./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix002.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix002.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/mix002.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix002.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:49:28,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:49:29,081 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:49:29,086 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:49:29,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:49:29,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:49:29,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:49:29,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:49:29,120 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:49:29,123 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:49:29,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:49:29,124 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:49:29,124 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:49:29,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:49:29,126 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:49:29,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:49:29,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:49:29,127 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:49:29,127 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:49:29,127 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:49:29,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:49:29,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:49:29,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:49:29,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:49:29,129 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:49:29,129 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:49:29,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:49:29,130 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:49:29,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:49:29,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:49:29,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:49:29,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:49:29,132 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:49:29,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:49:29,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:49:29,132 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:49:29,133 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:49:29,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:49:29,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:49:29,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:49:29,133 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:49:29,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:49:29,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:49:29,134 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:49:29,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:49:29,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:49:29,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:49:29,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:49:29,392 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:49:29,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix002.opt.i [2024-06-28 02:49:30,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:49:30,855 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:49:30,855 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix002.opt.i [2024-06-28 02:49:30,871 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4391e8110/93d5d605faaa4fc9b3f74aacf916e4ba/FLAGfeecd18a3 [2024-06-28 02:49:30,884 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4391e8110/93d5d605faaa4fc9b3f74aacf916e4ba [2024-06-28 02:49:30,886 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:49:30,887 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:49:30,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix002.opt.yml/witness.yml [2024-06-28 02:49:31,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:49:31,131 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:49:31,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:49:31,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:49:31,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:49:31,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:49:30" (1/2) ... [2024-06-28 02:49:31,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c9f8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:49:31, skipping insertion in model container [2024-06-28 02:49:31,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:49:30" (1/2) ... [2024-06-28 02:49:31,140 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@37dafd26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:49:31, skipping insertion in model container [2024-06-28 02:49:31,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:49:31" (2/2) ... [2024-06-28 02:49:31,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c9f8e8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31, skipping insertion in model container [2024-06-28 02:49:31,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:49:31" (2/2) ... [2024-06-28 02:49:31,141 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:49:31,245 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:49:31,246 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 02:49:31,246 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 02:49:31,246 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0) [2024-06-28 02:49:31,247 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:49:31,247 INFO L106 edCorrectnessWitness]: ghost_update [L859-L859] multithreaded = 1; [2024-06-28 02:49:31,292 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:49:31,641 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:49:31,654 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:49:31,801 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:49:31,837 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:49:31,838 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31 WrapperNode [2024-06-28 02:49:31,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:49:31,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:49:31,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:49:31,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:49:31,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:31,861 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:31,927 INFO L138 Inliner]: procedures = 175, calls = 51, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 152 [2024-06-28 02:49:31,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:49:31,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:49:31,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:49:31,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:49:31,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:31,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:31,957 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:31,976 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:49:31,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:31,977 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:31,987 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:31,989 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:31,992 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:31,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:31,997 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:49:31,998 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:49:31,998 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:49:31,998 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:49:31,999 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (1/1) ... [2024-06-28 02:49:32,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:49:32,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:49:32,049 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 02:49:32,060 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 02:49:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:49:32,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:49:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:49:32,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:49:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:49:32,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:49:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:49:32,088 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:49:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:49:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:49:32,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:49:32,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:49:32,089 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 02:49:32,221 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:49:32,223 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:49:32,593 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:49:32,593 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:49:32,751 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:49:32,751 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:49:32,752 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:49:32 BoogieIcfgContainer [2024-06-28 02:49:32,752 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:49:32,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:49:32,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:49:32,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:49:32,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:49:30" (1/4) ... [2024-06-28 02:49:32,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e31a5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:49:32, skipping insertion in model container [2024-06-28 02:49:32,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:49:31" (2/4) ... [2024-06-28 02:49:32,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e31a5de and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:49:32, skipping insertion in model container [2024-06-28 02:49:32,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:49:31" (3/4) ... [2024-06-28 02:49:32,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e31a5de and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:49:32, skipping insertion in model container [2024-06-28 02:49:32,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:49:32" (4/4) ... [2024-06-28 02:49:32,762 INFO L112 eAbstractionObserver]: Analyzing ICFG mix002.opt.i [2024-06-28 02:49:32,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:49:32,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 02:49:32,781 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:49:32,856 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:49:32,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 44 transitions, 100 flow [2024-06-28 02:49:32,931 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2024-06-28 02:49:32,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:49:32,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 41 events. 0/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:49:32,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 44 transitions, 100 flow [2024-06-28 02:49:32,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2024-06-28 02:49:32,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:49:32,971 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;@1713c1df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:49:32,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 02:49:32,994 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:49:32,994 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:49:32,994 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:49:32,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:32,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:49:32,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:33,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:33,000 INFO L85 PathProgramCache]: Analyzing trace with hash 406084588, now seen corresponding path program 1 times [2024-06-28 02:49:33,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:33,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376643038] [2024-06-28 02:49:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:33,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:34,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:34,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376643038] [2024-06-28 02:49:34,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376643038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:34,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:34,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:49:34,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288089734] [2024-06-28 02:49:34,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:34,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:49:34,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:34,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:49:34,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:49:34,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 44 [2024-06-28 02:49:34,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:34,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:34,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 44 [2024-06-28 02:49:34,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:35,013 INFO L124 PetriNetUnfolderBase]: 1116/1792 cut-off events. [2024-06-28 02:49:35,014 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 02:49:35,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3543 conditions, 1792 events. 1116/1792 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9553 event pairs, 765 based on Foata normal form. 1/1724 useless extension candidates. Maximal degree in co-relation 3531. Up to 1676 conditions per place. [2024-06-28 02:49:35,034 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 31 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 02:49:35,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 175 flow [2024-06-28 02:49:35,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:49:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:49:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-28 02:49:35,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-06-28 02:49:35,048 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 3 states and 86 transitions. [2024-06-28 02:49:35,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 175 flow [2024-06-28 02:49:35,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 170 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:49:35,056 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2024-06-28 02:49:35,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 02:49:35,061 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-06-28 02:49:35,061 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2024-06-28 02:49:35,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:35,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:35,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:35,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:49:35,062 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:35,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:35,062 INFO L85 PathProgramCache]: Analyzing trace with hash -594026213, now seen corresponding path program 1 times [2024-06-28 02:49:35,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:35,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980312507] [2024-06-28 02:49:35,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:35,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:36,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:36,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980312507] [2024-06-28 02:49:36,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980312507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:36,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:36,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:49:36,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010248727] [2024-06-28 02:49:36,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:36,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:49:36,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:36,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:49:36,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:49:36,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 44 [2024-06-28 02:49:36,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:36,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:36,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 44 [2024-06-28 02:49:36,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:36,842 INFO L124 PetriNetUnfolderBase]: 1280/1988 cut-off events. [2024-06-28 02:49:36,842 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2024-06-28 02:49:36,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4509 conditions, 1988 events. 1280/1988 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10399 event pairs, 750 based on Foata normal form. 3/1970 useless extension candidates. Maximal degree in co-relation 4497. Up to 1897 conditions per place. [2024-06-28 02:49:36,855 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 39 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-28 02:49:36,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 244 flow [2024-06-28 02:49:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:49:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:49:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2024-06-28 02:49:36,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6193181818181818 [2024-06-28 02:49:36,858 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 4 states and 109 transitions. [2024-06-28 02:49:36,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 244 flow [2024-06-28 02:49:36,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:49:36,860 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 142 flow [2024-06-28 02:49:36,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-28 02:49:36,861 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-28 02:49:36,861 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 142 flow [2024-06-28 02:49:36,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:36,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:36,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:36,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:49:36,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:36,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:36,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1234942835, now seen corresponding path program 1 times [2024-06-28 02:49:36,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:36,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020647639] [2024-06-28 02:49:36,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:36,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:38,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:38,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020647639] [2024-06-28 02:49:38,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020647639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:38,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:38,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:49:38,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011469789] [2024-06-28 02:49:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:38,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:49:38,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:38,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:49:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:49:38,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-28 02:49:38,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:38,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:38,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-28 02:49:38,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:38,979 INFO L124 PetriNetUnfolderBase]: 1558/2398 cut-off events. [2024-06-28 02:49:38,979 INFO L125 PetriNetUnfolderBase]: For 1327/1327 co-relation queries the response was YES. [2024-06-28 02:49:38,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6014 conditions, 2398 events. 1558/2398 cut-off events. For 1327/1327 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 12426 event pairs, 839 based on Foata normal form. 3/2382 useless extension candidates. Maximal degree in co-relation 6000. Up to 2286 conditions per place. [2024-06-28 02:49:38,995 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 47 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-06-28 02:49:38,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 65 transitions, 324 flow [2024-06-28 02:49:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:49:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:49:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-28 02:49:38,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-06-28 02:49:38,997 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 142 flow. Second operand 5 states and 130 transitions. [2024-06-28 02:49:38,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 65 transitions, 324 flow [2024-06-28 02:49:38,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 65 transitions, 310 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:49:39,000 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 178 flow [2024-06-28 02:49:39,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-28 02:49:39,001 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2024-06-28 02:49:39,002 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 178 flow [2024-06-28 02:49:39,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:39,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:39,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:39,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:49:39,002 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:39,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:39,003 INFO L85 PathProgramCache]: Analyzing trace with hash -293456726, now seen corresponding path program 1 times [2024-06-28 02:49:39,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:39,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068409798] [2024-06-28 02:49:39,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:39,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:39,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:40,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:40,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068409798] [2024-06-28 02:49:40,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068409798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:40,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:40,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:49:40,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198231411] [2024-06-28 02:49:40,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:40,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:49:40,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:40,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:49:40,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:49:40,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-28 02:49:40,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:40,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:40,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-28 02:49:40,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:41,323 INFO L124 PetriNetUnfolderBase]: 1552/2407 cut-off events. [2024-06-28 02:49:41,323 INFO L125 PetriNetUnfolderBase]: For 2479/2479 co-relation queries the response was YES. [2024-06-28 02:49:41,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 2407 events. 1552/2407 cut-off events. For 2479/2479 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12601 event pairs, 697 based on Foata normal form. 3/2404 useless extension candidates. Maximal degree in co-relation 6578. Up to 2262 conditions per place. [2024-06-28 02:49:41,340 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 54 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-28 02:49:41,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 402 flow [2024-06-28 02:49:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:41,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:41,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 02:49:41,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 02:49:41,343 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 178 flow. Second operand 6 states and 154 transitions. [2024-06-28 02:49:41,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 402 flow [2024-06-28 02:49:41,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 378 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:49:41,346 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 214 flow [2024-06-28 02:49:41,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-28 02:49:41,347 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2024-06-28 02:49:41,348 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 214 flow [2024-06-28 02:49:41,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:41,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:41,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:41,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:49:41,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:41,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash -568962572, now seen corresponding path program 1 times [2024-06-28 02:49:41,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:41,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521721692] [2024-06-28 02:49:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:41,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:42,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:42,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521721692] [2024-06-28 02:49:42,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521721692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:42,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:42,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:49:42,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188622179] [2024-06-28 02:49:42,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:42,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:49:42,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:42,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:49:42,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:49:42,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:49:42,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:42,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:42,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:49:42,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:42,809 INFO L124 PetriNetUnfolderBase]: 1836/2891 cut-off events. [2024-06-28 02:49:42,810 INFO L125 PetriNetUnfolderBase]: For 4376/4376 co-relation queries the response was YES. [2024-06-28 02:49:42,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8378 conditions, 2891 events. 1836/2891 cut-off events. For 4376/4376 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15166 event pairs, 950 based on Foata normal form. 2/2851 useless extension candidates. Maximal degree in co-relation 8361. Up to 2709 conditions per place. [2024-06-28 02:49:42,829 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 45 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-06-28 02:49:42,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 364 flow [2024-06-28 02:49:42,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:49:42,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:49:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-28 02:49:42,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-06-28 02:49:42,831 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 214 flow. Second operand 5 states and 107 transitions. [2024-06-28 02:49:42,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 364 flow [2024-06-28 02:49:42,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 330 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:42,835 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 226 flow [2024-06-28 02:49:42,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-28 02:49:42,836 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2024-06-28 02:49:42,836 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 226 flow [2024-06-28 02:49:42,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:42,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:42,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:42,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:49:42,837 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:42,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:42,838 INFO L85 PathProgramCache]: Analyzing trace with hash -501762066, now seen corresponding path program 1 times [2024-06-28 02:49:42,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:42,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10691566] [2024-06-28 02:49:42,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:42,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:43,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:43,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10691566] [2024-06-28 02:49:43,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10691566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:43,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:43,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:43,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50122194] [2024-06-28 02:49:43,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:43,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:43,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:43,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:43,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:43,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:49:43,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:43,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:43,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:49:43,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:44,557 INFO L124 PetriNetUnfolderBase]: 1819/2922 cut-off events. [2024-06-28 02:49:44,557 INFO L125 PetriNetUnfolderBase]: For 6017/6017 co-relation queries the response was YES. [2024-06-28 02:49:44,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8945 conditions, 2922 events. 1819/2922 cut-off events. For 6017/6017 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15586 event pairs, 914 based on Foata normal form. 4/2916 useless extension candidates. Maximal degree in co-relation 8926. Up to 2677 conditions per place. [2024-06-28 02:49:44,582 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 50 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2024-06-28 02:49:44,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 408 flow [2024-06-28 02:49:44,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:44,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-28 02:49:44,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810606060606061 [2024-06-28 02:49:44,584 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 226 flow. Second operand 6 states and 127 transitions. [2024-06-28 02:49:44,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 408 flow [2024-06-28 02:49:44,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 386 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:49:44,591 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 260 flow [2024-06-28 02:49:44,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-28 02:49:44,595 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 13 predicate places. [2024-06-28 02:49:44,595 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 260 flow [2024-06-28 02:49:44,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:44,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:44,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:44,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:49:44,596 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:44,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:44,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2716375, now seen corresponding path program 1 times [2024-06-28 02:49:44,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:44,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535316223] [2024-06-28 02:49:44,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:44,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:45,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:45,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535316223] [2024-06-28 02:49:45,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535316223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:45,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:45,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:45,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205811038] [2024-06-28 02:49:45,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:45,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:45,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:45,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:49:45,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:45,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:45,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:49:45,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:46,369 INFO L124 PetriNetUnfolderBase]: 2110/3221 cut-off events. [2024-06-28 02:49:46,369 INFO L125 PetriNetUnfolderBase]: For 9465/9471 co-relation queries the response was YES. [2024-06-28 02:49:46,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10820 conditions, 3221 events. 2110/3221 cut-off events. For 9465/9471 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16347 event pairs, 1074 based on Foata normal form. 6/3224 useless extension candidates. Maximal degree in co-relation 10800. Up to 3081 conditions per place. [2024-06-28 02:49:46,400 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 56 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2024-06-28 02:49:46,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 522 flow [2024-06-28 02:49:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:46,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-28 02:49:46,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-28 02:49:46,404 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 260 flow. Second operand 6 states and 128 transitions. [2024-06-28 02:49:46,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 522 flow [2024-06-28 02:49:46,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 490 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:46,410 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 318 flow [2024-06-28 02:49:46,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-06-28 02:49:46,411 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2024-06-28 02:49:46,412 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 318 flow [2024-06-28 02:49:46,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:46,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:46,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:46,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:49:46,413 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:46,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:46,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1417243637, now seen corresponding path program 1 times [2024-06-28 02:49:46,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:46,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743827944] [2024-06-28 02:49:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:46,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:48,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:48,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743827944] [2024-06-28 02:49:48,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743827944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:48,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:48,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:48,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141709456] [2024-06-28 02:49:48,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:48,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:48,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:48,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:48,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:48,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 02:49:48,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 318 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 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 02:49:48,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:48,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 02:49:48,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:49,393 INFO L124 PetriNetUnfolderBase]: 2092/3200 cut-off events. [2024-06-28 02:49:49,394 INFO L125 PetriNetUnfolderBase]: For 12578/12578 co-relation queries the response was YES. [2024-06-28 02:49:49,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11344 conditions, 3200 events. 2092/3200 cut-off events. For 12578/12578 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16314 event pairs, 688 based on Foata normal form. 6/3194 useless extension candidates. Maximal degree in co-relation 11324. Up to 2974 conditions per place. [2024-06-28 02:49:49,415 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 75 selfloop transitions, 18 changer transitions 0/103 dead transitions. [2024-06-28 02:49:49,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 632 flow [2024-06-28 02:49:49,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:49,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:49,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 02:49:49,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426136363636364 [2024-06-28 02:49:49,418 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 318 flow. Second operand 8 states and 191 transitions. [2024-06-28 02:49:49,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 632 flow [2024-06-28 02:49:49,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 103 transitions, 608 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 02:49:49,429 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 373 flow [2024-06-28 02:49:49,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=373, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-28 02:49:49,431 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2024-06-28 02:49:49,432 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 373 flow [2024-06-28 02:49:49,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 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 02:49:49,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:49,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:49,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:49:49,433 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:49,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1625236501, now seen corresponding path program 2 times [2024-06-28 02:49:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:49,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858133943] [2024-06-28 02:49:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:49,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:50,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:50,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858133943] [2024-06-28 02:49:50,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858133943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:50,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:50,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:49:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998378222] [2024-06-28 02:49:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:50,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:49:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:50,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:49:50,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:49:50,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:49:50,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:50,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:50,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:49:50,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:51,007 INFO L124 PetriNetUnfolderBase]: 2096/3204 cut-off events. [2024-06-28 02:49:51,007 INFO L125 PetriNetUnfolderBase]: For 15999/16014 co-relation queries the response was YES. [2024-06-28 02:49:51,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12174 conditions, 3204 events. 2096/3204 cut-off events. For 15999/16014 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16299 event pairs, 895 based on Foata normal form. 12/3212 useless extension candidates. Maximal degree in co-relation 12151. Up to 3061 conditions per place. [2024-06-28 02:49:51,029 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 55 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2024-06-28 02:49:51,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 78 transitions, 553 flow [2024-06-28 02:49:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:49:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:49:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-28 02:49:51,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 02:49:51,031 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 373 flow. Second operand 6 states and 122 transitions. [2024-06-28 02:49:51,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 78 transitions, 553 flow [2024-06-28 02:49:51,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 488 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:51,043 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 348 flow [2024-06-28 02:49:51,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-28 02:49:51,044 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2024-06-28 02:49:51,045 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 348 flow [2024-06-28 02:49:51,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:51,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:51,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:51,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:49:51,046 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:51,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:51,046 INFO L85 PathProgramCache]: Analyzing trace with hash 955716885, now seen corresponding path program 1 times [2024-06-28 02:49:51,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:51,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817737762] [2024-06-28 02:49:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:51,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:51,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:51,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817737762] [2024-06-28 02:49:51,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817737762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:51,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:51,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:51,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445157058] [2024-06-28 02:49:51,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:51,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:51,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:51,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:51,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:52,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:49:52,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 348 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:52,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:52,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:49:52,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:52,695 INFO L124 PetriNetUnfolderBase]: 2311/3475 cut-off events. [2024-06-28 02:49:52,695 INFO L125 PetriNetUnfolderBase]: For 19146/19156 co-relation queries the response was YES. [2024-06-28 02:49:52,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13417 conditions, 3475 events. 2311/3475 cut-off events. For 19146/19156 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17230 event pairs, 870 based on Foata normal form. 10/3482 useless extension candidates. Maximal degree in co-relation 13392. Up to 3259 conditions per place. [2024-06-28 02:49:52,718 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 78 selfloop transitions, 41 changer transitions 0/124 dead transitions. [2024-06-28 02:49:52,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 124 transitions, 995 flow [2024-06-28 02:49:52,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:49:52,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:49:52,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 02:49:52,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-28 02:49:52,720 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 348 flow. Second operand 8 states and 166 transitions. [2024-06-28 02:49:52,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 124 transitions, 995 flow [2024-06-28 02:49:52,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 124 transitions, 930 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:52,734 INFO L231 Difference]: Finished difference. Result has 73 places, 90 transitions, 638 flow [2024-06-28 02:49:52,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=638, PETRI_PLACES=73, PETRI_TRANSITIONS=90} [2024-06-28 02:49:52,735 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2024-06-28 02:49:52,735 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 90 transitions, 638 flow [2024-06-28 02:49:52,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:52,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:52,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:52,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:49:52,736 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:52,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:52,737 INFO L85 PathProgramCache]: Analyzing trace with hash 84029139, now seen corresponding path program 2 times [2024-06-28 02:49:52,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:52,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524528196] [2024-06-28 02:49:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:52,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:53,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:53,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524528196] [2024-06-28 02:49:53,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524528196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:53,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:53,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:53,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339428500] [2024-06-28 02:49:53,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:53,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:53,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:53,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:53,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:53,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:49:53,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 90 transitions, 638 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:53,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:53,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:49:53,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:54,411 INFO L124 PetriNetUnfolderBase]: 2327/3497 cut-off events. [2024-06-28 02:49:54,411 INFO L125 PetriNetUnfolderBase]: For 23681/23695 co-relation queries the response was YES. [2024-06-28 02:49:54,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14528 conditions, 3497 events. 2327/3497 cut-off events. For 23681/23695 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17345 event pairs, 875 based on Foata normal form. 16/3510 useless extension candidates. Maximal degree in co-relation 14499. Up to 3277 conditions per place. [2024-06-28 02:49:54,431 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 70 selfloop transitions, 49 changer transitions 0/124 dead transitions. [2024-06-28 02:49:54,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 124 transitions, 1082 flow [2024-06-28 02:49:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:49:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:49:54,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 02:49:54,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 02:49:54,437 INFO L175 Difference]: Start difference. First operand has 73 places, 90 transitions, 638 flow. Second operand 7 states and 143 transitions. [2024-06-28 02:49:54,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 124 transitions, 1082 flow [2024-06-28 02:49:54,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 124 transitions, 1048 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 02:49:54,459 INFO L231 Difference]: Finished difference. Result has 78 places, 96 transitions, 791 flow [2024-06-28 02:49:54,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=791, PETRI_PLACES=78, PETRI_TRANSITIONS=96} [2024-06-28 02:49:54,460 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-06-28 02:49:54,460 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 96 transitions, 791 flow [2024-06-28 02:49:54,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:54,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:54,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:54,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:49:54,461 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:54,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1393450129, now seen corresponding path program 1 times [2024-06-28 02:49:54,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:54,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339228101] [2024-06-28 02:49:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:54,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:55,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:55,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339228101] [2024-06-28 02:49:55,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339228101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:55,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:55,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:55,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550978760] [2024-06-28 02:49:55,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:55,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:55,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:55,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:55,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:55,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:49:55,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 96 transitions, 791 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 02:49:55,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:55,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:49:55,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:56,212 INFO L124 PetriNetUnfolderBase]: 2230/3415 cut-off events. [2024-06-28 02:49:56,212 INFO L125 PetriNetUnfolderBase]: For 27008/27022 co-relation queries the response was YES. [2024-06-28 02:49:56,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14614 conditions, 3415 events. 2230/3415 cut-off events. For 27008/27022 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17447 event pairs, 825 based on Foata normal form. 13/3425 useless extension candidates. Maximal degree in co-relation 14583. Up to 3128 conditions per place. [2024-06-28 02:49:56,236 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 86 selfloop transitions, 30 changer transitions 0/131 dead transitions. [2024-06-28 02:49:56,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 131 transitions, 1219 flow [2024-06-28 02:49:56,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:49:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:49:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 02:49:56,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487012987012987 [2024-06-28 02:49:56,238 INFO L175 Difference]: Start difference. First operand has 78 places, 96 transitions, 791 flow. Second operand 7 states and 150 transitions. [2024-06-28 02:49:56,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 131 transitions, 1219 flow [2024-06-28 02:49:56,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 131 transitions, 1091 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:56,263 INFO L231 Difference]: Finished difference. Result has 80 places, 102 transitions, 802 flow [2024-06-28 02:49:56,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=802, PETRI_PLACES=80, PETRI_TRANSITIONS=102} [2024-06-28 02:49:56,264 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2024-06-28 02:49:56,264 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 102 transitions, 802 flow [2024-06-28 02:49:56,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 02:49:56,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:56,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:56,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:49:56,265 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:56,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:56,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1393450377, now seen corresponding path program 3 times [2024-06-28 02:49:56,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:56,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826794690] [2024-06-28 02:49:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:56,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:57,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:57,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:57,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826794690] [2024-06-28 02:49:57,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826794690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:57,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:57,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:57,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885428452] [2024-06-28 02:49:57,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:57,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:57,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:57,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:49:57,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 102 transitions, 802 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:57,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:57,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:49:57,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:58,072 INFO L124 PetriNetUnfolderBase]: 2372/3568 cut-off events. [2024-06-28 02:49:58,073 INFO L125 PetriNetUnfolderBase]: For 28646/28649 co-relation queries the response was YES. [2024-06-28 02:49:58,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15644 conditions, 3568 events. 2372/3568 cut-off events. For 28646/28649 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17704 event pairs, 855 based on Foata normal form. 7/3572 useless extension candidates. Maximal degree in co-relation 15613. Up to 3335 conditions per place. [2024-06-28 02:49:58,100 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 76 selfloop transitions, 55 changer transitions 0/136 dead transitions. [2024-06-28 02:49:58,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 136 transitions, 1296 flow [2024-06-28 02:49:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:49:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:49:58,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 02:49:58,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-28 02:49:58,102 INFO L175 Difference]: Start difference. First operand has 80 places, 102 transitions, 802 flow. Second operand 7 states and 141 transitions. [2024-06-28 02:49:58,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 136 transitions, 1296 flow [2024-06-28 02:49:58,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 136 transitions, 1255 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 02:49:58,134 INFO L231 Difference]: Finished difference. Result has 84 places, 111 transitions, 994 flow [2024-06-28 02:49:58,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=994, PETRI_PLACES=84, PETRI_TRANSITIONS=111} [2024-06-28 02:49:58,135 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 39 predicate places. [2024-06-28 02:49:58,135 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 111 transitions, 994 flow [2024-06-28 02:49:58,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:58,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:58,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:58,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:49:58,136 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:58,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:58,136 INFO L85 PathProgramCache]: Analyzing trace with hash -636814507, now seen corresponding path program 4 times [2024-06-28 02:49:58,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:58,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83487026] [2024-06-28 02:49:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:58,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:59,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:59,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:59,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83487026] [2024-06-28 02:49:59,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83487026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:59,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:59,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:49:59,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743341598] [2024-06-28 02:49:59,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:59,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:49:59,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:59,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:49:59,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:49:59,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:49:59,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 111 transitions, 994 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:59,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:59,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:49:59,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:59,832 INFO L124 PetriNetUnfolderBase]: 2361/3556 cut-off events. [2024-06-28 02:49:59,832 INFO L125 PetriNetUnfolderBase]: For 32451/32466 co-relation queries the response was YES. [2024-06-28 02:49:59,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16006 conditions, 3556 events. 2361/3556 cut-off events. For 32451/32466 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17657 event pairs, 859 based on Foata normal form. 14/3559 useless extension candidates. Maximal degree in co-relation 15973. Up to 3324 conditions per place. [2024-06-28 02:49:59,890 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 71 selfloop transitions, 55 changer transitions 0/131 dead transitions. [2024-06-28 02:49:59,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 131 transitions, 1314 flow [2024-06-28 02:49:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:49:59,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:49:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 02:49:59,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-28 02:49:59,892 INFO L175 Difference]: Start difference. First operand has 84 places, 111 transitions, 994 flow. Second operand 7 states and 136 transitions. [2024-06-28 02:49:59,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 131 transitions, 1314 flow [2024-06-28 02:49:59,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 131 transitions, 1145 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:59,929 INFO L231 Difference]: Finished difference. Result has 87 places, 111 transitions, 950 flow [2024-06-28 02:49:59,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=950, PETRI_PLACES=87, PETRI_TRANSITIONS=111} [2024-06-28 02:49:59,930 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2024-06-28 02:49:59,930 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 111 transitions, 950 flow [2024-06-28 02:49:59,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:59,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:59,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:59,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:49:59,931 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:49:59,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:59,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1157274769, now seen corresponding path program 2 times [2024-06-28 02:49:59,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:59,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896666433] [2024-06-28 02:49:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:59,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:00,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:00,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896666433] [2024-06-28 02:50:00,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896666433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:00,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:00,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:50:00,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108389062] [2024-06-28 02:50:00,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:00,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:50:00,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:00,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:50:00,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:50:00,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:50:00,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 111 transitions, 950 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 02:50:00,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:00,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:50:00,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:01,936 INFO L124 PetriNetUnfolderBase]: 2261/3465 cut-off events. [2024-06-28 02:50:01,936 INFO L125 PetriNetUnfolderBase]: For 35741/35756 co-relation queries the response was YES. [2024-06-28 02:50:01,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15805 conditions, 3465 events. 2261/3465 cut-off events. For 35741/35756 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17663 event pairs, 816 based on Foata normal form. 14/3473 useless extension candidates. Maximal degree in co-relation 15771. Up to 3159 conditions per place. [2024-06-28 02:50:01,960 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 91 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-06-28 02:50:01,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 142 transitions, 1378 flow [2024-06-28 02:50:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:50:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:50:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-28 02:50:01,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-28 02:50:01,962 INFO L175 Difference]: Start difference. First operand has 87 places, 111 transitions, 950 flow. Second operand 7 states and 147 transitions. [2024-06-28 02:50:01,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 142 transitions, 1378 flow [2024-06-28 02:50:01,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 142 transitions, 1209 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:01,997 INFO L231 Difference]: Finished difference. Result has 87 places, 114 transitions, 892 flow [2024-06-28 02:50:01,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=892, PETRI_PLACES=87, PETRI_TRANSITIONS=114} [2024-06-28 02:50:01,998 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 42 predicate places. [2024-06-28 02:50:01,998 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 114 transitions, 892 flow [2024-06-28 02:50:01,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 02:50:01,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:01,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:01,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:50:01,999 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:02,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1156978099, now seen corresponding path program 3 times [2024-06-28 02:50:02,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:02,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931826512] [2024-06-28 02:50:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:02,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:02,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:02,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931826512] [2024-06-28 02:50:02,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931826512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:02,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:02,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:50:02,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994524601] [2024-06-28 02:50:02,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:02,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:50:02,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:02,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:50:02,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:50:03,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:50:03,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 114 transitions, 892 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 02:50:03,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:03,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:50:03,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:03,711 INFO L124 PetriNetUnfolderBase]: 2253/3452 cut-off events. [2024-06-28 02:50:03,711 INFO L125 PetriNetUnfolderBase]: For 39129/39144 co-relation queries the response was YES. [2024-06-28 02:50:03,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15935 conditions, 3452 events. 2253/3452 cut-off events. For 39129/39144 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 17590 event pairs, 816 based on Foata normal form. 14/3460 useless extension candidates. Maximal degree in co-relation 15900. Up to 3151 conditions per place. [2024-06-28 02:50:03,731 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 85 selfloop transitions, 35 changer transitions 0/138 dead transitions. [2024-06-28 02:50:03,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 138 transitions, 1212 flow [2024-06-28 02:50:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:50:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:50:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 02:50:03,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 02:50:03,733 INFO L175 Difference]: Start difference. First operand has 87 places, 114 transitions, 892 flow. Second operand 7 states and 143 transitions. [2024-06-28 02:50:03,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 138 transitions, 1212 flow [2024-06-28 02:50:03,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 138 transitions, 1102 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:03,781 INFO L231 Difference]: Finished difference. Result has 89 places, 114 transitions, 860 flow [2024-06-28 02:50:03,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=860, PETRI_PLACES=89, PETRI_TRANSITIONS=114} [2024-06-28 02:50:03,782 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 44 predicate places. [2024-06-28 02:50:03,782 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 114 transitions, 860 flow [2024-06-28 02:50:03,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 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 02:50:03,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:03,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:03,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:50:03,783 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:03,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:03,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1858660447, now seen corresponding path program 1 times [2024-06-28 02:50:03,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:03,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987698576] [2024-06-28 02:50:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:03,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:04,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:04,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987698576] [2024-06-28 02:50:04,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987698576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:04,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:04,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:50:04,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976319483] [2024-06-28 02:50:04,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:04,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:50:04,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:04,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:50:04,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:50:04,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-28 02:50:04,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 114 transitions, 860 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:04,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:04,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-28 02:50:04,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:05,500 INFO L124 PetriNetUnfolderBase]: 1731/2905 cut-off events. [2024-06-28 02:50:05,501 INFO L125 PetriNetUnfolderBase]: For 37099/37099 co-relation queries the response was YES. [2024-06-28 02:50:05,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13525 conditions, 2905 events. 1731/2905 cut-off events. For 37099/37099 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16437 event pairs, 685 based on Foata normal form. 1/2896 useless extension candidates. Maximal degree in co-relation 13489. Up to 2524 conditions per place. [2024-06-28 02:50:05,518 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 81 selfloop transitions, 8 changer transitions 0/125 dead transitions. [2024-06-28 02:50:05,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 1084 flow [2024-06-28 02:50:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:50:05,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:50:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-28 02:50:05,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:50:05,520 INFO L175 Difference]: Start difference. First operand has 89 places, 114 transitions, 860 flow. Second operand 5 states and 110 transitions. [2024-06-28 02:50:05,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 1084 flow [2024-06-28 02:50:05,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 1001 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:05,548 INFO L231 Difference]: Finished difference. Result has 88 places, 117 transitions, 827 flow [2024-06-28 02:50:05,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=827, PETRI_PLACES=88, PETRI_TRANSITIONS=117} [2024-06-28 02:50:05,549 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 43 predicate places. [2024-06-28 02:50:05,549 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 117 transitions, 827 flow [2024-06-28 02:50:05,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:05,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:05,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:05,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:50:05,549 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:05,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1690212682, now seen corresponding path program 1 times [2024-06-28 02:50:05,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:05,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128561175] [2024-06-28 02:50:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:05,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:06,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128561175] [2024-06-28 02:50:06,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128561175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:06,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:06,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:06,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927781066] [2024-06-28 02:50:06,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:06,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:06,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:06,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:06,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:06,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 117 transitions, 827 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:06,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:06,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:06,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:07,637 INFO L124 PetriNetUnfolderBase]: 2381/3585 cut-off events. [2024-06-28 02:50:07,637 INFO L125 PetriNetUnfolderBase]: For 47069/47076 co-relation queries the response was YES. [2024-06-28 02:50:07,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17270 conditions, 3585 events. 2381/3585 cut-off events. For 47069/47076 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17858 event pairs, 838 based on Foata normal form. 8/3590 useless extension candidates. Maximal degree in co-relation 17233. Up to 3273 conditions per place. [2024-06-28 02:50:07,656 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 87 selfloop transitions, 65 changer transitions 0/157 dead transitions. [2024-06-28 02:50:07,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 157 transitions, 1369 flow [2024-06-28 02:50:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 164 transitions. [2024-06-28 02:50:07,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 02:50:07,657 INFO L175 Difference]: Start difference. First operand has 88 places, 117 transitions, 827 flow. Second operand 8 states and 164 transitions. [2024-06-28 02:50:07,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 157 transitions, 1369 flow [2024-06-28 02:50:07,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 157 transitions, 1341 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 02:50:07,690 INFO L231 Difference]: Finished difference. Result has 93 places, 123 transitions, 1011 flow [2024-06-28 02:50:07,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1011, PETRI_PLACES=93, PETRI_TRANSITIONS=123} [2024-06-28 02:50:07,690 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2024-06-28 02:50:07,690 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 123 transitions, 1011 flow [2024-06-28 02:50:07,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:07,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:07,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:07,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:50:07,691 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:07,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:07,691 INFO L85 PathProgramCache]: Analyzing trace with hash -252851665, now seen corresponding path program 1 times [2024-06-28 02:50:07,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:07,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574376660] [2024-06-28 02:50:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:07,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:08,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:08,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:08,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574376660] [2024-06-28 02:50:08,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574376660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:08,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:08,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:08,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226193191] [2024-06-28 02:50:08,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:08,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:08,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:08,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:08,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:08,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 123 transitions, 1011 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:08,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:08,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:08,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:09,705 INFO L124 PetriNetUnfolderBase]: 2403/3611 cut-off events. [2024-06-28 02:50:09,705 INFO L125 PetriNetUnfolderBase]: For 54047/54054 co-relation queries the response was YES. [2024-06-28 02:50:09,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18307 conditions, 3611 events. 2403/3611 cut-off events. For 54047/54054 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17933 event pairs, 759 based on Foata normal form. 8/3616 useless extension candidates. Maximal degree in co-relation 18269. Up to 3200 conditions per place. [2024-06-28 02:50:09,736 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 95 selfloop transitions, 65 changer transitions 0/165 dead transitions. [2024-06-28 02:50:09,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 165 transitions, 1581 flow [2024-06-28 02:50:09,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:09,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 02:50:09,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744318181818182 [2024-06-28 02:50:09,737 INFO L175 Difference]: Start difference. First operand has 93 places, 123 transitions, 1011 flow. Second operand 8 states and 167 transitions. [2024-06-28 02:50:09,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 165 transitions, 1581 flow [2024-06-28 02:50:09,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 165 transitions, 1476 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 02:50:09,805 INFO L231 Difference]: Finished difference. Result has 97 places, 129 transitions, 1124 flow [2024-06-28 02:50:09,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1124, PETRI_PLACES=97, PETRI_TRANSITIONS=129} [2024-06-28 02:50:09,806 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2024-06-28 02:50:09,806 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 129 transitions, 1124 flow [2024-06-28 02:50:09,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:09,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:09,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:09,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:50:09,808 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:09,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash -252851882, now seen corresponding path program 2 times [2024-06-28 02:50:09,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:09,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56172363] [2024-06-28 02:50:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:09,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:10,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:10,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56172363] [2024-06-28 02:50:10,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56172363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:10,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:10,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458257232] [2024-06-28 02:50:10,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:10,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:10,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:10,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:10,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:10,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 129 transitions, 1124 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:10,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:10,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:10,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:11,820 INFO L124 PetriNetUnfolderBase]: 2414/3637 cut-off events. [2024-06-28 02:50:11,820 INFO L125 PetriNetUnfolderBase]: For 60333/60340 co-relation queries the response was YES. [2024-06-28 02:50:11,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19119 conditions, 3637 events. 2414/3637 cut-off events. For 60333/60340 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18116 event pairs, 812 based on Foata normal form. 8/3642 useless extension candidates. Maximal degree in co-relation 19079. Up to 3317 conditions per place. [2024-06-28 02:50:11,840 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 99 selfloop transitions, 61 changer transitions 0/165 dead transitions. [2024-06-28 02:50:11,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 165 transitions, 1652 flow [2024-06-28 02:50:11,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:11,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 02:50:11,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 02:50:11,842 INFO L175 Difference]: Start difference. First operand has 97 places, 129 transitions, 1124 flow. Second operand 8 states and 162 transitions. [2024-06-28 02:50:11,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 165 transitions, 1652 flow [2024-06-28 02:50:11,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 165 transitions, 1571 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 02:50:11,889 INFO L231 Difference]: Finished difference. Result has 101 places, 132 transitions, 1205 flow [2024-06-28 02:50:11,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1205, PETRI_PLACES=101, PETRI_TRANSITIONS=132} [2024-06-28 02:50:11,890 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2024-06-28 02:50:11,890 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 132 transitions, 1205 flow [2024-06-28 02:50:11,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:11,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:11,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:11,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:50:11,891 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:11,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:11,891 INFO L85 PathProgramCache]: Analyzing trace with hash -247287475, now seen corresponding path program 2 times [2024-06-28 02:50:11,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:11,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543232588] [2024-06-28 02:50:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:11,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:12,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:12,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543232588] [2024-06-28 02:50:12,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543232588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:12,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:12,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:12,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079073038] [2024-06-28 02:50:12,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:12,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:12,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:12,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:12,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:13,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:13,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 132 transitions, 1205 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:13,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:13,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:13,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:13,915 INFO L124 PetriNetUnfolderBase]: 2468/3715 cut-off events. [2024-06-28 02:50:13,915 INFO L125 PetriNetUnfolderBase]: For 67426/67429 co-relation queries the response was YES. [2024-06-28 02:50:13,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19980 conditions, 3715 events. 2468/3715 cut-off events. For 67426/67429 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18525 event pairs, 768 based on Foata normal form. 4/3716 useless extension candidates. Maximal degree in co-relation 19938. Up to 3262 conditions per place. [2024-06-28 02:50:13,938 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 103 selfloop transitions, 66 changer transitions 0/174 dead transitions. [2024-06-28 02:50:13,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 174 transitions, 1869 flow [2024-06-28 02:50:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 02:50:13,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48011363636363635 [2024-06-28 02:50:13,940 INFO L175 Difference]: Start difference. First operand has 101 places, 132 transitions, 1205 flow. Second operand 8 states and 169 transitions. [2024-06-28 02:50:13,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 174 transitions, 1869 flow [2024-06-28 02:50:14,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 174 transitions, 1764 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:14,020 INFO L231 Difference]: Finished difference. Result has 104 places, 138 transitions, 1314 flow [2024-06-28 02:50:14,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1314, PETRI_PLACES=104, PETRI_TRANSITIONS=138} [2024-06-28 02:50:14,021 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 59 predicate places. [2024-06-28 02:50:14,021 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 138 transitions, 1314 flow [2024-06-28 02:50:14,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:14,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:14,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:14,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:50:14,022 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:14,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:14,022 INFO L85 PathProgramCache]: Analyzing trace with hash -247280035, now seen corresponding path program 3 times [2024-06-28 02:50:14,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:14,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663300692] [2024-06-28 02:50:14,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:14,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:14,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:14,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663300692] [2024-06-28 02:50:14,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663300692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:14,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:14,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:14,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607796655] [2024-06-28 02:50:14,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:14,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:14,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:14,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:15,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:15,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 138 transitions, 1314 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:15,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:15,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:15,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:15,923 INFO L124 PetriNetUnfolderBase]: 2458/3701 cut-off events. [2024-06-28 02:50:15,923 INFO L125 PetriNetUnfolderBase]: For 73074/73077 co-relation queries the response was YES. [2024-06-28 02:50:15,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20259 conditions, 3701 events. 2458/3701 cut-off events. For 73074/73077 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18451 event pairs, 768 based on Foata normal form. 4/3702 useless extension candidates. Maximal degree in co-relation 20216. Up to 3254 conditions per place. [2024-06-28 02:50:15,945 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 96 selfloop transitions, 69 changer transitions 0/170 dead transitions. [2024-06-28 02:50:15,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 170 transitions, 1816 flow [2024-06-28 02:50:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 02:50:15,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 02:50:15,947 INFO L175 Difference]: Start difference. First operand has 104 places, 138 transitions, 1314 flow. Second operand 8 states and 165 transitions. [2024-06-28 02:50:15,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 170 transitions, 1816 flow [2024-06-28 02:50:16,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 170 transitions, 1692 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:50:16,009 INFO L231 Difference]: Finished difference. Result has 108 places, 138 transitions, 1336 flow [2024-06-28 02:50:16,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1336, PETRI_PLACES=108, PETRI_TRANSITIONS=138} [2024-06-28 02:50:16,010 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2024-06-28 02:50:16,010 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 138 transitions, 1336 flow [2024-06-28 02:50:16,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:16,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:16,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:16,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:50:16,011 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:16,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:16,011 INFO L85 PathProgramCache]: Analyzing trace with hash -247287692, now seen corresponding path program 3 times [2024-06-28 02:50:16,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:16,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940267222] [2024-06-28 02:50:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:16,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:17,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:17,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:17,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940267222] [2024-06-28 02:50:17,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940267222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:17,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:17,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:17,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903522510] [2024-06-28 02:50:17,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:17,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:17,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:17,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:17,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:17,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:17,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 138 transitions, 1336 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:17,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:17,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:17,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:17,962 INFO L124 PetriNetUnfolderBase]: 2469/3717 cut-off events. [2024-06-28 02:50:17,962 INFO L125 PetriNetUnfolderBase]: For 79105/79108 co-relation queries the response was YES. [2024-06-28 02:50:17,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20624 conditions, 3717 events. 2469/3717 cut-off events. For 79105/79108 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18528 event pairs, 824 based on Foata normal form. 4/3718 useless extension candidates. Maximal degree in co-relation 20580. Up to 3393 conditions per place. [2024-06-28 02:50:17,987 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 105 selfloop transitions, 61 changer transitions 0/171 dead transitions. [2024-06-28 02:50:17,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 171 transitions, 1879 flow [2024-06-28 02:50:17,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:17,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 02:50:17,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 02:50:17,988 INFO L175 Difference]: Start difference. First operand has 108 places, 138 transitions, 1336 flow. Second operand 8 states and 160 transitions. [2024-06-28 02:50:17,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 171 transitions, 1879 flow [2024-06-28 02:50:18,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 171 transitions, 1724 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:18,086 INFO L231 Difference]: Finished difference. Result has 109 places, 141 transitions, 1346 flow [2024-06-28 02:50:18,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1346, PETRI_PLACES=109, PETRI_TRANSITIONS=141} [2024-06-28 02:50:18,086 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 64 predicate places. [2024-06-28 02:50:18,086 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 141 transitions, 1346 flow [2024-06-28 02:50:18,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:18,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:18,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:18,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:50:18,087 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:18,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:18,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1733595455, now seen corresponding path program 4 times [2024-06-28 02:50:18,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:18,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642098525] [2024-06-28 02:50:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:18,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:19,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:19,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642098525] [2024-06-28 02:50:19,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642098525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:19,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:19,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:19,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011662549] [2024-06-28 02:50:19,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:19,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:19,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:19,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:19,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:19,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:19,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 141 transitions, 1346 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:19,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:19,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:19,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:20,011 INFO L124 PetriNetUnfolderBase]: 2523/3798 cut-off events. [2024-06-28 02:50:20,011 INFO L125 PetriNetUnfolderBase]: For 87583/87595 co-relation queries the response was YES. [2024-06-28 02:50:20,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21285 conditions, 3798 events. 2523/3798 cut-off events. For 87583/87595 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18958 event pairs, 766 based on Foata normal form. 12/3799 useless extension candidates. Maximal degree in co-relation 21240. Up to 3316 conditions per place. [2024-06-28 02:50:20,037 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 103 selfloop transitions, 72 changer transitions 0/180 dead transitions. [2024-06-28 02:50:20,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 180 transitions, 2044 flow [2024-06-28 02:50:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:20,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-28 02:50:20,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 02:50:20,039 INFO L175 Difference]: Start difference. First operand has 109 places, 141 transitions, 1346 flow. Second operand 8 states and 165 transitions. [2024-06-28 02:50:20,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 180 transitions, 2044 flow [2024-06-28 02:50:20,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 180 transitions, 1936 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:20,124 INFO L231 Difference]: Finished difference. Result has 112 places, 147 transitions, 1468 flow [2024-06-28 02:50:20,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1468, PETRI_PLACES=112, PETRI_TRANSITIONS=147} [2024-06-28 02:50:20,124 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 67 predicate places. [2024-06-28 02:50:20,125 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 147 transitions, 1468 flow [2024-06-28 02:50:20,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:20,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:20,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:20,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:50:20,125 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:20,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:20,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1748738685, now seen corresponding path program 5 times [2024-06-28 02:50:20,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:20,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413542451] [2024-06-28 02:50:20,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:20,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:21,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:21,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413542451] [2024-06-28 02:50:21,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413542451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:21,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:21,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015858046] [2024-06-28 02:50:21,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:21,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:21,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:21,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:21,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:21,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:21,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 147 transitions, 1468 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:21,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:21,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:21,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:22,033 INFO L124 PetriNetUnfolderBase]: 2513/3784 cut-off events. [2024-06-28 02:50:22,033 INFO L125 PetriNetUnfolderBase]: For 94226/94238 co-relation queries the response was YES. [2024-06-28 02:50:22,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21564 conditions, 3784 events. 2513/3784 cut-off events. For 94226/94238 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18884 event pairs, 771 based on Foata normal form. 12/3785 useless extension candidates. Maximal degree in co-relation 21518. Up to 3308 conditions per place. [2024-06-28 02:50:22,058 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 91 selfloop transitions, 80 changer transitions 0/176 dead transitions. [2024-06-28 02:50:22,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 176 transitions, 1986 flow [2024-06-28 02:50:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 02:50:22,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 02:50:22,059 INFO L175 Difference]: Start difference. First operand has 112 places, 147 transitions, 1468 flow. Second operand 8 states and 160 transitions. [2024-06-28 02:50:22,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 176 transitions, 1986 flow [2024-06-28 02:50:22,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 176 transitions, 1794 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:22,150 INFO L231 Difference]: Finished difference. Result has 115 places, 147 transitions, 1444 flow [2024-06-28 02:50:22,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1444, PETRI_PLACES=115, PETRI_TRANSITIONS=147} [2024-06-28 02:50:22,150 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 70 predicate places. [2024-06-28 02:50:22,150 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 147 transitions, 1444 flow [2024-06-28 02:50:22,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:22,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:22,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:22,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:50:22,151 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:22,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:22,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1515785907, now seen corresponding path program 6 times [2024-06-28 02:50:22,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:22,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470601174] [2024-06-28 02:50:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:22,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:23,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470601174] [2024-06-28 02:50:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470601174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:23,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:23,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:23,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851666941] [2024-06-28 02:50:23,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:23,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:23,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:23,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:23,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 147 transitions, 1444 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:23,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:23,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:23,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:24,310 INFO L124 PetriNetUnfolderBase]: 2503/3770 cut-off events. [2024-06-28 02:50:24,310 INFO L125 PetriNetUnfolderBase]: For 99386/99398 co-relation queries the response was YES. [2024-06-28 02:50:24,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21662 conditions, 3770 events. 2503/3770 cut-off events. For 99386/99398 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18823 event pairs, 762 based on Foata normal form. 12/3771 useless extension candidates. Maximal degree in co-relation 21615. Up to 3300 conditions per place. [2024-06-28 02:50:24,338 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 99 selfloop transitions, 73 changer transitions 0/177 dead transitions. [2024-06-28 02:50:24,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 177 transitions, 1884 flow [2024-06-28 02:50:24,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-28 02:50:24,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 02:50:24,339 INFO L175 Difference]: Start difference. First operand has 115 places, 147 transitions, 1444 flow. Second operand 8 states and 160 transitions. [2024-06-28 02:50:24,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 177 transitions, 1884 flow [2024-06-28 02:50:24,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 177 transitions, 1684 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:24,394 INFO L231 Difference]: Finished difference. Result has 116 places, 147 transitions, 1400 flow [2024-06-28 02:50:24,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1400, PETRI_PLACES=116, PETRI_TRANSITIONS=147} [2024-06-28 02:50:24,395 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 71 predicate places. [2024-06-28 02:50:24,395 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 147 transitions, 1400 flow [2024-06-28 02:50:24,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:24,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:24,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:24,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:50:24,395 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:24,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:24,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1739534258, now seen corresponding path program 4 times [2024-06-28 02:50:24,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:24,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545811689] [2024-06-28 02:50:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:24,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:25,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:25,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545811689] [2024-06-28 02:50:25,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545811689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:25,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:25,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550859604] [2024-06-28 02:50:25,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:25,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:25,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:25,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:25,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 147 transitions, 1400 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:25,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:25,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:25,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:26,307 INFO L124 PetriNetUnfolderBase]: 2498/3770 cut-off events. [2024-06-28 02:50:26,307 INFO L125 PetriNetUnfolderBase]: For 105285/105288 co-relation queries the response was YES. [2024-06-28 02:50:26,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21819 conditions, 3770 events. 2498/3770 cut-off events. For 105285/105288 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18866 event pairs, 838 based on Foata normal form. 4/3761 useless extension candidates. Maximal degree in co-relation 21771. Up to 3438 conditions per place. [2024-06-28 02:50:26,385 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 105 selfloop transitions, 61 changer transitions 0/171 dead transitions. [2024-06-28 02:50:26,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 171 transitions, 1812 flow [2024-06-28 02:50:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 02:50:26,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-28 02:50:26,386 INFO L175 Difference]: Start difference. First operand has 116 places, 147 transitions, 1400 flow. Second operand 8 states and 155 transitions. [2024-06-28 02:50:26,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 171 transitions, 1812 flow [2024-06-28 02:50:26,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 171 transitions, 1603 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:26,484 INFO L231 Difference]: Finished difference. Result has 116 places, 147 transitions, 1323 flow [2024-06-28 02:50:26,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1323, PETRI_PLACES=116, PETRI_TRANSITIONS=147} [2024-06-28 02:50:26,485 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 71 predicate places. [2024-06-28 02:50:26,485 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 147 transitions, 1323 flow [2024-06-28 02:50:26,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:26,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:26,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:26,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:50:26,485 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:26,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:26,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1506243084, now seen corresponding path program 1 times [2024-06-28 02:50:26,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:26,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142159061] [2024-06-28 02:50:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:26,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:27,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:27,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142159061] [2024-06-28 02:50:27,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142159061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:27,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:27,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:50:27,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853028350] [2024-06-28 02:50:27,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:27,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:50:27,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:27,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:50:27,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:50:27,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:50:27,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 147 transitions, 1323 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:27,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:27,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:50:27,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:28,624 INFO L124 PetriNetUnfolderBase]: 2071/3308 cut-off events. [2024-06-28 02:50:28,624 INFO L125 PetriNetUnfolderBase]: For 95584/95584 co-relation queries the response was YES. [2024-06-28 02:50:28,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18712 conditions, 3308 events. 2071/3308 cut-off events. For 95584/95584 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17677 event pairs, 669 based on Foata normal form. 4/3310 useless extension candidates. Maximal degree in co-relation 18663. Up to 2960 conditions per place. [2024-06-28 02:50:28,648 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 135 selfloop transitions, 16 changer transitions 0/176 dead transitions. [2024-06-28 02:50:28,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 176 transitions, 1747 flow [2024-06-28 02:50:28,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:50:28,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:50:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 02:50:28,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-28 02:50:28,649 INFO L175 Difference]: Start difference. First operand has 116 places, 147 transitions, 1323 flow. Second operand 8 states and 163 transitions. [2024-06-28 02:50:28,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 176 transitions, 1747 flow [2024-06-28 02:50:28,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 176 transitions, 1539 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:50:28,737 INFO L231 Difference]: Finished difference. Result has 115 places, 152 transitions, 1214 flow [2024-06-28 02:50:28,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1214, PETRI_PLACES=115, PETRI_TRANSITIONS=152} [2024-06-28 02:50:28,738 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 70 predicate places. [2024-06-28 02:50:28,738 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 152 transitions, 1214 flow [2024-06-28 02:50:28,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:28,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:28,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:28,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:50:28,739 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:28,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:28,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1783897120, now seen corresponding path program 1 times [2024-06-28 02:50:28,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:28,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261323198] [2024-06-28 02:50:28,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:28,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:30,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:30,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:30,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261323198] [2024-06-28 02:50:30,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261323198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:30,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:30,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:50:30,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144993439] [2024-06-28 02:50:30,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:30,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:50:30,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:30,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:50:30,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:50:30,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-28 02:50:30,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 152 transitions, 1214 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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 02:50:30,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:30,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-28 02:50:30,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:30,685 INFO L124 PetriNetUnfolderBase]: 1827/3072 cut-off events. [2024-06-28 02:50:30,685 INFO L125 PetriNetUnfolderBase]: For 98281/98281 co-relation queries the response was YES. [2024-06-28 02:50:30,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17841 conditions, 3072 events. 1827/3072 cut-off events. For 98281/98281 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 17352 event pairs, 641 based on Foata normal form. 2/3072 useless extension candidates. Maximal degree in co-relation 17791. Up to 2582 conditions per place. [2024-06-28 02:50:30,707 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 104 selfloop transitions, 11 changer transitions 0/165 dead transitions. [2024-06-28 02:50:30,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 165 transitions, 1500 flow [2024-06-28 02:50:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:50:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:50:30,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-28 02:50:30,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-06-28 02:50:30,708 INFO L175 Difference]: Start difference. First operand has 115 places, 152 transitions, 1214 flow. Second operand 6 states and 129 transitions. [2024-06-28 02:50:30,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 165 transitions, 1500 flow [2024-06-28 02:50:30,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 165 transitions, 1441 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:30,807 INFO L231 Difference]: Finished difference. Result has 116 places, 155 transitions, 1217 flow [2024-06-28 02:50:30,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1217, PETRI_PLACES=116, PETRI_TRANSITIONS=155} [2024-06-28 02:50:30,808 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 71 predicate places. [2024-06-28 02:50:30,808 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 155 transitions, 1217 flow [2024-06-28 02:50:30,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 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 02:50:30,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:30,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:30,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:50:30,809 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:30,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:30,809 INFO L85 PathProgramCache]: Analyzing trace with hash -857104494, now seen corresponding path program 1 times [2024-06-28 02:50:30,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:30,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974497862] [2024-06-28 02:50:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:30,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:30,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:32,027 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 02:50:32,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:32,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974497862] [2024-06-28 02:50:32,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974497862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:32,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:32,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:32,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174382140] [2024-06-28 02:50:32,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:32,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:32,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:32,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:32,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:32,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:32,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 155 transitions, 1217 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:32,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:32,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:32,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:33,071 INFO L124 PetriNetUnfolderBase]: 2492/3762 cut-off events. [2024-06-28 02:50:33,071 INFO L125 PetriNetUnfolderBase]: For 122890/122894 co-relation queries the response was YES. [2024-06-28 02:50:33,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22653 conditions, 3762 events. 2492/3762 cut-off events. For 122890/122894 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 18834 event pairs, 762 based on Foata normal form. 6/3766 useless extension candidates. Maximal degree in co-relation 22602. Up to 3567 conditions per place. [2024-06-28 02:50:33,095 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 166 selfloop transitions, 27 changer transitions 0/198 dead transitions. [2024-06-28 02:50:33,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 198 transitions, 1777 flow [2024-06-28 02:50:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 02:50:33,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-06-28 02:50:33,096 INFO L175 Difference]: Start difference. First operand has 116 places, 155 transitions, 1217 flow. Second operand 9 states and 178 transitions. [2024-06-28 02:50:33,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 198 transitions, 1777 flow [2024-06-28 02:50:33,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 198 transitions, 1737 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 02:50:33,200 INFO L231 Difference]: Finished difference. Result has 121 places, 158 transitions, 1287 flow [2024-06-28 02:50:33,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1287, PETRI_PLACES=121, PETRI_TRANSITIONS=158} [2024-06-28 02:50:33,200 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 76 predicate places. [2024-06-28 02:50:33,200 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 158 transitions, 1287 flow [2024-06-28 02:50:33,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:33,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:33,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:33,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:50:33,201 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:33,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:33,201 INFO L85 PathProgramCache]: Analyzing trace with hash 669184126, now seen corresponding path program 2 times [2024-06-28 02:50:33,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:33,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740239796] [2024-06-28 02:50:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:33,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:34,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:34,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740239796] [2024-06-28 02:50:34,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740239796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:34,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:34,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:34,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032696005] [2024-06-28 02:50:34,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:34,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:34,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:34,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:34,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:34,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:34,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 158 transitions, 1287 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:34,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:34,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:34,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:35,371 INFO L124 PetriNetUnfolderBase]: 2503/3785 cut-off events. [2024-06-28 02:50:35,371 INFO L125 PetriNetUnfolderBase]: For 131934/131941 co-relation queries the response was YES. [2024-06-28 02:50:35,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23451 conditions, 3785 events. 2503/3785 cut-off events. For 131934/131941 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19070 event pairs, 772 based on Foata normal form. 8/3790 useless extension candidates. Maximal degree in co-relation 23399. Up to 3392 conditions per place. [2024-06-28 02:50:35,399 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 118 selfloop transitions, 79 changer transitions 0/202 dead transitions. [2024-06-28 02:50:35,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 202 transitions, 2009 flow [2024-06-28 02:50:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:35,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 02:50:35,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 02:50:35,401 INFO L175 Difference]: Start difference. First operand has 121 places, 158 transitions, 1287 flow. Second operand 9 states and 183 transitions. [2024-06-28 02:50:35,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 202 transitions, 2009 flow [2024-06-28 02:50:35,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 202 transitions, 1923 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:35,555 INFO L231 Difference]: Finished difference. Result has 123 places, 164 transitions, 1469 flow [2024-06-28 02:50:35,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1469, PETRI_PLACES=123, PETRI_TRANSITIONS=164} [2024-06-28 02:50:35,555 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 78 predicate places. [2024-06-28 02:50:35,555 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 164 transitions, 1469 flow [2024-06-28 02:50:35,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:35,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:35,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:35,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:50:35,556 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:35,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash 669184312, now seen corresponding path program 1 times [2024-06-28 02:50:35,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:35,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948665854] [2024-06-28 02:50:35,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:35,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:36,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:36,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:36,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948665854] [2024-06-28 02:50:36,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948665854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:36,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:36,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:36,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347636607] [2024-06-28 02:50:36,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:36,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:36,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:36,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:36,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:36,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 164 transitions, 1469 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:36,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:36,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:36,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:37,795 INFO L124 PetriNetUnfolderBase]: 2525/3817 cut-off events. [2024-06-28 02:50:37,796 INFO L125 PetriNetUnfolderBase]: For 143922/143929 co-relation queries the response was YES. [2024-06-28 02:50:37,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24390 conditions, 3817 events. 2525/3817 cut-off events. For 143922/143929 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19273 event pairs, 689 based on Foata normal form. 8/3822 useless extension candidates. Maximal degree in co-relation 24337. Up to 3134 conditions per place. [2024-06-28 02:50:37,824 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 115 selfloop transitions, 92 changer transitions 0/212 dead transitions. [2024-06-28 02:50:37,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 212 transitions, 2223 flow [2024-06-28 02:50:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:37,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-28 02:50:37,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-28 02:50:37,826 INFO L175 Difference]: Start difference. First operand has 123 places, 164 transitions, 1469 flow. Second operand 9 states and 190 transitions. [2024-06-28 02:50:37,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 212 transitions, 2223 flow [2024-06-28 02:50:37,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 212 transitions, 2096 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:37,975 INFO L231 Difference]: Finished difference. Result has 127 places, 170 transitions, 1628 flow [2024-06-28 02:50:37,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1628, PETRI_PLACES=127, PETRI_TRANSITIONS=170} [2024-06-28 02:50:37,975 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 82 predicate places. [2024-06-28 02:50:37,976 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 170 transitions, 1628 flow [2024-06-28 02:50:37,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:37,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:37,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:37,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:50:37,976 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:37,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:37,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1276848926, now seen corresponding path program 2 times [2024-06-28 02:50:37,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:37,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123962285] [2024-06-28 02:50:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:37,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:38,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:38,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123962285] [2024-06-28 02:50:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123962285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:38,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:38,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749469043] [2024-06-28 02:50:38,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:38,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:39,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:39,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 170 transitions, 1628 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:39,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:39,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:39,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:40,071 INFO L124 PetriNetUnfolderBase]: 2579/3889 cut-off events. [2024-06-28 02:50:40,071 INFO L125 PetriNetUnfolderBase]: For 156388/156395 co-relation queries the response was YES. [2024-06-28 02:50:40,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25868 conditions, 3889 events. 2579/3889 cut-off events. For 156388/156395 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19549 event pairs, 683 based on Foata normal form. 8/3894 useless extension candidates. Maximal degree in co-relation 25813. Up to 3180 conditions per place. [2024-06-28 02:50:40,101 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 129 selfloop transitions, 86 changer transitions 0/220 dead transitions. [2024-06-28 02:50:40,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 220 transitions, 2542 flow [2024-06-28 02:50:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:40,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:40,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2024-06-28 02:50:40,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-28 02:50:40,102 INFO L175 Difference]: Start difference. First operand has 127 places, 170 transitions, 1628 flow. Second operand 9 states and 192 transitions. [2024-06-28 02:50:40,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 220 transitions, 2542 flow [2024-06-28 02:50:40,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 220 transitions, 2376 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:40,256 INFO L231 Difference]: Finished difference. Result has 131 places, 176 transitions, 1742 flow [2024-06-28 02:50:40,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1742, PETRI_PLACES=131, PETRI_TRANSITIONS=176} [2024-06-28 02:50:40,257 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2024-06-28 02:50:40,257 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 176 transitions, 1742 flow [2024-06-28 02:50:40,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:40,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:40,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:40,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:50:40,257 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:40,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:40,257 INFO L85 PathProgramCache]: Analyzing trace with hash 751534012, now seen corresponding path program 3 times [2024-06-28 02:50:40,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:40,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503820946] [2024-06-28 02:50:40,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:40,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:41,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:41,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:41,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503820946] [2024-06-28 02:50:41,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503820946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:41,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:41,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:41,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62942752] [2024-06-28 02:50:41,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:41,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:41,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:41,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:41,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:41,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:41,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 176 transitions, 1742 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:41,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:41,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:41,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:42,616 INFO L124 PetriNetUnfolderBase]: 2569/3885 cut-off events. [2024-06-28 02:50:42,616 INFO L125 PetriNetUnfolderBase]: For 163406/163413 co-relation queries the response was YES. [2024-06-28 02:50:42,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26117 conditions, 3885 events. 2569/3885 cut-off events. For 163406/163413 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19654 event pairs, 685 based on Foata normal form. 8/3890 useless extension candidates. Maximal degree in co-relation 26060. Up to 3172 conditions per place. [2024-06-28 02:50:42,641 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 125 selfloop transitions, 87 changer transitions 0/217 dead transitions. [2024-06-28 02:50:42,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 217 transitions, 2426 flow [2024-06-28 02:50:42,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 02:50:42,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 02:50:42,643 INFO L175 Difference]: Start difference. First operand has 131 places, 176 transitions, 1742 flow. Second operand 9 states and 188 transitions. [2024-06-28 02:50:42,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 217 transitions, 2426 flow [2024-06-28 02:50:42,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 217 transitions, 2262 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:42,781 INFO L231 Difference]: Finished difference. Result has 135 places, 176 transitions, 1760 flow [2024-06-28 02:50:42,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1760, PETRI_PLACES=135, PETRI_TRANSITIONS=176} [2024-06-28 02:50:42,782 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 90 predicate places. [2024-06-28 02:50:42,782 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 176 transitions, 1760 flow [2024-06-28 02:50:42,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:42,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:42,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:42,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:50:42,783 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:42,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash 751527316, now seen corresponding path program 3 times [2024-06-28 02:50:42,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:42,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216041141] [2024-06-28 02:50:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:42,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:43,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:43,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216041141] [2024-06-28 02:50:43,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216041141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:43,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:43,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:43,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212183455] [2024-06-28 02:50:43,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:43,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:43,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:43,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:43,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:44,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:44,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 176 transitions, 1760 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:44,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:44,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:44,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:45,102 INFO L124 PetriNetUnfolderBase]: 2580/3901 cut-off events. [2024-06-28 02:50:45,102 INFO L125 PetriNetUnfolderBase]: For 171685/171692 co-relation queries the response was YES. [2024-06-28 02:50:45,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26520 conditions, 3901 events. 2580/3901 cut-off events. For 171685/171692 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19708 event pairs, 756 based on Foata normal form. 8/3906 useless extension candidates. Maximal degree in co-relation 26462. Up to 3500 conditions per place. [2024-06-28 02:50:45,131 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 136 selfloop transitions, 75 changer transitions 0/216 dead transitions. [2024-06-28 02:50:45,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 216 transitions, 2472 flow [2024-06-28 02:50:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 02:50:45,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 02:50:45,133 INFO L175 Difference]: Start difference. First operand has 135 places, 176 transitions, 1760 flow. Second operand 9 states and 181 transitions. [2024-06-28 02:50:45,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 216 transitions, 2472 flow [2024-06-28 02:50:45,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 216 transitions, 2286 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:45,333 INFO L231 Difference]: Finished difference. Result has 136 places, 179 transitions, 1774 flow [2024-06-28 02:50:45,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1774, PETRI_PLACES=136, PETRI_TRANSITIONS=179} [2024-06-28 02:50:45,334 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 91 predicate places. [2024-06-28 02:50:45,334 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 179 transitions, 1774 flow [2024-06-28 02:50:45,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:45,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:45,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:45,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:50:45,334 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:45,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:45,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1270355666, now seen corresponding path program 4 times [2024-06-28 02:50:45,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:45,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15697882] [2024-06-28 02:50:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:45,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:46,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:46,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15697882] [2024-06-28 02:50:46,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15697882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:46,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:46,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112048089] [2024-06-28 02:50:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:46,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:46,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:46,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:46,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:46,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 179 transitions, 1774 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:46,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:46,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:46,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:47,515 INFO L124 PetriNetUnfolderBase]: 2634/3984 cut-off events. [2024-06-28 02:50:47,515 INFO L125 PetriNetUnfolderBase]: For 185233/185236 co-relation queries the response was YES. [2024-06-28 02:50:47,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27196 conditions, 3984 events. 2634/3984 cut-off events. For 185233/185236 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 20198 event pairs, 709 based on Foata normal form. 4/3985 useless extension candidates. Maximal degree in co-relation 27137. Up to 3234 conditions per place. [2024-06-28 02:50:47,547 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 127 selfloop transitions, 92 changer transitions 0/224 dead transitions. [2024-06-28 02:50:47,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 224 transitions, 2680 flow [2024-06-28 02:50:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:47,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:47,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 02:50:47,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 02:50:47,548 INFO L175 Difference]: Start difference. First operand has 136 places, 179 transitions, 1774 flow. Second operand 9 states and 188 transitions. [2024-06-28 02:50:47,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 224 transitions, 2680 flow [2024-06-28 02:50:47,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 224 transitions, 2539 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:47,793 INFO L231 Difference]: Finished difference. Result has 139 places, 185 transitions, 1907 flow [2024-06-28 02:50:47,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1907, PETRI_PLACES=139, PETRI_TRANSITIONS=185} [2024-06-28 02:50:47,794 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-06-28 02:50:47,794 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 185 transitions, 1907 flow [2024-06-28 02:50:47,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:47,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:47,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:47,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:50:47,795 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:47,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:47,795 INFO L85 PathProgramCache]: Analyzing trace with hash 924017206, now seen corresponding path program 4 times [2024-06-28 02:50:47,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:47,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418818303] [2024-06-28 02:50:47,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:47,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:48,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:48,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418818303] [2024-06-28 02:50:48,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418818303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:48,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:48,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:48,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344805921] [2024-06-28 02:50:48,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:48,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:48,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:48,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:48,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:48,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:48,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 185 transitions, 1907 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:48,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:48,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:48,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:49,945 INFO L124 PetriNetUnfolderBase]: 2645/4005 cut-off events. [2024-06-28 02:50:49,946 INFO L125 PetriNetUnfolderBase]: For 194977/194980 co-relation queries the response was YES. [2024-06-28 02:50:49,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27742 conditions, 4005 events. 2645/4005 cut-off events. For 194977/194980 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 20320 event pairs, 753 based on Foata normal form. 4/4006 useless extension candidates. Maximal degree in co-relation 27682. Up to 3590 conditions per place. [2024-06-28 02:50:49,982 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 142 selfloop transitions, 75 changer transitions 0/222 dead transitions. [2024-06-28 02:50:49,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 222 transitions, 2630 flow [2024-06-28 02:50:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 02:50:49,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-28 02:50:49,984 INFO L175 Difference]: Start difference. First operand has 139 places, 185 transitions, 1907 flow. Second operand 9 states and 179 transitions. [2024-06-28 02:50:49,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 222 transitions, 2630 flow [2024-06-28 02:50:50,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 222 transitions, 2483 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:50,239 INFO L231 Difference]: Finished difference. Result has 143 places, 188 transitions, 1963 flow [2024-06-28 02:50:50,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1963, PETRI_PLACES=143, PETRI_TRANSITIONS=188} [2024-06-28 02:50:50,240 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 98 predicate places. [2024-06-28 02:50:50,240 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 188 transitions, 1963 flow [2024-06-28 02:50:50,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:50,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:50,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:50,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:50:50,241 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:50,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1270592816, now seen corresponding path program 5 times [2024-06-28 02:50:50,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:50,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944413522] [2024-06-28 02:50:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:50,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:51,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:51,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944413522] [2024-06-28 02:50:51,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944413522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:51,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:51,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:51,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729403554] [2024-06-28 02:50:51,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:51,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:51,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:51,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:51,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:51,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:51,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 188 transitions, 1963 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:51,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:51,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:51,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:52,530 INFO L124 PetriNetUnfolderBase]: 2667/4037 cut-off events. [2024-06-28 02:50:52,530 INFO L125 PetriNetUnfolderBase]: For 206870/206873 co-relation queries the response was YES. [2024-06-28 02:50:52,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28048 conditions, 4037 events. 2667/4037 cut-off events. For 206870/206873 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 20500 event pairs, 707 based on Foata normal form. 4/4038 useless extension candidates. Maximal degree in co-relation 27987. Up to 3269 conditions per place. [2024-06-28 02:50:52,558 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 136 selfloop transitions, 91 changer transitions 0/232 dead transitions. [2024-06-28 02:50:52,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 232 transitions, 2867 flow [2024-06-28 02:50:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 190 transitions. [2024-06-28 02:50:52,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-28 02:50:52,559 INFO L175 Difference]: Start difference. First operand has 143 places, 188 transitions, 1963 flow. Second operand 9 states and 190 transitions. [2024-06-28 02:50:52,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 232 transitions, 2867 flow [2024-06-28 02:50:52,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 232 transitions, 2721 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:52,765 INFO L231 Difference]: Finished difference. Result has 146 places, 191 transitions, 2045 flow [2024-06-28 02:50:52,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1817, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2045, PETRI_PLACES=146, PETRI_TRANSITIONS=191} [2024-06-28 02:50:52,765 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 101 predicate places. [2024-06-28 02:50:52,766 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 191 transitions, 2045 flow [2024-06-28 02:50:52,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:52,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:52,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:52,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:50:52,766 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:52,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:52,767 INFO L85 PathProgramCache]: Analyzing trace with hash 893696956, now seen corresponding path program 6 times [2024-06-28 02:50:52,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:52,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364153404] [2024-06-28 02:50:52,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:52,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:53,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:53,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:53,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364153404] [2024-06-28 02:50:53,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364153404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:53,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:53,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:53,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644113967] [2024-06-28 02:50:53,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:53,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:53,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:53,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:53,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:53,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:53,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 191 transitions, 2045 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:53,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:53,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:53,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:54,923 INFO L124 PetriNetUnfolderBase]: 2657/4023 cut-off events. [2024-06-28 02:50:54,923 INFO L125 PetriNetUnfolderBase]: For 215660/215663 co-relation queries the response was YES. [2024-06-28 02:50:54,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28274 conditions, 4023 events. 2657/4023 cut-off events. For 215660/215663 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 20458 event pairs, 707 based on Foata normal form. 4/4024 useless extension candidates. Maximal degree in co-relation 28212. Up to 3261 conditions per place. [2024-06-28 02:50:54,956 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 135 selfloop transitions, 90 changer transitions 0/230 dead transitions. [2024-06-28 02:50:54,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 230 transitions, 2767 flow [2024-06-28 02:50:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2024-06-28 02:50:54,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-28 02:50:54,957 INFO L175 Difference]: Start difference. First operand has 146 places, 191 transitions, 2045 flow. Second operand 9 states and 189 transitions. [2024-06-28 02:50:54,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 230 transitions, 2767 flow [2024-06-28 02:50:55,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 230 transitions, 2563 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:55,140 INFO L231 Difference]: Finished difference. Result has 149 places, 191 transitions, 2029 flow [2024-06-28 02:50:55,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2029, PETRI_PLACES=149, PETRI_TRANSITIONS=191} [2024-06-28 02:50:55,143 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 104 predicate places. [2024-06-28 02:50:55,143 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 191 transitions, 2029 flow [2024-06-28 02:50:55,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:55,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:55,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:55,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:50:55,144 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:55,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash 519464384, now seen corresponding path program 1 times [2024-06-28 02:50:55,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:55,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333620455] [2024-06-28 02:50:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:55,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:55,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:55,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333620455] [2024-06-28 02:50:55,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333620455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:55,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:55,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:50:55,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675488635] [2024-06-28 02:50:55,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:55,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:50:55,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:50:55,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:50:56,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 02:50:56,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 191 transitions, 2029 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:56,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:56,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 02:50:56,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:56,662 INFO L124 PetriNetUnfolderBase]: 2195/3552 cut-off events. [2024-06-28 02:50:56,662 INFO L125 PetriNetUnfolderBase]: For 221997/222001 co-relation queries the response was YES. [2024-06-28 02:50:56,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25854 conditions, 3552 events. 2195/3552 cut-off events. For 221997/222001 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19783 event pairs, 708 based on Foata normal form. 5/3551 useless extension candidates. Maximal degree in co-relation 25791. Up to 3040 conditions per place. [2024-06-28 02:50:56,694 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 136 selfloop transitions, 13 changer transitions 0/210 dead transitions. [2024-06-28 02:50:56,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 210 transitions, 2409 flow [2024-06-28 02:50:56,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:50:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:50:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-28 02:50:56,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-06-28 02:50:56,695 INFO L175 Difference]: Start difference. First operand has 149 places, 191 transitions, 2029 flow. Second operand 6 states and 129 transitions. [2024-06-28 02:50:56,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 210 transitions, 2409 flow [2024-06-28 02:50:56,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 210 transitions, 2186 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:56,969 INFO L231 Difference]: Finished difference. Result has 146 places, 194 transitions, 1873 flow [2024-06-28 02:50:56,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1873, PETRI_PLACES=146, PETRI_TRANSITIONS=194} [2024-06-28 02:50:56,969 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 101 predicate places. [2024-06-28 02:50:56,970 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 194 transitions, 1873 flow [2024-06-28 02:50:56,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:56,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:56,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:56,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:50:56,970 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:56,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash 255508814, now seen corresponding path program 7 times [2024-06-28 02:50:56,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:56,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401261274] [2024-06-28 02:50:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:58,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:58,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401261274] [2024-06-28 02:50:58,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401261274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:58,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:58,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:50:58,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300814245] [2024-06-28 02:50:58,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:58,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:50:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:58,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:50:58,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:50:58,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:50:58,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 194 transitions, 1873 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:58,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:58,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:50:58,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:59,180 INFO L124 PetriNetUnfolderBase]: 2716/4123 cut-off events. [2024-06-28 02:50:59,180 INFO L125 PetriNetUnfolderBase]: For 239186/239189 co-relation queries the response was YES. [2024-06-28 02:50:59,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29307 conditions, 4123 events. 2716/4123 cut-off events. For 239186/239189 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 21102 event pairs, 723 based on Foata normal form. 6/4116 useless extension candidates. Maximal degree in co-relation 29243. Up to 3314 conditions per place. [2024-06-28 02:50:59,215 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 137 selfloop transitions, 96 changer transitions 0/238 dead transitions. [2024-06-28 02:50:59,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 238 transitions, 2849 flow [2024-06-28 02:50:59,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:59,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-28 02:50:59,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 02:50:59,216 INFO L175 Difference]: Start difference. First operand has 146 places, 194 transitions, 1873 flow. Second operand 9 states and 187 transitions. [2024-06-28 02:50:59,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 238 transitions, 2849 flow [2024-06-28 02:50:59,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 238 transitions, 2806 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 02:50:59,417 INFO L231 Difference]: Finished difference. Result has 151 places, 200 transitions, 2118 flow [2024-06-28 02:50:59,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1830, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2118, PETRI_PLACES=151, PETRI_TRANSITIONS=200} [2024-06-28 02:50:59,418 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 106 predicate places. [2024-06-28 02:50:59,418 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 200 transitions, 2118 flow [2024-06-28 02:50:59,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:50:59,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:59,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:59,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:50:59,418 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:50:59,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash 263552384, now seen corresponding path program 8 times [2024-06-28 02:50:59,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:59,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679917850] [2024-06-28 02:50:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:59,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:00,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:00,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679917850] [2024-06-28 02:51:00,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679917850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:00,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:00,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:51:00,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013506663] [2024-06-28 02:51:00,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:00,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:51:00,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:00,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:51:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:51:00,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:00,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 200 transitions, 2118 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:51:00,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:00,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:00,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:01,595 INFO L124 PetriNetUnfolderBase]: 2706/4109 cut-off events. [2024-06-28 02:51:01,595 INFO L125 PetriNetUnfolderBase]: For 248822/248825 co-relation queries the response was YES. [2024-06-28 02:51:01,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29779 conditions, 4109 events. 2706/4109 cut-off events. For 248822/248825 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 21045 event pairs, 721 based on Foata normal form. 6/4102 useless extension candidates. Maximal degree in co-relation 29714. Up to 3306 conditions per place. [2024-06-28 02:51:01,625 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 122 selfloop transitions, 107 changer transitions 0/234 dead transitions. [2024-06-28 02:51:01,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 234 transitions, 2838 flow [2024-06-28 02:51:01,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 02:51:01,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 02:51:01,626 INFO L175 Difference]: Start difference. First operand has 151 places, 200 transitions, 2118 flow. Second operand 9 states and 181 transitions. [2024-06-28 02:51:01,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 234 transitions, 2838 flow [2024-06-28 02:51:01,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 234 transitions, 2594 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:01,846 INFO L231 Difference]: Finished difference. Result has 154 places, 200 transitions, 2096 flow [2024-06-28 02:51:01,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2096, PETRI_PLACES=154, PETRI_TRANSITIONS=200} [2024-06-28 02:51:01,847 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 109 predicate places. [2024-06-28 02:51:01,847 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 200 transitions, 2096 flow [2024-06-28 02:51:01,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:51:01,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:01,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:01,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:51:01,848 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:01,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash 255271478, now seen corresponding path program 5 times [2024-06-28 02:51:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:01,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528147621] [2024-06-28 02:51:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:01,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:02,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:02,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:02,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528147621] [2024-06-28 02:51:02,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528147621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:02,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:02,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:51:02,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824847049] [2024-06-28 02:51:02,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:02,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:51:02,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:02,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:51:02,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:51:02,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:02,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 200 transitions, 2096 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:51:02,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:02,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:02,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:03,964 INFO L124 PetriNetUnfolderBase]: 2701/4095 cut-off events. [2024-06-28 02:51:03,964 INFO L125 PetriNetUnfolderBase]: For 256258/256258 co-relation queries the response was YES. [2024-06-28 02:51:03,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29921 conditions, 4095 events. 2701/4095 cut-off events. For 256258/256258 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20805 event pairs, 780 based on Foata normal form. 2/4082 useless extension candidates. Maximal degree in co-relation 29855. Up to 3674 conditions per place. [2024-06-28 02:51:03,995 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 148 selfloop transitions, 75 changer transitions 0/228 dead transitions. [2024-06-28 02:51:03,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 228 transitions, 2634 flow [2024-06-28 02:51:03,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:03,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:03,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 02:51:03,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 02:51:03,997 INFO L175 Difference]: Start difference. First operand has 154 places, 200 transitions, 2096 flow. Second operand 9 states and 174 transitions. [2024-06-28 02:51:03,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 228 transitions, 2634 flow [2024-06-28 02:51:04,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 228 transitions, 2373 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:04,221 INFO L231 Difference]: Finished difference. Result has 155 places, 200 transitions, 1993 flow [2024-06-28 02:51:04,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1993, PETRI_PLACES=155, PETRI_TRANSITIONS=200} [2024-06-28 02:51:04,222 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 110 predicate places. [2024-06-28 02:51:04,222 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 200 transitions, 1993 flow [2024-06-28 02:51:04,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:51:04,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:04,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:04,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:51:04,222 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:04,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:04,222 INFO L85 PathProgramCache]: Analyzing trace with hash 255271664, now seen corresponding path program 9 times [2024-06-28 02:51:04,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:04,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341463140] [2024-06-28 02:51:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:04,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:05,202 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 02:51:05,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:05,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341463140] [2024-06-28 02:51:05,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341463140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:05,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:05,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:51:05,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781912074] [2024-06-28 02:51:05,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:05,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:51:05,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:05,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:51:05,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:51:05,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:05,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 200 transitions, 1993 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:51:05,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:05,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:05,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:06,360 INFO L124 PetriNetUnfolderBase]: 2723/4134 cut-off events. [2024-06-28 02:51:06,360 INFO L125 PetriNetUnfolderBase]: For 269300/269303 co-relation queries the response was YES. [2024-06-28 02:51:06,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30091 conditions, 4134 events. 2723/4134 cut-off events. For 269300/269303 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 21173 event pairs, 707 based on Foata normal form. 6/4127 useless extension candidates. Maximal degree in co-relation 30024. Up to 3318 conditions per place. [2024-06-28 02:51:06,396 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 133 selfloop transitions, 102 changer transitions 0/240 dead transitions. [2024-06-28 02:51:06,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 240 transitions, 2787 flow [2024-06-28 02:51:06,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:06,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:06,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 02:51:06,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 02:51:06,397 INFO L175 Difference]: Start difference. First operand has 155 places, 200 transitions, 1993 flow. Second operand 9 states and 183 transitions. [2024-06-28 02:51:06,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 240 transitions, 2787 flow [2024-06-28 02:51:06,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 240 transitions, 2533 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 02:51:06,656 INFO L231 Difference]: Finished difference. Result has 154 places, 203 transitions, 1989 flow [2024-06-28 02:51:06,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1989, PETRI_PLACES=154, PETRI_TRANSITIONS=203} [2024-06-28 02:51:06,656 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 109 predicate places. [2024-06-28 02:51:06,656 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 203 transitions, 1989 flow [2024-06-28 02:51:06,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:51:06,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:06,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:06,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:51:06,657 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:06,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:06,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1258953146, now seen corresponding path program 10 times [2024-06-28 02:51:06,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:06,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542649172] [2024-06-28 02:51:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:06,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:07,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:07,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542649172] [2024-06-28 02:51:07,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542649172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:07,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:07,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:51:07,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35315354] [2024-06-28 02:51:07,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:07,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:51:07,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:07,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:51:07,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:51:07,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:07,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 203 transitions, 1989 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:51:07,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:07,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:07,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:08,821 INFO L124 PetriNetUnfolderBase]: 2713/4120 cut-off events. [2024-06-28 02:51:08,821 INFO L125 PetriNetUnfolderBase]: For 277503/277506 co-relation queries the response was YES. [2024-06-28 02:51:08,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30277 conditions, 4120 events. 2713/4120 cut-off events. For 277503/277506 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 21035 event pairs, 707 based on Foata normal form. 6/4113 useless extension candidates. Maximal degree in co-relation 30209. Up to 3310 conditions per place. [2024-06-28 02:51:08,858 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 133 selfloop transitions, 100 changer transitions 0/238 dead transitions. [2024-06-28 02:51:08,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 238 transitions, 2575 flow [2024-06-28 02:51:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:51:08,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:51:08,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 02:51:08,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 02:51:08,861 INFO L175 Difference]: Start difference. First operand has 154 places, 203 transitions, 1989 flow. Second operand 9 states and 182 transitions. [2024-06-28 02:51:08,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 238 transitions, 2575 flow [2024-06-28 02:51:09,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 238 transitions, 2241 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:09,118 INFO L231 Difference]: Finished difference. Result has 155 places, 203 transitions, 1863 flow [2024-06-28 02:51:09,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1863, PETRI_PLACES=155, PETRI_TRANSITIONS=203} [2024-06-28 02:51:09,118 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 110 predicate places. [2024-06-28 02:51:09,118 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 203 transitions, 1863 flow [2024-06-28 02:51:09,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 02:51:09,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:09,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:09,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:51:09,119 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:09,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash 533749184, now seen corresponding path program 2 times [2024-06-28 02:51:09,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:09,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202476351] [2024-06-28 02:51:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:10,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:10,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202476351] [2024-06-28 02:51:10,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202476351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:10,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:10,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:51:10,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011640347] [2024-06-28 02:51:10,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:10,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:51:10,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:51:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:51:10,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 02:51:10,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 203 transitions, 1863 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:10,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:10,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 02:51:10,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:10,765 INFO L124 PetriNetUnfolderBase]: 2207/3589 cut-off events. [2024-06-28 02:51:10,765 INFO L125 PetriNetUnfolderBase]: For 282852/282867 co-relation queries the response was YES. [2024-06-28 02:51:10,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27423 conditions, 3589 events. 2207/3589 cut-off events. For 282852/282867 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 20159 event pairs, 711 based on Foata normal form. 11/3586 useless extension candidates. Maximal degree in co-relation 27354. Up to 3051 conditions per place. [2024-06-28 02:51:10,793 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 135 selfloop transitions, 18 changer transitions 0/217 dead transitions. [2024-06-28 02:51:10,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 217 transitions, 2241 flow [2024-06-28 02:51:10,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:51:10,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:51:10,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-28 02:51:10,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734848484848485 [2024-06-28 02:51:10,794 INFO L175 Difference]: Start difference. First operand has 155 places, 203 transitions, 1863 flow. Second operand 6 states and 125 transitions. [2024-06-28 02:51:10,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 217 transitions, 2241 flow [2024-06-28 02:51:11,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 217 transitions, 2010 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:11,022 INFO L231 Difference]: Finished difference. Result has 152 places, 206 transitions, 1714 flow [2024-06-28 02:51:11,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1714, PETRI_PLACES=152, PETRI_TRANSITIONS=206} [2024-06-28 02:51:11,023 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 107 predicate places. [2024-06-28 02:51:11,023 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 206 transitions, 1714 flow [2024-06-28 02:51:11,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:11,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:11,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:11,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:51:11,023 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:11,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:11,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1486869152, now seen corresponding path program 1 times [2024-06-28 02:51:11,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:11,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801687939] [2024-06-28 02:51:11,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:11,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:11,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:11,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801687939] [2024-06-28 02:51:11,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801687939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:11,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:11,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:11,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719983525] [2024-06-28 02:51:11,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:11,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:11,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:11,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:11,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:11,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:51:11,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 206 transitions, 1714 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:11,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:11,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:51:11,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:12,681 INFO L124 PetriNetUnfolderBase]: 2260/3613 cut-off events. [2024-06-28 02:51:12,682 INFO L125 PetriNetUnfolderBase]: For 258782/258794 co-relation queries the response was YES. [2024-06-28 02:51:12,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26322 conditions, 3613 events. 2260/3613 cut-off events. For 258782/258794 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 19699 event pairs, 995 based on Foata normal form. 13/3589 useless extension candidates. Maximal degree in co-relation 26252. Up to 3275 conditions per place. [2024-06-28 02:51:12,716 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 184 selfloop transitions, 13 changer transitions 0/222 dead transitions. [2024-06-28 02:51:12,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 222 transitions, 2188 flow [2024-06-28 02:51:12,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:12,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-28 02:51:12,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-06-28 02:51:12,718 INFO L175 Difference]: Start difference. First operand has 152 places, 206 transitions, 1714 flow. Second operand 7 states and 134 transitions. [2024-06-28 02:51:12,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 222 transitions, 2188 flow [2024-06-28 02:51:13,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 222 transitions, 2128 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 02:51:13,020 INFO L231 Difference]: Finished difference. Result has 156 places, 211 transitions, 1745 flow [2024-06-28 02:51:13,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1654, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1745, PETRI_PLACES=156, PETRI_TRANSITIONS=211} [2024-06-28 02:51:13,020 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 111 predicate places. [2024-06-28 02:51:13,020 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 211 transitions, 1745 flow [2024-06-28 02:51:13,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:13,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:13,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:13,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:51:13,021 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:13,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:13,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1487048642, now seen corresponding path program 2 times [2024-06-28 02:51:13,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:13,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599948414] [2024-06-28 02:51:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:13,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:14,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:14,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599948414] [2024-06-28 02:51:14,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599948414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:14,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:14,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:14,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581488921] [2024-06-28 02:51:14,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:14,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:14,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:14,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:14,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:14,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:51:14,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 211 transitions, 1745 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:14,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:14,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:51:14,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:14,706 INFO L124 PetriNetUnfolderBase]: 2276/3620 cut-off events. [2024-06-28 02:51:14,706 INFO L125 PetriNetUnfolderBase]: For 269487/269510 co-relation queries the response was YES. [2024-06-28 02:51:14,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26862 conditions, 3620 events. 2276/3620 cut-off events. For 269487/269510 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 19661 event pairs, 999 based on Foata normal form. 23/3601 useless extension candidates. Maximal degree in co-relation 26790. Up to 3282 conditions per place. [2024-06-28 02:51:14,736 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 179 selfloop transitions, 18 changer transitions 0/222 dead transitions. [2024-06-28 02:51:14,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 222 transitions, 2203 flow [2024-06-28 02:51:14,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:51:14,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:51:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 02:51:14,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 02:51:14,738 INFO L175 Difference]: Start difference. First operand has 156 places, 211 transitions, 1745 flow. Second operand 7 states and 133 transitions. [2024-06-28 02:51:14,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 222 transitions, 2203 flow [2024-06-28 02:51:15,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 222 transitions, 2151 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:51:15,044 INFO L231 Difference]: Finished difference. Result has 159 places, 214 transitions, 1783 flow [2024-06-28 02:51:15,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1783, PETRI_PLACES=159, PETRI_TRANSITIONS=214} [2024-06-28 02:51:15,045 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 114 predicate places. [2024-06-28 02:51:15,045 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 214 transitions, 1783 flow [2024-06-28 02:51:15,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:15,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:15,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:15,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:51:15,045 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:15,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:15,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1382758770, now seen corresponding path program 1 times [2024-06-28 02:51:15,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:15,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074752466] [2024-06-28 02:51:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:15,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:16,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:16,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074752466] [2024-06-28 02:51:16,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074752466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:16,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:16,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:16,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610575212] [2024-06-28 02:51:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:16,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:16,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:16,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:16,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:16,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:16,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 214 transitions, 1783 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:16,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:16,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:16,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:17,258 INFO L124 PetriNetUnfolderBase]: 2800/4262 cut-off events. [2024-06-28 02:51:17,258 INFO L125 PetriNetUnfolderBase]: For 322105/322111 co-relation queries the response was YES. [2024-06-28 02:51:17,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32230 conditions, 4262 events. 2800/4262 cut-off events. For 322105/322111 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 21961 event pairs, 1063 based on Foata normal form. 10/4270 useless extension candidates. Maximal degree in co-relation 32157. Up to 3963 conditions per place. [2024-06-28 02:51:17,296 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 230 selfloop transitions, 47 changer transitions 0/282 dead transitions. [2024-06-28 02:51:17,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 282 transitions, 2670 flow [2024-06-28 02:51:17,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:17,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:17,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 02:51:17,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44214876033057854 [2024-06-28 02:51:17,298 INFO L175 Difference]: Start difference. First operand has 159 places, 214 transitions, 1783 flow. Second operand 11 states and 214 transitions. [2024-06-28 02:51:17,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 282 transitions, 2670 flow [2024-06-28 02:51:17,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 282 transitions, 2602 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 02:51:17,833 INFO L231 Difference]: Finished difference. Result has 169 places, 239 transitions, 2075 flow [2024-06-28 02:51:17,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1715, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2075, PETRI_PLACES=169, PETRI_TRANSITIONS=239} [2024-06-28 02:51:17,834 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 124 predicate places. [2024-06-28 02:51:17,834 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 239 transitions, 2075 flow [2024-06-28 02:51:17,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:17,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:17,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:17,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:51:17,835 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:17,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:17,835 INFO L85 PathProgramCache]: Analyzing trace with hash 482668204, now seen corresponding path program 2 times [2024-06-28 02:51:17,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:17,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905761095] [2024-06-28 02:51:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:17,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:18,706 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 02:51:18,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:18,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905761095] [2024-06-28 02:51:18,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905761095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:18,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:18,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:18,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197691129] [2024-06-28 02:51:18,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:18,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:18,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:18,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:18,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:18,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:18,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 239 transitions, 2075 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:18,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:18,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:18,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:20,067 INFO L124 PetriNetUnfolderBase]: 2953/4509 cut-off events. [2024-06-28 02:51:20,067 INFO L125 PetriNetUnfolderBase]: For 348311/348319 co-relation queries the response was YES. [2024-06-28 02:51:20,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34970 conditions, 4509 events. 2953/4509 cut-off events. For 348311/348319 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 23697 event pairs, 1035 based on Foata normal form. 12/4519 useless extension candidates. Maximal degree in co-relation 34892. Up to 4069 conditions per place. [2024-06-28 02:51:20,111 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 244 selfloop transitions, 82 changer transitions 0/331 dead transitions. [2024-06-28 02:51:20,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 331 transitions, 3661 flow [2024-06-28 02:51:20,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:51:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:51:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 253 transitions. [2024-06-28 02:51:20,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4423076923076923 [2024-06-28 02:51:20,112 INFO L175 Difference]: Start difference. First operand has 169 places, 239 transitions, 2075 flow. Second operand 13 states and 253 transitions. [2024-06-28 02:51:20,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 331 transitions, 3661 flow [2024-06-28 02:51:20,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 331 transitions, 3457 flow, removed 71 selfloop flow, removed 4 redundant places. [2024-06-28 02:51:20,546 INFO L231 Difference]: Finished difference. Result has 181 places, 274 transitions, 2555 flow [2024-06-28 02:51:20,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1980, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2555, PETRI_PLACES=181, PETRI_TRANSITIONS=274} [2024-06-28 02:51:20,546 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 136 predicate places. [2024-06-28 02:51:20,546 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 274 transitions, 2555 flow [2024-06-28 02:51:20,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:20,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:20,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:20,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:51:20,547 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:20,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:20,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1311347366, now seen corresponding path program 3 times [2024-06-28 02:51:20,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:20,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96427453] [2024-06-28 02:51:20,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:20,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:21,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:21,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96427453] [2024-06-28 02:51:21,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96427453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:21,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:21,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:21,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056966425] [2024-06-28 02:51:21,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:21,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:21,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:21,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 274 transitions, 2555 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:21,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:21,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:21,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:22,589 INFO L124 PetriNetUnfolderBase]: 3070/4698 cut-off events. [2024-06-28 02:51:22,589 INFO L125 PetriNetUnfolderBase]: For 367858/367866 co-relation queries the response was YES. [2024-06-28 02:51:22,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36983 conditions, 4698 events. 3070/4698 cut-off events. For 367858/367866 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 24990 event pairs, 1086 based on Foata normal form. 14/4710 useless extension candidates. Maximal degree in co-relation 36901. Up to 4293 conditions per place. [2024-06-28 02:51:22,635 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 264 selfloop transitions, 83 changer transitions 0/352 dead transitions. [2024-06-28 02:51:22,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 352 transitions, 3880 flow [2024-06-28 02:51:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:22,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 02:51:22,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44214876033057854 [2024-06-28 02:51:22,639 INFO L175 Difference]: Start difference. First operand has 181 places, 274 transitions, 2555 flow. Second operand 11 states and 214 transitions. [2024-06-28 02:51:22,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 352 transitions, 3880 flow [2024-06-28 02:51:23,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 352 transitions, 3627 flow, removed 92 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:23,088 INFO L231 Difference]: Finished difference. Result has 189 places, 310 transitions, 3068 flow [2024-06-28 02:51:23,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2406, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3068, PETRI_PLACES=189, PETRI_TRANSITIONS=310} [2024-06-28 02:51:23,088 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 144 predicate places. [2024-06-28 02:51:23,088 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 310 transitions, 3068 flow [2024-06-28 02:51:23,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:23,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:23,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:23,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:51:23,089 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:23,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:23,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1478727748, now seen corresponding path program 4 times [2024-06-28 02:51:23,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:23,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306334805] [2024-06-28 02:51:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:23,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:23,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:23,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306334805] [2024-06-28 02:51:23,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306334805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:23,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:23,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:23,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105460045] [2024-06-28 02:51:23,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:23,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:23,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:23,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:23,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:24,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:24,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 310 transitions, 3068 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:24,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:24,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:24,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:25,340 INFO L124 PetriNetUnfolderBase]: 3384/5191 cut-off events. [2024-06-28 02:51:25,340 INFO L125 PetriNetUnfolderBase]: For 388920/388927 co-relation queries the response was YES. [2024-06-28 02:51:25,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40029 conditions, 5191 events. 3384/5191 cut-off events. For 388920/388927 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 28360 event pairs, 869 based on Foata normal form. 8/5196 useless extension candidates. Maximal degree in co-relation 39942. Up to 3550 conditions per place. [2024-06-28 02:51:25,392 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 193 selfloop transitions, 244 changer transitions 0/442 dead transitions. [2024-06-28 02:51:25,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 442 transitions, 5292 flow [2024-06-28 02:51:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:25,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2024-06-28 02:51:25,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49173553719008267 [2024-06-28 02:51:25,394 INFO L175 Difference]: Start difference. First operand has 189 places, 310 transitions, 3068 flow. Second operand 11 states and 238 transitions. [2024-06-28 02:51:25,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 442 transitions, 5292 flow [2024-06-28 02:51:25,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 442 transitions, 5140 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 02:51:25,858 INFO L231 Difference]: Finished difference. Result has 198 places, 364 transitions, 4042 flow [2024-06-28 02:51:25,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2916, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4042, PETRI_PLACES=198, PETRI_TRANSITIONS=364} [2024-06-28 02:51:25,859 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 153 predicate places. [2024-06-28 02:51:25,859 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 364 transitions, 4042 flow [2024-06-28 02:51:25,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:25,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:25,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:25,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:51:25,860 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:25,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:25,860 INFO L85 PathProgramCache]: Analyzing trace with hash 76470958, now seen corresponding path program 5 times [2024-06-28 02:51:25,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:25,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196068633] [2024-06-28 02:51:25,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:25,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:26,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:26,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:26,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196068633] [2024-06-28 02:51:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196068633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:26,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:26,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:26,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469592348] [2024-06-28 02:51:26,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:26,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:26,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:26,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:26,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:26,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:26,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 364 transitions, 4042 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:26,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:26,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:26,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:28,166 INFO L124 PetriNetUnfolderBase]: 3374/5178 cut-off events. [2024-06-28 02:51:28,167 INFO L125 PetriNetUnfolderBase]: For 403652/403659 co-relation queries the response was YES. [2024-06-28 02:51:28,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41586 conditions, 5178 events. 3374/5178 cut-off events. For 403652/403659 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 28347 event pairs, 863 based on Foata normal form. 8/5183 useless extension candidates. Maximal degree in co-relation 41495. Up to 3542 conditions per place. [2024-06-28 02:51:28,220 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 186 selfloop transitions, 249 changer transitions 0/440 dead transitions. [2024-06-28 02:51:28,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 440 transitions, 5613 flow [2024-06-28 02:51:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 234 transitions. [2024-06-28 02:51:28,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4834710743801653 [2024-06-28 02:51:28,221 INFO L175 Difference]: Start difference. First operand has 198 places, 364 transitions, 4042 flow. Second operand 11 states and 234 transitions. [2024-06-28 02:51:28,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 440 transitions, 5613 flow [2024-06-28 02:51:29,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 440 transitions, 5377 flow, removed 72 selfloop flow, removed 4 redundant places. [2024-06-28 02:51:29,015 INFO L231 Difference]: Finished difference. Result has 206 places, 365 transitions, 4351 flow [2024-06-28 02:51:29,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3806, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4351, PETRI_PLACES=206, PETRI_TRANSITIONS=365} [2024-06-28 02:51:29,015 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 161 predicate places. [2024-06-28 02:51:29,016 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 365 transitions, 4351 flow [2024-06-28 02:51:29,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:29,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:29,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:29,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:51:29,016 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:29,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:29,017 INFO L85 PathProgramCache]: Analyzing trace with hash -180032754, now seen corresponding path program 6 times [2024-06-28 02:51:29,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:29,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413437104] [2024-06-28 02:51:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:29,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:29,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:29,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413437104] [2024-06-28 02:51:29,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413437104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:29,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:29,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:29,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400713271] [2024-06-28 02:51:29,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:29,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:29,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:29,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:29,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:30,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:30,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 365 transitions, 4351 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:30,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:30,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:30,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:31,579 INFO L124 PetriNetUnfolderBase]: 3982/6177 cut-off events. [2024-06-28 02:51:31,579 INFO L125 PetriNetUnfolderBase]: For 441351/441358 co-relation queries the response was YES. [2024-06-28 02:51:31,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48215 conditions, 6177 events. 3982/6177 cut-off events. For 441351/441358 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 35647 event pairs, 1010 based on Foata normal form. 10/6184 useless extension candidates. Maximal degree in co-relation 48121. Up to 3895 conditions per place. [2024-06-28 02:51:31,641 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 233 selfloop transitions, 329 changer transitions 0/567 dead transitions. [2024-06-28 02:51:31,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 567 transitions, 7961 flow [2024-06-28 02:51:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 241 transitions. [2024-06-28 02:51:31,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49793388429752067 [2024-06-28 02:51:31,642 INFO L175 Difference]: Start difference. First operand has 206 places, 365 transitions, 4351 flow. Second operand 11 states and 241 transitions. [2024-06-28 02:51:31,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 567 transitions, 7961 flow [2024-06-28 02:51:32,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 567 transitions, 7462 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:32,689 INFO L231 Difference]: Finished difference. Result has 215 places, 470 transitions, 6099 flow [2024-06-28 02:51:32,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3991, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6099, PETRI_PLACES=215, PETRI_TRANSITIONS=470} [2024-06-28 02:51:32,689 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 170 predicate places. [2024-06-28 02:51:32,689 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 470 transitions, 6099 flow [2024-06-28 02:51:32,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:32,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:32,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:32,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:51:32,690 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:32,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:32,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1369695658, now seen corresponding path program 7 times [2024-06-28 02:51:32,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:32,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672844074] [2024-06-28 02:51:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:32,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:33,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:33,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672844074] [2024-06-28 02:51:33,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672844074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:33,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:33,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:33,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261144274] [2024-06-28 02:51:33,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:33,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:33,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:33,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:33,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:33,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:33,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 470 transitions, 6099 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:33,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:33,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:33,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:35,348 INFO L124 PetriNetUnfolderBase]: 3966/6154 cut-off events. [2024-06-28 02:51:35,348 INFO L125 PetriNetUnfolderBase]: For 453163/453170 co-relation queries the response was YES. [2024-06-28 02:51:35,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49355 conditions, 6154 events. 3966/6154 cut-off events. For 453163/453170 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 35456 event pairs, 1001 based on Foata normal form. 10/6161 useless extension candidates. Maximal degree in co-relation 49256. Up to 3882 conditions per place. [2024-06-28 02:51:35,422 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 228 selfloop transitions, 332 changer transitions 0/565 dead transitions. [2024-06-28 02:51:35,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 565 transitions, 8265 flow [2024-06-28 02:51:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:35,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 237 transitions. [2024-06-28 02:51:35,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4896694214876033 [2024-06-28 02:51:35,423 INFO L175 Difference]: Start difference. First operand has 215 places, 470 transitions, 6099 flow. Second operand 11 states and 237 transitions. [2024-06-28 02:51:35,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 565 transitions, 8265 flow [2024-06-28 02:51:36,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 565 transitions, 7771 flow, removed 88 selfloop flow, removed 4 redundant places. [2024-06-28 02:51:36,493 INFO L231 Difference]: Finished difference. Result has 223 places, 472 transitions, 6338 flow [2024-06-28 02:51:36,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5605, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6338, PETRI_PLACES=223, PETRI_TRANSITIONS=472} [2024-06-28 02:51:36,493 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 178 predicate places. [2024-06-28 02:51:36,493 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 472 transitions, 6338 flow [2024-06-28 02:51:36,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:36,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:36,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:36,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:51:36,494 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:36,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:36,494 INFO L85 PathProgramCache]: Analyzing trace with hash 484323866, now seen corresponding path program 8 times [2024-06-28 02:51:36,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:36,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923746664] [2024-06-28 02:51:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:36,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:37,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:37,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923746664] [2024-06-28 02:51:37,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923746664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:37,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:37,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:37,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698488928] [2024-06-28 02:51:37,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:37,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:37,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:37,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:37,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:37,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:37,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 472 transitions, 6338 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:37,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:37,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:37,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:39,292 INFO L124 PetriNetUnfolderBase]: 4144/6430 cut-off events. [2024-06-28 02:51:39,293 INFO L125 PetriNetUnfolderBase]: For 488213/488218 co-relation queries the response was YES. [2024-06-28 02:51:39,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52005 conditions, 6430 events. 4144/6430 cut-off events. For 488213/488218 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 37340 event pairs, 987 based on Foata normal form. 8/6435 useless extension candidates. Maximal degree in co-relation 51904. Up to 4009 conditions per place. [2024-06-28 02:51:39,356 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 232 selfloop transitions, 348 changer transitions 0/585 dead transitions. [2024-06-28 02:51:39,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 585 transitions, 9234 flow [2024-06-28 02:51:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:39,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 240 transitions. [2024-06-28 02:51:39,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49586776859504134 [2024-06-28 02:51:39,358 INFO L175 Difference]: Start difference. First operand has 223 places, 472 transitions, 6338 flow. Second operand 11 states and 240 transitions. [2024-06-28 02:51:39,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 585 transitions, 9234 flow [2024-06-28 02:51:40,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 585 transitions, 8671 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:40,297 INFO L231 Difference]: Finished difference. Result has 231 places, 504 transitions, 7190 flow [2024-06-28 02:51:40,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5808, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7190, PETRI_PLACES=231, PETRI_TRANSITIONS=504} [2024-06-28 02:51:40,298 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 186 predicate places. [2024-06-28 02:51:40,299 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 504 transitions, 7190 flow [2024-06-28 02:51:40,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:40,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:40,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:40,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:51:40,299 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:40,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:40,300 INFO L85 PathProgramCache]: Analyzing trace with hash -36142224, now seen corresponding path program 9 times [2024-06-28 02:51:40,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:40,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544839773] [2024-06-28 02:51:40,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:40,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544839773] [2024-06-28 02:51:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544839773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:41,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:41,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959953865] [2024-06-28 02:51:41,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:41,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:41,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:41,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:41,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 504 transitions, 7190 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:41,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:41,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:41,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:43,113 INFO L124 PetriNetUnfolderBase]: 4128/6407 cut-off events. [2024-06-28 02:51:43,113 INFO L125 PetriNetUnfolderBase]: For 499395/499400 co-relation queries the response was YES. [2024-06-28 02:51:43,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52526 conditions, 6407 events. 4128/6407 cut-off events. For 499395/499400 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 37251 event pairs, 981 based on Foata normal form. 8/6412 useless extension candidates. Maximal degree in co-relation 52421. Up to 3996 conditions per place. [2024-06-28 02:51:43,192 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 229 selfloop transitions, 349 changer transitions 0/583 dead transitions. [2024-06-28 02:51:43,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 583 transitions, 9330 flow [2024-06-28 02:51:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 237 transitions. [2024-06-28 02:51:43,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4896694214876033 [2024-06-28 02:51:43,193 INFO L175 Difference]: Start difference. First operand has 231 places, 504 transitions, 7190 flow. Second operand 11 states and 237 transitions. [2024-06-28 02:51:43,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 583 transitions, 9330 flow [2024-06-28 02:51:44,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 583 transitions, 8798 flow, removed 94 selfloop flow, removed 4 redundant places. [2024-06-28 02:51:44,345 INFO L231 Difference]: Finished difference. Result has 239 places, 506 transitions, 7400 flow [2024-06-28 02:51:44,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6658, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7400, PETRI_PLACES=239, PETRI_TRANSITIONS=506} [2024-06-28 02:51:44,346 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 194 predicate places. [2024-06-28 02:51:44,347 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 506 transitions, 7400 flow [2024-06-28 02:51:44,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:44,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:44,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:44,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:51:44,347 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:44,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:44,348 INFO L85 PathProgramCache]: Analyzing trace with hash -35934834, now seen corresponding path program 10 times [2024-06-28 02:51:44,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:44,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153408883] [2024-06-28 02:51:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:44,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:45,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:45,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153408883] [2024-06-28 02:51:45,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153408883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:45,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:45,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:45,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865993416] [2024-06-28 02:51:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:45,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:45,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:45,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:45,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 506 transitions, 7400 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:45,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:45,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:45,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:47,035 INFO L124 PetriNetUnfolderBase]: 4112/6393 cut-off events. [2024-06-28 02:51:47,035 INFO L125 PetriNetUnfolderBase]: For 509570/509575 co-relation queries the response was YES. [2024-06-28 02:51:47,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52229 conditions, 6393 events. 4112/6393 cut-off events. For 509570/509575 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 37257 event pairs, 956 based on Foata normal form. 8/6398 useless extension candidates. Maximal degree in co-relation 52122. Up to 3983 conditions per place. [2024-06-28 02:51:47,116 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 218 selfloop transitions, 360 changer transitions 0/583 dead transitions. [2024-06-28 02:51:47,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 583 transitions, 9355 flow [2024-06-28 02:51:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2024-06-28 02:51:47,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48140495867768596 [2024-06-28 02:51:47,117 INFO L175 Difference]: Start difference. First operand has 239 places, 506 transitions, 7400 flow. Second operand 11 states and 233 transitions. [2024-06-28 02:51:47,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 583 transitions, 9355 flow [2024-06-28 02:51:48,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 583 transitions, 8746 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:48,171 INFO L231 Difference]: Finished difference. Result has 245 places, 508 transitions, 7610 flow [2024-06-28 02:51:48,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6791, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7610, PETRI_PLACES=245, PETRI_TRANSITIONS=508} [2024-06-28 02:51:48,172 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 200 predicate places. [2024-06-28 02:51:48,172 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 508 transitions, 7610 flow [2024-06-28 02:51:48,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:48,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:48,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:48,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:51:48,173 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:48,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:48,174 INFO L85 PathProgramCache]: Analyzing trace with hash -736726428, now seen corresponding path program 1 times [2024-06-28 02:51:48,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:48,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082986306] [2024-06-28 02:51:48,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:48,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:48,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:48,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082986306] [2024-06-28 02:51:48,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082986306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:48,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:48,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:51:48,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942682294] [2024-06-28 02:51:48,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:48,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:51:48,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:48,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:51:48,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:51:49,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:51:49,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 508 transitions, 7610 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:49,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:49,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:51:49,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:50,165 INFO L124 PetriNetUnfolderBase]: 3544/5588 cut-off events. [2024-06-28 02:51:50,166 INFO L125 PetriNetUnfolderBase]: For 550396/550621 co-relation queries the response was YES. [2024-06-28 02:51:50,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48281 conditions, 5588 events. 3544/5588 cut-off events. For 550396/550621 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 32982 event pairs, 1187 based on Foata normal form. 43/5531 useless extension candidates. Maximal degree in co-relation 48172. Up to 4813 conditions per place. [2024-06-28 02:51:50,232 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 431 selfloop transitions, 29 changer transitions 0/535 dead transitions. [2024-06-28 02:51:50,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 535 transitions, 8684 flow [2024-06-28 02:51:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:51:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:51:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 02:51:50,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-28 02:51:50,233 INFO L175 Difference]: Start difference. First operand has 245 places, 508 transitions, 7610 flow. Second operand 8 states and 166 transitions. [2024-06-28 02:51:50,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 535 transitions, 8684 flow [2024-06-28 02:51:51,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 535 transitions, 8123 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:51,343 INFO L231 Difference]: Finished difference. Result has 247 places, 511 transitions, 7160 flow [2024-06-28 02:51:51,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7049, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7160, PETRI_PLACES=247, PETRI_TRANSITIONS=511} [2024-06-28 02:51:51,343 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 202 predicate places. [2024-06-28 02:51:51,343 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 511 transitions, 7160 flow [2024-06-28 02:51:51,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:51,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:51,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:51,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:51:51,344 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:51,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:51,344 INFO L85 PathProgramCache]: Analyzing trace with hash -625701590, now seen corresponding path program 11 times [2024-06-28 02:51:51,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:51,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736248924] [2024-06-28 02:51:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:51,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:52,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:52,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736248924] [2024-06-28 02:51:52,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736248924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:52,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:52,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:52,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918794651] [2024-06-28 02:51:52,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:52,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:52,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:52,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:52,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:52,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 511 transitions, 7160 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:52,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:52,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:52,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:54,211 INFO L124 PetriNetUnfolderBase]: 4293/6684 cut-off events. [2024-06-28 02:51:54,212 INFO L125 PetriNetUnfolderBase]: For 544321/544323 co-relation queries the response was YES. [2024-06-28 02:51:54,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54387 conditions, 6684 events. 4293/6684 cut-off events. For 544321/544323 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39300 event pairs, 1037 based on Foata normal form. 8/6690 useless extension candidates. Maximal degree in co-relation 54277. Up to 6003 conditions per place. [2024-06-28 02:51:54,285 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 489 selfloop transitions, 108 changer transitions 0/602 dead transitions. [2024-06-28 02:51:54,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 602 transitions, 9550 flow [2024-06-28 02:51:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:54,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 02:51:54,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44214876033057854 [2024-06-28 02:51:54,287 INFO L175 Difference]: Start difference. First operand has 247 places, 511 transitions, 7160 flow. Second operand 11 states and 214 transitions. [2024-06-28 02:51:54,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 602 transitions, 9550 flow [2024-06-28 02:51:55,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 602 transitions, 9427 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:55,357 INFO L231 Difference]: Finished difference. Result has 255 places, 565 transitions, 8430 flow [2024-06-28 02:51:55,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7049, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8430, PETRI_PLACES=255, PETRI_TRANSITIONS=565} [2024-06-28 02:51:55,358 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 210 predicate places. [2024-06-28 02:51:55,358 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 565 transitions, 8430 flow [2024-06-28 02:51:55,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:55,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:55,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:55,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:51:55,358 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:51:55,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash 924165392, now seen corresponding path program 12 times [2024-06-28 02:51:55,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:55,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694227795] [2024-06-28 02:51:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:55,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:56,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:56,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694227795] [2024-06-28 02:51:56,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694227795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:56,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:56,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:56,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540179513] [2024-06-28 02:51:56,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:56,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:56,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:56,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:56,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:56,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:51:56,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 565 transitions, 8430 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:51:56,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:56,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:51:56,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:58,659 INFO L124 PetriNetUnfolderBase]: 5355/8428 cut-off events. [2024-06-28 02:51:58,659 INFO L125 PetriNetUnfolderBase]: For 605724/605729 co-relation queries the response was YES. [2024-06-28 02:51:58,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65429 conditions, 8428 events. 5355/8428 cut-off events. For 605724/605729 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 52804 event pairs, 1175 based on Foata normal form. 8/8433 useless extension candidates. Maximal degree in co-relation 65316. Up to 4724 conditions per place. [2024-06-28 02:51:58,771 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 284 selfloop transitions, 555 changer transitions 0/844 dead transitions. [2024-06-28 02:51:58,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 844 transitions, 14016 flow [2024-06-28 02:51:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 241 transitions. [2024-06-28 02:51:58,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49793388429752067 [2024-06-28 02:51:58,772 INFO L175 Difference]: Start difference. First operand has 255 places, 565 transitions, 8430 flow. Second operand 11 states and 241 transitions. [2024-06-28 02:51:58,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 844 transitions, 14016 flow [2024-06-28 02:52:00,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 844 transitions, 13849 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 02:52:00,316 INFO L231 Difference]: Finished difference. Result has 267 places, 745 transitions, 12411 flow [2024-06-28 02:52:00,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8263, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=375, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12411, PETRI_PLACES=267, PETRI_TRANSITIONS=745} [2024-06-28 02:52:00,317 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 222 predicate places. [2024-06-28 02:52:00,317 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 745 transitions, 12411 flow [2024-06-28 02:52:00,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:00,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:00,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:00,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:52:00,318 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:00,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash -625551860, now seen corresponding path program 13 times [2024-06-28 02:52:00,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:00,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133464348] [2024-06-28 02:52:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:00,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:01,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:01,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133464348] [2024-06-28 02:52:01,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133464348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:01,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:01,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:01,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735230225] [2024-06-28 02:52:01,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:01,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:01,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:01,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:01,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:01,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:52:01,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 745 transitions, 12411 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:01,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:01,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:52:01,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:03,557 INFO L124 PetriNetUnfolderBase]: 5339/8405 cut-off events. [2024-06-28 02:52:03,557 INFO L125 PetriNetUnfolderBase]: For 627557/627562 co-relation queries the response was YES. [2024-06-28 02:52:03,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69025 conditions, 8405 events. 5339/8405 cut-off events. For 627557/627562 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 52700 event pairs, 1166 based on Foata normal form. 8/8410 useless extension candidates. Maximal degree in co-relation 68907. Up to 4711 conditions per place. [2024-06-28 02:52:03,895 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 278 selfloop transitions, 559 changer transitions 0/842 dead transitions. [2024-06-28 02:52:03,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 842 transitions, 15307 flow [2024-06-28 02:52:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 237 transitions. [2024-06-28 02:52:03,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4896694214876033 [2024-06-28 02:52:03,897 INFO L175 Difference]: Start difference. First operand has 267 places, 745 transitions, 12411 flow. Second operand 11 states and 237 transitions. [2024-06-28 02:52:03,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 842 transitions, 15307 flow [2024-06-28 02:52:05,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 842 transitions, 14623 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-28 02:52:05,140 INFO L231 Difference]: Finished difference. Result has 276 places, 748 transitions, 12953 flow [2024-06-28 02:52:05,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11727, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=556, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12953, PETRI_PLACES=276, PETRI_TRANSITIONS=748} [2024-06-28 02:52:05,142 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 231 predicate places. [2024-06-28 02:52:05,142 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 748 transitions, 12953 flow [2024-06-28 02:52:05,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:05,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:05,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:05,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:52:05,143 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:05,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash -481661330, now seen corresponding path program 14 times [2024-06-28 02:52:05,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:05,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332022371] [2024-06-28 02:52:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:05,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:06,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:06,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332022371] [2024-06-28 02:52:06,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332022371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:06,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:06,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:06,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256612799] [2024-06-28 02:52:06,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:06,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:06,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:06,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:06,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:06,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:52:06,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 748 transitions, 12953 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:06,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:06,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:52:06,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:08,740 INFO L124 PetriNetUnfolderBase]: 5533/8735 cut-off events. [2024-06-28 02:52:08,740 INFO L125 PetriNetUnfolderBase]: For 704011/704016 co-relation queries the response was YES. [2024-06-28 02:52:08,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72941 conditions, 8735 events. 5533/8735 cut-off events. For 704011/704016 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 55490 event pairs, 1246 based on Foata normal form. 10/8742 useless extension candidates. Maximal degree in co-relation 72821. Up to 4882 conditions per place. [2024-06-28 02:52:08,854 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 300 selfloop transitions, 569 changer transitions 0/874 dead transitions. [2024-06-28 02:52:08,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 874 transitions, 17115 flow [2024-06-28 02:52:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:08,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 244 transitions. [2024-06-28 02:52:08,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041322314049587 [2024-06-28 02:52:08,856 INFO L175 Difference]: Start difference. First operand has 276 places, 748 transitions, 12953 flow. Second operand 11 states and 244 transitions. [2024-06-28 02:52:08,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 874 transitions, 17115 flow [2024-06-28 02:52:10,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 874 transitions, 16124 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:10,494 INFO L231 Difference]: Finished difference. Result has 283 places, 781 transitions, 14002 flow [2024-06-28 02:52:10,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12016, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14002, PETRI_PLACES=283, PETRI_TRANSITIONS=781} [2024-06-28 02:52:10,496 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 238 predicate places. [2024-06-28 02:52:10,496 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 781 transitions, 14002 flow [2024-06-28 02:52:10,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:10,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:10,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:10,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:52:10,497 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:10,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:10,497 INFO L85 PathProgramCache]: Analyzing trace with hash -481666910, now seen corresponding path program 15 times [2024-06-28 02:52:10,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:10,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394668591] [2024-06-28 02:52:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:10,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:11,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:11,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394668591] [2024-06-28 02:52:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394668591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:11,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:11,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:11,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251752022] [2024-06-28 02:52:11,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:11,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:11,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:11,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:52:11,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 781 transitions, 14002 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:11,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:11,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:52:11,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:14,135 INFO L124 PetriNetUnfolderBase]: 5511/8710 cut-off events. [2024-06-28 02:52:14,135 INFO L125 PetriNetUnfolderBase]: For 713027/713032 co-relation queries the response was YES. [2024-06-28 02:52:14,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72953 conditions, 8710 events. 5511/8710 cut-off events. For 713027/713032 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 55321 event pairs, 1239 based on Foata normal form. 10/8717 useless extension candidates. Maximal degree in co-relation 72830. Up to 4864 conditions per place. [2024-06-28 02:52:14,258 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 296 selfloop transitions, 571 changer transitions 0/872 dead transitions. [2024-06-28 02:52:14,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 872 transitions, 17142 flow [2024-06-28 02:52:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:14,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:14,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 241 transitions. [2024-06-28 02:52:14,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49793388429752067 [2024-06-28 02:52:14,260 INFO L175 Difference]: Start difference. First operand has 283 places, 781 transitions, 14002 flow. Second operand 11 states and 241 transitions. [2024-06-28 02:52:14,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 872 transitions, 17142 flow [2024-06-28 02:52:15,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 872 transitions, 15989 flow, removed 141 selfloop flow, removed 5 redundant places. [2024-06-28 02:52:15,677 INFO L231 Difference]: Finished difference. Result has 290 places, 785 transitions, 14088 flow [2024-06-28 02:52:15,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12849, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=567, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14088, PETRI_PLACES=290, PETRI_TRANSITIONS=785} [2024-06-28 02:52:15,678 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 245 predicate places. [2024-06-28 02:52:15,678 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 785 transitions, 14088 flow [2024-06-28 02:52:15,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:15,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:15,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:15,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:52:15,679 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:15,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:15,679 INFO L85 PathProgramCache]: Analyzing trace with hash -481459520, now seen corresponding path program 16 times [2024-06-28 02:52:15,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:15,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833591820] [2024-06-28 02:52:15,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:15,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:16,687 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 02:52:16,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833591820] [2024-06-28 02:52:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833591820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:16,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:16,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:16,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278521176] [2024-06-28 02:52:16,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:16,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:16,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:16,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:16,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:16,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:52:16,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 785 transitions, 14088 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:16,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:16,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:52:16,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:19,282 INFO L124 PetriNetUnfolderBase]: 5489/8673 cut-off events. [2024-06-28 02:52:19,283 INFO L125 PetriNetUnfolderBase]: For 716098/716103 co-relation queries the response was YES. [2024-06-28 02:52:19,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72259 conditions, 8673 events. 5489/8673 cut-off events. For 716098/716103 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 55064 event pairs, 1205 based on Foata normal form. 10/8680 useless extension candidates. Maximal degree in co-relation 72134. Up to 4846 conditions per place. [2024-06-28 02:52:19,380 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 288 selfloop transitions, 578 changer transitions 0/871 dead transitions. [2024-06-28 02:52:19,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 871 transitions, 17000 flow [2024-06-28 02:52:19,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 237 transitions. [2024-06-28 02:52:19,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4896694214876033 [2024-06-28 02:52:19,381 INFO L175 Difference]: Start difference. First operand has 290 places, 785 transitions, 14088 flow. Second operand 11 states and 237 transitions. [2024-06-28 02:52:19,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 871 transitions, 17000 flow [2024-06-28 02:52:21,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 871 transitions, 15824 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-28 02:52:21,016 INFO L231 Difference]: Finished difference. Result has 294 places, 785 transitions, 14086 flow [2024-06-28 02:52:21,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12912, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14086, PETRI_PLACES=294, PETRI_TRANSITIONS=785} [2024-06-28 02:52:21,017 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 249 predicate places. [2024-06-28 02:52:21,017 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 785 transitions, 14086 flow [2024-06-28 02:52:21,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:21,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:21,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:21,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:52:21,018 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:21,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:21,018 INFO L85 PathProgramCache]: Analyzing trace with hash -475035410, now seen corresponding path program 17 times [2024-06-28 02:52:21,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:21,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051554829] [2024-06-28 02:52:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:21,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:22,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:22,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051554829] [2024-06-28 02:52:22,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051554829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:22,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:22,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:22,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401271070] [2024-06-28 02:52:22,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:22,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:22,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:22,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:22,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:22,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:52:22,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 785 transitions, 14086 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:22,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:22,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:52:22,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:24,563 INFO L124 PetriNetUnfolderBase]: 5743/9047 cut-off events. [2024-06-28 02:52:24,563 INFO L125 PetriNetUnfolderBase]: For 767570/767573 co-relation queries the response was YES. [2024-06-28 02:52:24,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76048 conditions, 9047 events. 5743/9047 cut-off events. For 767570/767573 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 57551 event pairs, 1113 based on Foata normal form. 8/9052 useless extension candidates. Maximal degree in co-relation 75922. Up to 5025 conditions per place. [2024-06-28 02:52:24,686 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 293 selfloop transitions, 611 changer transitions 0/909 dead transitions. [2024-06-28 02:52:24,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 909 transitions, 18212 flow [2024-06-28 02:52:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:24,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 239 transitions. [2024-06-28 02:52:24,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.493801652892562 [2024-06-28 02:52:24,688 INFO L175 Difference]: Start difference. First operand has 294 places, 785 transitions, 14086 flow. Second operand 11 states and 239 transitions. [2024-06-28 02:52:24,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 909 transitions, 18212 flow [2024-06-28 02:52:26,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 909 transitions, 17157 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:26,596 INFO L231 Difference]: Finished difference. Result has 303 places, 831 transitions, 15608 flow [2024-06-28 02:52:26,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13111, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=565, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15608, PETRI_PLACES=303, PETRI_TRANSITIONS=831} [2024-06-28 02:52:26,598 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 258 predicate places. [2024-06-28 02:52:26,598 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 831 transitions, 15608 flow [2024-06-28 02:52:26,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:26,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:26,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:26,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:52:26,599 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:26,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:26,599 INFO L85 PathProgramCache]: Analyzing trace with hash 2120275216, now seen corresponding path program 18 times [2024-06-28 02:52:26,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:26,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604017715] [2024-06-28 02:52:26,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:26,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:27,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:27,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604017715] [2024-06-28 02:52:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604017715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:27,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:27,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:27,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726116686] [2024-06-28 02:52:27,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:27,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:27,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:27,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:27,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:27,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:52:27,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 831 transitions, 15608 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:27,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:27,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:52:27,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:30,551 INFO L124 PetriNetUnfolderBase]: 5721/9022 cut-off events. [2024-06-28 02:52:30,551 INFO L125 PetriNetUnfolderBase]: For 776863/776866 co-relation queries the response was YES. [2024-06-28 02:52:30,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77253 conditions, 9022 events. 5721/9022 cut-off events. For 776863/776866 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 57412 event pairs, 1106 based on Foata normal form. 8/9027 useless extension candidates. Maximal degree in co-relation 77122. Up to 5007 conditions per place. [2024-06-28 02:52:30,707 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 289 selfloop transitions, 613 changer transitions 0/907 dead transitions. [2024-06-28 02:52:30,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 907 transitions, 18535 flow [2024-06-28 02:52:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:30,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 236 transitions. [2024-06-28 02:52:30,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48760330578512395 [2024-06-28 02:52:30,708 INFO L175 Difference]: Start difference. First operand has 303 places, 831 transitions, 15608 flow. Second operand 11 states and 236 transitions. [2024-06-28 02:52:30,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 907 transitions, 18535 flow [2024-06-28 02:52:32,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 907 transitions, 17593 flow, removed 141 selfloop flow, removed 4 redundant places. [2024-06-28 02:52:32,685 INFO L231 Difference]: Finished difference. Result has 311 places, 834 transitions, 15961 flow [2024-06-28 02:52:32,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14666, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15961, PETRI_PLACES=311, PETRI_TRANSITIONS=834} [2024-06-28 02:52:32,686 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 266 predicate places. [2024-06-28 02:52:32,686 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 834 transitions, 15961 flow [2024-06-28 02:52:32,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:32,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:32,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:32,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:52:32,687 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:32,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:32,687 INFO L85 PathProgramCache]: Analyzing trace with hash 570759774, now seen corresponding path program 19 times [2024-06-28 02:52:32,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:32,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538383307] [2024-06-28 02:52:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:32,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:33,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:33,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538383307] [2024-06-28 02:52:33,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538383307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:33,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:33,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:33,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265968879] [2024-06-28 02:52:33,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:33,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:33,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:33,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:33,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:52:33,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 834 transitions, 15961 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:33,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:33,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:52:33,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:36,328 INFO L124 PetriNetUnfolderBase]: 5771/9111 cut-off events. [2024-06-28 02:52:36,328 INFO L125 PetriNetUnfolderBase]: For 810936/810939 co-relation queries the response was YES. [2024-06-28 02:52:36,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78113 conditions, 9111 events. 5771/9111 cut-off events. For 810936/810939 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 58223 event pairs, 1126 based on Foata normal form. 8/9116 useless extension candidates. Maximal degree in co-relation 77980. Up to 5052 conditions per place. [2024-06-28 02:52:36,474 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 296 selfloop transitions, 617 changer transitions 0/918 dead transitions. [2024-06-28 02:52:36,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 918 transitions, 19209 flow [2024-06-28 02:52:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:36,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2024-06-28 02:52:36,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49173553719008267 [2024-06-28 02:52:36,475 INFO L175 Difference]: Start difference. First operand has 311 places, 834 transitions, 15961 flow. Second operand 11 states and 238 transitions. [2024-06-28 02:52:36,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 918 transitions, 19209 flow [2024-06-28 02:52:38,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 918 transitions, 17996 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 02:52:38,229 INFO L231 Difference]: Finished difference. Result has 316 places, 844 transitions, 16298 flow [2024-06-28 02:52:38,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14775, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=607, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16298, PETRI_PLACES=316, PETRI_TRANSITIONS=844} [2024-06-28 02:52:38,230 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 271 predicate places. [2024-06-28 02:52:38,230 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 844 transitions, 16298 flow [2024-06-28 02:52:38,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:38,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:38,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:38,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:52:38,231 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:38,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:38,232 INFO L85 PathProgramCache]: Analyzing trace with hash 578186661, now seen corresponding path program 1 times [2024-06-28 02:52:38,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:38,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812448811] [2024-06-28 02:52:38,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:38,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:39,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:39,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812448811] [2024-06-28 02:52:39,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812448811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:39,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:39,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:52:39,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472966978] [2024-06-28 02:52:39,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:39,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:52:39,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:39,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:52:39,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:52:39,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:52:39,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 844 transitions, 16298 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:39,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:39,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:52:39,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:42,087 INFO L124 PetriNetUnfolderBase]: 5450/8741 cut-off events. [2024-06-28 02:52:42,087 INFO L125 PetriNetUnfolderBase]: For 864326/864394 co-relation queries the response was YES. [2024-06-28 02:52:42,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76112 conditions, 8741 events. 5450/8741 cut-off events. For 864326/864394 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 57486 event pairs, 1628 based on Foata normal form. 68/8696 useless extension candidates. Maximal degree in co-relation 75977. Up to 7559 conditions per place. [2024-06-28 02:52:42,224 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 777 selfloop transitions, 58 changer transitions 0/885 dead transitions. [2024-06-28 02:52:42,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 885 transitions, 18260 flow [2024-06-28 02:52:42,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:42,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:42,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-28 02:52:42,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 02:52:42,225 INFO L175 Difference]: Start difference. First operand has 316 places, 844 transitions, 16298 flow. Second operand 10 states and 205 transitions. [2024-06-28 02:52:42,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 885 transitions, 18260 flow [2024-06-28 02:52:44,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 885 transitions, 17008 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:44,318 INFO L231 Difference]: Finished difference. Result has 322 places, 850 transitions, 15287 flow [2024-06-28 02:52:44,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15049, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=788, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15287, PETRI_PLACES=322, PETRI_TRANSITIONS=850} [2024-06-28 02:52:44,319 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 277 predicate places. [2024-06-28 02:52:44,319 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 850 transitions, 15287 flow [2024-06-28 02:52:44,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:44,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:44,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:44,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:52:44,319 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:44,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:44,320 INFO L85 PathProgramCache]: Analyzing trace with hash 577909614, now seen corresponding path program 20 times [2024-06-28 02:52:44,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:44,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391332761] [2024-06-28 02:52:44,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:44,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:45,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:45,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391332761] [2024-06-28 02:52:45,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391332761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:45,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:45,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:45,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848118347] [2024-06-28 02:52:45,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:45,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:45,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:45,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:45,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:45,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:52:45,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 850 transitions, 15287 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:45,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:45,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:52:45,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:47,957 INFO L124 PetriNetUnfolderBase]: 5766/9131 cut-off events. [2024-06-28 02:52:47,957 INFO L125 PetriNetUnfolderBase]: For 816334/816337 co-relation queries the response was YES. [2024-06-28 02:52:48,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76878 conditions, 9131 events. 5766/9131 cut-off events. For 816334/816337 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 58780 event pairs, 1012 based on Foata normal form. 8/9136 useless extension candidates. Maximal degree in co-relation 76740. Up to 5061 conditions per place. [2024-06-28 02:52:48,095 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 269 selfloop transitions, 650 changer transitions 0/924 dead transitions. [2024-06-28 02:52:48,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 924 transitions, 18083 flow [2024-06-28 02:52:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:48,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2024-06-28 02:52:48,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793388429752066 [2024-06-28 02:52:48,096 INFO L175 Difference]: Start difference. First operand has 322 places, 850 transitions, 15287 flow. Second operand 11 states and 232 transitions. [2024-06-28 02:52:48,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 924 transitions, 18083 flow [2024-06-28 02:52:51,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 924 transitions, 16987 flow, removed 88 selfloop flow, removed 7 redundant places. [2024-06-28 02:52:51,038 INFO L231 Difference]: Finished difference. Result has 326 places, 850 transitions, 15505 flow [2024-06-28 02:52:51,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14191, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=850, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=650, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15505, PETRI_PLACES=326, PETRI_TRANSITIONS=850} [2024-06-28 02:52:51,039 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 281 predicate places. [2024-06-28 02:52:51,039 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 850 transitions, 15505 flow [2024-06-28 02:52:51,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:52:51,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:51,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:51,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:52:51,040 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:51,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:51,040 INFO L85 PathProgramCache]: Analyzing trace with hash -321891730, now seen corresponding path program 2 times [2024-06-28 02:52:51,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:51,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069382223] [2024-06-28 02:52:51,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:51,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:51,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:51,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069382223] [2024-06-28 02:52:51,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069382223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:51,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:51,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:52:51,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808541301] [2024-06-28 02:52:51,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:51,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:52:51,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:51,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:52:51,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:52:51,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:52:51,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 850 transitions, 15505 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:51,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:51,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:52:51,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:53,844 INFO L124 PetriNetUnfolderBase]: 4872/7842 cut-off events. [2024-06-28 02:52:53,844 INFO L125 PetriNetUnfolderBase]: For 897134/897618 co-relation queries the response was YES. [2024-06-28 02:52:53,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70130 conditions, 7842 events. 4872/7842 cut-off events. For 897134/897618 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 50835 event pairs, 1266 based on Foata normal form. 54/7750 useless extension candidates. Maximal degree in co-relation 69994. Up to 6505 conditions per place. [2024-06-28 02:52:53,964 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 732 selfloop transitions, 33 changer transitions 0/877 dead transitions. [2024-06-28 02:52:53,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 877 transitions, 17183 flow [2024-06-28 02:52:53,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:52:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:52:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 02:52:53,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715909090909091 [2024-06-28 02:52:53,965 INFO L175 Difference]: Start difference. First operand has 326 places, 850 transitions, 15505 flow. Second operand 8 states and 166 transitions. [2024-06-28 02:52:53,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 877 transitions, 17183 flow [2024-06-28 02:52:56,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 877 transitions, 16037 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:56,307 INFO L231 Difference]: Finished difference. Result has 328 places, 856 transitions, 14505 flow [2024-06-28 02:52:56,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14359, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=850, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=817, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14505, PETRI_PLACES=328, PETRI_TRANSITIONS=856} [2024-06-28 02:52:56,308 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 283 predicate places. [2024-06-28 02:52:56,308 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 856 transitions, 14505 flow [2024-06-28 02:52:56,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:56,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:56,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:56,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:52:56,309 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:52:56,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:56,309 INFO L85 PathProgramCache]: Analyzing trace with hash 300532160, now seen corresponding path program 3 times [2024-06-28 02:52:56,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:56,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158170508] [2024-06-28 02:52:56,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:56,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:57,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:57,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158170508] [2024-06-28 02:52:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158170508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:57,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:52:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443421446] [2024-06-28 02:52:57,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:57,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:52:57,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:57,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:52:57,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:52:57,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:52:57,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 856 transitions, 14505 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:57,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:57,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:52:57,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:59,443 INFO L124 PetriNetUnfolderBase]: 4882/7862 cut-off events. [2024-06-28 02:52:59,443 INFO L125 PetriNetUnfolderBase]: For 893904/894305 co-relation queries the response was YES. [2024-06-28 02:52:59,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68553 conditions, 7862 events. 4882/7862 cut-off events. For 893904/894305 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 50947 event pairs, 1234 based on Foata normal form. 51/7776 useless extension candidates. Maximal degree in co-relation 68416. Up to 6510 conditions per place. [2024-06-28 02:52:59,543 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 727 selfloop transitions, 41 changer transitions 0/880 dead transitions. [2024-06-28 02:52:59,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 880 transitions, 16185 flow [2024-06-28 02:52:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:52:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:52:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 02:52:59,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-28 02:52:59,544 INFO L175 Difference]: Start difference. First operand has 328 places, 856 transitions, 14505 flow. Second operand 8 states and 163 transitions. [2024-06-28 02:52:59,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 880 transitions, 16185 flow [2024-06-28 02:53:01,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 880 transitions, 16114 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:53:01,730 INFO L231 Difference]: Finished difference. Result has 333 places, 862 transitions, 14614 flow [2024-06-28 02:53:01,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14434, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14614, PETRI_PLACES=333, PETRI_TRANSITIONS=862} [2024-06-28 02:53:01,731 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 288 predicate places. [2024-06-28 02:53:01,731 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 862 transitions, 14614 flow [2024-06-28 02:53:01,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:01,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:01,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:01,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:53:01,732 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:01,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:01,733 INFO L85 PathProgramCache]: Analyzing trace with hash 327344525, now seen corresponding path program 1 times [2024-06-28 02:53:01,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:01,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006515546] [2024-06-28 02:53:01,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:01,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:02,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:02,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006515546] [2024-06-28 02:53:02,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006515546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:02,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:02,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:53:02,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252564959] [2024-06-28 02:53:02,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:02,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:53:02,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:02,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:53:02,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:53:03,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 02:53:03,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 862 transitions, 14614 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:03,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:03,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 02:53:03,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:04,678 INFO L124 PetriNetUnfolderBase]: 4492/7168 cut-off events. [2024-06-28 02:53:04,678 INFO L125 PetriNetUnfolderBase]: For 967180/967714 co-relation queries the response was YES. [2024-06-28 02:53:04,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65061 conditions, 7168 events. 4492/7168 cut-off events. For 967180/967714 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 45521 event pairs, 1175 based on Foata normal form. 96/6905 useless extension candidates. Maximal degree in co-relation 64922. Up to 5898 conditions per place. [2024-06-28 02:53:04,798 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 703 selfloop transitions, 20 changer transitions 0/883 dead transitions. [2024-06-28 02:53:04,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 883 transitions, 16182 flow [2024-06-28 02:53:04,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:53:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:53:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 02:53:04,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744318181818182 [2024-06-28 02:53:04,799 INFO L175 Difference]: Start difference. First operand has 333 places, 862 transitions, 14614 flow. Second operand 8 states and 167 transitions. [2024-06-28 02:53:04,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 883 transitions, 16182 flow [2024-06-28 02:53:06,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 883 transitions, 16074 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:53:06,624 INFO L231 Difference]: Finished difference. Result has 336 places, 865 transitions, 14600 flow [2024-06-28 02:53:06,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14506, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=862, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=842, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14600, PETRI_PLACES=336, PETRI_TRANSITIONS=865} [2024-06-28 02:53:06,625 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 291 predicate places. [2024-06-28 02:53:06,625 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 865 transitions, 14600 flow [2024-06-28 02:53:06,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:06,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:06,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:06,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:53:06,625 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:06,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:06,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1678476888, now seen corresponding path program 21 times [2024-06-28 02:53:06,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:06,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474159319] [2024-06-28 02:53:06,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:06,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:07,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:07,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474159319] [2024-06-28 02:53:07,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474159319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:07,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:07,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:07,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001920794] [2024-06-28 02:53:07,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:07,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:07,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:07,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:07,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:07,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:53:07,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 865 transitions, 14600 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:07,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:07,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:53:07,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:10,435 INFO L124 PetriNetUnfolderBase]: 5775/9154 cut-off events. [2024-06-28 02:53:10,436 INFO L125 PetriNetUnfolderBase]: For 863756/863762 co-relation queries the response was YES. [2024-06-28 02:53:10,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76029 conditions, 9154 events. 5775/9154 cut-off events. For 863756/863762 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 59028 event pairs, 1680 based on Foata normal form. 12/9164 useless extension candidates. Maximal degree in co-relation 75889. Up to 7946 conditions per place. [2024-06-28 02:53:10,581 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 739 selfloop transitions, 164 changer transitions 0/908 dead transitions. [2024-06-28 02:53:10,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 908 transitions, 16681 flow [2024-06-28 02:53:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:53:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:53:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 02:53:10,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-28 02:53:10,582 INFO L175 Difference]: Start difference. First operand has 336 places, 865 transitions, 14600 flow. Second operand 10 states and 196 transitions. [2024-06-28 02:53:10,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 908 transitions, 16681 flow [2024-06-28 02:53:12,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 908 transitions, 16561 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 02:53:12,950 INFO L231 Difference]: Finished difference. Result has 341 places, 865 transitions, 14868 flow [2024-06-28 02:53:12,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14480, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14868, PETRI_PLACES=341, PETRI_TRANSITIONS=865} [2024-06-28 02:53:12,951 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 296 predicate places. [2024-06-28 02:53:12,951 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 865 transitions, 14868 flow [2024-06-28 02:53:12,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:12,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:12,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:12,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:53:12,952 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:12,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1678626618, now seen corresponding path program 22 times [2024-06-28 02:53:12,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:12,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133536662] [2024-06-28 02:53:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:12,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:12,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:14,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:14,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133536662] [2024-06-28 02:53:14,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133536662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:14,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:14,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:14,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422735815] [2024-06-28 02:53:14,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:14,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:14,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:14,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:14,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:53:14,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 865 transitions, 14868 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:14,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:14,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:53:14,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:16,856 INFO L124 PetriNetUnfolderBase]: 5863/9298 cut-off events. [2024-06-28 02:53:16,856 INFO L125 PetriNetUnfolderBase]: For 908112/908119 co-relation queries the response was YES. [2024-06-28 02:53:16,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78600 conditions, 9298 events. 5863/9298 cut-off events. For 908112/908119 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 60264 event pairs, 1055 based on Foata normal form. 10/9305 useless extension candidates. Maximal degree in co-relation 78459. Up to 5160 conditions per place. [2024-06-28 02:53:17,032 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 234 selfloop transitions, 696 changer transitions 0/935 dead transitions. [2024-06-28 02:53:17,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 935 transitions, 18084 flow [2024-06-28 02:53:17,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:53:17,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:53:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2024-06-28 02:53:17,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48409090909090907 [2024-06-28 02:53:17,034 INFO L175 Difference]: Start difference. First operand has 341 places, 865 transitions, 14868 flow. Second operand 10 states and 213 transitions. [2024-06-28 02:53:17,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 935 transitions, 18084 flow [2024-06-28 02:53:20,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 935 transitions, 17796 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 02:53:20,136 INFO L231 Difference]: Finished difference. Result has 343 places, 877 transitions, 16353 flow [2024-06-28 02:53:20,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=14604, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=684, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16353, PETRI_PLACES=343, PETRI_TRANSITIONS=877} [2024-06-28 02:53:20,137 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 298 predicate places. [2024-06-28 02:53:20,137 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 877 transitions, 16353 flow [2024-06-28 02:53:20,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:20,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:20,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:20,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:53:20,138 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:20,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1678621038, now seen corresponding path program 23 times [2024-06-28 02:53:20,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:20,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353998825] [2024-06-28 02:53:20,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:20,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:21,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:21,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353998825] [2024-06-28 02:53:21,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353998825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:21,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:21,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:21,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96722506] [2024-06-28 02:53:21,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:21,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:21,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:21,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:21,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:53:21,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 877 transitions, 16353 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:21,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:21,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:53:21,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:24,006 INFO L124 PetriNetUnfolderBase]: 5847/9285 cut-off events. [2024-06-28 02:53:24,007 INFO L125 PetriNetUnfolderBase]: For 870290/870297 co-relation queries the response was YES. [2024-06-28 02:53:24,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79850 conditions, 9285 events. 5847/9285 cut-off events. For 870290/870297 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 60277 event pairs, 1091 based on Foata normal form. 10/9292 useless extension candidates. Maximal degree in co-relation 79709. Up to 5147 conditions per place. [2024-06-28 02:53:24,152 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 240 selfloop transitions, 685 changer transitions 0/930 dead transitions. [2024-06-28 02:53:24,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 930 transitions, 18908 flow [2024-06-28 02:53:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:53:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:53:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2024-06-28 02:53:24,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48409090909090907 [2024-06-28 02:53:24,153 INFO L175 Difference]: Start difference. First operand has 343 places, 877 transitions, 16353 flow. Second operand 10 states and 213 transitions. [2024-06-28 02:53:24,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 930 transitions, 18908 flow [2024-06-28 02:53:26,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 930 transitions, 17739 flow, removed 121 selfloop flow, removed 10 redundant places. [2024-06-28 02:53:26,858 INFO L231 Difference]: Finished difference. Result has 343 places, 877 transitions, 16607 flow [2024-06-28 02:53:26,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15196, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=685, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16607, PETRI_PLACES=343, PETRI_TRANSITIONS=877} [2024-06-28 02:53:26,859 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 298 predicate places. [2024-06-28 02:53:26,859 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 877 transitions, 16607 flow [2024-06-28 02:53:26,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:26,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:26,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:26,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:53:26,860 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:26,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:26,860 INFO L85 PathProgramCache]: Analyzing trace with hash -927408166, now seen corresponding path program 24 times [2024-06-28 02:53:26,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:26,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442660457] [2024-06-28 02:53:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:26,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:27,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:27,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442660457] [2024-06-28 02:53:27,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442660457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:27,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:27,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:27,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024282248] [2024-06-28 02:53:27,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:27,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:27,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:27,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:27,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:28,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:53:28,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 877 transitions, 16607 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:28,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:28,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:53:28,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:30,728 INFO L124 PetriNetUnfolderBase]: 5969/9508 cut-off events. [2024-06-28 02:53:30,729 INFO L125 PetriNetUnfolderBase]: For 874986/874991 co-relation queries the response was YES. [2024-06-28 02:53:30,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81308 conditions, 9508 events. 5969/9508 cut-off events. For 874986/874991 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 62473 event pairs, 1209 based on Foata normal form. 10/9515 useless extension candidates. Maximal degree in co-relation 81170. Up to 5255 conditions per place. [2024-06-28 02:53:30,887 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 259 selfloop transitions, 691 changer transitions 0/955 dead transitions. [2024-06-28 02:53:30,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 955 transitions, 20147 flow [2024-06-28 02:53:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:53:30,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:53:30,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-28 02:53:30,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47954545454545455 [2024-06-28 02:53:30,889 INFO L175 Difference]: Start difference. First operand has 343 places, 877 transitions, 16607 flow. Second operand 10 states and 211 transitions. [2024-06-28 02:53:30,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 955 transitions, 20147 flow [2024-06-28 02:53:33,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 955 transitions, 18541 flow, removed 34 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:33,597 INFO L231 Difference]: Finished difference. Result has 341 places, 895 transitions, 16976 flow [2024-06-28 02:53:33,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15061, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=673, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16976, PETRI_PLACES=341, PETRI_TRANSITIONS=895} [2024-06-28 02:53:33,598 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 296 predicate places. [2024-06-28 02:53:33,598 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 895 transitions, 16976 flow [2024-06-28 02:53:33,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:33,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:33,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:33,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:53:33,598 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:33,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:33,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1614170264, now seen corresponding path program 25 times [2024-06-28 02:53:33,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:33,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943751035] [2024-06-28 02:53:33,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:33,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:34,801 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 02:53:34,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:34,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943751035] [2024-06-28 02:53:34,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943751035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:34,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:34,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:34,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979355169] [2024-06-28 02:53:34,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:34,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:34,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:34,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:34,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:34,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:53:34,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 895 transitions, 16976 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:34,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:34,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:53:34,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:37,983 INFO L124 PetriNetUnfolderBase]: 6019/9576 cut-off events. [2024-06-28 02:53:37,983 INFO L125 PetriNetUnfolderBase]: For 837855/837860 co-relation queries the response was YES. [2024-06-28 02:53:38,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81136 conditions, 9576 events. 6019/9576 cut-off events. For 837855/837860 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 62791 event pairs, 1258 based on Foata normal form. 10/9583 useless extension candidates. Maximal degree in co-relation 81000. Up to 5300 conditions per place. [2024-06-28 02:53:38,131 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 278 selfloop transitions, 676 changer transitions 0/959 dead transitions. [2024-06-28 02:53:38,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 959 transitions, 20149 flow [2024-06-28 02:53:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:53:38,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:53:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-28 02:53:38,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-06-28 02:53:38,132 INFO L175 Difference]: Start difference. First operand has 341 places, 895 transitions, 16976 flow. Second operand 10 states and 214 transitions. [2024-06-28 02:53:38,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 959 transitions, 20149 flow [2024-06-28 02:53:40,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 959 transitions, 19081 flow, removed 99 selfloop flow, removed 8 redundant places. [2024-06-28 02:53:40,559 INFO L231 Difference]: Finished difference. Result has 343 places, 904 transitions, 17578 flow [2024-06-28 02:53:40,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15951, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=895, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=667, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17578, PETRI_PLACES=343, PETRI_TRANSITIONS=904} [2024-06-28 02:53:40,560 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 298 predicate places. [2024-06-28 02:53:40,560 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 904 transitions, 17578 flow [2024-06-28 02:53:40,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:40,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:40,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:40,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:53:40,561 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:40,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:40,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1822511568, now seen corresponding path program 26 times [2024-06-28 02:53:40,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:40,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245759978] [2024-06-28 02:53:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:40,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:41,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:41,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245759978] [2024-06-28 02:53:41,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245759978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:41,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:41,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:41,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301044625] [2024-06-28 02:53:41,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:41,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:41,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:41,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:41,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:41,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:53:41,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 904 transitions, 17578 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:41,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:41,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:53:41,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:44,500 INFO L124 PetriNetUnfolderBase]: 5997/9556 cut-off events. [2024-06-28 02:53:44,500 INFO L125 PetriNetUnfolderBase]: For 815198/815203 co-relation queries the response was YES. [2024-06-28 02:53:44,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79926 conditions, 9556 events. 5997/9556 cut-off events. For 815198/815203 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 62802 event pairs, 1245 based on Foata normal form. 10/9563 useless extension candidates. Maximal degree in co-relation 79791. Up to 5282 conditions per place. [2024-06-28 02:53:44,648 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 272 selfloop transitions, 680 changer transitions 0/957 dead transitions. [2024-06-28 02:53:44,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 957 transitions, 20224 flow [2024-06-28 02:53:44,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:53:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:53:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-28 02:53:44,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47954545454545455 [2024-06-28 02:53:44,649 INFO L175 Difference]: Start difference. First operand has 343 places, 904 transitions, 17578 flow. Second operand 10 states and 211 transitions. [2024-06-28 02:53:44,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 957 transitions, 20224 flow [2024-06-28 02:53:46,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 957 transitions, 18438 flow, removed 122 selfloop flow, removed 10 redundant places. [2024-06-28 02:53:46,944 INFO L231 Difference]: Finished difference. Result has 343 places, 904 transitions, 17195 flow [2024-06-28 02:53:46,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=15800, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=680, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17195, PETRI_PLACES=343, PETRI_TRANSITIONS=904} [2024-06-28 02:53:46,944 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 298 predicate places. [2024-06-28 02:53:46,944 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 904 transitions, 17195 flow [2024-06-28 02:53:46,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:46,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:46,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:46,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:53:46,945 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:46,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:46,945 INFO L85 PathProgramCache]: Analyzing trace with hash -986098684, now seen corresponding path program 4 times [2024-06-28 02:53:46,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:46,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995262412] [2024-06-28 02:53:46,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:46,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:47,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:47,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:47,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995262412] [2024-06-28 02:53:47,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995262412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:47,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:47,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:53:47,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928823099] [2024-06-28 02:53:47,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:47,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:53:47,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:47,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:53:47,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:53:47,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:53:47,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 904 transitions, 17195 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:47,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:47,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:53:47,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:50,021 INFO L124 PetriNetUnfolderBase]: 5023/8066 cut-off events. [2024-06-28 02:53:50,021 INFO L125 PetriNetUnfolderBase]: For 846431/846907 co-relation queries the response was YES. [2024-06-28 02:53:50,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70895 conditions, 8066 events. 5023/8066 cut-off events. For 846431/846907 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 52526 event pairs, 1346 based on Foata normal form. 58/7930 useless extension candidates. Maximal degree in co-relation 70761. Up to 6714 conditions per place. [2024-06-28 02:53:50,133 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 778 selfloop transitions, 36 changer transitions 0/926 dead transitions. [2024-06-28 02:53:50,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 926 transitions, 18981 flow [2024-06-28 02:53:50,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:53:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:53:50,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-28 02:53:50,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-06-28 02:53:50,134 INFO L175 Difference]: Start difference. First operand has 343 places, 904 transitions, 17195 flow. Second operand 7 states and 146 transitions. [2024-06-28 02:53:50,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 926 transitions, 18981 flow [2024-06-28 02:53:52,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 926 transitions, 17821 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 02:53:52,229 INFO L231 Difference]: Finished difference. Result has 340 places, 907 transitions, 16191 flow [2024-06-28 02:53:52,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16035, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=904, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=868, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16191, PETRI_PLACES=340, PETRI_TRANSITIONS=907} [2024-06-28 02:53:52,231 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 295 predicate places. [2024-06-28 02:53:52,231 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 907 transitions, 16191 flow [2024-06-28 02:53:52,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:52,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:52,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:52,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:53:52,232 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:52,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:52,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1412602157, now seen corresponding path program 2 times [2024-06-28 02:53:52,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:52,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72350448] [2024-06-28 02:53:52,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:52,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:53,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:53,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72350448] [2024-06-28 02:53:53,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72350448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:53,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:53,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:53:53,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330133110] [2024-06-28 02:53:53,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:53,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:53:53,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:53,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:53:53,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:53:53,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:53:53,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 907 transitions, 16191 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:53,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:53,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:53:53,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:55,879 INFO L124 PetriNetUnfolderBase]: 5680/9140 cut-off events. [2024-06-28 02:53:55,880 INFO L125 PetriNetUnfolderBase]: For 782180/782251 co-relation queries the response was YES. [2024-06-28 02:53:55,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73470 conditions, 9140 events. 5680/9140 cut-off events. For 782180/782251 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 60968 event pairs, 1678 based on Foata normal form. 71/9101 useless extension candidates. Maximal degree in co-relation 73337. Up to 7867 conditions per place. [2024-06-28 02:53:56,008 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 829 selfloop transitions, 64 changer transitions 0/947 dead transitions. [2024-06-28 02:53:56,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 947 transitions, 18304 flow [2024-06-28 02:53:56,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:53:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:53:56,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 02:53:56,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 02:53:56,010 INFO L175 Difference]: Start difference. First operand has 340 places, 907 transitions, 16191 flow. Second operand 9 states and 183 transitions. [2024-06-28 02:53:56,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 947 transitions, 18304 flow [2024-06-28 02:53:57,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 947 transitions, 18190 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 02:53:57,616 INFO L231 Difference]: Finished difference. Result has 345 places, 914 transitions, 16348 flow [2024-06-28 02:53:57,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16077, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=907, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16348, PETRI_PLACES=345, PETRI_TRANSITIONS=914} [2024-06-28 02:53:57,617 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 300 predicate places. [2024-06-28 02:53:57,617 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 914 transitions, 16348 flow [2024-06-28 02:53:57,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:57,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:57,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:57,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:53:57,617 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:53:57,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:57,618 INFO L85 PathProgramCache]: Analyzing trace with hash 406751838, now seen corresponding path program 27 times [2024-06-28 02:53:57,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:57,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402908283] [2024-06-28 02:53:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:57,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:58,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:58,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402908283] [2024-06-28 02:53:58,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402908283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:58,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:58,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:53:58,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604710762] [2024-06-28 02:53:58,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:58,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:53:58,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:53:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:53:58,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:53:58,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 914 transitions, 16348 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:53:58,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:58,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:53:58,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:01,695 INFO L124 PetriNetUnfolderBase]: 6175/9865 cut-off events. [2024-06-28 02:54:01,695 INFO L125 PetriNetUnfolderBase]: For 778408/778411 co-relation queries the response was YES. [2024-06-28 02:54:01,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79517 conditions, 9865 events. 6175/9865 cut-off events. For 778408/778411 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 65408 event pairs, 1142 based on Foata normal form. 10/9872 useless extension candidates. Maximal degree in co-relation 79382. Up to 5455 conditions per place. [2024-06-28 02:54:01,826 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 263 selfloop transitions, 727 changer transitions 0/995 dead transitions. [2024-06-28 02:54:01,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 995 transitions, 20088 flow [2024-06-28 02:54:01,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:54:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:54:01,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-28 02:54:01,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 02:54:01,827 INFO L175 Difference]: Start difference. First operand has 345 places, 914 transitions, 16348 flow. Second operand 10 states and 209 transitions. [2024-06-28 02:54:01,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 995 transitions, 20088 flow [2024-06-28 02:54:03,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 995 transitions, 19893 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 02:54:03,791 INFO L231 Difference]: Finished difference. Result has 349 places, 938 transitions, 18368 flow [2024-06-28 02:54:03,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16171, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=914, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=703, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18368, PETRI_PLACES=349, PETRI_TRANSITIONS=938} [2024-06-28 02:54:03,791 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 304 predicate places. [2024-06-28 02:54:03,791 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 938 transitions, 18368 flow [2024-06-28 02:54:03,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:54:03,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:03,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:03,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:54:03,792 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:03,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:03,792 INFO L85 PathProgramCache]: Analyzing trace with hash 465988082, now seen corresponding path program 28 times [2024-06-28 02:54:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:03,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029630299] [2024-06-28 02:54:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:03,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:04,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:04,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029630299] [2024-06-28 02:54:04,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029630299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:04,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:04,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:54:04,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472359233] [2024-06-28 02:54:04,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:04,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:54:04,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:04,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:54:04,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:54:05,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:54:05,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 938 transitions, 18368 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:54:05,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:05,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:54:05,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:08,064 INFO L124 PetriNetUnfolderBase]: 6331/10106 cut-off events. [2024-06-28 02:54:08,064 INFO L125 PetriNetUnfolderBase]: For 841928/841931 co-relation queries the response was YES. [2024-06-28 02:54:08,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84134 conditions, 10106 events. 6331/10106 cut-off events. For 841928/841931 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 67095 event pairs, 1231 based on Foata normal form. 10/10113 useless extension candidates. Maximal degree in co-relation 83998. Up to 5594 conditions per place. [2024-06-28 02:54:08,201 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 292 selfloop transitions, 719 changer transitions 0/1016 dead transitions. [2024-06-28 02:54:08,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 1016 transitions, 22337 flow [2024-06-28 02:54:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:54:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:54:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-28 02:54:08,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-06-28 02:54:08,203 INFO L175 Difference]: Start difference. First operand has 349 places, 938 transitions, 18368 flow. Second operand 10 states and 214 transitions. [2024-06-28 02:54:08,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 1016 transitions, 22337 flow [2024-06-28 02:54:10,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 1016 transitions, 21167 flow, removed 136 selfloop flow, removed 6 redundant places. [2024-06-28 02:54:10,787 INFO L231 Difference]: Finished difference. Result has 353 places, 962 transitions, 19439 flow [2024-06-28 02:54:10,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17282, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=695, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19439, PETRI_PLACES=353, PETRI_TRANSITIONS=962} [2024-06-28 02:54:10,788 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 308 predicate places. [2024-06-28 02:54:10,788 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 962 transitions, 19439 flow [2024-06-28 02:54:10,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:54:10,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:10,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:10,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:54:10,789 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:10,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:10,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1420236434, now seen corresponding path program 29 times [2024-06-28 02:54:10,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:10,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986870291] [2024-06-28 02:54:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:10,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:11,867 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 02:54:11,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:11,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986870291] [2024-06-28 02:54:11,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986870291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:11,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:11,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:54:11,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966081492] [2024-06-28 02:54:11,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:11,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:54:11,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:11,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:54:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:54:11,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:54:11,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 962 transitions, 19439 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:54:11,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:11,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:54:11,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:15,020 INFO L124 PetriNetUnfolderBase]: 6303/10079 cut-off events. [2024-06-28 02:54:15,020 INFO L125 PetriNetUnfolderBase]: For 835530/835533 co-relation queries the response was YES. [2024-06-28 02:54:15,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82838 conditions, 10079 events. 6303/10079 cut-off events. For 835530/835533 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 67085 event pairs, 1189 based on Foata normal form. 10/10086 useless extension candidates. Maximal degree in co-relation 82702. Up to 5571 conditions per place. [2024-06-28 02:54:15,165 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 286 selfloop transitions, 723 changer transitions 0/1014 dead transitions. [2024-06-28 02:54:15,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1014 transitions, 22402 flow [2024-06-28 02:54:15,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:54:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:54:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-28 02:54:15,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47954545454545455 [2024-06-28 02:54:15,166 INFO L175 Difference]: Start difference. First operand has 353 places, 962 transitions, 19439 flow. Second operand 10 states and 211 transitions. [2024-06-28 02:54:15,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1014 transitions, 22402 flow [2024-06-28 02:54:17,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 1014 transitions, 20939 flow, removed 170 selfloop flow, removed 6 redundant places. [2024-06-28 02:54:17,158 INFO L231 Difference]: Finished difference. Result has 357 places, 962 transitions, 19457 flow [2024-06-28 02:54:17,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17984, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=723, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19457, PETRI_PLACES=357, PETRI_TRANSITIONS=962} [2024-06-28 02:54:17,159 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 312 predicate places. [2024-06-28 02:54:17,159 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 962 transitions, 19457 flow [2024-06-28 02:54:17,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:54:17,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:17,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:17,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:54:17,159 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:17,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:17,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1420029044, now seen corresponding path program 30 times [2024-06-28 02:54:17,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:17,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535394094] [2024-06-28 02:54:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:17,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:18,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:18,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535394094] [2024-06-28 02:54:18,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535394094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:18,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:18,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:54:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290134580] [2024-06-28 02:54:18,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:18,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:54:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:54:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:54:18,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:54:18,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 962 transitions, 19457 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:54:18,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:18,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:54:18,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:21,602 INFO L124 PetriNetUnfolderBase]: 6275/10042 cut-off events. [2024-06-28 02:54:21,602 INFO L125 PetriNetUnfolderBase]: For 817053/817056 co-relation queries the response was YES. [2024-06-28 02:54:21,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81523 conditions, 10042 events. 6275/10042 cut-off events. For 817053/817056 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 66980 event pairs, 1329 based on Foata normal form. 10/10049 useless extension candidates. Maximal degree in co-relation 81387. Up to 5548 conditions per place. [2024-06-28 02:54:21,755 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 298 selfloop transitions, 713 changer transitions 0/1016 dead transitions. [2024-06-28 02:54:21,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 1016 transitions, 22284 flow [2024-06-28 02:54:21,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:54:21,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:54:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 211 transitions. [2024-06-28 02:54:21,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47954545454545455 [2024-06-28 02:54:21,756 INFO L175 Difference]: Start difference. First operand has 357 places, 962 transitions, 19457 flow. Second operand 10 states and 211 transitions. [2024-06-28 02:54:21,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 1016 transitions, 22284 flow [2024-06-28 02:54:23,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1016 transitions, 20737 flow, removed 80 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:23,856 INFO L231 Difference]: Finished difference. Result has 358 places, 962 transitions, 19367 flow [2024-06-28 02:54:23,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17914, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=713, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19367, PETRI_PLACES=358, PETRI_TRANSITIONS=962} [2024-06-28 02:54:23,857 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 313 predicate places. [2024-06-28 02:54:23,857 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 962 transitions, 19367 flow [2024-06-28 02:54:23,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:54:23,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:23,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:23,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:54:23,858 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:23,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:23,858 INFO L85 PathProgramCache]: Analyzing trace with hash -648375186, now seen corresponding path program 5 times [2024-06-28 02:54:23,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:23,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148059174] [2024-06-28 02:54:23,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:23,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:24,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:24,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148059174] [2024-06-28 02:54:24,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148059174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:24,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:24,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:54:24,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659519127] [2024-06-28 02:54:24,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:24,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:54:24,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:24,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:54:24,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:54:25,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:54:25,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 962 transitions, 19367 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:25,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:25,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:54:25,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:27,172 INFO L124 PetriNetUnfolderBase]: 5286/8547 cut-off events. [2024-06-28 02:54:27,172 INFO L125 PetriNetUnfolderBase]: For 876617/877186 co-relation queries the response was YES. [2024-06-28 02:54:27,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73504 conditions, 8547 events. 5286/8547 cut-off events. For 876617/877186 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 56715 event pairs, 1050 based on Foata normal form. 53/8396 useless extension candidates. Maximal degree in co-relation 73368. Up to 7052 conditions per place. [2024-06-28 02:54:27,286 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 834 selfloop transitions, 54 changer transitions 0/1000 dead transitions. [2024-06-28 02:54:27,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 1000 transitions, 21592 flow [2024-06-28 02:54:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:54:27,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:54:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 02:54:27,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-28 02:54:27,288 INFO L175 Difference]: Start difference. First operand has 358 places, 962 transitions, 19367 flow. Second operand 8 states and 157 transitions. [2024-06-28 02:54:27,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 1000 transitions, 21592 flow [2024-06-28 02:54:29,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 1000 transitions, 19547 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:54:29,290 INFO L231 Difference]: Finished difference. Result has 355 places, 986 transitions, 17850 flow [2024-06-28 02:54:29,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17334, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=917, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17850, PETRI_PLACES=355, PETRI_TRANSITIONS=986} [2024-06-28 02:54:29,292 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 310 predicate places. [2024-06-28 02:54:29,292 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 986 transitions, 17850 flow [2024-06-28 02:54:29,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:29,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:29,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:29,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:54:29,293 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:29,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:29,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1076471391, now seen corresponding path program 2 times [2024-06-28 02:54:29,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:29,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787021104] [2024-06-28 02:54:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:29,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:30,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:30,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787021104] [2024-06-28 02:54:30,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787021104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:30,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:30,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:54:30,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183570863] [2024-06-28 02:54:30,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:30,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:54:30,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:30,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:54:30,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:54:30,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 02:54:30,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 986 transitions, 17850 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:30,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:30,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 02:54:30,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:32,609 INFO L124 PetriNetUnfolderBase]: 4903/7794 cut-off events. [2024-06-28 02:54:32,609 INFO L125 PetriNetUnfolderBase]: For 862669/863272 co-relation queries the response was YES. [2024-06-28 02:54:32,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65935 conditions, 7794 events. 4903/7794 cut-off events. For 862669/863272 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 49782 event pairs, 1169 based on Foata normal form. 103/7441 useless extension candidates. Maximal degree in co-relation 65798. Up to 6418 conditions per place. [2024-06-28 02:54:32,709 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 806 selfloop transitions, 29 changer transitions 0/1003 dead transitions. [2024-06-28 02:54:32,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1003 transitions, 19636 flow [2024-06-28 02:54:32,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:54:32,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:54:32,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-28 02:54:32,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-06-28 02:54:32,711 INFO L175 Difference]: Start difference. First operand has 355 places, 986 transitions, 17850 flow. Second operand 7 states and 146 transitions. [2024-06-28 02:54:32,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1003 transitions, 19636 flow [2024-06-28 02:54:34,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 1003 transitions, 19550 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 02:54:34,081 INFO L231 Difference]: Finished difference. Result has 360 places, 989 transitions, 17887 flow [2024-06-28 02:54:34,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17764, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=957, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17887, PETRI_PLACES=360, PETRI_TRANSITIONS=989} [2024-06-28 02:54:34,082 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 315 predicate places. [2024-06-28 02:54:34,082 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 989 transitions, 17887 flow [2024-06-28 02:54:34,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:34,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:34,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:34,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:54:34,082 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:34,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:34,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1519672977, now seen corresponding path program 3 times [2024-06-28 02:54:34,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:34,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092843726] [2024-06-28 02:54:34,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:34,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:35,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:35,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092843726] [2024-06-28 02:54:35,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092843726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:35,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:35,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:54:35,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050433102] [2024-06-28 02:54:35,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:35,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:54:35,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:54:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:54:35,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:54:35,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 989 transitions, 17887 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:35,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:35,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:54:35,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:38,143 INFO L124 PetriNetUnfolderBase]: 6019/9732 cut-off events. [2024-06-28 02:54:38,143 INFO L125 PetriNetUnfolderBase]: For 819550/819634 co-relation queries the response was YES. [2024-06-28 02:54:38,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76633 conditions, 9732 events. 6019/9732 cut-off events. For 819550/819634 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 66234 event pairs, 1738 based on Foata normal form. 82/9696 useless extension candidates. Maximal degree in co-relation 76494. Up to 8353 conditions per place. [2024-06-28 02:54:38,261 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 893 selfloop transitions, 80 changer transitions 0/1034 dead transitions. [2024-06-28 02:54:38,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 1034 transitions, 20263 flow [2024-06-28 02:54:38,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:54:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:54:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 02:54:38,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-06-28 02:54:38,262 INFO L175 Difference]: Start difference. First operand has 360 places, 989 transitions, 17887 flow. Second operand 9 states and 178 transitions. [2024-06-28 02:54:38,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 1034 transitions, 20263 flow [2024-06-28 02:54:40,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 1034 transitions, 20168 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:54:40,130 INFO L231 Difference]: Finished difference. Result has 365 places, 1006 transitions, 18253 flow [2024-06-28 02:54:40,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17794, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=989, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=923, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18253, PETRI_PLACES=365, PETRI_TRANSITIONS=1006} [2024-06-28 02:54:40,131 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 320 predicate places. [2024-06-28 02:54:40,131 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 1006 transitions, 18253 flow [2024-06-28 02:54:40,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:40,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:40,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:40,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:54:40,132 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:40,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:40,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1531100817, now seen corresponding path program 4 times [2024-06-28 02:54:40,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:40,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625948714] [2024-06-28 02:54:40,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:40,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:41,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:41,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625948714] [2024-06-28 02:54:41,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625948714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:41,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:41,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:54:41,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774762694] [2024-06-28 02:54:41,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:41,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:54:41,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:41,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:54:41,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:54:41,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:54:41,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 1006 transitions, 18253 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:41,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:41,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:54:41,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:43,943 INFO L124 PetriNetUnfolderBase]: 6036/9760 cut-off events. [2024-06-28 02:54:43,944 INFO L125 PetriNetUnfolderBase]: For 825820/825894 co-relation queries the response was YES. [2024-06-28 02:54:44,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77663 conditions, 9760 events. 6036/9760 cut-off events. For 825820/825894 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 66481 event pairs, 1718 based on Foata normal form. 74/9705 useless extension candidates. Maximal degree in co-relation 77522. Up to 8265 conditions per place. [2024-06-28 02:54:44,083 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 891 selfloop transitions, 89 changer transitions 0/1041 dead transitions. [2024-06-28 02:54:44,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 1041 transitions, 20750 flow [2024-06-28 02:54:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:54:44,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:54:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 02:54:44,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 02:54:44,084 INFO L175 Difference]: Start difference. First operand has 365 places, 1006 transitions, 18253 flow. Second operand 9 states and 181 transitions. [2024-06-28 02:54:44,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 1041 transitions, 20750 flow [2024-06-28 02:54:46,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 1041 transitions, 20598 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 02:54:46,054 INFO L231 Difference]: Finished difference. Result has 370 places, 1010 transitions, 18410 flow [2024-06-28 02:54:46,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=18101, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=919, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18410, PETRI_PLACES=370, PETRI_TRANSITIONS=1010} [2024-06-28 02:54:46,055 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 325 predicate places. [2024-06-28 02:54:46,055 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 1010 transitions, 18410 flow [2024-06-28 02:54:46,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:46,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:46,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:46,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:54:46,056 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:46,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:46,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1205973747, now seen corresponding path program 5 times [2024-06-28 02:54:46,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:46,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818067992] [2024-06-28 02:54:46,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:46,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:47,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:47,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818067992] [2024-06-28 02:54:47,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818067992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:47,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:47,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:54:47,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337202891] [2024-06-28 02:54:47,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:47,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:54:47,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:47,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:54:47,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:54:47,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:54:47,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 1010 transitions, 18410 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:47,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:47,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:54:47,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:49,824 INFO L124 PetriNetUnfolderBase]: 6053/9785 cut-off events. [2024-06-28 02:54:49,824 INFO L125 PetriNetUnfolderBase]: For 845669/845747 co-relation queries the response was YES. [2024-06-28 02:54:49,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76849 conditions, 9785 events. 6053/9785 cut-off events. For 845669/845747 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 66681 event pairs, 1767 based on Foata normal form. 78/9730 useless extension candidates. Maximal degree in co-relation 76707. Up to 8407 conditions per place. [2024-06-28 02:54:49,964 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 901 selfloop transitions, 78 changer transitions 0/1040 dead transitions. [2024-06-28 02:54:49,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 1040 transitions, 20593 flow [2024-06-28 02:54:49,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:54:49,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:54:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 02:54:49,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-28 02:54:49,965 INFO L175 Difference]: Start difference. First operand has 370 places, 1010 transitions, 18410 flow. Second operand 9 states and 179 transitions. [2024-06-28 02:54:49,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 1040 transitions, 20593 flow [2024-06-28 02:54:51,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 1040 transitions, 20403 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 02:54:51,885 INFO L231 Difference]: Finished difference. Result has 375 places, 1013 transitions, 18478 flow [2024-06-28 02:54:51,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=18242, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=932, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18478, PETRI_PLACES=375, PETRI_TRANSITIONS=1013} [2024-06-28 02:54:51,886 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 330 predicate places. [2024-06-28 02:54:51,886 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 1013 transitions, 18478 flow [2024-06-28 02:54:51,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:51,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:51,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:51,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:54:51,886 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:51,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:51,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1205696700, now seen corresponding path program 31 times [2024-06-28 02:54:51,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:51,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531562072] [2024-06-28 02:54:51,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:51,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:53,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:53,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:53,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531562072] [2024-06-28 02:54:53,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531562072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:53,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:53,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:54:53,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032221969] [2024-06-28 02:54:53,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:53,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:54:53,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:53,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:54:53,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:54:53,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:54:53,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 1013 transitions, 18478 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:54:53,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:53,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:54:53,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:56,027 INFO L124 PetriNetUnfolderBase]: 6459/10342 cut-off events. [2024-06-28 02:54:56,027 INFO L125 PetriNetUnfolderBase]: For 836097/836106 co-relation queries the response was YES. [2024-06-28 02:54:56,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81176 conditions, 10342 events. 6459/10342 cut-off events. For 836097/836106 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 69297 event pairs, 1112 based on Foata normal form. 10/10326 useless extension candidates. Maximal degree in co-relation 81031. Up to 5747 conditions per place. [2024-06-28 02:54:56,183 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 284 selfloop transitions, 780 changer transitions 0/1069 dead transitions. [2024-06-28 02:54:56,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 1069 transitions, 21602 flow [2024-06-28 02:54:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:54:56,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:54:56,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-28 02:54:56,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2024-06-28 02:54:56,184 INFO L175 Difference]: Start difference. First operand has 375 places, 1013 transitions, 18478 flow. Second operand 10 states and 202 transitions. [2024-06-28 02:54:56,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 1069 transitions, 21602 flow [2024-06-28 02:54:58,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1069 transitions, 21412 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 02:54:58,606 INFO L231 Difference]: Finished difference. Result has 379 places, 1025 transitions, 20247 flow [2024-06-28 02:54:58,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=18288, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1013, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=768, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20247, PETRI_PLACES=379, PETRI_TRANSITIONS=1025} [2024-06-28 02:54:58,607 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 334 predicate places. [2024-06-28 02:54:58,607 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 1025 transitions, 20247 flow [2024-06-28 02:54:58,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:54:58,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:58,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:58,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:54:58,608 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:54:58,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1784013447, now seen corresponding path program 6 times [2024-06-28 02:54:58,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:58,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184139955] [2024-06-28 02:54:58,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:58,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:59,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:59,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184139955] [2024-06-28 02:54:59,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184139955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:59,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:59,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:54:59,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102994129] [2024-06-28 02:54:59,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:59,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:54:59,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:59,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:54:59,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:55:00,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:55:00,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 1025 transitions, 20247 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:00,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:00,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:55:00,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:02,780 INFO L124 PetriNetUnfolderBase]: 6109/9896 cut-off events. [2024-06-28 02:55:02,780 INFO L125 PetriNetUnfolderBase]: For 911759/911836 co-relation queries the response was YES. [2024-06-28 02:55:02,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80943 conditions, 9896 events. 6109/9896 cut-off events. For 911759/911836 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 67885 event pairs, 1800 based on Foata normal form. 77/9841 useless extension candidates. Maximal degree in co-relation 80797. Up to 8487 conditions per place. [2024-06-28 02:55:02,942 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 917 selfloop transitions, 75 changer transitions 0/1053 dead transitions. [2024-06-28 02:55:02,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 1053 transitions, 22388 flow [2024-06-28 02:55:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:55:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:55:02,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 02:55:02,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 02:55:02,943 INFO L175 Difference]: Start difference. First operand has 379 places, 1025 transitions, 20247 flow. Second operand 9 states and 180 transitions. [2024-06-28 02:55:02,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 1053 transitions, 22388 flow [2024-06-28 02:55:05,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1053 transitions, 21132 flow, removed 117 selfloop flow, removed 7 redundant places. [2024-06-28 02:55:05,820 INFO L231 Difference]: Finished difference. Result has 381 places, 1025 transitions, 19149 flow [2024-06-28 02:55:05,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=18991, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1025, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=950, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19149, PETRI_PLACES=381, PETRI_TRANSITIONS=1025} [2024-06-28 02:55:05,821 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 336 predicate places. [2024-06-28 02:55:05,821 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1025 transitions, 19149 flow [2024-06-28 02:55:05,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:05,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:05,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:05,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:55:05,821 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:05,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash 957535322, now seen corresponding path program 32 times [2024-06-28 02:55:05,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:05,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28202698] [2024-06-28 02:55:05,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:05,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:06,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:06,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28202698] [2024-06-28 02:55:06,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28202698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:06,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:06,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:55:06,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83907917] [2024-06-28 02:55:06,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:06,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:55:06,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:55:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:55:07,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:55:07,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1025 transitions, 19149 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:55:07,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:07,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:55:07,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:10,104 INFO L124 PetriNetUnfolderBase]: 6515/10468 cut-off events. [2024-06-28 02:55:10,104 INFO L125 PetriNetUnfolderBase]: For 888315/888324 co-relation queries the response was YES. [2024-06-28 02:55:10,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81991 conditions, 10468 events. 6515/10468 cut-off events. For 888315/888324 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 70703 event pairs, 1423 based on Foata normal form. 10/10452 useless extension candidates. Maximal degree in co-relation 81844. Up to 5793 conditions per place. [2024-06-28 02:55:10,332 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 335 selfloop transitions, 741 changer transitions 0/1081 dead transitions. [2024-06-28 02:55:10,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 1081 transitions, 22286 flow [2024-06-28 02:55:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:55:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:55:10,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 207 transitions. [2024-06-28 02:55:10,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47045454545454546 [2024-06-28 02:55:10,333 INFO L175 Difference]: Start difference. First operand has 381 places, 1025 transitions, 19149 flow. Second operand 10 states and 207 transitions. [2024-06-28 02:55:10,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 1081 transitions, 22286 flow [2024-06-28 02:55:12,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1081 transitions, 22043 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:12,956 INFO L231 Difference]: Finished difference. Result has 380 places, 1037 transitions, 20775 flow [2024-06-28 02:55:12,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=18906, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1025, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=729, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20775, PETRI_PLACES=380, PETRI_TRANSITIONS=1037} [2024-06-28 02:55:12,957 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 335 predicate places. [2024-06-28 02:55:12,957 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 1037 transitions, 20775 flow [2024-06-28 02:55:12,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:55:12,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:12,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:12,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:55:12,958 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:12,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:12,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1791642144, now seen corresponding path program 33 times [2024-06-28 02:55:12,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:12,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796468442] [2024-06-28 02:55:12,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:12,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:14,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:14,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796468442] [2024-06-28 02:55:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796468442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:55:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472690183] [2024-06-28 02:55:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:14,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:55:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:55:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:55:14,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:55:14,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 1037 transitions, 20775 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:55:14,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:14,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:55:14,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:17,395 INFO L124 PetriNetUnfolderBase]: 6671/10726 cut-off events. [2024-06-28 02:55:17,395 INFO L125 PetriNetUnfolderBase]: For 985975/985984 co-relation queries the response was YES. [2024-06-28 02:55:17,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87557 conditions, 10726 events. 6671/10726 cut-off events. For 985975/985984 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 72900 event pairs, 1347 based on Foata normal form. 10/10710 useless extension candidates. Maximal degree in co-relation 87412. Up to 5932 conditions per place. [2024-06-28 02:55:17,612 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 320 selfloop transitions, 777 changer transitions 0/1102 dead transitions. [2024-06-28 02:55:17,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1102 transitions, 24543 flow [2024-06-28 02:55:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:55:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:55:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 207 transitions. [2024-06-28 02:55:17,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47045454545454546 [2024-06-28 02:55:17,613 INFO L175 Difference]: Start difference. First operand has 380 places, 1037 transitions, 20775 flow. Second operand 10 states and 207 transitions. [2024-06-28 02:55:17,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1102 transitions, 24543 flow [2024-06-28 02:55:20,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1102 transitions, 21750 flow, removed 116 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:20,529 INFO L231 Difference]: Finished difference. Result has 379 places, 1061 transitions, 20341 flow [2024-06-28 02:55:20,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=18126, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=753, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20341, PETRI_PLACES=379, PETRI_TRANSITIONS=1061} [2024-06-28 02:55:20,530 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 334 predicate places. [2024-06-28 02:55:20,530 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 1061 transitions, 20341 flow [2024-06-28 02:55:20,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:55:20,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:20,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:20,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:55:20,531 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:20,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:20,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1791647724, now seen corresponding path program 34 times [2024-06-28 02:55:20,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:20,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091231529] [2024-06-28 02:55:20,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:20,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:21,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:21,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:21,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091231529] [2024-06-28 02:55:21,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091231529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:21,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:21,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:55:21,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641068397] [2024-06-28 02:55:21,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:21,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:55:21,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:21,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:55:21,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:55:21,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:55:21,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 1061 transitions, 20341 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:55:21,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:21,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:55:21,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:24,833 INFO L124 PetriNetUnfolderBase]: 6643/10701 cut-off events. [2024-06-28 02:55:24,834 INFO L125 PetriNetUnfolderBase]: For 931527/931536 co-relation queries the response was YES. [2024-06-28 02:55:25,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85617 conditions, 10701 events. 6643/10701 cut-off events. For 931527/931536 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 73001 event pairs, 1330 based on Foata normal form. 10/10685 useless extension candidates. Maximal degree in co-relation 85472. Up to 5909 conditions per place. [2024-06-28 02:55:25,081 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 315 selfloop transitions, 780 changer transitions 0/1100 dead transitions. [2024-06-28 02:55:25,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1100 transitions, 23061 flow [2024-06-28 02:55:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:55:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:55:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 02:55:25,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-28 02:55:25,082 INFO L175 Difference]: Start difference. First operand has 379 places, 1061 transitions, 20341 flow. Second operand 10 states and 204 transitions. [2024-06-28 02:55:25,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1100 transitions, 23061 flow [2024-06-28 02:55:27,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 1100 transitions, 20127 flow, removed 128 selfloop flow, removed 9 redundant places. [2024-06-28 02:55:27,873 INFO L231 Difference]: Finished difference. Result has 380 places, 1061 transitions, 18984 flow [2024-06-28 02:55:27,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17407, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=780, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18984, PETRI_PLACES=380, PETRI_TRANSITIONS=1061} [2024-06-28 02:55:27,874 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 335 predicate places. [2024-06-28 02:55:27,874 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 1061 transitions, 18984 flow [2024-06-28 02:55:27,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:55:27,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:27,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:27,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:55:27,874 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:27,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:27,874 INFO L85 PathProgramCache]: Analyzing trace with hash 372842928, now seen corresponding path program 35 times [2024-06-28 02:55:27,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:27,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748244429] [2024-06-28 02:55:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:27,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:28,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:28,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748244429] [2024-06-28 02:55:28,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748244429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:28,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:28,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:55:28,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804655462] [2024-06-28 02:55:28,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:28,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:55:28,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:28,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:55:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:55:29,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:55:29,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 1061 transitions, 18984 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:55:29,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:29,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:55:29,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:32,075 INFO L124 PetriNetUnfolderBase]: 6615/10656 cut-off events. [2024-06-28 02:55:32,075 INFO L125 PetriNetUnfolderBase]: For 873154/873163 co-relation queries the response was YES. [2024-06-28 02:55:32,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84125 conditions, 10656 events. 6615/10656 cut-off events. For 873154/873163 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 72626 event pairs, 1417 based on Foata normal form. 10/10640 useless extension candidates. Maximal degree in co-relation 83979. Up to 5886 conditions per place. [2024-06-28 02:55:32,251 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 324 selfloop transitions, 771 changer transitions 0/1100 dead transitions. [2024-06-28 02:55:32,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 1100 transitions, 21492 flow [2024-06-28 02:55:32,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:55:32,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:55:32,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 02:55:32,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-28 02:55:32,252 INFO L175 Difference]: Start difference. First operand has 380 places, 1061 transitions, 18984 flow. Second operand 10 states and 204 transitions. [2024-06-28 02:55:32,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 1100 transitions, 21492 flow [2024-06-28 02:55:35,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1100 transitions, 19751 flow, removed 106 selfloop flow, removed 9 redundant places. [2024-06-28 02:55:35,098 INFO L231 Difference]: Finished difference. Result has 381 places, 1061 transitions, 18802 flow [2024-06-28 02:55:35,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17243, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=771, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18802, PETRI_PLACES=381, PETRI_TRANSITIONS=1061} [2024-06-28 02:55:35,099 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 336 predicate places. [2024-06-28 02:55:35,099 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 1061 transitions, 18802 flow [2024-06-28 02:55:35,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:55:35,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:35,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:35,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:55:35,100 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:35,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:35,101 INFO L85 PathProgramCache]: Analyzing trace with hash 621530626, now seen corresponding path program 6 times [2024-06-28 02:55:35,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:35,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259781030] [2024-06-28 02:55:35,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:35,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:36,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:36,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259781030] [2024-06-28 02:55:36,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259781030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:36,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:36,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:55:36,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342921951] [2024-06-28 02:55:36,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:36,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:55:36,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:36,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:55:36,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:55:36,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:55:36,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 1061 transitions, 18802 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:36,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:36,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:55:36,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:38,362 INFO L124 PetriNetUnfolderBase]: 5497/8929 cut-off events. [2024-06-28 02:55:38,362 INFO L125 PetriNetUnfolderBase]: For 973403/973913 co-relation queries the response was YES. [2024-06-28 02:55:38,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75345 conditions, 8929 events. 5497/8929 cut-off events. For 973403/973913 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 60179 event pairs, 1032 based on Foata normal form. 58/8749 useless extension candidates. Maximal degree in co-relation 75198. Up to 7344 conditions per place. [2024-06-28 02:55:38,520 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 888 selfloop transitions, 74 changer transitions 0/1074 dead transitions. [2024-06-28 02:55:38,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1074 transitions, 20839 flow [2024-06-28 02:55:38,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:55:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:55:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 02:55:38,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-28 02:55:38,522 INFO L175 Difference]: Start difference. First operand has 381 places, 1061 transitions, 18802 flow. Second operand 8 states and 153 transitions. [2024-06-28 02:55:38,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1074 transitions, 20839 flow [2024-06-28 02:55:40,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 1074 transitions, 19087 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:40,996 INFO L231 Difference]: Finished difference. Result has 378 places, 1064 transitions, 17270 flow [2024-06-28 02:55:40,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17050, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1061, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=987, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17270, PETRI_PLACES=378, PETRI_TRANSITIONS=1064} [2024-06-28 02:55:40,997 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 333 predicate places. [2024-06-28 02:55:40,997 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 1064 transitions, 17270 flow [2024-06-28 02:55:40,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:40,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:40,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:40,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:55:40,998 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:40,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:40,998 INFO L85 PathProgramCache]: Analyzing trace with hash -633642591, now seen corresponding path program 3 times [2024-06-28 02:55:40,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:40,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511105802] [2024-06-28 02:55:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:40,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:42,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:42,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511105802] [2024-06-28 02:55:42,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511105802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:42,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:42,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:55:42,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261657115] [2024-06-28 02:55:42,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:42,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:55:42,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:42,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:55:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:55:42,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 02:55:42,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 1064 transitions, 17270 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:42,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:42,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 02:55:42,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:44,153 INFO L124 PetriNetUnfolderBase]: 5134/8162 cut-off events. [2024-06-28 02:55:44,153 INFO L125 PetriNetUnfolderBase]: For 1012448/1013100 co-relation queries the response was YES. [2024-06-28 02:55:44,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68150 conditions, 8162 events. 5134/8162 cut-off events. For 1012448/1013100 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 52577 event pairs, 1179 based on Foata normal form. 111/7747 useless extension candidates. Maximal degree in co-relation 68002. Up to 6734 conditions per place. [2024-06-28 02:55:44,289 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 877 selfloop transitions, 30 changer transitions 0/1076 dead transitions. [2024-06-28 02:55:44,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 1076 transitions, 19176 flow [2024-06-28 02:55:44,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:55:44,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:55:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-06-28 02:55:44,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-06-28 02:55:44,290 INFO L175 Difference]: Start difference. First operand has 378 places, 1064 transitions, 17270 flow. Second operand 7 states and 142 transitions. [2024-06-28 02:55:44,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 1076 transitions, 19176 flow [2024-06-28 02:55:46,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1076 transitions, 18978 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 02:55:46,458 INFO L231 Difference]: Finished difference. Result has 379 places, 1067 transitions, 17198 flow [2024-06-28 02:55:46,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17072, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1064, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1034, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17198, PETRI_PLACES=379, PETRI_TRANSITIONS=1067} [2024-06-28 02:55:46,459 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 334 predicate places. [2024-06-28 02:55:46,459 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 1067 transitions, 17198 flow [2024-06-28 02:55:46,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:46,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:46,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:55:46,459 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:46,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash -633137601, now seen corresponding path program 4 times [2024-06-28 02:55:46,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:46,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129051691] [2024-06-28 02:55:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:46,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:47,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:47,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129051691] [2024-06-28 02:55:47,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129051691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:47,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:47,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:55:47,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361640269] [2024-06-28 02:55:47,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:47,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:55:47,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:55:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:55:47,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 02:55:47,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 1067 transitions, 17198 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:47,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:47,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 02:55:47,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:49,584 INFO L124 PetriNetUnfolderBase]: 5131/8158 cut-off events. [2024-06-28 02:55:49,584 INFO L125 PetriNetUnfolderBase]: For 1031967/1032619 co-relation queries the response was YES. [2024-06-28 02:55:49,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68507 conditions, 8158 events. 5131/8158 cut-off events. For 1031967/1032619 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 52571 event pairs, 1179 based on Foata normal form. 111/7743 useless extension candidates. Maximal degree in co-relation 68358. Up to 6716 conditions per place. [2024-06-28 02:55:49,719 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 872 selfloop transitions, 41 changer transitions 0/1082 dead transitions. [2024-06-28 02:55:49,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 1082 transitions, 19136 flow [2024-06-28 02:55:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:55:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:55:49,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 02:55:49,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 02:55:49,720 INFO L175 Difference]: Start difference. First operand has 379 places, 1067 transitions, 17198 flow. Second operand 7 states and 143 transitions. [2024-06-28 02:55:49,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 1082 transitions, 19136 flow [2024-06-28 02:55:52,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1082 transitions, 19032 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 02:55:52,300 INFO L231 Difference]: Finished difference. Result has 382 places, 1073 transitions, 17283 flow [2024-06-28 02:55:52,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17094, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1067, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1027, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17283, PETRI_PLACES=382, PETRI_TRANSITIONS=1073} [2024-06-28 02:55:52,302 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 337 predicate places. [2024-06-28 02:55:52,302 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 1073 transitions, 17283 flow [2024-06-28 02:55:52,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:52,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:52,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:52,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:55:52,303 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:52,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:52,303 INFO L85 PathProgramCache]: Analyzing trace with hash -840199962, now seen corresponding path program 1 times [2024-06-28 02:55:52,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:52,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530515299] [2024-06-28 02:55:52,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:52,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:53,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:53,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530515299] [2024-06-28 02:55:53,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530515299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:53,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:53,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:55:53,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568883646] [2024-06-28 02:55:53,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:53,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:55:53,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:53,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:55:53,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:55:53,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:55:53,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1073 transitions, 17283 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:53,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:53,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:55:53,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:55,742 INFO L124 PetriNetUnfolderBase]: 6120/10039 cut-off events. [2024-06-28 02:55:55,742 INFO L125 PetriNetUnfolderBase]: For 947014/947093 co-relation queries the response was YES. [2024-06-28 02:55:55,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78398 conditions, 10039 events. 6120/10039 cut-off events. For 947014/947093 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 70399 event pairs, 1979 based on Foata normal form. 75/9987 useless extension candidates. Maximal degree in co-relation 78247. Up to 8638 conditions per place. [2024-06-28 02:55:55,898 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 1009 selfloop transitions, 15 changer transitions 0/1092 dead transitions. [2024-06-28 02:55:55,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1092 transitions, 19473 flow [2024-06-28 02:55:55,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:55:55,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:55:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 02:55:55,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-28 02:55:55,900 INFO L175 Difference]: Start difference. First operand has 382 places, 1073 transitions, 17283 flow. Second operand 7 states and 141 transitions. [2024-06-28 02:55:55,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1092 transitions, 19473 flow [2024-06-28 02:55:58,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 1092 transitions, 19388 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 02:55:59,004 INFO L231 Difference]: Finished difference. Result has 386 places, 1076 transitions, 17292 flow [2024-06-28 02:55:59,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17198, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1058, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17292, PETRI_PLACES=386, PETRI_TRANSITIONS=1076} [2024-06-28 02:55:59,006 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 341 predicate places. [2024-06-28 02:55:59,006 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 1076 transitions, 17292 flow [2024-06-28 02:55:59,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:59,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:59,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:59,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:55:59,007 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:55:59,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:59,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1151694872, now seen corresponding path program 2 times [2024-06-28 02:55:59,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:59,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504578888] [2024-06-28 02:55:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:59,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:00,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:00,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504578888] [2024-06-28 02:56:00,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504578888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:00,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:00,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:56:00,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902876645] [2024-06-28 02:56:00,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:00,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:56:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:00,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:56:00,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:56:00,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:56:00,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1076 transitions, 17292 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:00,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:00,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:56:00,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:02,764 INFO L124 PetriNetUnfolderBase]: 6130/10055 cut-off events. [2024-06-28 02:56:02,764 INFO L125 PetriNetUnfolderBase]: For 966774/966853 co-relation queries the response was YES. [2024-06-28 02:56:02,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79100 conditions, 10055 events. 6130/10055 cut-off events. For 966774/966853 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 70456 event pairs, 1979 based on Foata normal form. 75/10003 useless extension candidates. Maximal degree in co-relation 78947. Up to 8643 conditions per place. [2024-06-28 02:56:02,928 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 1005 selfloop transitions, 20 changer transitions 0/1093 dead transitions. [2024-06-28 02:56:02,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1093 transitions, 19470 flow [2024-06-28 02:56:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:56:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:56:02,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 02:56:02,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-28 02:56:02,929 INFO L175 Difference]: Start difference. First operand has 386 places, 1076 transitions, 17292 flow. Second operand 7 states and 141 transitions. [2024-06-28 02:56:02,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1093 transitions, 19470 flow [2024-06-28 02:56:05,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1093 transitions, 19398 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 02:56:05,873 INFO L231 Difference]: Finished difference. Result has 388 places, 1079 transitions, 17330 flow [2024-06-28 02:56:05,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17220, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1076, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1056, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17330, PETRI_PLACES=388, PETRI_TRANSITIONS=1079} [2024-06-28 02:56:05,873 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 343 predicate places. [2024-06-28 02:56:05,873 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 1079 transitions, 17330 flow [2024-06-28 02:56:05,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:05,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:05,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:05,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:56:05,874 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:05,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash -644316101, now seen corresponding path program 1 times [2024-06-28 02:56:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:05,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207389324] [2024-06-28 02:56:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:05,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:06,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:06,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207389324] [2024-06-28 02:56:06,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207389324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:06,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:06,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:56:06,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466444623] [2024-06-28 02:56:06,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:06,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:56:06,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:56:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:56:07,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:56:07,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 1079 transitions, 17330 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:07,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:07,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:56:07,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:09,389 INFO L124 PetriNetUnfolderBase]: 6140/10071 cut-off events. [2024-06-28 02:56:09,389 INFO L125 PetriNetUnfolderBase]: For 990762/990841 co-relation queries the response was YES. [2024-06-28 02:56:09,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79735 conditions, 10071 events. 6140/10071 cut-off events. For 990762/990841 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 70652 event pairs, 1978 based on Foata normal form. 76/10020 useless extension candidates. Maximal degree in co-relation 79581. Up to 8672 conditions per place. [2024-06-28 02:56:09,540 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 1012 selfloop transitions, 15 changer transitions 0/1095 dead transitions. [2024-06-28 02:56:09,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 1095 transitions, 19492 flow [2024-06-28 02:56:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:56:09,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:56:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 02:56:09,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-28 02:56:09,541 INFO L175 Difference]: Start difference. First operand has 388 places, 1079 transitions, 17330 flow. Second operand 7 states and 138 transitions. [2024-06-28 02:56:09,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 1095 transitions, 19492 flow [2024-06-28 02:56:12,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 1095 transitions, 19404 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 02:56:12,950 INFO L231 Difference]: Finished difference. Result has 390 places, 1082 transitions, 17328 flow [2024-06-28 02:56:12,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17242, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1064, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17328, PETRI_PLACES=390, PETRI_TRANSITIONS=1082} [2024-06-28 02:56:12,951 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 345 predicate places. [2024-06-28 02:56:12,951 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 1082 transitions, 17328 flow [2024-06-28 02:56:12,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:12,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:12,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:12,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:56:12,952 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:12,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:12,952 INFO L85 PathProgramCache]: Analyzing trace with hash -633396575, now seen corresponding path program 2 times [2024-06-28 02:56:12,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:12,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230330303] [2024-06-28 02:56:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:12,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:14,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:14,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230330303] [2024-06-28 02:56:14,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230330303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:14,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:14,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:56:14,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224039067] [2024-06-28 02:56:14,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:14,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:56:14,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:14,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:56:14,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:56:14,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:56:14,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 1082 transitions, 17328 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:14,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:14,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:56:14,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:16,593 INFO L124 PetriNetUnfolderBase]: 6150/10086 cut-off events. [2024-06-28 02:56:16,593 INFO L125 PetriNetUnfolderBase]: For 1005606/1005688 co-relation queries the response was YES. [2024-06-28 02:56:16,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80341 conditions, 10086 events. 6150/10086 cut-off events. For 1005606/1005688 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 70678 event pairs, 1980 based on Foata normal form. 77/10035 useless extension candidates. Maximal degree in co-relation 80186. Up to 8681 conditions per place. [2024-06-28 02:56:16,754 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 1006 selfloop transitions, 20 changer transitions 0/1094 dead transitions. [2024-06-28 02:56:16,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1094 transitions, 19464 flow [2024-06-28 02:56:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:56:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:56:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 02:56:16,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-28 02:56:16,755 INFO L175 Difference]: Start difference. First operand has 390 places, 1082 transitions, 17328 flow. Second operand 7 states and 136 transitions. [2024-06-28 02:56:16,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1094 transitions, 19464 flow [2024-06-28 02:56:19,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 1094 transitions, 19400 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 02:56:19,916 INFO L231 Difference]: Finished difference. Result has 392 places, 1085 transitions, 17362 flow [2024-06-28 02:56:19,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17264, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1082, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1062, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17362, PETRI_PLACES=392, PETRI_TRANSITIONS=1085} [2024-06-28 02:56:19,917 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 347 predicate places. [2024-06-28 02:56:19,917 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 1085 transitions, 17362 flow [2024-06-28 02:56:19,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:19,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:19,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:19,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:56:19,917 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:19,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash -633396792, now seen corresponding path program 3 times [2024-06-28 02:56:19,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:19,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124706935] [2024-06-28 02:56:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:19,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:21,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:21,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124706935] [2024-06-28 02:56:21,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124706935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:21,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:21,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:56:21,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750677381] [2024-06-28 02:56:21,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:21,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:56:21,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:21,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:56:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:56:21,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:56:21,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 1085 transitions, 17362 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:21,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:21,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:56:21,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:23,471 INFO L124 PetriNetUnfolderBase]: 6152/10091 cut-off events. [2024-06-28 02:56:23,472 INFO L125 PetriNetUnfolderBase]: For 1021466/1021548 co-relation queries the response was YES. [2024-06-28 02:56:23,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80841 conditions, 10091 events. 6152/10091 cut-off events. For 1021466/1021548 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 70766 event pairs, 1984 based on Foata normal form. 75/10038 useless extension candidates. Maximal degree in co-relation 80685. Up to 8660 conditions per place. [2024-06-28 02:56:23,625 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 1004 selfloop transitions, 27 changer transitions 0/1099 dead transitions. [2024-06-28 02:56:23,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1099 transitions, 19538 flow [2024-06-28 02:56:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:56:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:56:23,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 02:56:23,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 02:56:23,626 INFO L175 Difference]: Start difference. First operand has 392 places, 1085 transitions, 17362 flow. Second operand 7 states and 140 transitions. [2024-06-28 02:56:23,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 1099 transitions, 19538 flow [2024-06-28 02:56:26,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 1099 transitions, 19462 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 02:56:26,970 INFO L231 Difference]: Finished difference. Result has 394 places, 1088 transitions, 17420 flow [2024-06-28 02:56:26,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17286, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1058, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17420, PETRI_PLACES=394, PETRI_TRANSITIONS=1088} [2024-06-28 02:56:26,971 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 349 predicate places. [2024-06-28 02:56:26,971 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 1088 transitions, 17420 flow [2024-06-28 02:56:26,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:26,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:26,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:26,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:56:26,972 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:26,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:26,973 INFO L85 PathProgramCache]: Analyzing trace with hash -633129665, now seen corresponding path program 3 times [2024-06-28 02:56:26,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:26,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706356801] [2024-06-28 02:56:26,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:26,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:28,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:28,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:28,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706356801] [2024-06-28 02:56:28,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706356801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:28,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:28,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:56:28,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897143597] [2024-06-28 02:56:28,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:28,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:56:28,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:28,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:56:28,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:56:28,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:56:28,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 1088 transitions, 17420 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:28,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:28,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:56:28,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:30,651 INFO L124 PetriNetUnfolderBase]: 6151/10090 cut-off events. [2024-06-28 02:56:30,651 INFO L125 PetriNetUnfolderBase]: For 1038328/1038410 co-relation queries the response was YES. [2024-06-28 02:56:30,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81258 conditions, 10090 events. 6151/10090 cut-off events. For 1038328/1038410 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 70795 event pairs, 1980 based on Foata normal form. 78/10040 useless extension candidates. Maximal degree in co-relation 81101. Up to 8657 conditions per place. [2024-06-28 02:56:30,821 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 1006 selfloop transitions, 32 changer transitions 0/1106 dead transitions. [2024-06-28 02:56:30,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1106 transitions, 19816 flow [2024-06-28 02:56:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:56:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:56:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 02:56:30,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 02:56:30,822 INFO L175 Difference]: Start difference. First operand has 394 places, 1088 transitions, 17420 flow. Second operand 7 states and 140 transitions. [2024-06-28 02:56:30,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1106 transitions, 19816 flow [2024-06-28 02:56:34,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 1106 transitions, 19704 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 02:56:34,407 INFO L231 Difference]: Finished difference. Result has 396 places, 1094 transitions, 17497 flow [2024-06-28 02:56:34,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17308, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1088, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1059, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17497, PETRI_PLACES=396, PETRI_TRANSITIONS=1094} [2024-06-28 02:56:34,407 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 351 predicate places. [2024-06-28 02:56:34,407 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1094 transitions, 17497 flow [2024-06-28 02:56:34,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:34,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:34,408 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 02:56:34,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:56:34,408 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:34,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:34,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1515703427, now seen corresponding path program 1 times [2024-06-28 02:56:34,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:34,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635162527] [2024-06-28 02:56:34,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:34,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:34,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:35,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:35,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635162527] [2024-06-28 02:56:35,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635162527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:35,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:35,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:56:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792461735] [2024-06-28 02:56:35,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:35,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:56:35,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:56:35,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:56:35,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:56:35,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1094 transitions, 17497 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:35,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:35,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:56:35,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:38,028 INFO L124 PetriNetUnfolderBase]: 6790/10915 cut-off events. [2024-06-28 02:56:38,028 INFO L125 PetriNetUnfolderBase]: For 1032049/1032060 co-relation queries the response was YES. [2024-06-28 02:56:38,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87582 conditions, 10915 events. 6790/10915 cut-off events. For 1032049/1032060 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 74738 event pairs, 1525 based on Foata normal form. 14/10926 useless extension candidates. Maximal degree in co-relation 87424. Up to 8970 conditions per place. [2024-06-28 02:56:38,244 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 847 selfloop transitions, 350 changer transitions 0/1202 dead transitions. [2024-06-28 02:56:38,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1202 transitions, 21492 flow [2024-06-28 02:56:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:56:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:56:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 02:56:38,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-28 02:56:38,245 INFO L175 Difference]: Start difference. First operand has 396 places, 1094 transitions, 17497 flow. Second operand 10 states and 204 transitions. [2024-06-28 02:56:38,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1202 transitions, 21492 flow [2024-06-28 02:56:42,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 1202 transitions, 21419 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-06-28 02:56:42,030 INFO L231 Difference]: Finished difference. Result has 406 places, 1160 transitions, 19603 flow [2024-06-28 02:56:42,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=17424, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1094, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=789, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=19603, PETRI_PLACES=406, PETRI_TRANSITIONS=1160} [2024-06-28 02:56:42,031 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 361 predicate places. [2024-06-28 02:56:42,031 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 1160 transitions, 19603 flow [2024-06-28 02:56:42,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:42,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:42,031 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 02:56:42,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:56:42,031 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:42,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:42,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1420391001, now seen corresponding path program 2 times [2024-06-28 02:56:42,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:42,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715159015] [2024-06-28 02:56:42,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:42,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:42,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715159015] [2024-06-28 02:56:42,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715159015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:42,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:42,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:56:42,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515956020] [2024-06-28 02:56:42,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:42,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:56:42,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:42,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:56:42,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:56:43,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:56:43,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 1160 transitions, 19603 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:43,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:43,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:56:43,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:45,865 INFO L124 PetriNetUnfolderBase]: 6815/10950 cut-off events. [2024-06-28 02:56:45,865 INFO L125 PetriNetUnfolderBase]: For 1063245/1063256 co-relation queries the response was YES. [2024-06-28 02:56:45,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90510 conditions, 10950 events. 6815/10950 cut-off events. For 1063245/1063256 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 74972 event pairs, 1540 based on Foata normal form. 18/10965 useless extension candidates. Maximal degree in co-relation 90347. Up to 9084 conditions per place. [2024-06-28 02:56:46,047 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 846 selfloop transitions, 351 changer transitions 0/1202 dead transitions. [2024-06-28 02:56:46,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1202 transitions, 22372 flow [2024-06-28 02:56:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:56:46,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:56:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-28 02:56:46,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45681818181818185 [2024-06-28 02:56:46,048 INFO L175 Difference]: Start difference. First operand has 406 places, 1160 transitions, 19603 flow. Second operand 10 states and 201 transitions. [2024-06-28 02:56:46,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1202 transitions, 22372 flow [2024-06-28 02:56:50,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 1202 transitions, 22144 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-28 02:56:50,687 INFO L231 Difference]: Finished difference. Result has 412 places, 1164 transitions, 20247 flow [2024-06-28 02:56:50,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=19403, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=809, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20247, PETRI_PLACES=412, PETRI_TRANSITIONS=1164} [2024-06-28 02:56:50,687 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 367 predicate places. [2024-06-28 02:56:50,687 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 1164 transitions, 20247 flow [2024-06-28 02:56:50,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:50,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:50,688 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 02:56:50,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:56:50,688 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:50,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:50,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1380846297, now seen corresponding path program 3 times [2024-06-28 02:56:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:50,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437163874] [2024-06-28 02:56:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:50,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:51,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:51,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437163874] [2024-06-28 02:56:51,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437163874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:51,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:51,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:56:51,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537012562] [2024-06-28 02:56:51,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:51,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:56:51,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:51,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:56:51,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:56:51,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:56:51,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 1164 transitions, 20247 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:51,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:51,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:56:51,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:54,516 INFO L124 PetriNetUnfolderBase]: 6921/11124 cut-off events. [2024-06-28 02:56:54,516 INFO L125 PetriNetUnfolderBase]: For 1103821/1103830 co-relation queries the response was YES. [2024-06-28 02:56:54,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93147 conditions, 11124 events. 6921/11124 cut-off events. For 1103821/1103830 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 76455 event pairs, 1422 based on Foata normal form. 12/11133 useless extension candidates. Maximal degree in co-relation 92982. Up to 8843 conditions per place. [2024-06-28 02:56:54,742 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 879 selfloop transitions, 342 changer transitions 0/1226 dead transitions. [2024-06-28 02:56:54,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1226 transitions, 23813 flow [2024-06-28 02:56:54,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:56:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:56:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-06-28 02:56:54,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136363636363636 [2024-06-28 02:56:54,743 INFO L175 Difference]: Start difference. First operand has 412 places, 1164 transitions, 20247 flow. Second operand 10 states and 203 transitions. [2024-06-28 02:56:54,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1226 transitions, 23813 flow [2024-06-28 02:56:58,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 1226 transitions, 23124 flow, removed 111 selfloop flow, removed 8 redundant places. [2024-06-28 02:56:58,306 INFO L231 Difference]: Finished difference. Result has 416 places, 1183 transitions, 20781 flow [2024-06-28 02:56:58,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=19662, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=836, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20781, PETRI_PLACES=416, PETRI_TRANSITIONS=1183} [2024-06-28 02:56:58,308 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 371 predicate places. [2024-06-28 02:56:58,308 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 1183 transitions, 20781 flow [2024-06-28 02:56:58,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:58,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:58,308 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 02:56:58,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:56:58,308 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:56:58,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:58,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2048044199, now seen corresponding path program 4 times [2024-06-28 02:56:58,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:58,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094634555] [2024-06-28 02:56:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:58,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:59,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:59,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094634555] [2024-06-28 02:56:59,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094634555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:59,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:59,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:56:59,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991450764] [2024-06-28 02:56:59,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:59,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:56:59,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:59,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:56:59,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:56:59,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:56:59,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 1183 transitions, 20781 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:56:59,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:59,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:56:59,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:02,688 INFO L124 PetriNetUnfolderBase]: 7079/11369 cut-off events. [2024-06-28 02:57:02,688 INFO L125 PetriNetUnfolderBase]: For 1177175/1177183 co-relation queries the response was YES. [2024-06-28 02:57:02,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96272 conditions, 11369 events. 7079/11369 cut-off events. For 1177175/1177183 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 78378 event pairs, 1919 based on Foata normal form. 14/11381 useless extension candidates. Maximal degree in co-relation 96106. Up to 9944 conditions per place. [2024-06-28 02:57:02,899 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 1120 selfloop transitions, 128 changer transitions 0/1253 dead transitions. [2024-06-28 02:57:02,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 1253 transitions, 24385 flow [2024-06-28 02:57:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:02,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 234 transitions. [2024-06-28 02:57:02,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 02:57:02,901 INFO L175 Difference]: Start difference. First operand has 416 places, 1183 transitions, 20781 flow. Second operand 12 states and 234 transitions. [2024-06-28 02:57:02,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 1253 transitions, 24385 flow [2024-06-28 02:57:07,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1253 transitions, 23670 flow, removed 184 selfloop flow, removed 6 redundant places. [2024-06-28 02:57:07,563 INFO L231 Difference]: Finished difference. Result has 423 places, 1205 transitions, 20990 flow [2024-06-28 02:57:07,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=20282, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1059, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=20990, PETRI_PLACES=423, PETRI_TRANSITIONS=1205} [2024-06-28 02:57:07,565 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 378 predicate places. [2024-06-28 02:57:07,565 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 1205 transitions, 20990 flow [2024-06-28 02:57:07,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:57:07,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:07,565 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 02:57:07,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:57:07,565 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:07,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:07,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2039835425, now seen corresponding path program 5 times [2024-06-28 02:57:07,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:07,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689866814] [2024-06-28 02:57:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:07,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:08,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:08,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:08,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689866814] [2024-06-28 02:57:08,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689866814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:08,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:08,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:08,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458395519] [2024-06-28 02:57:08,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:08,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:08,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:08,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:08,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:08,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:57:08,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 1205 transitions, 20990 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:57:08,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:08,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:57:08,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:12,242 INFO L124 PetriNetUnfolderBase]: 7061/11347 cut-off events. [2024-06-28 02:57:12,243 INFO L125 PetriNetUnfolderBase]: For 1163993/1164001 co-relation queries the response was YES. [2024-06-28 02:57:12,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94986 conditions, 11347 events. 7061/11347 cut-off events. For 1163993/1164001 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 78270 event pairs, 1948 based on Foata normal form. 16/11361 useless extension candidates. Maximal degree in co-relation 94818. Up to 10031 conditions per place. [2024-06-28 02:57:12,425 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 1126 selfloop transitions, 114 changer transitions 0/1245 dead transitions. [2024-06-28 02:57:12,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 1245 transitions, 23662 flow [2024-06-28 02:57:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:57:12,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:57:12,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-28 02:57:12,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44008264462809915 [2024-06-28 02:57:12,426 INFO L175 Difference]: Start difference. First operand has 423 places, 1205 transitions, 20990 flow. Second operand 11 states and 213 transitions. [2024-06-28 02:57:12,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 1245 transitions, 23662 flow [2024-06-28 02:57:17,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 1245 transitions, 23347 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:17,025 INFO L231 Difference]: Finished difference. Result has 426 places, 1205 transitions, 20920 flow [2024-06-28 02:57:17,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=20675, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1091, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20920, PETRI_PLACES=426, PETRI_TRANSITIONS=1205} [2024-06-28 02:57:17,025 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 381 predicate places. [2024-06-28 02:57:17,025 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 1205 transitions, 20920 flow [2024-06-28 02:57:17,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:57:17,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:17,025 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 02:57:17,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:57:17,026 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:17,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1669808209, now seen corresponding path program 1 times [2024-06-28 02:57:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:17,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263568361] [2024-06-28 02:57:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:17,929 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 02:57:17,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263568361] [2024-06-28 02:57:17,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263568361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:17,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:17,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:57:17,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667051843] [2024-06-28 02:57:17,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:17,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:57:17,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:17,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:57:17,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:57:18,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:57:18,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 1205 transitions, 20920 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:18,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:18,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:57:18,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:20,437 INFO L124 PetriNetUnfolderBase]: 5922/9659 cut-off events. [2024-06-28 02:57:20,437 INFO L125 PetriNetUnfolderBase]: For 1353221/1353488 co-relation queries the response was YES. [2024-06-28 02:57:20,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85535 conditions, 9659 events. 5922/9659 cut-off events. For 1353221/1353488 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 66720 event pairs, 1358 based on Foata normal form. 129/9517 useless extension candidates. Maximal degree in co-relation 85365. Up to 7877 conditions per place. [2024-06-28 02:57:20,613 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 979 selfloop transitions, 91 changer transitions 0/1237 dead transitions. [2024-06-28 02:57:20,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 1237 transitions, 23290 flow [2024-06-28 02:57:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:57:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:57:20,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 02:57:20,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 02:57:20,614 INFO L175 Difference]: Start difference. First operand has 426 places, 1205 transitions, 20920 flow. Second operand 9 states and 188 transitions. [2024-06-28 02:57:20,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 1237 transitions, 23290 flow [2024-06-28 02:57:25,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 1237 transitions, 23104 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 02:57:25,184 INFO L231 Difference]: Finished difference. Result has 427 places, 1208 transitions, 21009 flow [2024-06-28 02:57:25,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=20734, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21009, PETRI_PLACES=427, PETRI_TRANSITIONS=1208} [2024-06-28 02:57:25,185 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 382 predicate places. [2024-06-28 02:57:25,185 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 1208 transitions, 21009 flow [2024-06-28 02:57:25,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:25,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:25,185 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 02:57:25,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:57:25,185 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:25,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1903548459, now seen corresponding path program 6 times [2024-06-28 02:57:25,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:25,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029060387] [2024-06-28 02:57:25,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:25,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:26,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:26,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029060387] [2024-06-28 02:57:26,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029060387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:26,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:26,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:26,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170336040] [2024-06-28 02:57:26,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:26,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:26,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:26,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:57:26,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 1208 transitions, 21009 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:57:26,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:26,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:57:26,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:29,641 INFO L124 PetriNetUnfolderBase]: 7132/11456 cut-off events. [2024-06-28 02:57:29,642 INFO L125 PetriNetUnfolderBase]: For 1211105/1211111 co-relation queries the response was YES. [2024-06-28 02:57:29,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96631 conditions, 11456 events. 7132/11456 cut-off events. For 1211105/1211111 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 79149 event pairs, 1971 based on Foata normal form. 14/11468 useless extension candidates. Maximal degree in co-relation 96460. Up to 10133 conditions per place. [2024-06-28 02:57:29,868 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 1138 selfloop transitions, 113 changer transitions 0/1256 dead transitions. [2024-06-28 02:57:29,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1256 transitions, 23907 flow [2024-06-28 02:57:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:57:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:57:29,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-28 02:57:29,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44008264462809915 [2024-06-28 02:57:29,869 INFO L175 Difference]: Start difference. First operand has 427 places, 1208 transitions, 21009 flow. Second operand 11 states and 213 transitions. [2024-06-28 02:57:29,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 1256 transitions, 23907 flow [2024-06-28 02:57:34,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 1256 transitions, 23672 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:34,676 INFO L231 Difference]: Finished difference. Result has 431 places, 1218 transitions, 21267 flow [2024-06-28 02:57:34,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=20774, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1095, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21267, PETRI_PLACES=431, PETRI_TRANSITIONS=1218} [2024-06-28 02:57:34,676 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 386 predicate places. [2024-06-28 02:57:34,676 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 1218 transitions, 21267 flow [2024-06-28 02:57:34,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:57:34,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:34,677 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 02:57:34,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:57:34,677 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:34,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:34,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1114300297, now seen corresponding path program 7 times [2024-06-28 02:57:34,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:34,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195903906] [2024-06-28 02:57:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:34,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:35,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:35,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:35,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195903906] [2024-06-28 02:57:35,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195903906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:35,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:35,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:35,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277675682] [2024-06-28 02:57:35,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:35,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:35,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:35,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:57:35,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 1218 transitions, 21267 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:57:35,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:35,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:57:35,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:39,486 INFO L124 PetriNetUnfolderBase]: 7244/11634 cut-off events. [2024-06-28 02:57:39,486 INFO L125 PetriNetUnfolderBase]: For 1231964/1231970 co-relation queries the response was YES. [2024-06-28 02:57:39,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98117 conditions, 11634 events. 7244/11634 cut-off events. For 1231964/1231970 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 80625 event pairs, 1969 based on Foata normal form. 12/11644 useless extension candidates. Maximal degree in co-relation 97945. Up to 10188 conditions per place. [2024-06-28 02:57:39,705 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 1144 selfloop transitions, 131 changer transitions 0/1280 dead transitions. [2024-06-28 02:57:39,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 1280 transitions, 24279 flow [2024-06-28 02:57:39,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:39,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 232 transitions. [2024-06-28 02:57:39,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 02:57:39,706 INFO L175 Difference]: Start difference. First operand has 431 places, 1218 transitions, 21267 flow. Second operand 12 states and 232 transitions. [2024-06-28 02:57:39,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 1280 transitions, 24279 flow [2024-06-28 02:57:45,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 1280 transitions, 23999 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-28 02:57:45,079 INFO L231 Difference]: Finished difference. Result has 437 places, 1236 transitions, 21604 flow [2024-06-28 02:57:45,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=20987, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1087, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=21604, PETRI_PLACES=437, PETRI_TRANSITIONS=1236} [2024-06-28 02:57:45,080 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 392 predicate places. [2024-06-28 02:57:45,080 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 1236 transitions, 21604 flow [2024-06-28 02:57:45,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:57:45,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:45,080 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 02:57:45,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:57:45,080 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:45,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:45,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1786804133, now seen corresponding path program 8 times [2024-06-28 02:57:45,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:45,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611113766] [2024-06-28 02:57:45,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:45,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:46,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:46,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611113766] [2024-06-28 02:57:46,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611113766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:46,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:46,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:46,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525383665] [2024-06-28 02:57:46,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:46,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:46,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:46,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:46,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:46,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:57:46,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1236 transitions, 21604 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:57:46,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:46,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:57:46,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:50,606 INFO L124 PetriNetUnfolderBase]: 7294/11720 cut-off events. [2024-06-28 02:57:50,606 INFO L125 PetriNetUnfolderBase]: For 1258054/1258063 co-relation queries the response was YES. [2024-06-28 02:57:50,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99286 conditions, 11720 events. 7294/11720 cut-off events. For 1258054/1258063 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 81383 event pairs, 1600 based on Foata normal form. 16/11733 useless extension candidates. Maximal degree in co-relation 99112. Up to 9836 conditions per place. [2024-06-28 02:57:50,814 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 949 selfloop transitions, 354 changer transitions 0/1308 dead transitions. [2024-06-28 02:57:50,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1308 transitions, 25053 flow [2024-06-28 02:57:50,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:57:50,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:57:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 02:57:50,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524793388429752 [2024-06-28 02:57:50,815 INFO L175 Difference]: Start difference. First operand has 437 places, 1236 transitions, 21604 flow. Second operand 11 states and 219 transitions. [2024-06-28 02:57:50,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 1308 transitions, 25053 flow [2024-06-28 02:57:55,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 1308 transitions, 24744 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-28 02:57:55,588 INFO L231 Difference]: Finished difference. Result has 440 places, 1264 transitions, 22701 flow [2024-06-28 02:57:55,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=21295, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=901, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22701, PETRI_PLACES=440, PETRI_TRANSITIONS=1264} [2024-06-28 02:57:55,588 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 395 predicate places. [2024-06-28 02:57:55,588 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 1264 transitions, 22701 flow [2024-06-28 02:57:55,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:57:55,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:55,589 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 02:57:55,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:57:55,589 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:57:55,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:55,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1369238459, now seen corresponding path program 9 times [2024-06-28 02:57:55,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:55,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613569656] [2024-06-28 02:57:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:55,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:56,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:56,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613569656] [2024-06-28 02:57:56,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613569656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:56,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:56,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:57:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244183779] [2024-06-28 02:57:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:56,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:57:56,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:57:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:57:56,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:57:56,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 1264 transitions, 22701 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:57:56,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:56,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:57:56,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:01,088 INFO L124 PetriNetUnfolderBase]: 7333/11769 cut-off events. [2024-06-28 02:58:01,088 INFO L125 PetriNetUnfolderBase]: For 1289933/1289940 co-relation queries the response was YES. [2024-06-28 02:58:01,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101078 conditions, 11769 events. 7333/11769 cut-off events. For 1289933/1289940 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 81459 event pairs, 1595 based on Foata normal form. 14/11780 useless extension candidates. Maximal degree in co-relation 100902. Up to 9907 conditions per place. [2024-06-28 02:58:01,301 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 956 selfloop transitions, 353 changer transitions 0/1314 dead transitions. [2024-06-28 02:58:01,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 1314 transitions, 25817 flow [2024-06-28 02:58:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:01,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-28 02:58:01,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44834710743801653 [2024-06-28 02:58:01,302 INFO L175 Difference]: Start difference. First operand has 440 places, 1264 transitions, 22701 flow. Second operand 11 states and 217 transitions. [2024-06-28 02:58:01,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 1314 transitions, 25817 flow [2024-06-28 02:58:06,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 1314 transitions, 25042 flow, removed 134 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:06,587 INFO L231 Difference]: Finished difference. Result has 442 places, 1270 transitions, 22866 flow [2024-06-28 02:58:06,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=21926, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=911, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22866, PETRI_PLACES=442, PETRI_TRANSITIONS=1270} [2024-06-28 02:58:06,589 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 397 predicate places. [2024-06-28 02:58:06,589 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 1270 transitions, 22866 flow [2024-06-28 02:58:06,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:58:06,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:06,589 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 02:58:06,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:58:06,589 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:06,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1113732493, now seen corresponding path program 1 times [2024-06-28 02:58:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:06,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639378032] [2024-06-28 02:58:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:06,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:07,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:07,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639378032] [2024-06-28 02:58:07,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639378032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:07,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:07,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:07,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535935642] [2024-06-28 02:58:07,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:07,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:07,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:07,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:07,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:07,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:58:07,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 1270 transitions, 22866 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:58:07,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:07,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:58:07,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:12,031 INFO L124 PetriNetUnfolderBase]: 7350/11794 cut-off events. [2024-06-28 02:58:12,031 INFO L125 PetriNetUnfolderBase]: For 1313490/1313499 co-relation queries the response was YES. [2024-06-28 02:58:12,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100909 conditions, 11794 events. 7350/11794 cut-off events. For 1313490/1313499 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 81970 event pairs, 1640 based on Foata normal form. 10/11801 useless extension candidates. Maximal degree in co-relation 100735. Up to 10058 conditions per place. [2024-06-28 02:58:12,239 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 1110 selfloop transitions, 203 changer transitions 0/1318 dead transitions. [2024-06-28 02:58:12,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1318 transitions, 25895 flow [2024-06-28 02:58:12,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:58:12,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:58:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 02:58:12,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524793388429752 [2024-06-28 02:58:12,240 INFO L175 Difference]: Start difference. First operand has 442 places, 1270 transitions, 22866 flow. Second operand 11 states and 219 transitions. [2024-06-28 02:58:12,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1318 transitions, 25895 flow [2024-06-28 02:58:17,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 1318 transitions, 24954 flow, removed 96 selfloop flow, removed 10 redundant places. [2024-06-28 02:58:17,518 INFO L231 Difference]: Finished difference. Result has 444 places, 1277 transitions, 22505 flow [2024-06-28 02:58:17,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=21929, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1071, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22505, PETRI_PLACES=444, PETRI_TRANSITIONS=1277} [2024-06-28 02:58:17,519 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 399 predicate places. [2024-06-28 02:58:17,519 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 1277 transitions, 22505 flow [2024-06-28 02:58:17,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:58:17,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:17,519 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 02:58:17,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:58:17,519 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:17,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash -578890337, now seen corresponding path program 2 times [2024-06-28 02:58:17,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:17,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954209776] [2024-06-28 02:58:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:17,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:18,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:18,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954209776] [2024-06-28 02:58:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954209776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666870604] [2024-06-28 02:58:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:18,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:18,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:18,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:18,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:18,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:58:18,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1277 transitions, 22505 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:18,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:18,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:58:18,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:21,949 INFO L124 PetriNetUnfolderBase]: 6163/10103 cut-off events. [2024-06-28 02:58:21,949 INFO L125 PetriNetUnfolderBase]: For 1526560/1526823 co-relation queries the response was YES. [2024-06-28 02:58:22,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90946 conditions, 10103 events. 6163/10103 cut-off events. For 1526560/1526823 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 71211 event pairs, 1445 based on Foata normal form. 130/9961 useless extension candidates. Maximal degree in co-relation 90772. Up to 8222 conditions per place. [2024-06-28 02:58:22,134 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 1016 selfloop transitions, 91 changer transitions 0/1310 dead transitions. [2024-06-28 02:58:22,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1310 transitions, 24943 flow [2024-06-28 02:58:22,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:22,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 02:58:22,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 02:58:22,135 INFO L175 Difference]: Start difference. First operand has 444 places, 1277 transitions, 22505 flow. Second operand 9 states and 188 transitions. [2024-06-28 02:58:22,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1310 transitions, 24943 flow [2024-06-28 02:58:27,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1310 transitions, 23742 flow, removed 64 selfloop flow, removed 9 redundant places. [2024-06-28 02:58:27,135 INFO L231 Difference]: Finished difference. Result has 444 places, 1283 transitions, 21603 flow [2024-06-28 02:58:27,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=21304, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21603, PETRI_PLACES=444, PETRI_TRANSITIONS=1283} [2024-06-28 02:58:27,135 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 399 predicate places. [2024-06-28 02:58:27,136 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 1283 transitions, 21603 flow [2024-06-28 02:58:27,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:27,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:27,136 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 02:58:27,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:58:27,136 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:27,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash -566913797, now seen corresponding path program 3 times [2024-06-28 02:58:27,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:27,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135792897] [2024-06-28 02:58:27,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:28,292 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 02:58:28,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:28,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135792897] [2024-06-28 02:58:28,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135792897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:28,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:28,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:58:28,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977855303] [2024-06-28 02:58:28,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:28,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:58:28,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:58:28,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:58:28,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:58:28,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1283 transitions, 21603 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:28,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:28,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:58:28,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:31,347 INFO L124 PetriNetUnfolderBase]: 6176/10104 cut-off events. [2024-06-28 02:58:31,347 INFO L125 PetriNetUnfolderBase]: For 1544100/1544354 co-relation queries the response was YES. [2024-06-28 02:58:31,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89359 conditions, 10104 events. 6176/10104 cut-off events. For 1544100/1544354 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 70963 event pairs, 1419 based on Foata normal form. 127/9954 useless extension candidates. Maximal degree in co-relation 89186. Up to 8205 conditions per place. [2024-06-28 02:58:31,734 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 1004 selfloop transitions, 103 changer transitions 0/1310 dead transitions. [2024-06-28 02:58:31,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1310 transitions, 24025 flow [2024-06-28 02:58:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:31,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 02:58:31,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-28 02:58:31,735 INFO L175 Difference]: Start difference. First operand has 444 places, 1283 transitions, 21603 flow. Second operand 9 states and 185 transitions. [2024-06-28 02:58:31,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1310 transitions, 24025 flow [2024-06-28 02:58:36,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 1310 transitions, 23735 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 02:58:36,620 INFO L231 Difference]: Finished difference. Result has 445 places, 1286 transitions, 21629 flow [2024-06-28 02:58:36,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=21325, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21629, PETRI_PLACES=445, PETRI_TRANSITIONS=1286} [2024-06-28 02:58:36,621 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 400 predicate places. [2024-06-28 02:58:36,621 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 1286 transitions, 21629 flow [2024-06-28 02:58:36,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:36,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:36,621 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 02:58:36,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:58:36,622 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:36,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:36,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1363651139, now seen corresponding path program 1 times [2024-06-28 02:58:36,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:36,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050348248] [2024-06-28 02:58:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:36,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:37,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:37,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050348248] [2024-06-28 02:58:37,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050348248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:37,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:37,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:58:37,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289958982] [2024-06-28 02:58:37,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:37,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:58:37,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:37,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:58:37,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:58:37,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 44 [2024-06-28 02:58:37,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 1286 transitions, 21629 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:37,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:37,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 44 [2024-06-28 02:58:37,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:58:40,976 INFO L124 PetriNetUnfolderBase]: 6171/10140 cut-off events. [2024-06-28 02:58:40,976 INFO L125 PetriNetUnfolderBase]: For 1529718/1529939 co-relation queries the response was YES. [2024-06-28 02:58:41,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90090 conditions, 10140 events. 6171/10140 cut-off events. For 1529718/1529939 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 71707 event pairs, 1472 based on Foata normal form. 111/10018 useless extension candidates. Maximal degree in co-relation 89916. Up to 8312 conditions per place. [2024-06-28 02:58:41,154 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 1062 selfloop transitions, 48 changer transitions 0/1313 dead transitions. [2024-06-28 02:58:41,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 1313 transitions, 24027 flow [2024-06-28 02:58:41,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:58:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:58:41,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 02:58:41,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 02:58:41,155 INFO L175 Difference]: Start difference. First operand has 445 places, 1286 transitions, 21629 flow. Second operand 9 states and 182 transitions. [2024-06-28 02:58:41,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 1313 transitions, 24027 flow [2024-06-28 02:58:46,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1313 transitions, 23749 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 02:58:46,281 INFO L231 Difference]: Finished difference. Result has 447 places, 1289 transitions, 21527 flow [2024-06-28 02:58:46,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=21351, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21527, PETRI_PLACES=447, PETRI_TRANSITIONS=1289} [2024-06-28 02:58:46,282 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 402 predicate places. [2024-06-28 02:58:46,282 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 1289 transitions, 21527 flow [2024-06-28 02:58:46,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:58:46,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:58:46,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:58:46,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:58:46,282 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:58:46,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:58:46,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1530938767, now seen corresponding path program 10 times [2024-06-28 02:58:46,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:58:46,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178557835] [2024-06-28 02:58:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:58:46,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:58:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:58:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:58:47,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:58:47,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178557835] [2024-06-28 02:58:47,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178557835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:58:47,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:58:47,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:58:47,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650573271] [2024-06-28 02:58:47,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:58:47,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:58:47,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:58:47,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:58:47,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:58:47,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 02:58:47,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1289 transitions, 21527 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 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 02:58:47,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:58:47,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 02:58:47,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand