-06-28 01:44:00,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:44:00" (2/2) ... [2024-06-28 01:44:00,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27027004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00, skipping insertion in model container [2024-06-28 01:44:00,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:44:00" (2/2) ... [2024-06-28 01:44:00,119 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:44:00,245 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:44:00,246 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] ((((((((((((((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 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)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:44:00,247 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ((((((((((((((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:44:00,247 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] ((((((((((((((((((((((((((((((((! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd2 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd2 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 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)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & x && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:44:00,247 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:44:00,247 INFO L106 edCorrectnessWitness]: ghost_update [L858-L858] multithreaded = 1; [2024-06-28 01:44:00,285 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:44:00,425 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/rfi006_power.opt.i[993,1006] [2024-06-28 01:44:00,567 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:44:00,575 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:44:00,606 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/rfi006_power.opt.i[993,1006] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:44:00,738 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:44:00,784 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:44:00,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00 WrapperNode [2024-06-28 01:44:00,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:44:00,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:44:00,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:44:00,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:44:00,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,841 INFO L138 Inliner]: procedures = 175, calls = 87, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 247 [2024-06-28 01:44:00,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:44:00,842 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:44:00,842 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:44:00,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:44:00,862 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,867 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,917 INFO L175 MemorySlicer]: Split 46 memory accesses to 2 slices as follows [2, 44]. 96 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 01:44:00,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,928 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,929 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,952 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:44:00,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:44:00,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:44:00,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:44:00,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (1/1) ... [2024-06-28 01:44:00,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:44:00,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:44:01,021 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 01:44:01,079 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 01:44:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 01:44:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 01:44:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 01:44:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 01:44:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:44:01,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:44:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:44:01,104 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:44:01,104 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:44:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:44:01,105 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:44:01,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:44:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:44:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:44:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:44:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:44:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:44:01,109 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 01:44:01,273 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:44:01,275 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:44:01,802 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:44:01,802 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:44:02,166 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:44:02,166 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:44:02,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:44:02 BoogieIcfgContainer [2024-06-28 01:44:02,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:44:02,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:44:02,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:44:02,172 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:44:02,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:58" (1/4) ... [2024-06-28 01:44:02,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53017d60 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:44:02, skipping insertion in model container [2024-06-28 01:44:02,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:44:00" (2/4) ... [2024-06-28 01:44:02,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53017d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:44:02, skipping insertion in model container [2024-06-28 01:44:02,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:44:00" (3/4) ... [2024-06-28 01:44:02,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53017d60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:44:02, skipping insertion in model container [2024-06-28 01:44:02,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:44:02" (4/4) ... [2024-06-28 01:44:02,174 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi006_power.opt.i [2024-06-28 01:44:02,188 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:44:02,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:44:02,189 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:44:02,245 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:44:02,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:44:02,341 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:44:02,342 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:44:02,344 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 5. 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 01:44:02,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:44:02,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:44:02,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:44:02,389 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;@13a619f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:44:02,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:44:02,393 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:44:02,408 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:44:02,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:44:02,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:02,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:44:02,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:02,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:02,413 INFO L85 PathProgramCache]: Analyzing trace with hash 826991247, now seen corresponding path program 1 times [2024-06-28 01:44:02,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:02,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372814740] [2024-06-28 01:44:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:02,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:04,027 INFO 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 01:44:04,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372814740] [2024-06-28 01:44:04,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372814740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:04,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:04,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:44:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708162786] [2024-06-28 01:44:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:04,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:44:04,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:04,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:44:04,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:44:04,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:44:04,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:04,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:04,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:44:04,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:05,179 INFO L124 PetriNetUnfolderBase]: 3714/5930 cut-off events. [2024-06-28 01:44:05,179 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 01:44:05,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11359 conditions, 5930 events. 3714/5930 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 36447 event pairs, 2485 based on Foata normal form. 150/5496 useless extension candidates. Maximal degree in co-relation 11347. Up to 5348 conditions per place. [2024-06-28 01:44:05,210 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 46 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2024-06-28 01:44:05,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 243 flow [2024-06-28 01:44:05,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:44:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:44:05,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 01:44:05,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597222222222222 [2024-06-28 01:44:05,222 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 95 transitions. [2024-06-28 01:44:05,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 243 flow [2024-06-28 01:44:05,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 238 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:05,229 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 138 flow [2024-06-28 01:44:05,231 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=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-28 01:44:05,233 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:44:05,233 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 138 flow [2024-06-28 01:44:05,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:05,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:05,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:05,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:44:05,234 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:05,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:05,236 INFO L85 PathProgramCache]: Analyzing trace with hash 169703118, now seen corresponding path program 1 times [2024-06-28 01:44:05,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:05,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739376172] [2024-06-28 01:44:05,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:05,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:07,263 INFO 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 01:44:07,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:07,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739376172] [2024-06-28 01:44:07,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739376172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:07,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:07,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:44:07,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486398246] [2024-06-28 01:44:07,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:07,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:44:07,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:07,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:44:07,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:44:07,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:44:07,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:07,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:07,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:44:07,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:08,281 INFO L124 PetriNetUnfolderBase]: 3651/5511 cut-off events. [2024-06-28 01:44:08,281 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-06-28 01:44:08,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12301 conditions, 5511 events. 3651/5511 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 31514 event pairs, 1761 based on Foata normal form. 3/5247 useless extension candidates. Maximal degree in co-relation 12289. Up to 5226 conditions per place. [2024-06-28 01:44:08,306 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 65 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-06-28 01:44:08,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 85 transitions, 377 flow [2024-06-28 01:44:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:44:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:44:08,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-28 01:44:08,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.671875 [2024-06-28 01:44:08,311 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 138 flow. Second operand 4 states and 129 transitions. [2024-06-28 01:44:08,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 85 transitions, 377 flow [2024-06-28 01:44:08,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 85 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:44:08,314 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 200 flow [2024-06-28 01:44:08,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-28 01:44:08,317 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2024-06-28 01:44:08,317 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 200 flow [2024-06-28 01:44:08,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:08,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:08,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:08,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:44:08,323 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:08,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:08,325 INFO L85 PathProgramCache]: Analyzing trace with hash 965831439, now seen corresponding path program 1 times [2024-06-28 01:44:08,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:08,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941627431] [2024-06-28 01:44:08,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:08,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:10,245 INFO 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 01:44:10,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:10,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941627431] [2024-06-28 01:44:10,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941627431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:10,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:10,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:44:10,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441085547] [2024-06-28 01:44:10,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:10,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:44:10,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:10,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:44:10,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:44:10,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:44:10,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:10,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:10,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:44:10,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:11,593 INFO L124 PetriNetUnfolderBase]: 4371/6426 cut-off events. [2024-06-28 01:44:11,593 INFO L125 PetriNetUnfolderBase]: For 4542/4542 co-relation queries the response was YES. [2024-06-28 01:44:11,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16482 conditions, 6426 events. 4371/6426 cut-off events. For 4542/4542 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 35865 event pairs, 1499 based on Foata normal form. 54/6467 useless extension candidates. Maximal degree in co-relation 16467. Up to 6087 conditions per place. [2024-06-28 01:44:11,629 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 90 selfloop transitions, 18 changer transitions 0/117 dead transitions. [2024-06-28 01:44:11,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 117 transitions, 598 flow [2024-06-28 01:44:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:44:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:44:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-06-28 01:44:11,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6916666666666667 [2024-06-28 01:44:11,634 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 200 flow. Second operand 5 states and 166 transitions. [2024-06-28 01:44:11,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 117 transitions, 598 flow [2024-06-28 01:44:11,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 117 transitions, 598 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 01:44:11,645 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 328 flow [2024-06-28 01:44:11,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-06-28 01:44:11,646 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-28 01:44:11,646 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 328 flow [2024-06-28 01:44:11,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:11,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:11,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:11,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:44:11,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:11,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:11,648 INFO L85 PathProgramCache]: Analyzing trace with hash 451144430, now seen corresponding path program 1 times [2024-06-28 01:44:11,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:11,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976224738] [2024-06-28 01:44:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:11,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:13,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:13,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976224738] [2024-06-28 01:44:13,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976224738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:13,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:13,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:44:13,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503397643] [2024-06-28 01:44:13,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:13,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:44:13,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:13,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:44:13,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:44:13,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:44:13,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:13,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:13,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:44:13,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:15,211 INFO L124 PetriNetUnfolderBase]: 4439/6518 cut-off events. [2024-06-28 01:44:15,211 INFO L125 PetriNetUnfolderBase]: For 11564/11567 co-relation queries the response was YES. [2024-06-28 01:44:15,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20021 conditions, 6518 events. 4439/6518 cut-off events. For 11564/11567 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 36302 event pairs, 1013 based on Foata normal form. 13/6518 useless extension candidates. Maximal degree in co-relation 20001. Up to 6059 conditions per place. [2024-06-28 01:44:15,250 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 102 selfloop transitions, 22 changer transitions 0/133 dead transitions. [2024-06-28 01:44:15,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 133 transitions, 778 flow [2024-06-28 01:44:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-28 01:44:15,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6631944444444444 [2024-06-28 01:44:15,251 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 328 flow. Second operand 6 states and 191 transitions. [2024-06-28 01:44:15,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 133 transitions, 778 flow [2024-06-28 01:44:15,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 768 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 01:44:15,264 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 405 flow [2024-06-28 01:44:15,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=405, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-06-28 01:44:15,266 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-28 01:44:15,266 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 405 flow [2024-06-28 01:44:15,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:15,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:15,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:15,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:44:15,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:15,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:15,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1438816573, now seen corresponding path program 1 times [2024-06-28 01:44:15,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:15,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599384787] [2024-06-28 01:44:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:15,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:16,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:16,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599384787] [2024-06-28 01:44:16,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599384787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:16,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:16,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:44:16,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69935789] [2024-06-28 01:44:16,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:16,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:44:16,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:44:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:44:16,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:16,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:16,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:16,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:16,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:17,792 INFO L124 PetriNetUnfolderBase]: 4434/6991 cut-off events. [2024-06-28 01:44:17,793 INFO L125 PetriNetUnfolderBase]: For 13424/13424 co-relation queries the response was YES. [2024-06-28 01:44:17,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21451 conditions, 6991 events. 4434/6991 cut-off events. For 13424/13424 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 43045 event pairs, 1912 based on Foata normal form. 2/6811 useless extension candidates. Maximal degree in co-relation 21427. Up to 6345 conditions per place. [2024-06-28 01:44:17,828 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 76 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2024-06-28 01:44:17,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 661 flow [2024-06-28 01:44:17,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:44:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:44:17,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-06-28 01:44:17,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-28 01:44:17,834 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 405 flow. Second operand 5 states and 122 transitions. [2024-06-28 01:44:17,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 661 flow [2024-06-28 01:44:17,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 94 transitions, 598 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:17,843 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 413 flow [2024-06-28 01:44:17,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2024-06-28 01:44:17,845 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-28 01:44:17,845 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 413 flow [2024-06-28 01:44:17,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:17,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:17,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:17,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:44:17,846 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:17,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1606563496, now seen corresponding path program 1 times [2024-06-28 01:44:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:17,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876290533] [2024-06-28 01:44:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:19,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:19,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876290533] [2024-06-28 01:44:19,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876290533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:19,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:19,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710958008] [2024-06-28 01:44:19,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:19,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:19,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:19,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:19,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:19,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:19,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 413 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:19,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:19,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:19,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:20,866 INFO L124 PetriNetUnfolderBase]: 4422/6977 cut-off events. [2024-06-28 01:44:20,867 INFO L125 PetriNetUnfolderBase]: For 13328/13328 co-relation queries the response was YES. [2024-06-28 01:44:20,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21180 conditions, 6977 events. 4422/6977 cut-off events. For 13328/13328 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 42896 event pairs, 1786 based on Foata normal form. 4/6764 useless extension candidates. Maximal degree in co-relation 21154. Up to 6291 conditions per place. [2024-06-28 01:44:20,903 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 86 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2024-06-28 01:44:20,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 725 flow [2024-06-28 01:44:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:44:20,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:44:20,905 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 413 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:44:20,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 109 transitions, 725 flow [2024-06-28 01:44:20,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 109 transitions, 700 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:20,916 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 476 flow [2024-06-28 01:44:20,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=476, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2024-06-28 01:44:20,919 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2024-06-28 01:44:20,919 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 476 flow [2024-06-28 01:44:20,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:20,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:20,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:20,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:44:20,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:20,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:20,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1741858918, now seen corresponding path program 1 times [2024-06-28 01:44:20,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:20,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692544983] [2024-06-28 01:44:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:22,679 INFO 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 01:44:22,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:22,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692544983] [2024-06-28 01:44:22,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692544983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:22,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:22,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:22,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113594974] [2024-06-28 01:44:22,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:22,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:22,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:22,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 476 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:22,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:22,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:22,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:24,391 INFO L124 PetriNetUnfolderBase]: 4451/6611 cut-off events. [2024-06-28 01:44:24,391 INFO L125 PetriNetUnfolderBase]: For 16903/16912 co-relation queries the response was YES. [2024-06-28 01:44:24,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22428 conditions, 6611 events. 4451/6611 cut-off events. For 16903/16912 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 37444 event pairs, 1422 based on Foata normal form. 13/6546 useless extension candidates. Maximal degree in co-relation 22401. Up to 6177 conditions per place. [2024-06-28 01:44:24,417 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 93 selfloop transitions, 24 changer transitions 0/125 dead transitions. [2024-06-28 01:44:24,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 125 transitions, 868 flow [2024-06-28 01:44:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:24,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:24,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-28 01:44:24,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 01:44:24,418 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 476 flow. Second operand 6 states and 162 transitions. [2024-06-28 01:44:24,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 125 transitions, 868 flow [2024-06-28 01:44:24,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 125 transitions, 816 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:24,431 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 506 flow [2024-06-28 01:44:24,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=506, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-06-28 01:44:24,432 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-28 01:44:24,432 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 506 flow [2024-06-28 01:44:24,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:24,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:24,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:24,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:44:24,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:24,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:24,433 INFO L85 PathProgramCache]: Analyzing trace with hash -276683908, now seen corresponding path program 2 times [2024-06-28 01:44:24,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:24,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258784464] [2024-06-28 01:44:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:24,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:26,202 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 01:44:26,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:26,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258784464] [2024-06-28 01:44:26,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258784464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:26,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:26,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:44:26,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697531118] [2024-06-28 01:44:26,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:26,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:44:26,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:26,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:44:26,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:44:26,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:26,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 506 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:26,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:26,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:26,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:27,762 INFO L124 PetriNetUnfolderBase]: 4437/6572 cut-off events. [2024-06-28 01:44:27,763 INFO L125 PetriNetUnfolderBase]: For 18106/18106 co-relation queries the response was YES. [2024-06-28 01:44:27,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22565 conditions, 6572 events. 4437/6572 cut-off events. For 18106/18106 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 37136 event pairs, 1448 based on Foata normal form. 2/6483 useless extension candidates. Maximal degree in co-relation 22537. Up to 6159 conditions per place. [2024-06-28 01:44:27,801 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 87 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-06-28 01:44:27,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 836 flow [2024-06-28 01:44:27,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:44:27,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:44:27,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 01:44:27,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451388888888888 [2024-06-28 01:44:27,802 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 506 flow. Second operand 6 states and 157 transitions. [2024-06-28 01:44:27,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 836 flow [2024-06-28 01:44:27,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 803 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:27,816 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 532 flow [2024-06-28 01:44:27,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=532, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-06-28 01:44:27,817 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2024-06-28 01:44:27,817 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 532 flow [2024-06-28 01:44:27,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:27,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:27,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:27,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:44:27,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:27,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1865267859, now seen corresponding path program 1 times [2024-06-28 01:44:27,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:27,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438224426] [2024-06-28 01:44:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:29,707 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 01:44:29,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:29,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438224426] [2024-06-28 01:44:29,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438224426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:29,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:29,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:29,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267814271] [2024-06-28 01:44:29,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:29,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:29,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:29,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:29,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:29,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:29,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 532 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:29,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:29,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:29,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:31,584 INFO L124 PetriNetUnfolderBase]: 5057/7496 cut-off events. [2024-06-28 01:44:31,599 INFO L125 PetriNetUnfolderBase]: For 25295/25295 co-relation queries the response was YES. [2024-06-28 01:44:31,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27056 conditions, 7496 events. 5057/7496 cut-off events. For 25295/25295 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 42601 event pairs, 1197 based on Foata normal form. 8/7398 useless extension candidates. Maximal degree in co-relation 27027. Up to 6300 conditions per place. [2024-06-28 01:44:31,636 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 134 selfloop transitions, 52 changer transitions 0/194 dead transitions. [2024-06-28 01:44:31,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 194 transitions, 1518 flow [2024-06-28 01:44:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 232 transitions. [2024-06-28 01:44:31,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-06-28 01:44:31,638 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 532 flow. Second operand 8 states and 232 transitions. [2024-06-28 01:44:31,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 194 transitions, 1518 flow [2024-06-28 01:44:31,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 194 transitions, 1414 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:31,657 INFO L231 Difference]: Finished difference. Result has 86 places, 112 transitions, 933 flow [2024-06-28 01:44:31,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=933, PETRI_PLACES=86, PETRI_TRANSITIONS=112} [2024-06-28 01:44:31,658 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-28 01:44:31,658 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 112 transitions, 933 flow [2024-06-28 01:44:31,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:31,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:31,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:31,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:44:31,659 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:31,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:31,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1434386323, now seen corresponding path program 2 times [2024-06-28 01:44:31,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:31,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130081084] [2024-06-28 01:44:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:31,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:33,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:33,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130081084] [2024-06-28 01:44:33,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130081084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:33,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:33,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:33,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836133389] [2024-06-28 01:44:33,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:33,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:33,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:33,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:33,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:33,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:33,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 112 transitions, 933 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:33,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:33,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:33,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:35,453 INFO L124 PetriNetUnfolderBase]: 5065/7588 cut-off events. [2024-06-28 01:44:35,454 INFO L125 PetriNetUnfolderBase]: For 36806/36814 co-relation queries the response was YES. [2024-06-28 01:44:35,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29941 conditions, 7588 events. 5065/7588 cut-off events. For 36806/36814 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 43827 event pairs, 1229 based on Foata normal form. 212/7710 useless extension candidates. Maximal degree in co-relation 29907. Up to 6160 conditions per place. [2024-06-28 01:44:35,493 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 115 selfloop transitions, 55 changer transitions 0/178 dead transitions. [2024-06-28 01:44:35,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 178 transitions, 1490 flow [2024-06-28 01:44:35,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-28 01:44:35,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863095238095238 [2024-06-28 01:44:35,495 INFO L175 Difference]: Start difference. First operand has 86 places, 112 transitions, 933 flow. Second operand 7 states and 197 transitions. [2024-06-28 01:44:35,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 178 transitions, 1490 flow [2024-06-28 01:44:35,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 178 transitions, 1474 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 01:44:35,529 INFO L231 Difference]: Finished difference. Result has 92 places, 114 transitions, 1029 flow [2024-06-28 01:44:35,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1029, PETRI_PLACES=92, PETRI_TRANSITIONS=114} [2024-06-28 01:44:35,530 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-28 01:44:35,530 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 114 transitions, 1029 flow [2024-06-28 01:44:35,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:35,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:35,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:44:35,531 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:35,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2009124103, now seen corresponding path program 3 times [2024-06-28 01:44:35,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:35,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173567080] [2024-06-28 01:44:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:37,490 INFO 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 01:44:37,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:37,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173567080] [2024-06-28 01:44:37,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173567080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:37,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:37,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:37,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778903846] [2024-06-28 01:44:37,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:37,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:37,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:37,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:37,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 114 transitions, 1029 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:37,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:37,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:37,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:39,437 INFO L124 PetriNetUnfolderBase]: 5193/7745 cut-off events. [2024-06-28 01:44:39,437 INFO L125 PetriNetUnfolderBase]: For 37747/37751 co-relation queries the response was YES. [2024-06-28 01:44:39,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32565 conditions, 7745 events. 5193/7745 cut-off events. For 37747/37751 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 44286 event pairs, 1269 based on Foata normal form. 8/7656 useless extension candidates. Maximal degree in co-relation 32528. Up to 6220 conditions per place. [2024-06-28 01:44:39,493 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 115 selfloop transitions, 65 changer transitions 0/188 dead transitions. [2024-06-28 01:44:39,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 188 transitions, 1793 flow [2024-06-28 01:44:39,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:39,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-28 01:44:39,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773809523809523 [2024-06-28 01:44:39,495 INFO L175 Difference]: Start difference. First operand has 92 places, 114 transitions, 1029 flow. Second operand 7 states and 194 transitions. [2024-06-28 01:44:39,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 188 transitions, 1793 flow [2024-06-28 01:44:39,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 188 transitions, 1678 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:39,545 INFO L231 Difference]: Finished difference. Result has 95 places, 124 transitions, 1188 flow [2024-06-28 01:44:39,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1188, PETRI_PLACES=95, PETRI_TRANSITIONS=124} [2024-06-28 01:44:39,546 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-28 01:44:39,546 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 124 transitions, 1188 flow [2024-06-28 01:44:39,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:39,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:39,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:39,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:44:39,547 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:39,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:39,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2014319143, now seen corresponding path program 4 times [2024-06-28 01:44:39,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:39,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360459093] [2024-06-28 01:44:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:39,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:41,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:41,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360459093] [2024-06-28 01:44:41,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360459093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:41,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:41,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:41,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636162555] [2024-06-28 01:44:41,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:41,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:41,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:41,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:41,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:41,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:41,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 124 transitions, 1188 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:41,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:41,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:41,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:43,048 INFO L124 PetriNetUnfolderBase]: 5177/7738 cut-off events. [2024-06-28 01:44:43,048 INFO L125 PetriNetUnfolderBase]: For 38997/39007 co-relation queries the response was YES. [2024-06-28 01:44:43,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32368 conditions, 7738 events. 5177/7738 cut-off events. For 38997/39007 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 44466 event pairs, 1212 based on Foata normal form. 14/7659 useless extension candidates. Maximal degree in co-relation 32330. Up to 6213 conditions per place. [2024-06-28 01:44:43,095 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 111 selfloop transitions, 67 changer transitions 0/186 dead transitions. [2024-06-28 01:44:43,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 186 transitions, 1782 flow [2024-06-28 01:44:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:43,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-28 01:44:43,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684523809523809 [2024-06-28 01:44:43,097 INFO L175 Difference]: Start difference. First operand has 95 places, 124 transitions, 1188 flow. Second operand 7 states and 191 transitions. [2024-06-28 01:44:43,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 186 transitions, 1782 flow [2024-06-28 01:44:43,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 186 transitions, 1748 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 01:44:43,141 INFO L231 Difference]: Finished difference. Result has 101 places, 124 transitions, 1299 flow [2024-06-28 01:44:43,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1299, PETRI_PLACES=101, PETRI_TRANSITIONS=124} [2024-06-28 01:44:43,141 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-28 01:44:43,141 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 124 transitions, 1299 flow [2024-06-28 01:44:43,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:43,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:43,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:43,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:44:43,142 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:43,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:43,142 INFO L85 PathProgramCache]: Analyzing trace with hash 850573428, now seen corresponding path program 1 times [2024-06-28 01:44:43,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:43,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777178862] [2024-06-28 01:44:43,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:43,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:45,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:45,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:45,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777178862] [2024-06-28 01:44:45,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777178862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:45,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:45,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:45,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184885315] [2024-06-28 01:44:45,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:45,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:45,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:45,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:45,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:45,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:45,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 124 transitions, 1299 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:45,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:45,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:45,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:47,108 INFO L124 PetriNetUnfolderBase]: 5313/7987 cut-off events. [2024-06-28 01:44:47,108 INFO L125 PetriNetUnfolderBase]: For 45537/45543 co-relation queries the response was YES. [2024-06-28 01:44:47,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34623 conditions, 7987 events. 5313/7987 cut-off events. For 45537/45543 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 46616 event pairs, 1252 based on Foata normal form. 12/7905 useless extension candidates. Maximal degree in co-relation 34582. Up to 6327 conditions per place. [2024-06-28 01:44:47,159 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 131 selfloop transitions, 69 changer transitions 0/208 dead transitions. [2024-06-28 01:44:47,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 208 transitions, 2071 flow [2024-06-28 01:44:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-28 01:44:47,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755208333333334 [2024-06-28 01:44:47,164 INFO L175 Difference]: Start difference. First operand has 101 places, 124 transitions, 1299 flow. Second operand 8 states and 221 transitions. [2024-06-28 01:44:47,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 208 transitions, 2071 flow [2024-06-28 01:44:47,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 208 transitions, 1936 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:47,214 INFO L231 Difference]: Finished difference. Result has 104 places, 130 transitions, 1402 flow [2024-06-28 01:44:47,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1402, PETRI_PLACES=104, PETRI_TRANSITIONS=130} [2024-06-28 01:44:47,215 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-28 01:44:47,215 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 130 transitions, 1402 flow [2024-06-28 01:44:47,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:47,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:47,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:47,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:44:47,216 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:47,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1110886132, now seen corresponding path program 2 times [2024-06-28 01:44:47,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:47,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95259007] [2024-06-28 01:44:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:47,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:49,045 INFO 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 01:44:49,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:49,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95259007] [2024-06-28 01:44:49,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95259007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:49,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:49,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:44:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764427706] [2024-06-28 01:44:49,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:49,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:44:49,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:44:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:44:49,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:49,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 130 transitions, 1402 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:49,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:49,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:49,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:51,006 INFO L124 PetriNetUnfolderBase]: 5437/8230 cut-off events. [2024-06-28 01:44:51,006 INFO L125 PetriNetUnfolderBase]: For 53407/53415 co-relation queries the response was YES. [2024-06-28 01:44:51,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35866 conditions, 8230 events. 5437/8230 cut-off events. For 53407/53415 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 48563 event pairs, 1312 based on Foata normal form. 16/8144 useless extension candidates. Maximal degree in co-relation 35824. Up to 6432 conditions per place. [2024-06-28 01:44:51,057 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 120 selfloop transitions, 76 changer transitions 0/204 dead transitions. [2024-06-28 01:44:51,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 204 transitions, 2136 flow [2024-06-28 01:44:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:44:51,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:44:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-06-28 01:44:51,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5922619047619048 [2024-06-28 01:44:51,073 INFO L175 Difference]: Start difference. First operand has 104 places, 130 transitions, 1402 flow. Second operand 7 states and 199 transitions. [2024-06-28 01:44:51,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 204 transitions, 2136 flow [2024-06-28 01:44:51,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 204 transitions, 1970 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:51,157 INFO L231 Difference]: Finished difference. Result has 105 places, 136 transitions, 1487 flow [2024-06-28 01:44:51,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1487, PETRI_PLACES=105, PETRI_TRANSITIONS=136} [2024-06-28 01:44:51,158 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-28 01:44:51,158 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 136 transitions, 1487 flow [2024-06-28 01:44:51,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:51,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:51,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:51,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:44:51,159 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:51,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash 394803234, now seen corresponding path program 3 times [2024-06-28 01:44:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:51,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588792573] [2024-06-28 01:44:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:51,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:53,484 INFO 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 01:44:53,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:53,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588792573] [2024-06-28 01:44:53,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588792573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:53,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:53,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:53,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761380000] [2024-06-28 01:44:53,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:53,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:53,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:53,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:53,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:53,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:53,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 136 transitions, 1487 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:53,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:53,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:53,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:55,805 INFO L124 PetriNetUnfolderBase]: 5565/8361 cut-off events. [2024-06-28 01:44:55,805 INFO L125 PetriNetUnfolderBase]: For 56285/56289 co-relation queries the response was YES. [2024-06-28 01:44:55,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37096 conditions, 8361 events. 5565/8361 cut-off events. For 56285/56289 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 48703 event pairs, 1314 based on Foata normal form. 8/8264 useless extension candidates. Maximal degree in co-relation 37053. Up to 6540 conditions per place. [2024-06-28 01:44:55,856 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 127 selfloop transitions, 83 changer transitions 0/218 dead transitions. [2024-06-28 01:44:55,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 218 transitions, 2289 flow [2024-06-28 01:44:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-28 01:44:55,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703125 [2024-06-28 01:44:55,858 INFO L175 Difference]: Start difference. First operand has 105 places, 136 transitions, 1487 flow. Second operand 8 states and 219 transitions. [2024-06-28 01:44:55,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 218 transitions, 2289 flow [2024-06-28 01:44:55,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 218 transitions, 2095 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:55,906 INFO L231 Difference]: Finished difference. Result has 108 places, 142 transitions, 1558 flow [2024-06-28 01:44:55,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1558, PETRI_PLACES=108, PETRI_TRANSITIONS=142} [2024-06-28 01:44:55,907 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2024-06-28 01:44:55,907 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 142 transitions, 1558 flow [2024-06-28 01:44:55,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:55,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:55,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:55,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:44:55,908 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:55,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:55,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1912141014, now seen corresponding path program 4 times [2024-06-28 01:44:55,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:55,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489763529] [2024-06-28 01:44:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:55,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:58,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:58,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489763529] [2024-06-28 01:44:58,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489763529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:58,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:58,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:58,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580299689] [2024-06-28 01:44:58,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:58,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:58,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:58,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:58,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:58,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:44:58,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 142 transitions, 1558 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:58,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:58,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:44:58,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:00,329 INFO L124 PetriNetUnfolderBase]: 5549/8393 cut-off events. [2024-06-28 01:45:00,329 INFO L125 PetriNetUnfolderBase]: For 54421/54429 co-relation queries the response was YES. [2024-06-28 01:45:00,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37039 conditions, 8393 events. 5549/8393 cut-off events. For 54421/54429 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 49700 event pairs, 1234 based on Foata normal form. 12/8312 useless extension candidates. Maximal degree in co-relation 36996. Up to 6527 conditions per place. [2024-06-28 01:45:00,380 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 138 selfloop transitions, 85 changer transitions 0/231 dead transitions. [2024-06-28 01:45:00,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 231 transitions, 2294 flow [2024-06-28 01:45:00,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:00,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-28 01:45:00,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 01:45:00,382 INFO L175 Difference]: Start difference. First operand has 108 places, 142 transitions, 1558 flow. Second operand 9 states and 243 transitions. [2024-06-28 01:45:00,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 231 transitions, 2294 flow [2024-06-28 01:45:00,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 231 transitions, 2158 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:00,455 INFO L231 Difference]: Finished difference. Result has 112 places, 142 transitions, 1603 flow [2024-06-28 01:45:00,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1422, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1603, PETRI_PLACES=112, PETRI_TRANSITIONS=142} [2024-06-28 01:45:00,456 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-28 01:45:00,456 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 142 transitions, 1603 flow [2024-06-28 01:45:00,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:00,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:00,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:00,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:45:00,457 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:00,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:00,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1980337063, now seen corresponding path program 1 times [2024-06-28 01:45:00,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:00,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63433812] [2024-06-28 01:45:00,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:00,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:02,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:02,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63433812] [2024-06-28 01:45:02,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63433812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:02,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:02,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:02,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731163109] [2024-06-28 01:45:02,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:02,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:02,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:02,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:02,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:02,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:45:02,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 142 transitions, 1603 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:02,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:02,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:45:02,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:04,714 INFO L124 PetriNetUnfolderBase]: 5539/8767 cut-off events. [2024-06-28 01:45:04,714 INFO L125 PetriNetUnfolderBase]: For 62152/62154 co-relation queries the response was YES. [2024-06-28 01:45:04,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37724 conditions, 8767 events. 5539/8767 cut-off events. For 62152/62154 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 54562 event pairs, 1886 based on Foata normal form. 4/8521 useless extension candidates. Maximal degree in co-relation 37679. Up to 7795 conditions per place. [2024-06-28 01:45:04,772 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 170 selfloop transitions, 22 changer transitions 0/200 dead transitions. [2024-06-28 01:45:04,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 200 transitions, 2204 flow [2024-06-28 01:45:04,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:04,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:04,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:45:04,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 01:45:04,775 INFO L175 Difference]: Start difference. First operand has 112 places, 142 transitions, 1603 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:45:04,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 200 transitions, 2204 flow [2024-06-28 01:45:04,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 200 transitions, 1910 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 01:45:04,825 INFO L231 Difference]: Finished difference. Result has 111 places, 150 transitions, 1460 flow [2024-06-28 01:45:04,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1460, PETRI_PLACES=111, PETRI_TRANSITIONS=150} [2024-06-28 01:45:04,831 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-28 01:45:04,831 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 150 transitions, 1460 flow [2024-06-28 01:45:04,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:04,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:04,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:04,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:45:04,832 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:04,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:04,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1846909545, now seen corresponding path program 1 times [2024-06-28 01:45:04,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:04,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19926810] [2024-06-28 01:45:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:04,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:06,021 INFO 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 01:45:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19926810] [2024-06-28 01:45:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19926810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:06,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:06,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:45:06,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726575734] [2024-06-28 01:45:06,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:06,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:45:06,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:06,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:45:06,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:45:06,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:45:06,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 150 transitions, 1460 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:06,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:06,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:45:06,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:07,426 INFO L124 PetriNetUnfolderBase]: 5218/8304 cut-off events. [2024-06-28 01:45:07,426 INFO L125 PetriNetUnfolderBase]: For 54555/54623 co-relation queries the response was YES. [2024-06-28 01:45:07,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35478 conditions, 8304 events. 5218/8304 cut-off events. For 54555/54623 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 52228 event pairs, 1945 based on Foata normal form. 29/8061 useless extension candidates. Maximal degree in co-relation 35432. Up to 7342 conditions per place. [2024-06-28 01:45:07,484 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 149 selfloop transitions, 10 changer transitions 0/175 dead transitions. [2024-06-28 01:45:07,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 175 transitions, 1905 flow [2024-06-28 01:45:07,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:45:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:45:07,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 01:45:07,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:45:07,486 INFO L175 Difference]: Start difference. First operand has 111 places, 150 transitions, 1460 flow. Second operand 5 states and 120 transitions. [2024-06-28 01:45:07,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 175 transitions, 1905 flow [2024-06-28 01:45:07,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 175 transitions, 1820 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:07,551 INFO L231 Difference]: Finished difference. Result has 112 places, 158 transitions, 1504 flow [2024-06-28 01:45:07,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1504, PETRI_PLACES=112, PETRI_TRANSITIONS=158} [2024-06-28 01:45:07,551 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-28 01:45:07,551 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 158 transitions, 1504 flow [2024-06-28 01:45:07,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:07,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:07,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:07,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:45:07,552 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:07,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:07,553 INFO L85 PathProgramCache]: Analyzing trace with hash -338726198, now seen corresponding path program 1 times [2024-06-28 01:45:07,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:07,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520749748] [2024-06-28 01:45:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:07,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:09,244 INFO 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 01:45:09,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:09,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520749748] [2024-06-28 01:45:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520749748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:09,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:45:09,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473115179] [2024-06-28 01:45:09,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:09,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:45:09,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:45:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:45:09,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:45:09,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 158 transitions, 1504 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:09,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:09,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:45:09,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:10,953 INFO L124 PetriNetUnfolderBase]: 5612/8490 cut-off events. [2024-06-28 01:45:10,953 INFO L125 PetriNetUnfolderBase]: For 58411/58429 co-relation queries the response was YES. [2024-06-28 01:45:10,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38476 conditions, 8490 events. 5612/8490 cut-off events. For 58411/58429 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 50134 event pairs, 867 based on Foata normal form. 20/8406 useless extension candidates. Maximal degree in co-relation 38428. Up to 7325 conditions per place. [2024-06-28 01:45:11,008 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 174 selfloop transitions, 42 changer transitions 0/224 dead transitions. [2024-06-28 01:45:11,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 224 transitions, 2282 flow [2024-06-28 01:45:11,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:45:11,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:45:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-28 01:45:11,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-06-28 01:45:11,010 INFO L175 Difference]: Start difference. First operand has 112 places, 158 transitions, 1504 flow. Second operand 7 states and 190 transitions. [2024-06-28 01:45:11,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 224 transitions, 2282 flow [2024-06-28 01:45:11,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 224 transitions, 2246 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 01:45:11,082 INFO L231 Difference]: Finished difference. Result has 117 places, 164 transitions, 1650 flow [2024-06-28 01:45:11,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1650, PETRI_PLACES=117, PETRI_TRANSITIONS=164} [2024-06-28 01:45:11,082 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-28 01:45:11,083 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 164 transitions, 1650 flow [2024-06-28 01:45:11,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:11,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:11,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:11,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:45:11,083 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:11,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash -335869238, now seen corresponding path program 2 times [2024-06-28 01:45:11,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:11,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306199822] [2024-06-28 01:45:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:11,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:13,050 INFO 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 01:45:13,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:13,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306199822] [2024-06-28 01:45:13,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306199822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:13,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:13,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:45:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415426466] [2024-06-28 01:45:13,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:13,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:45:13,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:13,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:45:13,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:45:13,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:45:13,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 164 transitions, 1650 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:13,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:13,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:45:13,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:14,846 INFO L124 PetriNetUnfolderBase]: 5602/8447 cut-off events. [2024-06-28 01:45:14,846 INFO L125 PetriNetUnfolderBase]: For 63783/63793 co-relation queries the response was YES. [2024-06-28 01:45:14,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39564 conditions, 8447 events. 5602/8447 cut-off events. For 63783/63793 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 49396 event pairs, 1235 based on Foata normal form. 12/8353 useless extension candidates. Maximal degree in co-relation 39514. Up to 7524 conditions per place. [2024-06-28 01:45:14,906 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 174 selfloop transitions, 41 changer transitions 0/223 dead transitions. [2024-06-28 01:45:14,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 223 transitions, 2282 flow [2024-06-28 01:45:14,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:45:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:45:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-28 01:45:14,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565476190476191 [2024-06-28 01:45:14,907 INFO L175 Difference]: Start difference. First operand has 117 places, 164 transitions, 1650 flow. Second operand 7 states and 187 transitions. [2024-06-28 01:45:14,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 223 transitions, 2282 flow [2024-06-28 01:45:14,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 223 transitions, 2202 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 01:45:14,993 INFO L231 Difference]: Finished difference. Result has 121 places, 164 transitions, 1662 flow [2024-06-28 01:45:14,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1662, PETRI_PLACES=121, PETRI_TRANSITIONS=164} [2024-06-28 01:45:14,994 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-28 01:45:14,995 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 164 transitions, 1662 flow [2024-06-28 01:45:14,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:14,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:14,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:14,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:45:14,995 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:14,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:14,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1419619136, now seen corresponding path program 1 times [2024-06-28 01:45:14,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:14,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700917767] [2024-06-28 01:45:14,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:14,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:16,859 INFO 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 01:45:16,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:16,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700917767] [2024-06-28 01:45:16,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700917767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:16,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:16,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:45:16,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876674495] [2024-06-28 01:45:16,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:16,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:45:16,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:16,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:45:16,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:45:16,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:45:16,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 164 transitions, 1662 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:16,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:16,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:45:16,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:18,360 INFO L124 PetriNetUnfolderBase]: 5263/8227 cut-off events. [2024-06-28 01:45:18,360 INFO L125 PetriNetUnfolderBase]: For 67630/67682 co-relation queries the response was YES. [2024-06-28 01:45:18,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37926 conditions, 8227 events. 5263/8227 cut-off events. For 67630/67682 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 50852 event pairs, 1910 based on Foata normal form. 29/8000 useless extension candidates. Maximal degree in co-relation 37874. Up to 7394 conditions per place. [2024-06-28 01:45:18,410 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 158 selfloop transitions, 14 changer transitions 0/190 dead transitions. [2024-06-28 01:45:18,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 190 transitions, 2108 flow [2024-06-28 01:45:18,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:45:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:45:18,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 01:45:18,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:45:18,412 INFO L175 Difference]: Start difference. First operand has 121 places, 164 transitions, 1662 flow. Second operand 6 states and 141 transitions. [2024-06-28 01:45:18,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 190 transitions, 2108 flow [2024-06-28 01:45:18,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 190 transitions, 2014 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:18,482 INFO L231 Difference]: Finished difference. Result has 121 places, 168 transitions, 1651 flow [2024-06-28 01:45:18,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1651, PETRI_PLACES=121, PETRI_TRANSITIONS=168} [2024-06-28 01:45:18,483 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-28 01:45:18,483 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 168 transitions, 1651 flow [2024-06-28 01:45:18,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:18,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:18,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:18,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:45:18,484 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:18,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:18,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1910575463, now seen corresponding path program 1 times [2024-06-28 01:45:18,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:18,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222016034] [2024-06-28 01:45:18,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:18,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:20,929 INFO 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 01:45:20,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:20,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222016034] [2024-06-28 01:45:20,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222016034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:20,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:20,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:20,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140370492] [2024-06-28 01:45:20,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:20,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:20,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:20,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:20,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:20,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:45:20,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 168 transitions, 1651 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:20,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:20,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:45:20,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:22,918 INFO L124 PetriNetUnfolderBase]: 6170/9289 cut-off events. [2024-06-28 01:45:22,919 INFO L125 PetriNetUnfolderBase]: For 89055/89059 co-relation queries the response was YES. [2024-06-28 01:45:22,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45529 conditions, 9289 events. 6170/9289 cut-off events. For 89055/89059 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 54582 event pairs, 849 based on Foata normal form. 16/9128 useless extension candidates. Maximal degree in co-relation 45476. Up to 5901 conditions per place. [2024-06-28 01:45:22,992 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 158 selfloop transitions, 87 changer transitions 0/253 dead transitions. [2024-06-28 01:45:22,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 253 transitions, 2581 flow [2024-06-28 01:45:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 228 transitions. [2024-06-28 01:45:22,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-28 01:45:22,994 INFO L175 Difference]: Start difference. First operand has 121 places, 168 transitions, 1651 flow. Second operand 8 states and 228 transitions. [2024-06-28 01:45:22,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 253 transitions, 2581 flow [2024-06-28 01:45:23,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 253 transitions, 2526 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:23,121 INFO L231 Difference]: Finished difference. Result has 125 places, 172 transitions, 1861 flow [2024-06-28 01:45:23,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1861, PETRI_PLACES=125, PETRI_TRANSITIONS=172} [2024-06-28 01:45:23,121 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-28 01:45:23,122 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 172 transitions, 1861 flow [2024-06-28 01:45:23,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:23,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:23,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:23,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:45:23,122 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:23,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:23,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1164281099, now seen corresponding path program 2 times [2024-06-28 01:45:23,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:23,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003992709] [2024-06-28 01:45:23,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:23,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:25,148 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 01:45:25,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:25,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003992709] [2024-06-28 01:45:25,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003992709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:25,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:25,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:25,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510555749] [2024-06-28 01:45:25,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:25,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:25,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:25,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:25,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:25,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:45:25,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 172 transitions, 1861 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:25,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:25,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:45:25,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:27,356 INFO L124 PetriNetUnfolderBase]: 6582/9858 cut-off events. [2024-06-28 01:45:27,357 INFO L125 PetriNetUnfolderBase]: For 111061/111069 co-relation queries the response was YES. [2024-06-28 01:45:27,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51280 conditions, 9858 events. 6582/9858 cut-off events. For 111061/111069 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 57988 event pairs, 1319 based on Foata normal form. 28/9725 useless extension candidates. Maximal degree in co-relation 51226. Up to 7484 conditions per place. [2024-06-28 01:45:27,433 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 157 selfloop transitions, 88 changer transitions 0/253 dead transitions. [2024-06-28 01:45:27,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 253 transitions, 2687 flow [2024-06-28 01:45:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:27,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-28 01:45:27,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5807291666666666 [2024-06-28 01:45:27,435 INFO L175 Difference]: Start difference. First operand has 125 places, 172 transitions, 1861 flow. Second operand 8 states and 223 transitions. [2024-06-28 01:45:27,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 253 transitions, 2687 flow [2024-06-28 01:45:27,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 253 transitions, 2571 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:27,574 INFO L231 Difference]: Finished difference. Result has 129 places, 175 transitions, 1994 flow [2024-06-28 01:45:27,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1994, PETRI_PLACES=129, PETRI_TRANSITIONS=175} [2024-06-28 01:45:27,575 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-28 01:45:27,575 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 175 transitions, 1994 flow [2024-06-28 01:45:27,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:27,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:27,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:27,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:45:27,576 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:27,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:27,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1164428969, now seen corresponding path program 3 times [2024-06-28 01:45:27,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:27,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400846928] [2024-06-28 01:45:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:27,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:29,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:29,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400846928] [2024-06-28 01:45:29,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400846928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:29,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:29,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:29,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139733200] [2024-06-28 01:45:29,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:29,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:29,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:29,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:29,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:29,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:45:29,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 175 transitions, 1994 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:29,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:29,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:45:29,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:32,184 INFO L124 PetriNetUnfolderBase]: 6848/10250 cut-off events. [2024-06-28 01:45:32,184 INFO L125 PetriNetUnfolderBase]: For 117092/117096 co-relation queries the response was YES. [2024-06-28 01:45:32,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54995 conditions, 10250 events. 6848/10250 cut-off events. For 117092/117096 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 60595 event pairs, 1363 based on Foata normal form. 16/10029 useless extension candidates. Maximal degree in co-relation 54939. Up to 7528 conditions per place. [2024-06-28 01:45:32,257 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 158 selfloop transitions, 91 changer transitions 0/257 dead transitions. [2024-06-28 01:45:32,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 257 transitions, 2820 flow [2024-06-28 01:45:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-06-28 01:45:32,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911458333333334 [2024-06-28 01:45:32,266 INFO L175 Difference]: Start difference. First operand has 129 places, 175 transitions, 1994 flow. Second operand 8 states and 227 transitions. [2024-06-28 01:45:32,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 257 transitions, 2820 flow [2024-06-28 01:45:32,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 257 transitions, 2631 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:32,453 INFO L231 Difference]: Finished difference. Result has 131 places, 177 transitions, 2042 flow [2024-06-28 01:45:32,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1805, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2042, PETRI_PLACES=131, PETRI_TRANSITIONS=177} [2024-06-28 01:45:32,455 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-06-28 01:45:32,455 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 177 transitions, 2042 flow [2024-06-28 01:45:32,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:32,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:32,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:32,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:45:32,455 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:32,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:32,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1885369995, now seen corresponding path program 4 times [2024-06-28 01:45:32,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:32,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901903242] [2024-06-28 01:45:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:32,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:34,809 INFO 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 01:45:34,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:34,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901903242] [2024-06-28 01:45:34,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901903242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:34,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:34,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:34,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551554276] [2024-06-28 01:45:34,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:34,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:34,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:34,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:34,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:34,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:45:34,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 177 transitions, 2042 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:34,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:34,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:45:34,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:37,129 INFO L124 PetriNetUnfolderBase]: 7333/11037 cut-off events. [2024-06-28 01:45:37,130 INFO L125 PetriNetUnfolderBase]: For 138799/138809 co-relation queries the response was YES. [2024-06-28 01:45:37,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59902 conditions, 11037 events. 7333/11037 cut-off events. For 138799/138809 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 66568 event pairs, 1043 based on Foata normal form. 24/10832 useless extension candidates. Maximal degree in co-relation 59845. Up to 7976 conditions per place. [2024-06-28 01:45:37,222 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 166 selfloop transitions, 93 changer transitions 0/267 dead transitions. [2024-06-28 01:45:37,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 267 transitions, 3046 flow [2024-06-28 01:45:37,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 233 transitions. [2024-06-28 01:45:37,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6067708333333334 [2024-06-28 01:45:37,224 INFO L175 Difference]: Start difference. First operand has 131 places, 177 transitions, 2042 flow. Second operand 8 states and 233 transitions. [2024-06-28 01:45:37,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 267 transitions, 3046 flow [2024-06-28 01:45:37,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 267 transitions, 2847 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:37,448 INFO L231 Difference]: Finished difference. Result has 133 places, 181 transitions, 2136 flow [2024-06-28 01:45:37,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2136, PETRI_PLACES=133, PETRI_TRANSITIONS=181} [2024-06-28 01:45:37,449 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2024-06-28 01:45:37,449 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 181 transitions, 2136 flow [2024-06-28 01:45:37,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:37,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:37,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:45:37,450 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:37,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1757526817, now seen corresponding path program 5 times [2024-06-28 01:45:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:37,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429498131] [2024-06-28 01:45:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:39,906 INFO 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 01:45:39,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:39,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429498131] [2024-06-28 01:45:39,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429498131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:39,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:39,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:39,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519454778] [2024-06-28 01:45:39,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:39,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:39,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:39,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:39,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:39,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:45:39,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 181 transitions, 2136 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:39,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:39,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:45:39,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:42,593 INFO L124 PetriNetUnfolderBase]: 7672/11446 cut-off events. [2024-06-28 01:45:42,593 INFO L125 PetriNetUnfolderBase]: For 150949/150957 co-relation queries the response was YES. [2024-06-28 01:45:42,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63125 conditions, 11446 events. 7672/11446 cut-off events. For 150949/150957 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 68331 event pairs, 1498 based on Foata normal form. 24/11169 useless extension candidates. Maximal degree in co-relation 63067. Up to 9109 conditions per place. [2024-06-28 01:45:42,686 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 181 selfloop transitions, 87 changer transitions 0/276 dead transitions. [2024-06-28 01:45:42,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 276 transitions, 3066 flow [2024-06-28 01:45:42,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-28 01:45:42,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-06-28 01:45:42,688 INFO L175 Difference]: Start difference. First operand has 133 places, 181 transitions, 2136 flow. Second operand 9 states and 249 transitions. [2024-06-28 01:45:42,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 276 transitions, 3066 flow [2024-06-28 01:45:42,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 276 transitions, 2934 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:42,917 INFO L231 Difference]: Finished difference. Result has 138 places, 183 transitions, 2244 flow [2024-06-28 01:45:42,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2244, PETRI_PLACES=138, PETRI_TRANSITIONS=183} [2024-06-28 01:45:42,918 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 84 predicate places. [2024-06-28 01:45:42,918 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 183 transitions, 2244 flow [2024-06-28 01:45:42,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:42,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:42,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:42,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:45:42,919 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:42,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:42,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1885222125, now seen corresponding path program 6 times [2024-06-28 01:45:42,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:42,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008878494] [2024-06-28 01:45:42,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:42,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:45,022 INFO 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 01:45:45,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:45,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008878494] [2024-06-28 01:45:45,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008878494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:45,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:45,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:45:45,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640760869] [2024-06-28 01:45:45,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:45,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:45:45,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:45,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:45:45,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:45:45,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:45:45,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 183 transitions, 2244 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:45,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:45,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:45:45,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:47,776 INFO L124 PetriNetUnfolderBase]: 8011/11961 cut-off events. [2024-06-28 01:45:47,776 INFO L125 PetriNetUnfolderBase]: For 163773/163783 co-relation queries the response was YES. [2024-06-28 01:45:47,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67333 conditions, 11961 events. 8011/11961 cut-off events. For 163773/163783 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 71963 event pairs, 1506 based on Foata normal form. 28/11616 useless extension candidates. Maximal degree in co-relation 67273. Up to 9578 conditions per place. [2024-06-28 01:45:47,874 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 172 selfloop transitions, 88 changer transitions 0/268 dead transitions. [2024-06-28 01:45:47,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 268 transitions, 3118 flow [2024-06-28 01:45:47,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:45:47,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:45:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-06-28 01:45:47,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911458333333334 [2024-06-28 01:45:47,876 INFO L175 Difference]: Start difference. First operand has 138 places, 183 transitions, 2244 flow. Second operand 8 states and 227 transitions. [2024-06-28 01:45:47,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 268 transitions, 3118 flow [2024-06-28 01:45:48,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 268 transitions, 2930 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:48,229 INFO L231 Difference]: Finished difference. Result has 139 places, 185 transitions, 2300 flow [2024-06-28 01:45:48,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2300, PETRI_PLACES=139, PETRI_TRANSITIONS=185} [2024-06-28 01:45:48,230 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2024-06-28 01:45:48,230 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 185 transitions, 2300 flow [2024-06-28 01:45:48,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:48,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:48,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:48,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:45:48,230 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:48,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:48,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1070944106, now seen corresponding path program 1 times [2024-06-28 01:45:48,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:48,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184291511] [2024-06-28 01:45:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:48,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:49,946 INFO 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 01:45:49,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:49,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184291511] [2024-06-28 01:45:49,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184291511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:49,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:49,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:45:49,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263337653] [2024-06-28 01:45:49,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:49,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:45:49,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:49,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:45:49,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:45:49,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:45:49,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 185 transitions, 2300 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:49,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:49,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:45:49,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:52,091 INFO L124 PetriNetUnfolderBase]: 7642/11800 cut-off events. [2024-06-28 01:45:52,092 INFO L125 PetriNetUnfolderBase]: For 162831/162909 co-relation queries the response was YES. [2024-06-28 01:45:52,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65240 conditions, 11800 events. 7642/11800 cut-off events. For 162831/162909 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 75153 event pairs, 2490 based on Foata normal form. 57/11283 useless extension candidates. Maximal degree in co-relation 65179. Up to 10636 conditions per place. [2024-06-28 01:45:52,203 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 195 selfloop transitions, 15 changer transitions 0/228 dead transitions. [2024-06-28 01:45:52,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 228 transitions, 2946 flow [2024-06-28 01:45:52,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:45:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:45:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 01:45:52,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:45:52,204 INFO L175 Difference]: Start difference. First operand has 139 places, 185 transitions, 2300 flow. Second operand 6 states and 150 transitions. [2024-06-28 01:45:52,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 228 transitions, 2946 flow [2024-06-28 01:45:52,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 228 transitions, 2746 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:52,455 INFO L231 Difference]: Finished difference. Result has 140 places, 194 transitions, 2274 flow [2024-06-28 01:45:52,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2274, PETRI_PLACES=140, PETRI_TRANSITIONS=194} [2024-06-28 01:45:52,456 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-28 01:45:52,456 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 194 transitions, 2274 flow [2024-06-28 01:45:52,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:52,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:52,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:52,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:45:52,457 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:52,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:52,457 INFO L85 PathProgramCache]: Analyzing trace with hash 825413087, now seen corresponding path program 7 times [2024-06-28 01:45:52,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:52,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794049915] [2024-06-28 01:45:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:54,896 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 01:45:54,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:54,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794049915] [2024-06-28 01:45:54,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794049915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:54,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:54,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:54,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396211757] [2024-06-28 01:45:54,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:54,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:54,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:54,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:54,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:54,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:45:54,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 194 transitions, 2274 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:54,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:54,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:45:54,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:58,004 INFO L124 PetriNetUnfolderBase]: 8376/12848 cut-off events. [2024-06-28 01:45:58,004 INFO L125 PetriNetUnfolderBase]: For 171644/171648 co-relation queries the response was YES. [2024-06-28 01:45:58,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70184 conditions, 12848 events. 8376/12848 cut-off events. For 171644/171648 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 80501 event pairs, 2031 based on Foata normal form. 22/12327 useless extension candidates. Maximal degree in co-relation 70121. Up to 10088 conditions per place. [2024-06-28 01:45:58,122 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 186 selfloop transitions, 93 changer transitions 0/287 dead transitions. [2024-06-28 01:45:58,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 287 transitions, 3254 flow [2024-06-28 01:45:58,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:58,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:58,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-28 01:45:58,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5717592592592593 [2024-06-28 01:45:58,126 INFO L175 Difference]: Start difference. First operand has 140 places, 194 transitions, 2274 flow. Second operand 9 states and 247 transitions. [2024-06-28 01:45:58,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 287 transitions, 3254 flow [2024-06-28 01:45:58,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 287 transitions, 3210 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 01:45:58,419 INFO L231 Difference]: Finished difference. Result has 146 places, 196 transitions, 2488 flow [2024-06-28 01:45:58,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2230, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2488, PETRI_PLACES=146, PETRI_TRANSITIONS=196} [2024-06-28 01:45:58,420 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-28 01:45:58,420 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 196 transitions, 2488 flow [2024-06-28 01:45:58,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:58,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:58,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:58,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:45:58,421 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:45:58,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:58,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1069054853, now seen corresponding path program 8 times [2024-06-28 01:45:58,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:58,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814308412] [2024-06-28 01:45:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:58,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:00,935 INFO 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 01:46:00,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:00,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814308412] [2024-06-28 01:46:00,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814308412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:00,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:00,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:00,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813457368] [2024-06-28 01:46:00,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:00,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:00,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:00,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:00,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:00,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:46:00,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 196 transitions, 2488 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:00,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:00,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:46:00,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:03,818 INFO L124 PetriNetUnfolderBase]: 8330/12883 cut-off events. [2024-06-28 01:46:03,819 INFO L125 PetriNetUnfolderBase]: For 179115/179123 co-relation queries the response was YES. [2024-06-28 01:46:03,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71323 conditions, 12883 events. 8330/12883 cut-off events. For 179115/179123 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 81824 event pairs, 1950 based on Foata normal form. 26/12366 useless extension candidates. Maximal degree in co-relation 71259. Up to 10022 conditions per place. [2024-06-28 01:46:03,927 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 199 selfloop transitions, 95 changer transitions 0/302 dead transitions. [2024-06-28 01:46:03,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 302 transitions, 3502 flow [2024-06-28 01:46:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:03,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:03,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-06-28 01:46:03,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-06-28 01:46:03,929 INFO L175 Difference]: Start difference. First operand has 146 places, 196 transitions, 2488 flow. Second operand 10 states and 273 transitions. [2024-06-28 01:46:03,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 302 transitions, 3502 flow [2024-06-28 01:46:04,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 302 transitions, 3282 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:04,296 INFO L231 Difference]: Finished difference. Result has 149 places, 196 transitions, 2468 flow [2024-06-28 01:46:04,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2268, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2468, PETRI_PLACES=149, PETRI_TRANSITIONS=196} [2024-06-28 01:46:04,297 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-28 01:46:04,297 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 196 transitions, 2468 flow [2024-06-28 01:46:04,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:04,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:04,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:04,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:46:04,298 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:04,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:04,298 INFO L85 PathProgramCache]: Analyzing trace with hash 119937140, now seen corresponding path program 1 times [2024-06-28 01:46:04,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:04,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670486940] [2024-06-28 01:46:04,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:04,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:07,271 INFO 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 01:46:07,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670486940] [2024-06-28 01:46:07,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670486940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:07,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:07,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:07,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572895351] [2024-06-28 01:46:07,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:07,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:07,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:07,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:07,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:07,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:46:07,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 196 transitions, 2468 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:07,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:07,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:46:07,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:10,093 INFO L124 PetriNetUnfolderBase]: 8467/12966 cut-off events. [2024-06-28 01:46:10,093 INFO L125 PetriNetUnfolderBase]: For 164211/164219 co-relation queries the response was YES. [2024-06-28 01:46:10,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71351 conditions, 12966 events. 8467/12966 cut-off events. For 164211/164219 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 81217 event pairs, 1946 based on Foata normal form. 10/12441 useless extension candidates. Maximal degree in co-relation 71286. Up to 10463 conditions per place. [2024-06-28 01:46:10,222 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 181 selfloop transitions, 117 changer transitions 0/306 dead transitions. [2024-06-28 01:46:10,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 306 transitions, 3783 flow [2024-06-28 01:46:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-28 01:46:10,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-06-28 01:46:10,223 INFO L175 Difference]: Start difference. First operand has 149 places, 196 transitions, 2468 flow. Second operand 9 states and 242 transitions. [2024-06-28 01:46:10,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 306 transitions, 3783 flow [2024-06-28 01:46:10,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 306 transitions, 3507 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:10,551 INFO L231 Difference]: Finished difference. Result has 151 places, 221 transitions, 2878 flow [2024-06-28 01:46:10,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2878, PETRI_PLACES=151, PETRI_TRANSITIONS=221} [2024-06-28 01:46:10,552 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-28 01:46:10,552 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 221 transitions, 2878 flow [2024-06-28 01:46:10,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:10,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:10,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:10,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:46:10,552 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:10,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:10,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1496021120, now seen corresponding path program 2 times [2024-06-28 01:46:10,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:10,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226716658] [2024-06-28 01:46:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:10,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:13,008 INFO 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 01:46:13,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:13,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226716658] [2024-06-28 01:46:13,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226716658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:13,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:13,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:13,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983362017] [2024-06-28 01:46:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:13,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:13,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:13,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:13,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:13,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:46:13,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 221 transitions, 2878 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:13,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:13,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:46:13,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:15,888 INFO L124 PetriNetUnfolderBase]: 8430/12947 cut-off events. [2024-06-28 01:46:15,888 INFO L125 PetriNetUnfolderBase]: For 159367/159375 co-relation queries the response was YES. [2024-06-28 01:46:15,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70958 conditions, 12947 events. 8430/12947 cut-off events. For 159367/159375 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 81523 event pairs, 1694 based on Foata normal form. 162/12598 useless extension candidates. Maximal degree in co-relation 70890. Up to 9882 conditions per place. [2024-06-28 01:46:16,012 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 184 selfloop transitions, 124 changer transitions 0/316 dead transitions. [2024-06-28 01:46:16,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 316 transitions, 4055 flow [2024-06-28 01:46:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-28 01:46:16,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-06-28 01:46:16,014 INFO L175 Difference]: Start difference. First operand has 151 places, 221 transitions, 2878 flow. Second operand 9 states and 249 transitions. [2024-06-28 01:46:16,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 316 transitions, 4055 flow [2024-06-28 01:46:16,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 316 transitions, 3856 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 01:46:16,380 INFO L231 Difference]: Finished difference. Result has 157 places, 226 transitions, 3074 flow [2024-06-28 01:46:16,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2646, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3074, PETRI_PLACES=157, PETRI_TRANSITIONS=226} [2024-06-28 01:46:16,380 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-28 01:46:16,380 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 226 transitions, 3074 flow [2024-06-28 01:46:16,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:16,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:16,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:16,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:46:16,381 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:16,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash -699370374, now seen corresponding path program 3 times [2024-06-28 01:46:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:16,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848614173] [2024-06-28 01:46:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:18,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848614173] [2024-06-28 01:46:18,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848614173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:18,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:18,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:18,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715669846] [2024-06-28 01:46:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:18,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:18,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:18,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:18,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:18,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:46:18,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 226 transitions, 3074 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:18,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:18,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:46:18,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:21,877 INFO L124 PetriNetUnfolderBase]: 8485/13068 cut-off events. [2024-06-28 01:46:21,877 INFO L125 PetriNetUnfolderBase]: For 169257/169265 co-relation queries the response was YES. [2024-06-28 01:46:21,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72756 conditions, 13068 events. 8485/13068 cut-off events. For 169257/169265 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 82617 event pairs, 1968 based on Foata normal form. 10/12553 useless extension candidates. Maximal degree in co-relation 72686. Up to 10541 conditions per place. [2024-06-28 01:46:21,997 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 188 selfloop transitions, 117 changer transitions 0/313 dead transitions. [2024-06-28 01:46:21,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 313 transitions, 4076 flow [2024-06-28 01:46:21,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:21,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-28 01:46:21,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578703703703703 [2024-06-28 01:46:21,998 INFO L175 Difference]: Start difference. First operand has 157 places, 226 transitions, 3074 flow. Second operand 9 states and 241 transitions. [2024-06-28 01:46:21,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 313 transitions, 4076 flow [2024-06-28 01:46:22,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 313 transitions, 3798 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:22,346 INFO L231 Difference]: Finished difference. Result has 161 places, 229 transitions, 3115 flow [2024-06-28 01:46:22,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3115, PETRI_PLACES=161, PETRI_TRANSITIONS=229} [2024-06-28 01:46:22,347 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-28 01:46:22,347 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 229 transitions, 3115 flow [2024-06-28 01:46:22,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:22,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:22,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:22,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:46:22,348 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:22,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash 825628568, now seen corresponding path program 4 times [2024-06-28 01:46:22,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:22,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745051645] [2024-06-28 01:46:22,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:22,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:24,912 INFO 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 01:46:24,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:24,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745051645] [2024-06-28 01:46:24,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745051645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:24,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:24,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:46:24,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523655158] [2024-06-28 01:46:24,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:24,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:46:24,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:46:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:46:24,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:46:24,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 229 transitions, 3115 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:24,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:24,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:46:24,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:27,867 INFO L124 PetriNetUnfolderBase]: 8477/13057 cut-off events. [2024-06-28 01:46:27,867 INFO L125 PetriNetUnfolderBase]: For 173429/173433 co-relation queries the response was YES. [2024-06-28 01:46:27,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72259 conditions, 13057 events. 8477/13057 cut-off events. For 173429/173433 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 82557 event pairs, 2057 based on Foata normal form. 6/12524 useless extension candidates. Maximal degree in co-relation 72187. Up to 10529 conditions per place. [2024-06-28 01:46:27,997 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 190 selfloop transitions, 115 changer transitions 0/313 dead transitions. [2024-06-28 01:46:27,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 313 transitions, 4065 flow [2024-06-28 01:46:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:46:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:46:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-28 01:46:28,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578703703703703 [2024-06-28 01:46:28,001 INFO L175 Difference]: Start difference. First operand has 161 places, 229 transitions, 3115 flow. Second operand 9 states and 241 transitions. [2024-06-28 01:46:28,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 313 transitions, 4065 flow [2024-06-28 01:46:28,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 313 transitions, 3799 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:28,351 INFO L231 Difference]: Finished difference. Result has 165 places, 230 transitions, 3104 flow [2024-06-28 01:46:28,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2849, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3104, PETRI_PLACES=165, PETRI_TRANSITIONS=230} [2024-06-28 01:46:28,351 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 111 predicate places. [2024-06-28 01:46:28,351 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 230 transitions, 3104 flow [2024-06-28 01:46:28,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:28,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:28,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:28,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:46:28,352 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:28,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:28,352 INFO L85 PathProgramCache]: Analyzing trace with hash -365893436, now seen corresponding path program 2 times [2024-06-28 01:46:28,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:28,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446408121] [2024-06-28 01:46:28,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:28,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:30,391 INFO 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 01:46:30,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:30,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446408121] [2024-06-28 01:46:30,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446408121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:30,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:30,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:46:30,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602236156] [2024-06-28 01:46:30,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:30,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:46:30,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:30,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:46:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:46:30,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:46:30,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 230 transitions, 3104 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:30,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:30,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:46:30,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:32,584 INFO L124 PetriNetUnfolderBase]: 8098/12585 cut-off events. [2024-06-28 01:46:32,584 INFO L125 PetriNetUnfolderBase]: For 180450/180591 co-relation queries the response was YES. [2024-06-28 01:46:32,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69681 conditions, 12585 events. 8098/12585 cut-off events. For 180450/180591 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 81783 event pairs, 2504 based on Foata normal form. 118/12112 useless extension candidates. Maximal degree in co-relation 69607. Up to 11337 conditions per place. [2024-06-28 01:46:32,690 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 230 selfloop transitions, 15 changer transitions 0/263 dead transitions. [2024-06-28 01:46:32,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 263 transitions, 3760 flow [2024-06-28 01:46:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:46:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:46:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:46:32,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:46:32,692 INFO L175 Difference]: Start difference. First operand has 165 places, 230 transitions, 3104 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:46:32,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 263 transitions, 3760 flow [2024-06-28 01:46:32,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 263 transitions, 3516 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:32,996 INFO L231 Difference]: Finished difference. Result has 166 places, 236 transitions, 2990 flow [2024-06-28 01:46:32,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2860, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2990, PETRI_PLACES=166, PETRI_TRANSITIONS=236} [2024-06-28 01:46:32,996 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-28 01:46:32,997 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 236 transitions, 2990 flow [2024-06-28 01:46:32,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:32,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:32,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:32,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:46:32,997 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:32,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:32,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1065224234, now seen corresponding path program 1 times [2024-06-28 01:46:32,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:32,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114415344] [2024-06-28 01:46:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:32,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:34,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:34,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114415344] [2024-06-28 01:46:34,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114415344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:34,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:34,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:46:34,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537197203] [2024-06-28 01:46:34,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:34,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:46:34,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:34,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:46:34,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:46:34,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:46:34,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 236 transitions, 2990 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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 01:46:34,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:34,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:46:34,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:36,679 INFO L124 PetriNetUnfolderBase]: 8511/13165 cut-off events. [2024-06-28 01:46:36,679 INFO L125 PetriNetUnfolderBase]: For 179743/179745 co-relation queries the response was YES. [2024-06-28 01:46:36,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71943 conditions, 13165 events. 8511/13165 cut-off events. For 179743/179745 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 84196 event pairs, 2617 based on Foata normal form. 1/12630 useless extension candidates. Maximal degree in co-relation 71867. Up to 12033 conditions per place. [2024-06-28 01:46:36,811 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 247 selfloop transitions, 14 changer transitions 0/269 dead transitions. [2024-06-28 01:46:36,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 269 transitions, 3686 flow [2024-06-28 01:46:36,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:46:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:46:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:46:36,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-28 01:46:36,822 INFO L175 Difference]: Start difference. First operand has 166 places, 236 transitions, 2990 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:46:36,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 269 transitions, 3686 flow [2024-06-28 01:46:37,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 269 transitions, 3627 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-28 01:46:37,183 INFO L231 Difference]: Finished difference. Result has 171 places, 244 transitions, 3089 flow [2024-06-28 01:46:37,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2931, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3089, PETRI_PLACES=171, PETRI_TRANSITIONS=244} [2024-06-28 01:46:37,183 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-28 01:46:37,183 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 244 transitions, 3089 flow [2024-06-28 01:46:37,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 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 01:46:37,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:37,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:37,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:46:37,184 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:37,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:37,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1058528234, now seen corresponding path program 2 times [2024-06-28 01:46:37,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65570336] [2024-06-28 01:46:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:37,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:38,619 INFO 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 01:46:38,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:38,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65570336] [2024-06-28 01:46:38,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65570336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:38,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:38,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:46:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394810272] [2024-06-28 01:46:38,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:38,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:46:38,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:38,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:46:38,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:46:38,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:46:38,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 244 transitions, 3089 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:38,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:38,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:46:38,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:41,014 INFO L124 PetriNetUnfolderBase]: 8511/13166 cut-off events. [2024-06-28 01:46:41,015 INFO L125 PetriNetUnfolderBase]: For 188413/188423 co-relation queries the response was YES. [2024-06-28 01:46:41,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73363 conditions, 13166 events. 8511/13166 cut-off events. For 188413/188423 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 84215 event pairs, 2619 based on Foata normal form. 9/12639 useless extension candidates. Maximal degree in co-relation 73284. Up to 12012 conditions per place. [2024-06-28 01:46:41,122 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 241 selfloop transitions, 21 changer transitions 0/270 dead transitions. [2024-06-28 01:46:41,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 270 transitions, 3741 flow [2024-06-28 01:46:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:46:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:46:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:46:41,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:46:41,124 INFO L175 Difference]: Start difference. First operand has 171 places, 244 transitions, 3089 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:46:41,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 270 transitions, 3741 flow [2024-06-28 01:46:41,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 270 transitions, 3677 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 01:46:41,457 INFO L231 Difference]: Finished difference. Result has 174 places, 248 transitions, 3140 flow [2024-06-28 01:46:41,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3025, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3140, PETRI_PLACES=174, PETRI_TRANSITIONS=248} [2024-06-28 01:46:41,458 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 120 predicate places. [2024-06-28 01:46:41,458 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 248 transitions, 3140 flow [2024-06-28 01:46:41,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:41,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:41,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:41,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:46:41,459 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:41,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:41,459 INFO L85 PathProgramCache]: Analyzing trace with hash -365877564, now seen corresponding path program 1 times [2024-06-28 01:46:41,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:41,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987761984] [2024-06-28 01:46:41,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:41,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:43,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:43,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:43,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987761984] [2024-06-28 01:46:43,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987761984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:43,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:43,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:46:43,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661835081] [2024-06-28 01:46:43,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:43,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:46:43,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:43,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:46:43,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:46:43,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:46:43,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 248 transitions, 3140 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:43,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:43,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:46:43,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:45,897 INFO L124 PetriNetUnfolderBase]: 8155/12631 cut-off events. [2024-06-28 01:46:45,898 INFO L125 PetriNetUnfolderBase]: For 198799/198949 co-relation queries the response was YES. [2024-06-28 01:46:45,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71664 conditions, 12631 events. 8155/12631 cut-off events. For 198799/198949 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 81568 event pairs, 2466 based on Foata normal form. 128/12168 useless extension candidates. Maximal degree in co-relation 71584. Up to 11343 conditions per place. [2024-06-28 01:46:46,030 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 241 selfloop transitions, 17 changer transitions 0/279 dead transitions. [2024-06-28 01:46:46,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 279 transitions, 3806 flow [2024-06-28 01:46:46,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:46:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:46:46,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:46:46,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 01:46:46,031 INFO L175 Difference]: Start difference. First operand has 174 places, 248 transitions, 3140 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:46:46,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 279 transitions, 3806 flow [2024-06-28 01:46:46,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 279 transitions, 3719 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 01:46:46,476 INFO L231 Difference]: Finished difference. Result has 177 places, 251 transitions, 3159 flow [2024-06-28 01:46:46,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3159, PETRI_PLACES=177, PETRI_TRANSITIONS=251} [2024-06-28 01:46:46,477 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 123 predicate places. [2024-06-28 01:46:46,477 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 251 transitions, 3159 flow [2024-06-28 01:46:46,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:46,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:46,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:46,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:46:46,478 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:46,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:46,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1159530581, now seen corresponding path program 1 times [2024-06-28 01:46:46,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:46,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509158553] [2024-06-28 01:46:46,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:46,598 INFO 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 01:46:46,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:46,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509158553] [2024-06-28 01:46:46,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509158553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:46,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:46,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:46:46,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551361782] [2024-06-28 01:46:46,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:46,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:46:46,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:46,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:46:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:46:46,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-06-28 01:46:46,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 251 transitions, 3159 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:46,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:46,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-06-28 01:46:46,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:48,028 INFO L124 PetriNetUnfolderBase]: 5035/8437 cut-off events. [2024-06-28 01:46:48,028 INFO L125 PetriNetUnfolderBase]: For 207449/208801 co-relation queries the response was YES. [2024-06-28 01:46:48,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48806 conditions, 8437 events. 5035/8437 cut-off events. For 207449/208801 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 60139 event pairs, 1421 based on Foata normal form. 765/8408 useless extension candidates. Maximal degree in co-relation 48726. Up to 3858 conditions per place. [2024-06-28 01:46:48,122 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 81 selfloop transitions, 66 changer transitions 0/250 dead transitions. [2024-06-28 01:46:48,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 250 transitions, 3368 flow [2024-06-28 01:46:48,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:46:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:46:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 01:46:48,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597222222222222 [2024-06-28 01:46:48,123 INFO L175 Difference]: Start difference. First operand has 177 places, 251 transitions, 3159 flow. Second operand 3 states and 95 transitions. [2024-06-28 01:46:48,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 250 transitions, 3368 flow [2024-06-28 01:46:48,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 250 transitions, 3254 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:48,399 INFO L231 Difference]: Finished difference. Result has 172 places, 238 transitions, 2966 flow [2024-06-28 01:46:48,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2966, PETRI_PLACES=172, PETRI_TRANSITIONS=238} [2024-06-28 01:46:48,400 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 118 predicate places. [2024-06-28 01:46:48,400 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 238 transitions, 2966 flow [2024-06-28 01:46:48,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:48,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:48,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:48,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:46:48,401 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:48,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:48,401 INFO L85 PathProgramCache]: Analyzing trace with hash -851868039, now seen corresponding path program 1 times [2024-06-28 01:46:48,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:48,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638469250] [2024-06-28 01:46:48,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:48,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:51,642 INFO 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 01:46:51,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:51,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638469250] [2024-06-28 01:46:51,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638469250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:51,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:51,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:51,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241704274] [2024-06-28 01:46:51,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:51,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:51,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:51,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:51,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:46:51,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 238 transitions, 2966 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:51,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:51,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:46:51,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:55,214 INFO L124 PetriNetUnfolderBase]: 7892/12796 cut-off events. [2024-06-28 01:46:55,214 INFO L125 PetriNetUnfolderBase]: For 198618/198626 co-relation queries the response was YES. [2024-06-28 01:46:55,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69698 conditions, 12796 events. 7892/12796 cut-off events. For 198618/198626 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 87333 event pairs, 2055 based on Foata normal form. 18/12539 useless extension candidates. Maximal degree in co-relation 69619. Up to 9537 conditions per place. [2024-06-28 01:46:55,341 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 243 selfloop transitions, 128 changer transitions 11/390 dead transitions. [2024-06-28 01:46:55,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 390 transitions, 4517 flow [2024-06-28 01:46:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:46:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:46:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 350 transitions. [2024-06-28 01:46:55,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5608974358974359 [2024-06-28 01:46:55,343 INFO L175 Difference]: Start difference. First operand has 172 places, 238 transitions, 2966 flow. Second operand 13 states and 350 transitions. [2024-06-28 01:46:55,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 390 transitions, 4517 flow [2024-06-28 01:46:55,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 390 transitions, 4377 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:46:55,817 INFO L231 Difference]: Finished difference. Result has 185 places, 246 transitions, 3243 flow [2024-06-28 01:46:55,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3243, PETRI_PLACES=185, PETRI_TRANSITIONS=246} [2024-06-28 01:46:55,818 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 131 predicate places. [2024-06-28 01:46:55,818 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 246 transitions, 3243 flow [2024-06-28 01:46:55,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:55,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:55,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:55,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:46:55,819 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:46:55,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:55,819 INFO L85 PathProgramCache]: Analyzing trace with hash 569101579, now seen corresponding path program 1 times [2024-06-28 01:46:55,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:55,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650916558] [2024-06-28 01:46:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:55,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:57,818 INFO 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 01:46:57,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:57,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650916558] [2024-06-28 01:46:57,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650916558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:57,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:57,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:46:57,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257087769] [2024-06-28 01:46:57,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:57,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:46:57,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:57,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:46:57,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:46:57,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:46:57,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 246 transitions, 3243 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:46:57,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:57,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:46:57,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:00,235 INFO L124 PetriNetUnfolderBase]: 7180/11707 cut-off events. [2024-06-28 01:47:00,236 INFO L125 PetriNetUnfolderBase]: For 188190/188222 co-relation queries the response was YES. [2024-06-28 01:47:00,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65473 conditions, 11707 events. 7180/11707 cut-off events. For 188190/188222 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 80133 event pairs, 1967 based on Foata normal form. 34/11479 useless extension candidates. Maximal degree in co-relation 65390. Up to 10212 conditions per place. [2024-06-28 01:47:00,348 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 271 selfloop transitions, 40 changer transitions 0/319 dead transitions. [2024-06-28 01:47:00,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 319 transitions, 4422 flow [2024-06-28 01:47:00,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:47:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:47:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:47:00,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-28 01:47:00,349 INFO L175 Difference]: Start difference. First operand has 185 places, 246 transitions, 3243 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:47:00,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 319 transitions, 4422 flow [2024-06-28 01:47:00,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 319 transitions, 4123 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:00,810 INFO L231 Difference]: Finished difference. Result has 184 places, 273 transitions, 3514 flow [2024-06-28 01:47:00,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3514, PETRI_PLACES=184, PETRI_TRANSITIONS=273} [2024-06-28 01:47:00,810 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 130 predicate places. [2024-06-28 01:47:00,810 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 273 transitions, 3514 flow [2024-06-28 01:47:00,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:47:00,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:00,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:00,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:47:00,811 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:47:00,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:00,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1344561713, now seen corresponding path program 2 times [2024-06-28 01:47:00,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:00,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645548554] [2024-06-28 01:47:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:00,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:03,706 INFO 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 01:47:03,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:03,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645548554] [2024-06-28 01:47:03,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645548554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:03,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:03,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:03,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765897471] [2024-06-28 01:47:03,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:03,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:03,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:03,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:03,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:03,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:47:03,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 273 transitions, 3514 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:03,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:03,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:47:03,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:07,161 INFO L124 PetriNetUnfolderBase]: 7432/12223 cut-off events. [2024-06-28 01:47:07,161 INFO L125 PetriNetUnfolderBase]: For 203518/203530 co-relation queries the response was YES. [2024-06-28 01:47:07,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68441 conditions, 12223 events. 7432/12223 cut-off events. For 203518/203530 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 84510 event pairs, 1884 based on Foata normal form. 20/11956 useless extension candidates. Maximal degree in co-relation 68355. Up to 8800 conditions per place. [2024-06-28 01:47:07,300 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 253 selfloop transitions, 143 changer transitions 0/404 dead transitions. [2024-06-28 01:47:07,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 404 transitions, 5020 flow [2024-06-28 01:47:07,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:47:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:47:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 315 transitions. [2024-06-28 01:47:07,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 01:47:07,324 INFO L175 Difference]: Start difference. First operand has 184 places, 273 transitions, 3514 flow. Second operand 12 states and 315 transitions. [2024-06-28 01:47:07,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 404 transitions, 5020 flow [2024-06-28 01:47:07,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 404 transitions, 4924 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:47:07,880 INFO L231 Difference]: Finished difference. Result has 196 places, 281 transitions, 3871 flow [2024-06-28 01:47:07,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3423, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3871, PETRI_PLACES=196, PETRI_TRANSITIONS=281} [2024-06-28 01:47:07,881 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 142 predicate places. [2024-06-28 01:47:07,881 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 281 transitions, 3871 flow [2024-06-28 01:47:07,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:07,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:07,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:07,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:47:07,882 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:47:07,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:07,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1160472993, now seen corresponding path program 1 times [2024-06-28 01:47:07,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:07,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261379215] [2024-06-28 01:47:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:07,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:09,869 INFO 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 01:47:09,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:09,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261379215] [2024-06-28 01:47:09,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261379215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:09,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:09,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:47:09,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552875947] [2024-06-28 01:47:09,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:09,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:47:09,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:09,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:47:09,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:47:09,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:47:09,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 281 transitions, 3871 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:09,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:09,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:47:09,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:12,276 INFO L124 PetriNetUnfolderBase]: 7162/11806 cut-off events. [2024-06-28 01:47:12,277 INFO L125 PetriNetUnfolderBase]: For 213977/214100 co-relation queries the response was YES. [2024-06-28 01:47:12,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68805 conditions, 11806 events. 7162/11806 cut-off events. For 213977/214100 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 82768 event pairs, 2060 based on Foata normal form. 110/11587 useless extension candidates. Maximal degree in co-relation 68715. Up to 10290 conditions per place. [2024-06-28 01:47:12,400 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 279 selfloop transitions, 29 changer transitions 0/334 dead transitions. [2024-06-28 01:47:12,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 334 transitions, 4874 flow [2024-06-28 01:47:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:47:12,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:47:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 01:47:12,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-28 01:47:12,401 INFO L175 Difference]: Start difference. First operand has 196 places, 281 transitions, 3871 flow. Second operand 8 states and 183 transitions. [2024-06-28 01:47:12,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 334 transitions, 4874 flow [2024-06-28 01:47:12,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 334 transitions, 4573 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:12,832 INFO L231 Difference]: Finished difference. Result has 199 places, 298 transitions, 3941 flow [2024-06-28 01:47:12,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3578, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3941, PETRI_PLACES=199, PETRI_TRANSITIONS=298} [2024-06-28 01:47:12,833 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 145 predicate places. [2024-06-28 01:47:12,833 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 298 transitions, 3941 flow [2024-06-28 01:47:12,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:12,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:12,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:12,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:47:12,834 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:47:12,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:12,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1160472559, now seen corresponding path program 2 times [2024-06-28 01:47:12,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:12,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343604456] [2024-06-28 01:47:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:12,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:14,685 INFO 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 01:47:14,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:14,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343604456] [2024-06-28 01:47:14,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343604456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:14,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:14,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:47:14,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285636124] [2024-06-28 01:47:14,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:14,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:47:14,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:14,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:47:14,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:47:14,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:47:14,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 298 transitions, 3941 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:47:14,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:14,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:47:14,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:17,077 INFO L124 PetriNetUnfolderBase]: 7556/12349 cut-off events. [2024-06-28 01:47:17,077 INFO L125 PetriNetUnfolderBase]: For 217317/217347 co-relation queries the response was YES. [2024-06-28 01:47:17,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71488 conditions, 12349 events. 7556/12349 cut-off events. For 217317/217347 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 85441 event pairs, 2085 based on Foata normal form. 30/12105 useless extension candidates. Maximal degree in co-relation 71395. Up to 10647 conditions per place. [2024-06-28 01:47:17,407 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 294 selfloop transitions, 45 changer transitions 0/347 dead transitions. [2024-06-28 01:47:17,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 347 transitions, 5012 flow [2024-06-28 01:47:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:47:17,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:47:17,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:47:17,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-28 01:47:17,408 INFO L175 Difference]: Start difference. First operand has 199 places, 298 transitions, 3941 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:47:17,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 347 transitions, 5012 flow [2024-06-28 01:47:17,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 347 transitions, 4824 flow, removed 87 selfloop flow, removed 3 redundant places. [2024-06-28 01:47:17,928 INFO L231 Difference]: Finished difference. Result has 204 places, 306 transitions, 4019 flow [2024-06-28 01:47:17,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3771, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4019, PETRI_PLACES=204, PETRI_TRANSITIONS=306} [2024-06-28 01:47:17,929 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-28 01:47:17,929 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 306 transitions, 4019 flow [2024-06-28 01:47:17,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:47:17,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:17,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:17,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:47:17,930 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:47:17,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1302537263, now seen corresponding path program 3 times [2024-06-28 01:47:17,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:17,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824842219] [2024-06-28 01:47:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:17,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:20,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:20,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:20,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824842219] [2024-06-28 01:47:20,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824842219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:20,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:20,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:20,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290269690] [2024-06-28 01:47:20,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:20,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:20,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:20,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:20,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:20,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:47:20,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 306 transitions, 4019 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:20,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:20,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:47:20,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:24,599 INFO L124 PetriNetUnfolderBase]: 7808/12906 cut-off events. [2024-06-28 01:47:24,600 INFO L125 PetriNetUnfolderBase]: For 243974/243988 co-relation queries the response was YES. [2024-06-28 01:47:24,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75726 conditions, 12906 events. 7808/12906 cut-off events. For 243974/243988 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 90504 event pairs, 1936 based on Foata normal form. 24/12629 useless extension candidates. Maximal degree in co-relation 75630. Up to 9652 conditions per place. [2024-06-28 01:47:24,727 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 274 selfloop transitions, 168 changer transitions 0/450 dead transitions. [2024-06-28 01:47:24,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 450 transitions, 5764 flow [2024-06-28 01:47:24,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:47:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:47:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 337 transitions. [2024-06-28 01:47:24,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5400641025641025 [2024-06-28 01:47:24,728 INFO L175 Difference]: Start difference. First operand has 204 places, 306 transitions, 4019 flow. Second operand 13 states and 337 transitions. [2024-06-28 01:47:24,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 450 transitions, 5764 flow [2024-06-28 01:47:25,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 450 transitions, 5677 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 01:47:25,261 INFO L231 Difference]: Finished difference. Result has 216 places, 317 transitions, 4471 flow [2024-06-28 01:47:25,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3932, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4471, PETRI_PLACES=216, PETRI_TRANSITIONS=317} [2024-06-28 01:47:25,261 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 162 predicate places. [2024-06-28 01:47:25,262 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 317 transitions, 4471 flow [2024-06-28 01:47:25,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:25,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:25,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:25,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:47:25,262 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:47:25,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:25,263 INFO L85 PathProgramCache]: Analyzing trace with hash -548842799, now seen corresponding path program 4 times [2024-06-28 01:47:25,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:25,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359540056] [2024-06-28 01:47:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:25,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:27,953 INFO 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 01:47:27,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:27,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359540056] [2024-06-28 01:47:27,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359540056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:27,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:27,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:27,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084549169] [2024-06-28 01:47:27,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:27,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:27,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:27,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:27,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:27,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:47:27,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 317 transitions, 4471 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:27,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:27,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:47:27,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:31,950 INFO L124 PetriNetUnfolderBase]: 7914/12946 cut-off events. [2024-06-28 01:47:31,950 INFO L125 PetriNetUnfolderBase]: For 249795/249809 co-relation queries the response was YES. [2024-06-28 01:47:32,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78466 conditions, 12946 events. 7914/12946 cut-off events. For 249795/249809 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 89556 event pairs, 1686 based on Foata normal form. 24/12725 useless extension candidates. Maximal degree in co-relation 78366. Up to 7776 conditions per place. [2024-06-28 01:47:32,098 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 251 selfloop transitions, 181 changer transitions 0/440 dead transitions. [2024-06-28 01:47:32,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 440 transitions, 6068 flow [2024-06-28 01:47:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:47:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:47:32,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 314 transitions. [2024-06-28 01:47:32,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451388888888888 [2024-06-28 01:47:32,112 INFO L175 Difference]: Start difference. First operand has 216 places, 317 transitions, 4471 flow. Second operand 12 states and 314 transitions. [2024-06-28 01:47:32,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 440 transitions, 6068 flow [2024-06-28 01:47:32,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 440 transitions, 5768 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:32,691 INFO L231 Difference]: Finished difference. Result has 222 places, 318 transitions, 4606 flow [2024-06-28 01:47:32,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4173, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4606, PETRI_PLACES=222, PETRI_TRANSITIONS=318} [2024-06-28 01:47:32,692 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2024-06-28 01:47:32,692 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 318 transitions, 4606 flow [2024-06-28 01:47:32,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:32,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:32,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:32,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:47:32,693 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:47:32,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:32,693 INFO L85 PathProgramCache]: Analyzing trace with hash -175316271, now seen corresponding path program 5 times [2024-06-28 01:47:32,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:32,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007515096] [2024-06-28 01:47:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:32,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:35,774 INFO 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 01:47:35,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:35,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007515096] [2024-06-28 01:47:35,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007515096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:35,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:35,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:35,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948498793] [2024-06-28 01:47:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:35,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:35,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:35,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:35,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:35,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:47:35,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 318 transitions, 4606 flow. Second operand has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:35,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:35,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:47:35,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:39,738 INFO L124 PetriNetUnfolderBase]: 7894/13018 cut-off events. [2024-06-28 01:47:39,738 INFO L125 PetriNetUnfolderBase]: For 252632/252638 co-relation queries the response was YES. [2024-06-28 01:47:39,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78746 conditions, 13018 events. 7894/13018 cut-off events. For 252632/252638 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 91143 event pairs, 2052 based on Foata normal form. 16/12708 useless extension candidates. Maximal degree in co-relation 78644. Up to 9786 conditions per place. [2024-06-28 01:47:39,898 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 268 selfloop transitions, 160 changer transitions 0/436 dead transitions. [2024-06-28 01:47:39,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 436 transitions, 6027 flow [2024-06-28 01:47:39,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:47:39,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:47:39,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2024-06-28 01:47:39,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5399305555555556 [2024-06-28 01:47:39,900 INFO L175 Difference]: Start difference. First operand has 222 places, 318 transitions, 4606 flow. Second operand 12 states and 311 transitions. [2024-06-28 01:47:39,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 436 transitions, 6027 flow [2024-06-28 01:47:40,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 436 transitions, 5697 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:40,554 INFO L231 Difference]: Finished difference. Result has 224 places, 317 transitions, 4530 flow [2024-06-28 01:47:40,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4206, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4530, PETRI_PLACES=224, PETRI_TRANSITIONS=317} [2024-06-28 01:47:40,554 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-28 01:47:40,554 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 317 transitions, 4530 flow [2024-06-28 01:47:40,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.363636363636363) internal successors, (136), 11 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:40,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:40,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:40,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:47:40,555 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:47:40,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:40,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1542206849, now seen corresponding path program 3 times [2024-06-28 01:47:40,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:40,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619338296] [2024-06-28 01:47:40,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:40,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:42,788 INFO 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 01:47:42,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:42,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619338296] [2024-06-28 01:47:42,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619338296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:42,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:42,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:47:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616789226] [2024-06-28 01:47:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:42,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:47:42,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:42,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:47:42,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:47:42,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:47:42,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 317 transitions, 4530 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:47:42,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:42,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:47:42,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:45,274 INFO L124 PetriNetUnfolderBase]: 7945/13027 cut-off events. [2024-06-28 01:47:45,274 INFO L125 PetriNetUnfolderBase]: For 249087/249097 co-relation queries the response was YES. [2024-06-28 01:47:45,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78649 conditions, 13027 events. 7945/13027 cut-off events. For 249087/249097 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 91066 event pairs, 2329 based on Foata normal form. 10/12742 useless extension candidates. Maximal degree in co-relation 78546. Up to 11520 conditions per place. [2024-06-28 01:47:45,427 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 321 selfloop transitions, 32 changer transitions 0/361 dead transitions. [2024-06-28 01:47:45,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 361 transitions, 5672 flow [2024-06-28 01:47:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:47:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:47:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:47:45,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 01:47:45,428 INFO L175 Difference]: Start difference. First operand has 224 places, 317 transitions, 4530 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:47:45,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 361 transitions, 5672 flow [2024-06-28 01:47:46,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 361 transitions, 5099 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-28 01:47:46,191 INFO L231 Difference]: Finished difference. Result has 220 places, 328 transitions, 4262 flow [2024-06-28 01:47:46,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3957, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4262, PETRI_PLACES=220, PETRI_TRANSITIONS=328} [2024-06-28 01:47:46,191 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 166 predicate places. [2024-06-28 01:47:46,192 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 328 transitions, 4262 flow [2024-06-28 01:47:46,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:47:46,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:46,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:46,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:47:46,192 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:47:46,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:46,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1545180513, now seen corresponding path program 2 times [2024-06-28 01:47:46,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:46,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766418189] [2024-06-28 01:47:46,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:46,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:48,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:48,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766418189] [2024-06-28 01:47:48,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766418189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:48,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:48,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:47:48,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865930656] [2024-06-28 01:47:48,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:48,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:47:48,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:48,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:47:48,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:47:48,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:47:48,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 328 transitions, 4262 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:48,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:48,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:47:48,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:51,288 INFO L124 PetriNetUnfolderBase]: 7663/12651 cut-off events. [2024-06-28 01:47:51,288 INFO L125 PetriNetUnfolderBase]: For 243293/243443 co-relation queries the response was YES. [2024-06-28 01:47:51,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73844 conditions, 12651 events. 7663/12651 cut-off events. For 243293/243443 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 89754 event pairs, 2231 based on Foata normal form. 135/12424 useless extension candidates. Maximal degree in co-relation 73740. Up to 11036 conditions per place. [2024-06-28 01:47:51,443 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 314 selfloop transitions, 18 changer transitions 0/363 dead transitions. [2024-06-28 01:47:51,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 363 transitions, 5132 flow [2024-06-28 01:47:51,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:47:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:47:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:47:51,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 01:47:51,445 INFO L175 Difference]: Start difference. First operand has 220 places, 328 transitions, 4262 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:47:51,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 363 transitions, 5132 flow [2024-06-28 01:47:52,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 363 transitions, 5024 flow, removed 49 selfloop flow, removed 2 redundant places. [2024-06-28 01:47:52,248 INFO L231 Difference]: Finished difference. Result has 225 places, 331 transitions, 4258 flow [2024-06-28 01:47:52,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4258, PETRI_PLACES=225, PETRI_TRANSITIONS=331} [2024-06-28 01:47:52,249 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 171 predicate places. [2024-06-28 01:47:52,253 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 331 transitions, 4258 flow [2024-06-28 01:47:52,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:52,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:52,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:52,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:47:52,254 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:47:52,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1545655743, now seen corresponding path program 3 times [2024-06-28 01:47:52,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:52,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709000070] [2024-06-28 01:47:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:52,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:54,564 INFO 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 01:47:54,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:54,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709000070] [2024-06-28 01:47:54,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709000070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:54,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:54,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:47:54,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311985554] [2024-06-28 01:47:54,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:54,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:47:54,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:54,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:47:54,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:47:54,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:47:54,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 331 transitions, 4258 flow. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:54,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:54,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:47:54,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:57,370 INFO L124 PetriNetUnfolderBase]: 7684/12841 cut-off events. [2024-06-28 01:47:57,370 INFO L125 PetriNetUnfolderBase]: For 243928/244062 co-relation queries the response was YES. [2024-06-28 01:47:57,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74678 conditions, 12841 events. 7684/12841 cut-off events. For 243928/244062 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 91968 event pairs, 2184 based on Foata normal form. 113/12559 useless extension candidates. Maximal degree in co-relation 74572. Up to 10960 conditions per place. [2024-06-28 01:47:57,505 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 294 selfloop transitions, 55 changer transitions 0/380 dead transitions. [2024-06-28 01:47:57,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 380 transitions, 5420 flow [2024-06-28 01:47:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:47:57,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:47:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:47:57,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-28 01:47:57,507 INFO L175 Difference]: Start difference. First operand has 225 places, 331 transitions, 4258 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:47:57,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 380 transitions, 5420 flow [2024-06-28 01:47:58,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 380 transitions, 5352 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:47:58,118 INFO L231 Difference]: Finished difference. Result has 228 places, 342 transitions, 4595 flow [2024-06-28 01:47:58,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4190, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4595, PETRI_PLACES=228, PETRI_TRANSITIONS=342} [2024-06-28 01:47:58,119 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-28 01:47:58,119 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 342 transitions, 4595 flow [2024-06-28 01:47:58,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:58,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:58,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:58,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:47:58,124 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:47:58,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2049804503, now seen corresponding path program 1 times [2024-06-28 01:47:58,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:58,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573419538] [2024-06-28 01:47:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:58,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:59,734 INFO 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 01:47:59,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:59,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573419538] [2024-06-28 01:47:59,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573419538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:59,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:59,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:47:59,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56190063] [2024-06-28 01:47:59,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:59,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:47:59,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:59,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:47:59,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:47:59,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:47:59,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 342 transitions, 4595 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:47:59,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:59,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:47:59,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:02,488 INFO L124 PetriNetUnfolderBase]: 8025/13145 cut-off events. [2024-06-28 01:48:02,488 INFO L125 PetriNetUnfolderBase]: For 260386/260388 co-relation queries the response was YES. [2024-06-28 01:48:02,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78577 conditions, 13145 events. 8025/13145 cut-off events. For 260386/260388 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 91871 event pairs, 2336 based on Foata normal form. 2/12848 useless extension candidates. Maximal degree in co-relation 78469. Up to 11720 conditions per place. [2024-06-28 01:48:02,644 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 358 selfloop transitions, 18 changer transitions 0/384 dead transitions. [2024-06-28 01:48:02,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 384 transitions, 5582 flow [2024-06-28 01:48:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:48:02,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 01:48:02,646 INFO L175 Difference]: Start difference. First operand has 228 places, 342 transitions, 4595 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:48:02,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 384 transitions, 5582 flow [2024-06-28 01:48:03,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 384 transitions, 5389 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-28 01:48:03,452 INFO L231 Difference]: Finished difference. Result has 233 places, 350 transitions, 4593 flow [2024-06-28 01:48:03,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4402, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4593, PETRI_PLACES=233, PETRI_TRANSITIONS=350} [2024-06-28 01:48:03,453 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 179 predicate places. [2024-06-28 01:48:03,453 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 350 transitions, 4593 flow [2024-06-28 01:48:03,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:48:03,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:03,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:03,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:48:03,454 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:48:03,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:03,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2049653843, now seen corresponding path program 2 times [2024-06-28 01:48:03,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:03,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803463854] [2024-06-28 01:48:03,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:05,167 INFO 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 01:48:05,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:05,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803463854] [2024-06-28 01:48:05,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803463854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:05,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:05,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:48:05,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008490914] [2024-06-28 01:48:05,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:05,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:48:05,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:05,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:48:05,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:48:05,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:48:05,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 350 transitions, 4593 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:05,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:05,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:48:05,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:08,029 INFO L124 PetriNetUnfolderBase]: 8061/13202 cut-off events. [2024-06-28 01:48:08,029 INFO L125 PetriNetUnfolderBase]: For 271944/271946 co-relation queries the response was YES. [2024-06-28 01:48:08,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80280 conditions, 13202 events. 8061/13202 cut-off events. For 271944/271946 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 92320 event pairs, 2333 based on Foata normal form. 2/12904 useless extension candidates. Maximal degree in co-relation 80170. Up to 11736 conditions per place. [2024-06-28 01:48:08,200 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 353 selfloop transitions, 25 changer transitions 0/386 dead transitions. [2024-06-28 01:48:08,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 386 transitions, 5555 flow [2024-06-28 01:48:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:48:08,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 01:48:08,206 INFO L175 Difference]: Start difference. First operand has 233 places, 350 transitions, 4593 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:48:08,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 386 transitions, 5555 flow [2024-06-28 01:48:09,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 386 transitions, 5449 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 01:48:09,079 INFO L231 Difference]: Finished difference. Result has 236 places, 354 transitions, 4638 flow [2024-06-28 01:48:09,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4487, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4638, PETRI_PLACES=236, PETRI_TRANSITIONS=354} [2024-06-28 01:48:09,079 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 182 predicate places. [2024-06-28 01:48:09,079 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 354 transitions, 4638 flow [2024-06-28 01:48:09,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:09,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:09,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:09,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:48:09,080 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:48:09,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:09,080 INFO L85 PathProgramCache]: Analyzing trace with hash -2049653595, now seen corresponding path program 1 times [2024-06-28 01:48:09,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:09,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038160325] [2024-06-28 01:48:09,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:09,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:09,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:11,190 INFO 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 01:48:11,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:11,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038160325] [2024-06-28 01:48:11,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038160325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:11,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:11,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:48:11,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130654514] [2024-06-28 01:48:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:11,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:48:11,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:11,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:48:11,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:48:11,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:48:11,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 354 transitions, 4638 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:11,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:11,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:48:11,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:14,054 INFO L124 PetriNetUnfolderBase]: 8079/13225 cut-off events. [2024-06-28 01:48:14,055 INFO L125 PetriNetUnfolderBase]: For 283851/283853 co-relation queries the response was YES. [2024-06-28 01:48:14,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81643 conditions, 13225 events. 8079/13225 cut-off events. For 283851/283853 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 92438 event pairs, 2331 based on Foata normal form. 1/12926 useless extension candidates. Maximal degree in co-relation 81532. Up to 11809 conditions per place. [2024-06-28 01:48:14,225 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 362 selfloop transitions, 18 changer transitions 0/388 dead transitions. [2024-06-28 01:48:14,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 388 transitions, 5588 flow [2024-06-28 01:48:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:14,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:48:14,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 01:48:14,227 INFO L175 Difference]: Start difference. First operand has 236 places, 354 transitions, 4638 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:48:14,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 388 transitions, 5588 flow [2024-06-28 01:48:15,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 388 transitions, 5465 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 01:48:15,027 INFO L231 Difference]: Finished difference. Result has 238 places, 358 transitions, 4652 flow [2024-06-28 01:48:15,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4515, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4652, PETRI_PLACES=238, PETRI_TRANSITIONS=358} [2024-06-28 01:48:15,028 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-28 01:48:15,028 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 358 transitions, 4652 flow [2024-06-28 01:48:15,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:15,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:15,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:15,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:48:15,029 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:48:15,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1545364777, now seen corresponding path program 3 times [2024-06-28 01:48:15,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:15,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861077500] [2024-06-28 01:48:15,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:15,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:16,564 INFO 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 01:48:16,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:16,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861077500] [2024-06-28 01:48:16,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861077500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:16,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:16,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:48:16,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558325200] [2024-06-28 01:48:16,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:16,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:48:16,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:16,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:48:16,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:48:16,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:48:16,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 358 transitions, 4652 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:48:16,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:16,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:48:16,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:19,334 INFO L124 PetriNetUnfolderBase]: 8097/13259 cut-off events. [2024-06-28 01:48:19,335 INFO L125 PetriNetUnfolderBase]: For 295651/295657 co-relation queries the response was YES. [2024-06-28 01:48:19,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82554 conditions, 13259 events. 8097/13259 cut-off events. For 295651/295657 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 92754 event pairs, 2334 based on Foata normal form. 6/12965 useless extension candidates. Maximal degree in co-relation 82442. Up to 11741 conditions per place. [2024-06-28 01:48:19,517 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 348 selfloop transitions, 35 changer transitions 0/391 dead transitions. [2024-06-28 01:48:19,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 391 transitions, 5638 flow [2024-06-28 01:48:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:19,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:48:19,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2024-06-28 01:48:19,518 INFO L175 Difference]: Start difference. First operand has 238 places, 358 transitions, 4652 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:48:19,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 391 transitions, 5638 flow [2024-06-28 01:48:20,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 391 transitions, 5529 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 01:48:20,421 INFO L231 Difference]: Finished difference. Result has 240 places, 362 transitions, 4726 flow [2024-06-28 01:48:20,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4543, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4726, PETRI_PLACES=240, PETRI_TRANSITIONS=362} [2024-06-28 01:48:20,422 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 186 predicate places. [2024-06-28 01:48:20,422 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 362 transitions, 4726 flow [2024-06-28 01:48:20,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:48:20,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:20,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:20,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:48:20,423 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:48:20,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:20,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1542391795, now seen corresponding path program 2 times [2024-06-28 01:48:20,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:20,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402732070] [2024-06-28 01:48:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:20,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:22,137 INFO 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 01:48:22,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:22,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402732070] [2024-06-28 01:48:22,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402732070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:22,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:22,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:48:22,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421989690] [2024-06-28 01:48:22,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:22,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:48:22,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:22,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:48:22,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:48:22,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:48:22,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 362 transitions, 4726 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:48:22,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:22,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:48:22,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:24,957 INFO L124 PetriNetUnfolderBase]: 8115/13283 cut-off events. [2024-06-28 01:48:24,957 INFO L125 PetriNetUnfolderBase]: For 310137/310149 co-relation queries the response was YES. [2024-06-28 01:48:25,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84135 conditions, 13283 events. 8115/13283 cut-off events. For 310137/310149 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 92904 event pairs, 2327 based on Foata normal form. 11/12994 useless extension candidates. Maximal degree in co-relation 84022. Up to 11836 conditions per place. [2024-06-28 01:48:25,106 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 360 selfloop transitions, 25 changer transitions 0/393 dead transitions. [2024-06-28 01:48:25,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 393 transitions, 5700 flow [2024-06-28 01:48:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 01:48:25,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-28 01:48:25,108 INFO L175 Difference]: Start difference. First operand has 240 places, 362 transitions, 4726 flow. Second operand 7 states and 155 transitions. [2024-06-28 01:48:25,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 393 transitions, 5700 flow [2024-06-28 01:48:26,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 393 transitions, 5545 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 01:48:26,088 INFO L231 Difference]: Finished difference. Result has 242 places, 366 transitions, 4734 flow [2024-06-28 01:48:26,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4571, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4734, PETRI_PLACES=242, PETRI_TRANSITIONS=366} [2024-06-28 01:48:26,088 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 188 predicate places. [2024-06-28 01:48:26,088 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 366 transitions, 4734 flow [2024-06-28 01:48:26,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:48:26,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:26,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:26,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:48:26,089 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:48:26,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1542688465, now seen corresponding path program 3 times [2024-06-28 01:48:26,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:26,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85623649] [2024-06-28 01:48:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:27,940 INFO 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 01:48:27,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:27,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85623649] [2024-06-28 01:48:27,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85623649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:27,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:27,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:48:27,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937434078] [2024-06-28 01:48:27,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:27,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:48:27,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:27,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:48:27,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:48:27,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:48:27,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 366 transitions, 4734 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:48:27,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:27,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:48:27,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:30,825 INFO L124 PetriNetUnfolderBase]: 8115/13427 cut-off events. [2024-06-28 01:48:30,825 INFO L125 PetriNetUnfolderBase]: For 320441/320453 co-relation queries the response was YES. [2024-06-28 01:48:30,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84841 conditions, 13427 events. 8115/13427 cut-off events. For 320441/320453 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 94638 event pairs, 2327 based on Foata normal form. 11/13090 useless extension candidates. Maximal degree in co-relation 84727. Up to 11803 conditions per place. [2024-06-28 01:48:31,001 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 357 selfloop transitions, 37 changer transitions 0/402 dead transitions. [2024-06-28 01:48:31,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 402 transitions, 5758 flow [2024-06-28 01:48:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:48:31,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:48:31,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 01:48:31,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:48:31,003 INFO L175 Difference]: Start difference. First operand has 242 places, 366 transitions, 4734 flow. Second operand 8 states and 176 transitions. [2024-06-28 01:48:31,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 402 transitions, 5758 flow [2024-06-28 01:48:32,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 402 transitions, 5623 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 01:48:32,041 INFO L231 Difference]: Finished difference. Result has 245 places, 370 transitions, 4799 flow [2024-06-28 01:48:32,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4599, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4799, PETRI_PLACES=245, PETRI_TRANSITIONS=370} [2024-06-28 01:48:32,042 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 191 predicate places. [2024-06-28 01:48:32,042 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 370 transitions, 4799 flow [2024-06-28 01:48:32,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:48:32,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:32,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:32,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:48:32,043 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:48:32,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:32,043 INFO L85 PathProgramCache]: Analyzing trace with hash 135302514, now seen corresponding path program 1 times [2024-06-28 01:48:32,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:32,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581760602] [2024-06-28 01:48:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:32,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:34,495 INFO 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 01:48:34,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:34,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581760602] [2024-06-28 01:48:34,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581760602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:34,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:34,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:48:34,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503308824] [2024-06-28 01:48:34,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:34,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:48:34,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:34,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:48:34,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:48:34,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:48:34,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 370 transitions, 4799 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:34,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:34,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:48:34,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:37,670 INFO L124 PetriNetUnfolderBase]: 8161/13383 cut-off events. [2024-06-28 01:48:37,670 INFO L125 PetriNetUnfolderBase]: For 333036/333089 co-relation queries the response was YES. [2024-06-28 01:48:37,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86226 conditions, 13383 events. 8161/13383 cut-off events. For 333036/333089 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 93920 event pairs, 2209 based on Foata normal form. 54/13137 useless extension candidates. Maximal degree in co-relation 86111. Up to 11637 conditions per place. [2024-06-28 01:48:37,860 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 374 selfloop transitions, 45 changer transitions 0/427 dead transitions. [2024-06-28 01:48:37,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 427 transitions, 5963 flow [2024-06-28 01:48:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:48:37,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:48:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:48:37,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 01:48:37,861 INFO L175 Difference]: Start difference. First operand has 245 places, 370 transitions, 4799 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:48:37,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 427 transitions, 5963 flow [2024-06-28 01:48:38,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 427 transitions, 5791 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-28 01:48:38,903 INFO L231 Difference]: Finished difference. Result has 247 places, 375 transitions, 4853 flow [2024-06-28 01:48:38,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4635, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4853, PETRI_PLACES=247, PETRI_TRANSITIONS=375} [2024-06-28 01:48:38,903 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 193 predicate places. [2024-06-28 01:48:38,903 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 375 transitions, 4853 flow [2024-06-28 01:48:38,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:38,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:38,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:38,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:48:38,904 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:48:38,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:38,904 INFO L85 PathProgramCache]: Analyzing trace with hash 673522355, now seen corresponding path program 1 times [2024-06-28 01:48:38,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:38,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372918721] [2024-06-28 01:48:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:38,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:40,725 INFO 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 01:48:40,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:40,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372918721] [2024-06-28 01:48:40,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372918721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:40,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:40,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:48:40,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367751948] [2024-06-28 01:48:40,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:40,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:48:40,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:40,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:48:40,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:48:40,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:48:40,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 375 transitions, 4853 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:48:40,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:40,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:48:40,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:43,992 INFO L124 PetriNetUnfolderBase]: 8302/13564 cut-off events. [2024-06-28 01:48:43,993 INFO L125 PetriNetUnfolderBase]: For 338153/338179 co-relation queries the response was YES. [2024-06-28 01:48:44,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88454 conditions, 13564 events. 8302/13564 cut-off events. For 338153/338179 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 94835 event pairs, 2250 based on Foata normal form. 22/13280 useless extension candidates. Maximal degree in co-relation 88338. Up to 11789 conditions per place. [2024-06-28 01:48:44,139 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 374 selfloop transitions, 54 changer transitions 0/436 dead transitions. [2024-06-28 01:48:44,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 436 transitions, 6221 flow [2024-06-28 01:48:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:48:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:48:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 01:48:44,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765625 [2024-06-28 01:48:44,141 INFO L175 Difference]: Start difference. First operand has 247 places, 375 transitions, 4853 flow. Second operand 8 states and 183 transitions. [2024-06-28 01:48:44,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 436 transitions, 6221 flow [2024-06-28 01:48:45,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 436 transitions, 6003 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-28 01:48:45,101 INFO L231 Difference]: Finished difference. Result has 253 places, 396 transitions, 5155 flow [2024-06-28 01:48:45,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5155, PETRI_PLACES=253, PETRI_TRANSITIONS=396} [2024-06-28 01:48:45,102 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 199 predicate places. [2024-06-28 01:48:45,102 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 396 transitions, 5155 flow [2024-06-28 01:48:45,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:48:45,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:45,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:45,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:48:45,103 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:48:45,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:45,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1165330597, now seen corresponding path program 2 times [2024-06-28 01:48:45,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:45,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287039922] [2024-06-28 01:48:45,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:45,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:46,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:46,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287039922] [2024-06-28 01:48:46,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287039922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:46,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:46,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:48:46,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596031463] [2024-06-28 01:48:46,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:46,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:48:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:46,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:48:46,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:48:46,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:48:46,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 396 transitions, 5155 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:48:46,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:46,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:48:46,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:49,881 INFO L124 PetriNetUnfolderBase]: 8348/13646 cut-off events. [2024-06-28 01:48:49,881 INFO L125 PetriNetUnfolderBase]: For 344857/344881 co-relation queries the response was YES. [2024-06-28 01:48:50,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89188 conditions, 13646 events. 8348/13646 cut-off events. For 344857/344881 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 95628 event pairs, 2248 based on Foata normal form. 24/13365 useless extension candidates. Maximal degree in co-relation 89067. Up to 11664 conditions per place. [2024-06-28 01:48:50,081 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 367 selfloop transitions, 65 changer transitions 0/440 dead transitions. [2024-06-28 01:48:50,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 440 transitions, 6393 flow [2024-06-28 01:48:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:48:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:48:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:48:50,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:48:50,083 INFO L175 Difference]: Start difference. First operand has 253 places, 396 transitions, 5155 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:48:50,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 440 transitions, 6393 flow [2024-06-28 01:48:51,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 440 transitions, 6325 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 01:48:51,289 INFO L231 Difference]: Finished difference. Result has 258 places, 400 transitions, 5294 flow [2024-06-28 01:48:51,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5087, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5294, PETRI_PLACES=258, PETRI_TRANSITIONS=400} [2024-06-28 01:48:51,290 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-06-28 01:48:51,290 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 400 transitions, 5294 flow [2024-06-28 01:48:51,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:48:51,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:51,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:51,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:48:51,290 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:48:51,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:51,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1614926357, now seen corresponding path program 1 times [2024-06-28 01:48:51,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:51,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696657670] [2024-06-28 01:48:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:51,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:53,633 INFO 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 01:48:53,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:53,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696657670] [2024-06-28 01:48:53,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696657670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:53,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:53,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:48:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460953160] [2024-06-28 01:48:53,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:53,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:48:53,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:53,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:48:53,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:48:53,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:48:53,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 400 transitions, 5294 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:53,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:53,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:48:53,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:56,790 INFO L124 PetriNetUnfolderBase]: 8094/13310 cut-off events. [2024-06-28 01:48:56,791 INFO L125 PetriNetUnfolderBase]: For 355107/355240 co-relation queries the response was YES. [2024-06-28 01:48:56,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87448 conditions, 13310 events. 8094/13310 cut-off events. For 355107/355240 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 94369 event pairs, 2201 based on Foata normal form. 121/13069 useless extension candidates. Maximal degree in co-relation 87325. Up to 11468 conditions per place. [2024-06-28 01:48:56,960 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 369 selfloop transitions, 36 changer transitions 0/444 dead transitions. [2024-06-28 01:48:56,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 444 transitions, 6352 flow [2024-06-28 01:48:56,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:48:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:48:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-28 01:48:56,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699074074074074 [2024-06-28 01:48:56,962 INFO L175 Difference]: Start difference. First operand has 258 places, 400 transitions, 5294 flow. Second operand 9 states and 203 transitions. [2024-06-28 01:48:56,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 444 transitions, 6352 flow [2024-06-28 01:48:57,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 444 transitions, 6229 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:48:57,938 INFO L231 Difference]: Finished difference. Result has 263 places, 403 transitions, 5347 flow [2024-06-28 01:48:57,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5171, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5347, PETRI_PLACES=263, PETRI_TRANSITIONS=403} [2024-06-28 01:48:57,940 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 209 predicate places. [2024-06-28 01:48:57,940 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 403 transitions, 5347 flow [2024-06-28 01:48:57,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:57,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:57,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:57,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:48:57,941 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:48:57,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:57,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1614925892, now seen corresponding path program 2 times [2024-06-28 01:48:57,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:57,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098593278] [2024-06-28 01:48:57,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:57,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:00,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:00,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:00,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098593278] [2024-06-28 01:49:00,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098593278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:00,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:00,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:49:00,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498600628] [2024-06-28 01:49:00,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:00,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:49:00,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:00,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:49:00,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:49:00,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:49:00,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 403 transitions, 5347 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:00,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:00,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:49:00,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:03,834 INFO L124 PetriNetUnfolderBase]: 8486/13831 cut-off events. [2024-06-28 01:49:03,835 INFO L125 PetriNetUnfolderBase]: For 375280/375304 co-relation queries the response was YES. [2024-06-28 01:49:03,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91740 conditions, 13831 events. 8486/13831 cut-off events. For 375280/375304 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 96742 event pairs, 2243 based on Foata normal form. 24/13553 useless extension candidates. Maximal degree in co-relation 91616. Up to 11676 conditions per place. [2024-06-28 01:49:04,019 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 380 selfloop transitions, 85 changer transitions 0/473 dead transitions. [2024-06-28 01:49:04,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 473 transitions, 7069 flow [2024-06-28 01:49:04,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:49:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:49:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 01:49:04,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-28 01:49:04,020 INFO L175 Difference]: Start difference. First operand has 263 places, 403 transitions, 5347 flow. Second operand 9 states and 215 transitions. [2024-06-28 01:49:04,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 473 transitions, 7069 flow [2024-06-28 01:49:04,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 473 transitions, 6906 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 01:49:05,005 INFO L231 Difference]: Finished difference. Result has 266 places, 418 transitions, 5696 flow [2024-06-28 01:49:05,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5193, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5696, PETRI_PLACES=266, PETRI_TRANSITIONS=418} [2024-06-28 01:49:05,005 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 212 predicate places. [2024-06-28 01:49:05,006 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 418 transitions, 5696 flow [2024-06-28 01:49:05,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:05,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:05,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:05,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:49:05,006 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:49:05,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:05,007 INFO L85 PathProgramCache]: Analyzing trace with hash -45231689, now seen corresponding path program 3 times [2024-06-28 01:49:05,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:05,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174489592] [2024-06-28 01:49:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:05,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:06,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:06,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174489592] [2024-06-28 01:49:06,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174489592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:06,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:06,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:49:06,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581939935] [2024-06-28 01:49:06,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:06,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:49:06,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:06,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:49:06,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:49:06,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:49:06,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 418 transitions, 5696 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:49:06,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:06,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:49:06,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:10,049 INFO L124 PetriNetUnfolderBase]: 8509/13852 cut-off events. [2024-06-28 01:49:10,049 INFO L125 PetriNetUnfolderBase]: For 401628/401638 co-relation queries the response was YES. [2024-06-28 01:49:10,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94493 conditions, 13852 events. 8509/13852 cut-off events. For 401628/401638 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 96701 event pairs, 2268 based on Foata normal form. 9/13545 useless extension candidates. Maximal degree in co-relation 94367. Up to 12097 conditions per place. [2024-06-28 01:49:10,253 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 397 selfloop transitions, 55 changer transitions 0/460 dead transitions. [2024-06-28 01:49:10,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 460 transitions, 6839 flow [2024-06-28 01:49:10,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:49:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:49:10,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:49:10,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-28 01:49:10,255 INFO L175 Difference]: Start difference. First operand has 266 places, 418 transitions, 5696 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:49:10,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 460 transitions, 6839 flow [2024-06-28 01:49:11,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 460 transitions, 6611 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-28 01:49:11,627 INFO L231 Difference]: Finished difference. Result has 268 places, 421 transitions, 5658 flow [2024-06-28 01:49:11,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5472, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5658, PETRI_PLACES=268, PETRI_TRANSITIONS=421} [2024-06-28 01:49:11,628 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 214 predicate places. [2024-06-28 01:49:11,628 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 421 transitions, 5658 flow [2024-06-28 01:49:11,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:49:11,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:11,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:11,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:49:11,629 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:49:11,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:11,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1270558145, now seen corresponding path program 4 times [2024-06-28 01:49:11,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:11,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12612689] [2024-06-28 01:49:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:11,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:13,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:13,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12612689] [2024-06-28 01:49:13,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12612689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:13,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:13,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:49:13,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705347493] [2024-06-28 01:49:13,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:13,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:49:13,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:13,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:49:13,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:49:13,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:49:13,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 421 transitions, 5658 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:49:13,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:13,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:49:13,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:16,985 INFO L124 PetriNetUnfolderBase]: 8537/13901 cut-off events. [2024-06-28 01:49:16,986 INFO L125 PetriNetUnfolderBase]: For 407807/407809 co-relation queries the response was YES. [2024-06-28 01:49:17,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94692 conditions, 13901 events. 8537/13901 cut-off events. For 407807/407809 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 97143 event pairs, 2377 based on Foata normal form. 1/13589 useless extension candidates. Maximal degree in co-relation 94564. Up to 12424 conditions per place. [2024-06-28 01:49:17,163 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 431 selfloop transitions, 20 changer transitions 0/459 dead transitions. [2024-06-28 01:49:17,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 459 transitions, 6790 flow [2024-06-28 01:49:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:49:17,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:49:17,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 01:49:17,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-28 01:49:17,165 INFO L175 Difference]: Start difference. First operand has 268 places, 421 transitions, 5658 flow. Second operand 7 states and 158 transitions. [2024-06-28 01:49:17,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 459 transitions, 6790 flow [2024-06-28 01:49:18,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 459 transitions, 6684 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:49:18,450 INFO L231 Difference]: Finished difference. Result has 273 places, 427 transitions, 5704 flow [2024-06-28 01:49:18,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5552, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5704, PETRI_PLACES=273, PETRI_TRANSITIONS=427} [2024-06-28 01:49:18,450 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 219 predicate places. [2024-06-28 01:49:18,451 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 427 transitions, 5704 flow [2024-06-28 01:49:18,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:49:18,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:18,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:18,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:49:18,451 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:49:18,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:18,452 INFO L85 PathProgramCache]: Analyzing trace with hash 563777539, now seen corresponding path program 5 times [2024-06-28 01:49:18,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:18,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959487812] [2024-06-28 01:49:18,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:18,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:20,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:20,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959487812] [2024-06-28 01:49:20,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959487812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:20,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:20,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:49:20,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101612141] [2024-06-28 01:49:20,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:20,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:49:20,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:20,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:49:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:49:20,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:49:20,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 427 transitions, 5704 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:49:20,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:20,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:49:20,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:23,785 INFO L124 PetriNetUnfolderBase]: 8683/14119 cut-off events. [2024-06-28 01:49:23,786 INFO L125 PetriNetUnfolderBase]: For 429643/429655 co-relation queries the response was YES. [2024-06-28 01:49:23,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96725 conditions, 14119 events. 8683/14119 cut-off events. For 429643/429655 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 98700 event pairs, 2372 based on Foata normal form. 14/13818 useless extension candidates. Maximal degree in co-relation 96595. Up to 12341 conditions per place. [2024-06-28 01:49:24,027 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 418 selfloop transitions, 45 changer transitions 0/471 dead transitions. [2024-06-28 01:49:24,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 471 transitions, 7212 flow [2024-06-28 01:49:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:49:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:49:24,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 01:49:24,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-28 01:49:24,029 INFO L175 Difference]: Start difference. First operand has 273 places, 427 transitions, 5704 flow. Second operand 7 states and 164 transitions. [2024-06-28 01:49:24,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 471 transitions, 7212 flow [2024-06-28 01:49:25,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 471 transitions, 7148 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:49:25,616 INFO L231 Difference]: Finished difference. Result has 277 places, 437 transitions, 5998 flow [2024-06-28 01:49:25,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5640, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5998, PETRI_PLACES=277, PETRI_TRANSITIONS=437} [2024-06-28 01:49:25,617 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 223 predicate places. [2024-06-28 01:49:25,617 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 437 transitions, 5998 flow [2024-06-28 01:49:25,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:49:25,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:25,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:25,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:49:25,618 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:49:25,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:25,619 INFO L85 PathProgramCache]: Analyzing trace with hash 569491459, now seen corresponding path program 6 times [2024-06-28 01:49:25,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:25,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349622662] [2024-06-28 01:49:25,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:25,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:27,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:27,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349622662] [2024-06-28 01:49:27,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349622662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:27,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:27,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:49:27,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447884342] [2024-06-28 01:49:27,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:27,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:49:27,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:27,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:49:27,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:49:28,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:49:28,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 437 transitions, 5998 flow. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:49:28,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:28,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:49:28,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:31,247 INFO L124 PetriNetUnfolderBase]: 8678/14144 cut-off events. [2024-06-28 01:49:31,247 INFO L125 PetriNetUnfolderBase]: For 442554/442612 co-relation queries the response was YES. [2024-06-28 01:49:31,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98355 conditions, 14144 events. 8678/14144 cut-off events. For 442554/442612 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 99323 event pairs, 2271 based on Foata normal form. 40/13860 useless extension candidates. Maximal degree in co-relation 98223. Up to 12042 conditions per place. [2024-06-28 01:49:31,449 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 381 selfloop transitions, 85 changer transitions 0/474 dead transitions. [2024-06-28 01:49:31,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 474 transitions, 7318 flow [2024-06-28 01:49:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:49:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:49:31,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:49:31,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2024-06-28 01:49:31,450 INFO L175 Difference]: Start difference. First operand has 277 places, 437 transitions, 5998 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:49:31,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 474 transitions, 7318 flow [2024-06-28 01:49:32,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 474 transitions, 7187 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-28 01:49:32,838 INFO L231 Difference]: Finished difference. Result has 281 places, 438 transitions, 6065 flow [2024-06-28 01:49:32,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5871, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6065, PETRI_PLACES=281, PETRI_TRANSITIONS=438} [2024-06-28 01:49:32,839 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 227 predicate places. [2024-06-28 01:49:32,839 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 438 transitions, 6065 flow [2024-06-28 01:49:32,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 01:49:32,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:32,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:32,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:49:32,840 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:49:32,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:32,840 INFO L85 PathProgramCache]: Analyzing trace with hash 578519124, now seen corresponding path program 3 times [2024-06-28 01:49:32,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:32,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078327158] [2024-06-28 01:49:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:32,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:37,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:37,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078327158] [2024-06-28 01:49:37,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078327158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:37,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:37,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:49:37,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443414547] [2024-06-28 01:49:37,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:37,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:49:37,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:49:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:49:37,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:49:37,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 438 transitions, 6065 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:37,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:37,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:49:37,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:41,333 INFO L124 PetriNetUnfolderBase]: 8762/14394 cut-off events. [2024-06-28 01:49:41,334 INFO L125 PetriNetUnfolderBase]: For 453921/453979 co-relation queries the response was YES. [2024-06-28 01:49:41,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99900 conditions, 14394 events. 8762/14394 cut-off events. For 453921/453979 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 101669 event pairs, 2268 based on Foata normal form. 41/14068 useless extension candidates. Maximal degree in co-relation 99766. Up to 11550 conditions per place. [2024-06-28 01:49:41,539 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 361 selfloop transitions, 136 changer transitions 0/505 dead transitions. [2024-06-28 01:49:41,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 505 transitions, 8213 flow [2024-06-28 01:49:41,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:49:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:49:41,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:49:41,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-28 01:49:41,540 INFO L175 Difference]: Start difference. First operand has 281 places, 438 transitions, 6065 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:49:41,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 505 transitions, 8213 flow [2024-06-28 01:49:43,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 505 transitions, 8022 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:49:43,260 INFO L231 Difference]: Finished difference. Result has 285 places, 454 transitions, 6619 flow [2024-06-28 01:49:43,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5874, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6619, PETRI_PLACES=285, PETRI_TRANSITIONS=454} [2024-06-28 01:49:43,261 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 231 predicate places. [2024-06-28 01:49:43,261 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 454 transitions, 6619 flow [2024-06-28 01:49:43,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:43,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:43,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:43,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:49:43,262 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:49:43,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:43,262 INFO L85 PathProgramCache]: Analyzing trace with hash 563773974, now seen corresponding path program 4 times [2024-06-28 01:49:43,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:43,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912756769] [2024-06-28 01:49:43,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:43,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:46,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:46,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912756769] [2024-06-28 01:49:46,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912756769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:46,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:46,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:49:46,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289848088] [2024-06-28 01:49:46,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:46,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:49:46,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:49:46,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:49:46,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:49:46,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 454 transitions, 6619 flow. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:46,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:46,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:49:46,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:50,044 INFO L124 PetriNetUnfolderBase]: 8843/14405 cut-off events. [2024-06-28 01:49:50,045 INFO L125 PetriNetUnfolderBase]: For 477416/477474 co-relation queries the response was YES. [2024-06-28 01:49:50,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103480 conditions, 14405 events. 8843/14405 cut-off events. For 477416/477474 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 101364 event pairs, 2278 based on Foata normal form. 41/14115 useless extension candidates. Maximal degree in co-relation 103345. Up to 12140 conditions per place. [2024-06-28 01:49:50,243 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 413 selfloop transitions, 97 changer transitions 0/518 dead transitions. [2024-06-28 01:49:50,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 518 transitions, 8450 flow [2024-06-28 01:49:50,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:49:50,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:49:50,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:49:50,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:49:50,245 INFO L175 Difference]: Start difference. First operand has 285 places, 454 transitions, 6619 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:49:50,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 518 transitions, 8450 flow [2024-06-28 01:49:52,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 518 transitions, 8244 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-06-28 01:49:52,056 INFO L231 Difference]: Finished difference. Result has 292 places, 476 transitions, 7124 flow [2024-06-28 01:49:52,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6417, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7124, PETRI_PLACES=292, PETRI_TRANSITIONS=476} [2024-06-28 01:49:52,057 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 238 predicate places. [2024-06-28 01:49:52,057 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 476 transitions, 7124 flow [2024-06-28 01:49:52,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:52,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:52,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:52,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:49:52,058 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:49:52,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:52,058 INFO L85 PathProgramCache]: Analyzing trace with hash 670689719, now seen corresponding path program 2 times [2024-06-28 01:49:52,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:52,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788338564] [2024-06-28 01:49:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:54,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:54,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788338564] [2024-06-28 01:49:54,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788338564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:54,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:54,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:49:54,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473658773] [2024-06-28 01:49:54,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:54,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:49:54,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:54,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:49:54,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:49:54,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:49:54,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 476 transitions, 7124 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:54,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:54,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:49:54,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:58,625 INFO L124 PetriNetUnfolderBase]: 8561/14187 cut-off events. [2024-06-28 01:49:58,625 INFO L125 PetriNetUnfolderBase]: For 484864/485009 co-relation queries the response was YES. [2024-06-28 01:49:58,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100828 conditions, 14187 events. 8561/14187 cut-off events. For 484864/485009 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 101843 event pairs, 2208 based on Foata normal form. 125/13887 useless extension candidates. Maximal degree in co-relation 100689. Up to 11922 conditions per place. [2024-06-28 01:49:58,837 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 401 selfloop transitions, 67 changer transitions 0/523 dead transitions. [2024-06-28 01:49:58,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 523 transitions, 8514 flow [2024-06-28 01:49:58,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:49:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:49:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:49:58,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 01:49:58,839 INFO L175 Difference]: Start difference. First operand has 292 places, 476 transitions, 7124 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:49:58,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 523 transitions, 8514 flow [2024-06-28 01:50:00,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 523 transitions, 8204 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-06-28 01:50:00,627 INFO L231 Difference]: Finished difference. Result has 296 places, 478 transitions, 7032 flow [2024-06-28 01:50:00,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6814, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7032, PETRI_PLACES=296, PETRI_TRANSITIONS=478} [2024-06-28 01:50:00,627 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 242 predicate places. [2024-06-28 01:50:00,627 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 478 transitions, 7032 flow [2024-06-28 01:50:00,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:00,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:00,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:00,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:50:00,628 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:50:00,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:00,628 INFO L85 PathProgramCache]: Analyzing trace with hash 671194709, now seen corresponding path program 3 times [2024-06-28 01:50:00,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:00,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400148988] [2024-06-28 01:50:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:00,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:03,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:03,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400148988] [2024-06-28 01:50:03,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400148988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:03,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:03,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:03,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661195715] [2024-06-28 01:50:03,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:03,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:03,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:03,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:03,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:03,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:50:03,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 478 transitions, 7032 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:03,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:03,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:50:03,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:07,037 INFO L124 PetriNetUnfolderBase]: 8612/14278 cut-off events. [2024-06-28 01:50:07,037 INFO L125 PetriNetUnfolderBase]: For 500699/500844 co-relation queries the response was YES. [2024-06-28 01:50:07,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101480 conditions, 14278 events. 8612/14278 cut-off events. For 500699/500844 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 102661 event pairs, 2206 based on Foata normal form. 125/13974 useless extension candidates. Maximal degree in co-relation 101340. Up to 11880 conditions per place. [2024-06-28 01:50:07,305 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 401 selfloop transitions, 73 changer transitions 0/529 dead transitions. [2024-06-28 01:50:07,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 529 transitions, 8558 flow [2024-06-28 01:50:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:50:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:50:07,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:50:07,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 01:50:07,306 INFO L175 Difference]: Start difference. First operand has 296 places, 478 transitions, 7032 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:50:07,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 529 transitions, 8558 flow [2024-06-28 01:50:09,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 529 transitions, 8330 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 01:50:09,251 INFO L231 Difference]: Finished difference. Result has 299 places, 483 transitions, 7175 flow [2024-06-28 01:50:09,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6804, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7175, PETRI_PLACES=299, PETRI_TRANSITIONS=483} [2024-06-28 01:50:09,253 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 245 predicate places. [2024-06-28 01:50:09,253 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 483 transitions, 7175 flow [2024-06-28 01:50:09,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:09,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:09,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:09,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:50:09,253 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:50:09,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:09,254 INFO L85 PathProgramCache]: Analyzing trace with hash 655957589, now seen corresponding path program 4 times [2024-06-28 01:50:09,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:09,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20079544] [2024-06-28 01:50:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:09,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:12,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:12,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20079544] [2024-06-28 01:50:12,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20079544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:12,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:12,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:50:12,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477998026] [2024-06-28 01:50:12,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:12,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:50:12,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:12,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:50:12,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:50:12,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:50:12,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 483 transitions, 7175 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:12,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:12,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:50:12,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:15,968 INFO L124 PetriNetUnfolderBase]: 8625/14119 cut-off events. [2024-06-28 01:50:15,969 INFO L125 PetriNetUnfolderBase]: For 521457/521674 co-relation queries the response was YES. [2024-06-28 01:50:16,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101577 conditions, 14119 events. 8625/14119 cut-off events. For 521457/521674 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 100579 event pairs, 2312 based on Foata normal form. 203/13925 useless extension candidates. Maximal degree in co-relation 101435. Up to 12162 conditions per place. [2024-06-28 01:50:16,159 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 442 selfloop transitions, 21 changer transitions 0/518 dead transitions. [2024-06-28 01:50:16,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 518 transitions, 8391 flow [2024-06-28 01:50:16,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:50:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:50:16,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:50:16,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851190476190476 [2024-06-28 01:50:16,161 INFO L175 Difference]: Start difference. First operand has 299 places, 483 transitions, 7175 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:50:16,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 518 transitions, 8391 flow [2024-06-28 01:50:17,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 518 transitions, 8200 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-28 01:50:18,001 INFO L231 Difference]: Finished difference. Result has 302 places, 485 transitions, 7117 flow [2024-06-28 01:50:18,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6984, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7117, PETRI_PLACES=302, PETRI_TRANSITIONS=485} [2024-06-28 01:50:18,002 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 248 predicate places. [2024-06-28 01:50:18,002 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 485 transitions, 7117 flow [2024-06-28 01:50:18,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:18,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:18,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:18,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:50:18,002 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:50:18,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:18,003 INFO L85 PathProgramCache]: Analyzing trace with hash 655957124, now seen corresponding path program 5 times [2024-06-28 01:50:18,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:18,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340807961] [2024-06-28 01:50:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:18,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat