./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix016.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix016.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix016.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix016.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:25:32,112 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:25:32,177 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:25:32,180 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:25:32,181 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:25:32,233 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:25:32,234 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:25:32,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:25:32,235 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:25:32,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:25:32,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:25:32,237 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:25:32,238 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:25:32,238 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:25:32,239 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:25:32,239 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:25:32,240 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:25:32,244 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:25:32,245 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:25:32,245 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:25:32,245 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:25:32,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:25:32,246 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:25:32,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:25:32,247 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:25:32,247 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:25:32,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:25:32,252 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:25:32,252 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:25:32,253 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:25:32,254 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:25:32,254 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:25:32,254 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:25:32,255 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:25:32,255 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:25:32,255 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:25:32,255 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:25:32,255 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:25:32,256 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:25:32,256 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:25:32,256 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:25:32,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:25:32,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:25:32,257 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:25:32,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:25:32,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:25:32,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:25:32,527 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:25:32,528 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:25:32,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix016.oepc.i [2024-06-28 01:25:33,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:25:34,103 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:25:34,104 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016.oepc.i [2024-06-28 01:25:34,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62b62b0c/1a6dca8b1dc04da0af00cb2f0494df5b/FLAG5d1ab388c [2024-06-28 01:25:34,130 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62b62b0c/1a6dca8b1dc04da0af00cb2f0494df5b [2024-06-28 01:25:34,132 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:25:34,133 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:25:34,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix016.oepc.yml/witness.yml [2024-06-28 01:25:34,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:25:34,319 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:25:34,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:25:34,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:25:34,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:25:34,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:25:34" (1/2) ... [2024-06-28 01:25:34,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab6bd90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:34, skipping insertion in model container [2024-06-28 01:25:34,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:25:34" (1/2) ... [2024-06-28 01:25:34,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@698244c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:25:34, skipping insertion in model container [2024-06-28 01:25:34,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:25:34" (2/2) ... [2024-06-28 01:25:34,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ab6bd90 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:34, skipping insertion in model container [2024-06-28 01:25:34,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:25:34" (2/2) ... [2024-06-28 01:25:34,333 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:25:34,428 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:25:34,430 INFO L97 edCorrectnessWitness]: Location invariant before [L845-L845] (((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 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 || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-06-28 01:25:34,430 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] (((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-06-28 01:25:34,430 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 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 || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0) [2024-06-28 01:25:34,431 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:25:34,431 INFO L106 edCorrectnessWitness]: ghost_update [L841-L841] multithreaded = 1; [2024-06-28 01:25:34,477 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:25:34,635 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016.oepc.i[945,958] [2024-06-28 01:25:34,813 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:25:34,823 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:25:34,873 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:25:34,998 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:25:35,036 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:25:35,038 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35 WrapperNode [2024-06-28 01:25:35,038 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:25:35,039 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:25:35,040 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:25:35,040 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:25:35,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,081 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,125 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 123 [2024-06-28 01:25:35,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:25:35,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:25:35,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:25:35,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:25:35,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,146 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,165 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 01:25:35,166 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,204 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:25:35,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:25:35,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:25:35,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:25:35,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (1/1) ... [2024-06-28 01:25:35,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:25:35,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:25:35,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:25:35,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:25:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:25:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:25:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:25:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:25:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:25:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:25:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:25:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:25:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:25:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:25:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:25:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:25:35,308 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:25:35,501 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:25:35,503 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:25:35,838 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:25:35,839 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:25:36,001 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:25:36,001 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:25:36,002 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:25:36 BoogieIcfgContainer [2024-06-28 01:25:36,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:25:36,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:25:36,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:25:36,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:25:36,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:25:34" (1/4) ... [2024-06-28 01:25:36,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c76f55e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:25:36, skipping insertion in model container [2024-06-28 01:25:36,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:25:34" (2/4) ... [2024-06-28 01:25:36,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c76f55e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:25:36, skipping insertion in model container [2024-06-28 01:25:36,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:25:35" (3/4) ... [2024-06-28 01:25:36,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c76f55e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:25:36, skipping insertion in model container [2024-06-28 01:25:36,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:25:36" (4/4) ... [2024-06-28 01:25:36,013 INFO L112 eAbstractionObserver]: Analyzing ICFG mix016.oepc.i [2024-06-28 01:25:36,030 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:25:36,030 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:25:36,030 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:25:36,082 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:25:36,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:25:36,150 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:25:36,150 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:25:36,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:25:36,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:25:36,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-28 01:25:36,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:25:36,174 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;@7630d2af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:25:36,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:25:36,182 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:25:36,182 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:25:36,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:25:36,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:36,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:25:36,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:36,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash 358158408, now seen corresponding path program 1 times [2024-06-28 01:25:36,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:36,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971249842] [2024-06-28 01:25:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:36,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:37,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:37,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971249842] [2024-06-28 01:25:37,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971249842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:37,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:37,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:25:37,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200173992] [2024-06-28 01:25:37,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:37,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:25:37,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:37,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:25:37,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:25:37,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-28 01:25:37,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 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 01:25:37,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:37,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-28 01:25:37,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:38,207 INFO L124 PetriNetUnfolderBase]: 3136/5236 cut-off events. [2024-06-28 01:25:38,208 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-28 01:25:38,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9853 conditions, 5236 events. 3136/5236 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 33659 event pairs, 2366 based on Foata normal form. 151/4923 useless extension candidates. Maximal degree in co-relation 9841. Up to 4526 conditions per place. [2024-06-28 01:25:38,248 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 40 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:25:38,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 221 flow [2024-06-28 01:25:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:25:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:25:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-28 01:25:38,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6950354609929078 [2024-06-28 01:25:38,261 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 98 transitions. [2024-06-28 01:25:38,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 221 flow [2024-06-28 01:25:38,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:25:38,270 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-28 01:25:38,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 01:25:38,275 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:25:38,275 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-28 01:25:38,275 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 01:25:38,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:38,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:25:38,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:25:38,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:38,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash 358159564, now seen corresponding path program 1 times [2024-06-28 01:25:38,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001222995] [2024-06-28 01:25:38,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:38,365 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 01:25:38,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:38,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001222995] [2024-06-28 01:25:38,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001222995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:38,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:38,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:25:38,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874465569] [2024-06-28 01:25:38,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:38,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:25:38,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:38,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:25:38,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:25:38,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-06-28 01:25:38,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:38,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:38,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-06-28 01:25:38,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:38,628 INFO L124 PetriNetUnfolderBase]: 950/1800 cut-off events. [2024-06-28 01:25:38,628 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:25:38,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 1800 events. 950/1800 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11902 event pairs, 463 based on Foata normal form. 0/1695 useless extension candidates. Maximal degree in co-relation 3490. Up to 1207 conditions per place. [2024-06-28 01:25:38,642 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 35 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-06-28 01:25:38,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 232 flow [2024-06-28 01:25:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:25:38,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:25:38,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-06-28 01:25:38,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7801418439716312 [2024-06-28 01:25:38,645 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 3 states and 110 transitions. [2024-06-28 01:25:38,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 232 flow [2024-06-28 01:25:38,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:25:38,649 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 122 flow [2024-06-28 01:25:38,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 01:25:38,651 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:25:38,651 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 122 flow [2024-06-28 01:25:38,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:38,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:38,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:38,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:25:38,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:38,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:38,662 INFO L85 PathProgramCache]: Analyzing trace with hash 592895110, now seen corresponding path program 1 times [2024-06-28 01:25:38,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:38,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032022686] [2024-06-28 01:25:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:38,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:39,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:39,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032022686] [2024-06-28 01:25:39,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032022686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:39,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:39,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:25:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714204976] [2024-06-28 01:25:39,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:39,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:25:39,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:25:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:25:39,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-28 01:25:39,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:39,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:39,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-28 01:25:39,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:39,881 INFO L124 PetriNetUnfolderBase]: 2578/4273 cut-off events. [2024-06-28 01:25:39,881 INFO L125 PetriNetUnfolderBase]: For 1094/1094 co-relation queries the response was YES. [2024-06-28 01:25:39,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9128 conditions, 4273 events. 2578/4273 cut-off events. For 1094/1094 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 26210 event pairs, 1575 based on Foata normal form. 3/4105 useless extension candidates. Maximal degree in co-relation 9115. Up to 3717 conditions per place. [2024-06-28 01:25:39,905 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 48 selfloop transitions, 8 changer transitions 2/71 dead transitions. [2024-06-28 01:25:39,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 310 flow [2024-06-28 01:25:39,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:25:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:25:39,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-28 01:25:39,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.648936170212766 [2024-06-28 01:25:39,910 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 122 flow. Second operand 4 states and 122 transitions. [2024-06-28 01:25:39,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 310 flow [2024-06-28 01:25:39,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:25:39,914 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 183 flow [2024-06-28 01:25:39,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 01:25:39,916 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-28 01:25:39,916 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 183 flow [2024-06-28 01:25:39,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:39,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:39,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:39,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:25:39,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:39,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:39,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1458398011, now seen corresponding path program 1 times [2024-06-28 01:25:39,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:39,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514555447] [2024-06-28 01:25:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:39,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:40,987 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 01:25:40,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:40,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514555447] [2024-06-28 01:25:40,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514555447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:40,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:40,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:25:40,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077805345] [2024-06-28 01:25:40,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:40,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:25:40,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:40,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:25:40,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:25:41,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-28 01:25:41,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:41,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:41,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-28 01:25:41,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:41,744 INFO L124 PetriNetUnfolderBase]: 2687/4170 cut-off events. [2024-06-28 01:25:41,744 INFO L125 PetriNetUnfolderBase]: For 1946/1946 co-relation queries the response was YES. [2024-06-28 01:25:41,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10047 conditions, 4170 events. 2687/4170 cut-off events. For 1946/1946 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23916 event pairs, 1060 based on Foata normal form. 3/4117 useless extension candidates. Maximal degree in co-relation 10032. Up to 3824 conditions per place. [2024-06-28 01:25:41,771 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 68 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-28 01:25:41,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 519 flow [2024-06-28 01:25:41,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:25:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:25:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-06-28 01:25:41,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-06-28 01:25:41,773 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 183 flow. Second operand 6 states and 174 transitions. [2024-06-28 01:25:41,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 519 flow [2024-06-28 01:25:41,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 502 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:25:41,776 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 301 flow [2024-06-28 01:25:41,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-28 01:25:41,777 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-06-28 01:25:41,777 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 301 flow [2024-06-28 01:25:41,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:41,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:41,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:41,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:25:41,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:41,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:41,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2034303590, now seen corresponding path program 1 times [2024-06-28 01:25:41,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:41,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97617390] [2024-06-28 01:25:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:41,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:42,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:42,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97617390] [2024-06-28 01:25:42,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97617390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:42,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:42,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:25:42,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24047065] [2024-06-28 01:25:42,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:42,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:25:42,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:25:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:25:43,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-28 01:25:43,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 301 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:43,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:43,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-28 01:25:43,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:43,786 INFO L124 PetriNetUnfolderBase]: 2678/4157 cut-off events. [2024-06-28 01:25:43,787 INFO L125 PetriNetUnfolderBase]: For 4056/4056 co-relation queries the response was YES. [2024-06-28 01:25:43,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11236 conditions, 4157 events. 2678/4157 cut-off events. For 4056/4056 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23910 event pairs, 774 based on Foata normal form. 6/4106 useless extension candidates. Maximal degree in co-relation 11217. Up to 3767 conditions per place. [2024-06-28 01:25:43,881 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 75 selfloop transitions, 23 changer transitions 0/110 dead transitions. [2024-06-28 01:25:43,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 110 transitions, 625 flow [2024-06-28 01:25:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:43,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-28 01:25:43,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601823708206687 [2024-06-28 01:25:43,884 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 301 flow. Second operand 7 states and 198 transitions. [2024-06-28 01:25:43,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 110 transitions, 625 flow [2024-06-28 01:25:43,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 110 transitions, 602 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:25:43,890 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 343 flow [2024-06-28 01:25:43,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-28 01:25:43,891 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-28 01:25:43,891 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 343 flow [2024-06-28 01:25:43,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:43,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:43,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:43,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:25:43,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:43,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:43,893 INFO L85 PathProgramCache]: Analyzing trace with hash 963647835, now seen corresponding path program 1 times [2024-06-28 01:25:43,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:43,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890405148] [2024-06-28 01:25:43,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:43,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:44,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:44,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890405148] [2024-06-28 01:25:44,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890405148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:44,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:44,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:25:44,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923892039] [2024-06-28 01:25:44,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:44,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:25:44,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:44,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:25:44,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:25:44,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:25:44,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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 01:25:44,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:44,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:25:44,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:45,445 INFO L124 PetriNetUnfolderBase]: 3112/5288 cut-off events. [2024-06-28 01:25:45,445 INFO L125 PetriNetUnfolderBase]: For 6693/6693 co-relation queries the response was YES. [2024-06-28 01:25:45,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14026 conditions, 5288 events. 3112/5288 cut-off events. For 6693/6693 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 33818 event pairs, 1299 based on Foata normal form. 4/5140 useless extension candidates. Maximal degree in co-relation 14004. Up to 4453 conditions per place. [2024-06-28 01:25:45,476 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 64 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2024-06-28 01:25:45,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 555 flow [2024-06-28 01:25:45,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:25:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:25:45,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 01:25:45,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-28 01:25:45,477 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 343 flow. Second operand 5 states and 123 transitions. [2024-06-28 01:25:45,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 555 flow [2024-06-28 01:25:45,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 500 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:25:45,483 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 341 flow [2024-06-28 01:25:45,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-28 01:25:45,484 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-28 01:25:45,484 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 341 flow [2024-06-28 01:25:45,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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 01:25:45,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:45,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:45,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:25:45,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:45,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:45,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1159839837, now seen corresponding path program 1 times [2024-06-28 01:25:45,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:45,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483859797] [2024-06-28 01:25:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:45,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:46,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:46,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483859797] [2024-06-28 01:25:46,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483859797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:46,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:46,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:25:46,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274048280] [2024-06-28 01:25:46,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:46,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:25:46,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:46,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:25:46,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:25:46,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:25:46,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:46,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:46,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:25:46,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:47,268 INFO L124 PetriNetUnfolderBase]: 3191/5305 cut-off events. [2024-06-28 01:25:47,269 INFO L125 PetriNetUnfolderBase]: For 8637/8637 co-relation queries the response was YES. [2024-06-28 01:25:47,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15017 conditions, 5305 events. 3191/5305 cut-off events. For 8637/8637 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 32968 event pairs, 1084 based on Foata normal form. 4/5154 useless extension candidates. Maximal degree in co-relation 14993. Up to 4493 conditions per place. [2024-06-28 01:25:47,316 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 81 selfloop transitions, 18 changer transitions 0/109 dead transitions. [2024-06-28 01:25:47,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 109 transitions, 709 flow [2024-06-28 01:25:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:25:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:25:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 01:25:47,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-28 01:25:47,318 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 341 flow. Second operand 6 states and 154 transitions. [2024-06-28 01:25:47,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 109 transitions, 709 flow [2024-06-28 01:25:47,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 109 transitions, 670 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:25:47,325 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 450 flow [2024-06-28 01:25:47,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=450, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2024-06-28 01:25:47,326 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2024-06-28 01:25:47,327 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 450 flow [2024-06-28 01:25:47,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:47,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:47,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:47,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:25:47,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:47,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1245848499, now seen corresponding path program 2 times [2024-06-28 01:25:47,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:47,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903226777] [2024-06-28 01:25:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:47,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:48,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:48,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903226777] [2024-06-28 01:25:48,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903226777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:48,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:48,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:25:48,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437727285] [2024-06-28 01:25:48,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:48,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:25:48,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:48,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:25:48,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:25:48,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:25:48,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 450 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:48,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:48,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:25:48,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:48,991 INFO L124 PetriNetUnfolderBase]: 3181/5394 cut-off events. [2024-06-28 01:25:48,992 INFO L125 PetriNetUnfolderBase]: For 11894/11894 co-relation queries the response was YES. [2024-06-28 01:25:49,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16508 conditions, 5394 events. 3181/5394 cut-off events. For 11894/11894 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 34597 event pairs, 1267 based on Foata normal form. 4/5243 useless extension candidates. Maximal degree in co-relation 16481. Up to 4540 conditions per place. [2024-06-28 01:25:49,030 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 78 selfloop transitions, 13 changer transitions 0/101 dead transitions. [2024-06-28 01:25:49,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 101 transitions, 694 flow [2024-06-28 01:25:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:25:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:25:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:25:49,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-28 01:25:49,032 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 450 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:25:49,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 101 transitions, 694 flow [2024-06-28 01:25:49,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 101 transitions, 670 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-28 01:25:49,042 INFO L231 Difference]: Finished difference. Result has 77 places, 77 transitions, 460 flow [2024-06-28 01:25:49,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=460, PETRI_PLACES=77, PETRI_TRANSITIONS=77} [2024-06-28 01:25:49,044 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2024-06-28 01:25:49,045 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 77 transitions, 460 flow [2024-06-28 01:25:49,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:49,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:49,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:49,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:25:49,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:49,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:49,046 INFO L85 PathProgramCache]: Analyzing trace with hash 464893706, now seen corresponding path program 1 times [2024-06-28 01:25:49,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:49,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056338642] [2024-06-28 01:25:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:49,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:49,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:49,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:49,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056338642] [2024-06-28 01:25:49,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056338642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:49,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:49,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:25:49,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206055961] [2024-06-28 01:25:49,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:49,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:25:49,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:49,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:25:49,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:25:50,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:25:50,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 460 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:50,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:50,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:25:50,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:50,862 INFO L124 PetriNetUnfolderBase]: 3227/5346 cut-off events. [2024-06-28 01:25:50,862 INFO L125 PetriNetUnfolderBase]: For 13185/13185 co-relation queries the response was YES. [2024-06-28 01:25:50,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16849 conditions, 5346 events. 3227/5346 cut-off events. For 13185/13185 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 33138 event pairs, 1096 based on Foata normal form. 4/5195 useless extension candidates. Maximal degree in co-relation 16819. Up to 4571 conditions per place. [2024-06-28 01:25:50,906 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 95 selfloop transitions, 15 changer transitions 0/120 dead transitions. [2024-06-28 01:25:50,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 814 flow [2024-06-28 01:25:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:50,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:50,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:25:50,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-28 01:25:50,908 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 460 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:25:50,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 814 flow [2024-06-28 01:25:50,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 120 transitions, 781 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:25:50,920 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 497 flow [2024-06-28 01:25:50,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=497, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2024-06-28 01:25:50,921 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2024-06-28 01:25:50,921 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 497 flow [2024-06-28 01:25:50,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:50,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:50,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:50,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:25:50,922 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:50,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:50,923 INFO L85 PathProgramCache]: Analyzing trace with hash -201820702, now seen corresponding path program 2 times [2024-06-28 01:25:50,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:50,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588825545] [2024-06-28 01:25:50,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:50,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:51,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:51,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588825545] [2024-06-28 01:25:51,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588825545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:51,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:51,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:25:51,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466709277] [2024-06-28 01:25:51,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:51,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:25:51,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:51,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:25:51,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:25:52,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:25:52,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 497 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:52,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:52,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:25:52,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:52,697 INFO L124 PetriNetUnfolderBase]: 3469/5729 cut-off events. [2024-06-28 01:25:52,697 INFO L125 PetriNetUnfolderBase]: For 18341/18341 co-relation queries the response was YES. [2024-06-28 01:25:52,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19438 conditions, 5729 events. 3469/5729 cut-off events. For 18341/18341 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 35581 event pairs, 1090 based on Foata normal form. 4/5569 useless extension candidates. Maximal degree in co-relation 19408. Up to 4746 conditions per place. [2024-06-28 01:25:52,739 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 98 selfloop transitions, 30 changer transitions 0/138 dead transitions. [2024-06-28 01:25:52,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 138 transitions, 1087 flow [2024-06-28 01:25:52,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:25:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:25:52,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:25:52,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-28 01:25:52,742 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 497 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:25:52,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 138 transitions, 1087 flow [2024-06-28 01:25:52,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 138 transitions, 997 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:25:52,763 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 714 flow [2024-06-28 01:25:52,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=714, PETRI_PLACES=86, PETRI_TRANSITIONS=99} [2024-06-28 01:25:52,765 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2024-06-28 01:25:52,765 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 714 flow [2024-06-28 01:25:52,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:52,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:52,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:52,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:25:52,766 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:52,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:52,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2001224052, now seen corresponding path program 3 times [2024-06-28 01:25:52,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:52,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28685349] [2024-06-28 01:25:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:52,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:53,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:53,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:53,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28685349] [2024-06-28 01:25:53,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28685349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:53,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:53,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:25:53,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710443364] [2024-06-28 01:25:53,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:53,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:25:53,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:53,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:25:53,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:25:53,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:25:53,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 714 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:53,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:53,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:25:53,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:54,434 INFO L124 PetriNetUnfolderBase]: 3459/5823 cut-off events. [2024-06-28 01:25:54,435 INFO L125 PetriNetUnfolderBase]: For 22320/22320 co-relation queries the response was YES. [2024-06-28 01:25:54,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20445 conditions, 5823 events. 3459/5823 cut-off events. For 22320/22320 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 37255 event pairs, 1313 based on Foata normal form. 4/5661 useless extension candidates. Maximal degree in co-relation 20411. Up to 4885 conditions per place. [2024-06-28 01:25:54,476 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 104 selfloop transitions, 17 changer transitions 0/131 dead transitions. [2024-06-28 01:25:54,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 131 transitions, 1042 flow [2024-06-28 01:25:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:54,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:25:54,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167173252279635 [2024-06-28 01:25:54,480 INFO L175 Difference]: Start difference. First operand has 86 places, 99 transitions, 714 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:25:54,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 131 transitions, 1042 flow [2024-06-28 01:25:54,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 1000 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-28 01:25:54,509 INFO L231 Difference]: Finished difference. Result has 92 places, 99 transitions, 714 flow [2024-06-28 01:25:54,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=714, PETRI_PLACES=92, PETRI_TRANSITIONS=99} [2024-06-28 01:25:54,510 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2024-06-28 01:25:54,510 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 99 transitions, 714 flow [2024-06-28 01:25:54,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:54,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:54,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:54,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:25:54,512 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:54,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:54,512 INFO L85 PathProgramCache]: Analyzing trace with hash 412074258, now seen corresponding path program 4 times [2024-06-28 01:25:54,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:54,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077542627] [2024-06-28 01:25:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:55,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:55,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:55,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077542627] [2024-06-28 01:25:55,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077542627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:55,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:55,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:25:55,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658621303] [2024-06-28 01:25:55,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:55,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:25:55,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:55,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:25:55,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:25:55,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:25:55,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 99 transitions, 714 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:55,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:55,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:25:55,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:56,496 INFO L124 PetriNetUnfolderBase]: 3824/6348 cut-off events. [2024-06-28 01:25:56,496 INFO L125 PetriNetUnfolderBase]: For 25374/25374 co-relation queries the response was YES. [2024-06-28 01:25:56,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23014 conditions, 6348 events. 3824/6348 cut-off events. For 25374/25374 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 40276 event pairs, 1191 based on Foata normal form. 4/6188 useless extension candidates. Maximal degree in co-relation 22977. Up to 4991 conditions per place. [2024-06-28 01:25:56,545 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 118 selfloop transitions, 68 changer transitions 0/196 dead transitions. [2024-06-28 01:25:56,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 196 transitions, 1686 flow [2024-06-28 01:25:56,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:25:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:25:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:25:56,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-28 01:25:56,549 INFO L175 Difference]: Start difference. First operand has 92 places, 99 transitions, 714 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:25:56,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 196 transitions, 1686 flow [2024-06-28 01:25:56,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 196 transitions, 1609 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:25:56,580 INFO L231 Difference]: Finished difference. Result has 98 places, 146 transitions, 1302 flow [2024-06-28 01:25:56,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1302, PETRI_PLACES=98, PETRI_TRANSITIONS=146} [2024-06-28 01:25:56,581 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2024-06-28 01:25:56,581 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 146 transitions, 1302 flow [2024-06-28 01:25:56,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:56,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:56,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:56,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:25:56,582 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:56,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:56,583 INFO L85 PathProgramCache]: Analyzing trace with hash 27423213, now seen corresponding path program 1 times [2024-06-28 01:25:56,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:56,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129739611] [2024-06-28 01:25:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:56,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:57,975 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 01:25:57,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:57,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129739611] [2024-06-28 01:25:57,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129739611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:57,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:57,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:25:57,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028539452] [2024-06-28 01:25:57,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:57,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:25:57,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:57,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:25:57,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:25:58,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:25:58,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 146 transitions, 1302 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 01:25:58,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:58,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:25:58,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:59,225 INFO L124 PetriNetUnfolderBase]: 4781/7885 cut-off events. [2024-06-28 01:25:59,225 INFO L125 PetriNetUnfolderBase]: For 38898/38898 co-relation queries the response was YES. [2024-06-28 01:25:59,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30863 conditions, 7885 events. 4781/7885 cut-off events. For 38898/38898 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 50520 event pairs, 1720 based on Foata normal form. 4/7665 useless extension candidates. Maximal degree in co-relation 30822. Up to 6723 conditions per place. [2024-06-28 01:25:59,275 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 158 selfloop transitions, 21 changer transitions 0/188 dead transitions. [2024-06-28 01:25:59,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 188 transitions, 1845 flow [2024-06-28 01:25:59,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:25:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:25:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 01:25:59,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-06-28 01:25:59,277 INFO L175 Difference]: Start difference. First operand has 98 places, 146 transitions, 1302 flow. Second operand 7 states and 165 transitions. [2024-06-28 01:25:59,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 188 transitions, 1845 flow [2024-06-28 01:25:59,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 188 transitions, 1797 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 01:25:59,311 INFO L231 Difference]: Finished difference. Result has 104 places, 153 transitions, 1383 flow [2024-06-28 01:25:59,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1383, PETRI_PLACES=104, PETRI_TRANSITIONS=153} [2024-06-28 01:25:59,312 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2024-06-28 01:25:59,312 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 153 transitions, 1383 flow [2024-06-28 01:25:59,312 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 01:25:59,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:59,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:59,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:25:59,313 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:25:59,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:59,313 INFO L85 PathProgramCache]: Analyzing trace with hash -284715897, now seen corresponding path program 1 times [2024-06-28 01:25:59,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:59,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294217180] [2024-06-28 01:25:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:59,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:59,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:59,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294217180] [2024-06-28 01:25:59,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294217180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:59,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:59,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:25:59,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021777434] [2024-06-28 01:25:59,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:59,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:25:59,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:59,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:25:59,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:26:00,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:00,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 153 transitions, 1383 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:00,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:00,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:00,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:01,022 INFO L124 PetriNetUnfolderBase]: 4908/7997 cut-off events. [2024-06-28 01:26:01,022 INFO L125 PetriNetUnfolderBase]: For 46751/46872 co-relation queries the response was YES. [2024-06-28 01:26:01,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32010 conditions, 7997 events. 4908/7997 cut-off events. For 46751/46872 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 50816 event pairs, 1854 based on Foata normal form. 89/7836 useless extension candidates. Maximal degree in co-relation 31966. Up to 6952 conditions per place. [2024-06-28 01:26:01,074 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 143 selfloop transitions, 12 changer transitions 0/170 dead transitions. [2024-06-28 01:26:01,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 170 transitions, 1757 flow [2024-06-28 01:26:01,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:26:01,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:26:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-28 01:26:01,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-06-28 01:26:01,076 INFO L175 Difference]: Start difference. First operand has 104 places, 153 transitions, 1383 flow. Second operand 5 states and 114 transitions. [2024-06-28 01:26:01,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 170 transitions, 1757 flow [2024-06-28 01:26:01,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 170 transitions, 1698 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:26:01,116 INFO L231 Difference]: Finished difference. Result has 105 places, 156 transitions, 1381 flow [2024-06-28 01:26:01,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1381, PETRI_PLACES=105, PETRI_TRANSITIONS=156} [2024-06-28 01:26:01,117 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 52 predicate places. [2024-06-28 01:26:01,117 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 156 transitions, 1381 flow [2024-06-28 01:26:01,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:01,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:01,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:01,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:26:01,118 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:01,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:01,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1526800382, now seen corresponding path program 1 times [2024-06-28 01:26:01,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:01,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543596877] [2024-06-28 01:26:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:01,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:02,266 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 01:26:02,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:02,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543596877] [2024-06-28 01:26:02,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543596877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:02,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:02,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:26:02,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568952719] [2024-06-28 01:26:02,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:02,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:26:02,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:02,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:26:02,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:26:02,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:26:02,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 156 transitions, 1381 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:02,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:02,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:26:02,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:03,712 INFO L124 PetriNetUnfolderBase]: 4801/7877 cut-off events. [2024-06-28 01:26:03,712 INFO L125 PetriNetUnfolderBase]: For 50292/50300 co-relation queries the response was YES. [2024-06-28 01:26:03,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33071 conditions, 7877 events. 4801/7877 cut-off events. For 50292/50300 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 51254 event pairs, 1472 based on Foata normal form. 10/7644 useless extension candidates. Maximal degree in co-relation 33026. Up to 6407 conditions per place. [2024-06-28 01:26:03,760 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 164 selfloop transitions, 61 changer transitions 0/237 dead transitions. [2024-06-28 01:26:03,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 237 transitions, 2277 flow [2024-06-28 01:26:03,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:26:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:26:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:26:03,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-06-28 01:26:03,763 INFO L175 Difference]: Start difference. First operand has 105 places, 156 transitions, 1381 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:26:03,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 237 transitions, 2277 flow [2024-06-28 01:26:03,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 237 transitions, 2244 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:26:03,801 INFO L231 Difference]: Finished difference. Result has 112 places, 165 transitions, 1629 flow [2024-06-28 01:26:03,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1629, PETRI_PLACES=112, PETRI_TRANSITIONS=165} [2024-06-28 01:26:03,802 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2024-06-28 01:26:03,802 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 165 transitions, 1629 flow [2024-06-28 01:26:03,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:03,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:03,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:03,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:26:03,803 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:03,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:03,804 INFO L85 PathProgramCache]: Analyzing trace with hash -332453382, now seen corresponding path program 2 times [2024-06-28 01:26:03,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:03,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258627260] [2024-06-28 01:26:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:03,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:03,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:05,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:05,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258627260] [2024-06-28 01:26:05,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258627260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:05,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:05,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:26:05,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962098243] [2024-06-28 01:26:05,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:05,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:26:05,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:05,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:26:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:26:05,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:26:05,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 165 transitions, 1629 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:05,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:05,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:26:05,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:06,328 INFO L124 PetriNetUnfolderBase]: 4803/7916 cut-off events. [2024-06-28 01:26:06,328 INFO L125 PetriNetUnfolderBase]: For 59118/59132 co-relation queries the response was YES. [2024-06-28 01:26:06,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34873 conditions, 7916 events. 4803/7916 cut-off events. For 59118/59132 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 51882 event pairs, 1504 based on Foata normal form. 10/7669 useless extension candidates. Maximal degree in co-relation 34826. Up to 6509 conditions per place. [2024-06-28 01:26:06,387 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 169 selfloop transitions, 44 changer transitions 0/225 dead transitions. [2024-06-28 01:26:06,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 225 transitions, 2321 flow [2024-06-28 01:26:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:26:06,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:26:06,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:26:06,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-28 01:26:06,389 INFO L175 Difference]: Start difference. First operand has 112 places, 165 transitions, 1629 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:26:06,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 225 transitions, 2321 flow [2024-06-28 01:26:06,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 225 transitions, 2164 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-28 01:26:06,454 INFO L231 Difference]: Finished difference. Result has 116 places, 168 transitions, 1622 flow [2024-06-28 01:26:06,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1500, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1622, PETRI_PLACES=116, PETRI_TRANSITIONS=168} [2024-06-28 01:26:06,455 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 63 predicate places. [2024-06-28 01:26:06,455 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 168 transitions, 1622 flow [2024-06-28 01:26:06,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:06,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:06,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:06,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:26:06,456 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:06,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:06,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2085379236, now seen corresponding path program 3 times [2024-06-28 01:26:06,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:06,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705402451] [2024-06-28 01:26:06,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:06,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:07,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:07,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705402451] [2024-06-28 01:26:07,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705402451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:07,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:07,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:26:07,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984208110] [2024-06-28 01:26:07,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:07,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:26:07,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:26:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:26:07,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:26:07,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 168 transitions, 1622 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:07,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:07,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:26:07,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:08,749 INFO L124 PetriNetUnfolderBase]: 4860/7998 cut-off events. [2024-06-28 01:26:08,749 INFO L125 PetriNetUnfolderBase]: For 64075/64077 co-relation queries the response was YES. [2024-06-28 01:26:08,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35625 conditions, 7998 events. 4860/7998 cut-off events. For 64075/64077 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 52425 event pairs, 1385 based on Foata normal form. 4/7768 useless extension candidates. Maximal degree in co-relation 35576. Up to 6027 conditions per place. [2024-06-28 01:26:08,817 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 120 selfloop transitions, 108 changer transitions 0/240 dead transitions. [2024-06-28 01:26:08,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 240 transitions, 2564 flow [2024-06-28 01:26:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:26:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:26:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:26:08,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:26:08,819 INFO L175 Difference]: Start difference. First operand has 116 places, 168 transitions, 1622 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:26:08,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 240 transitions, 2564 flow [2024-06-28 01:26:08,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 240 transitions, 2480 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:26:08,888 INFO L231 Difference]: Finished difference. Result has 119 places, 180 transitions, 2009 flow [2024-06-28 01:26:08,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2009, PETRI_PLACES=119, PETRI_TRANSITIONS=180} [2024-06-28 01:26:08,889 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 66 predicate places. [2024-06-28 01:26:08,889 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 180 transitions, 2009 flow [2024-06-28 01:26:08,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:08,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:08,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:08,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:26:08,890 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:08,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:08,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1299858074, now seen corresponding path program 1 times [2024-06-28 01:26:08,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:08,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926809284] [2024-06-28 01:26:08,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:08,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:09,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:09,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:09,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926809284] [2024-06-28 01:26:09,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926809284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:09,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:09,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:26:10,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511769466] [2024-06-28 01:26:10,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:10,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:26:10,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:10,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:26:10,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:26:10,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:10,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 180 transitions, 2009 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 01:26:10,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:10,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:10,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:11,306 INFO L124 PetriNetUnfolderBase]: 5366/8544 cut-off events. [2024-06-28 01:26:11,306 INFO L125 PetriNetUnfolderBase]: For 80041/80041 co-relation queries the response was YES. [2024-06-28 01:26:11,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41414 conditions, 8544 events. 5366/8544 cut-off events. For 80041/80041 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 53861 event pairs, 1773 based on Foata normal form. 2/8342 useless extension candidates. Maximal degree in co-relation 41363. Up to 7444 conditions per place. [2024-06-28 01:26:11,363 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 190 selfloop transitions, 28 changer transitions 0/228 dead transitions. [2024-06-28 01:26:11,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 228 transitions, 2715 flow [2024-06-28 01:26:11,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:26:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:26:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-06-28 01:26:11,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045592705167173 [2024-06-28 01:26:11,364 INFO L175 Difference]: Start difference. First operand has 119 places, 180 transitions, 2009 flow. Second operand 7 states and 166 transitions. [2024-06-28 01:26:11,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 228 transitions, 2715 flow [2024-06-28 01:26:11,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 228 transitions, 2573 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-28 01:26:11,494 INFO L231 Difference]: Finished difference. Result has 123 places, 189 transitions, 2082 flow [2024-06-28 01:26:11,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2082, PETRI_PLACES=123, PETRI_TRANSITIONS=189} [2024-06-28 01:26:11,494 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-06-28 01:26:11,495 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 189 transitions, 2082 flow [2024-06-28 01:26:11,495 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 01:26:11,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:11,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:11,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:26:11,495 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:11,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:11,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1492820122, now seen corresponding path program 4 times [2024-06-28 01:26:11,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:11,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090229513] [2024-06-28 01:26:11,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:11,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:12,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:12,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090229513] [2024-06-28 01:26:12,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090229513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:12,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:12,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:26:12,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462594209] [2024-06-28 01:26:12,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:12,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:26:12,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:12,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:26:12,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:26:12,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:26:12,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 189 transitions, 2082 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:12,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:12,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:26:12,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:13,690 INFO L124 PetriNetUnfolderBase]: 4905/7851 cut-off events. [2024-06-28 01:26:13,691 INFO L125 PetriNetUnfolderBase]: For 73511/73516 co-relation queries the response was YES. [2024-06-28 01:26:13,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37539 conditions, 7851 events. 4905/7851 cut-off events. For 73511/73516 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 50349 event pairs, 1455 based on Foata normal form. 6/7675 useless extension candidates. Maximal degree in co-relation 37487. Up to 6589 conditions per place. [2024-06-28 01:26:13,755 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 193 selfloop transitions, 36 changer transitions 0/241 dead transitions. [2024-06-28 01:26:13,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 241 transitions, 2774 flow [2024-06-28 01:26:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:26:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:26:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:26:13,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 01:26:13,757 INFO L175 Difference]: Start difference. First operand has 123 places, 189 transitions, 2082 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:26:13,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 241 transitions, 2774 flow [2024-06-28 01:26:13,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 241 transitions, 2699 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:26:13,839 INFO L231 Difference]: Finished difference. Result has 126 places, 192 transitions, 2141 flow [2024-06-28 01:26:13,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2141, PETRI_PLACES=126, PETRI_TRANSITIONS=192} [2024-06-28 01:26:13,839 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 73 predicate places. [2024-06-28 01:26:13,840 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 192 transitions, 2141 flow [2024-06-28 01:26:13,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:13,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:13,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:13,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:26:13,840 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:13,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:13,841 INFO L85 PathProgramCache]: Analyzing trace with hash -236256830, now seen corresponding path program 1 times [2024-06-28 01:26:13,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:13,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653473260] [2024-06-28 01:26:13,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:13,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:14,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:14,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653473260] [2024-06-28 01:26:14,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653473260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:14,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:14,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:26:14,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288156021] [2024-06-28 01:26:14,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:14,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:26:14,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:14,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:26:14,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:26:14,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:14,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 192 transitions, 2141 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:14,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:14,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:14,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:15,736 INFO L124 PetriNetUnfolderBase]: 5335/8189 cut-off events. [2024-06-28 01:26:15,737 INFO L125 PetriNetUnfolderBase]: For 86624/86904 co-relation queries the response was YES. [2024-06-28 01:26:15,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40197 conditions, 8189 events. 5335/8189 cut-off events. For 86624/86904 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 48880 event pairs, 1825 based on Foata normal form. 146/8163 useless extension candidates. Maximal degree in co-relation 40144. Up to 7471 conditions per place. [2024-06-28 01:26:15,807 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 183 selfloop transitions, 15 changer transitions 0/216 dead transitions. [2024-06-28 01:26:15,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 216 transitions, 2627 flow [2024-06-28 01:26:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:26:15,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:26:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:26:15,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-28 01:26:15,808 INFO L175 Difference]: Start difference. First operand has 126 places, 192 transitions, 2141 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:26:15,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 216 transitions, 2627 flow [2024-06-28 01:26:15,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 216 transitions, 2521 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:26:15,901 INFO L231 Difference]: Finished difference. Result has 126 places, 195 transitions, 2101 flow [2024-06-28 01:26:15,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2035, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2101, PETRI_PLACES=126, PETRI_TRANSITIONS=195} [2024-06-28 01:26:15,901 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 73 predicate places. [2024-06-28 01:26:15,901 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 195 transitions, 2101 flow [2024-06-28 01:26:15,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:15,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:15,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:15,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:26:15,902 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:15,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:15,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1605414705, now seen corresponding path program 1 times [2024-06-28 01:26:15,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:15,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050304523] [2024-06-28 01:26:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:15,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:17,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:17,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050304523] [2024-06-28 01:26:17,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050304523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:17,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:17,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:26:17,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367401579] [2024-06-28 01:26:17,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:17,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:17,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:17,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:17,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:17,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:26:17,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 195 transitions, 2101 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:17,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:17,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:26:17,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:18,623 INFO L124 PetriNetUnfolderBase]: 5391/8624 cut-off events. [2024-06-28 01:26:18,623 INFO L125 PetriNetUnfolderBase]: For 98809/98819 co-relation queries the response was YES. [2024-06-28 01:26:18,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43412 conditions, 8624 events. 5391/8624 cut-off events. For 98809/98819 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 55823 event pairs, 1287 based on Foata normal form. 26/8434 useless extension candidates. Maximal degree in co-relation 43358. Up to 6708 conditions per place. [2024-06-28 01:26:18,692 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 228 selfloop transitions, 53 changer transitions 0/293 dead transitions. [2024-06-28 01:26:18,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 293 transitions, 3200 flow [2024-06-28 01:26:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-28 01:26:18,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2024-06-28 01:26:18,694 INFO L175 Difference]: Start difference. First operand has 126 places, 195 transitions, 2101 flow. Second operand 10 states and 262 transitions. [2024-06-28 01:26:18,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 293 transitions, 3200 flow [2024-06-28 01:26:18,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 293 transitions, 3156 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:26:18,787 INFO L231 Difference]: Finished difference. Result has 134 places, 204 transitions, 2306 flow [2024-06-28 01:26:18,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2306, PETRI_PLACES=134, PETRI_TRANSITIONS=204} [2024-06-28 01:26:18,788 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 81 predicate places. [2024-06-28 01:26:18,788 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 204 transitions, 2306 flow [2024-06-28 01:26:18,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:18,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:18,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:18,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:26:18,789 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:18,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash -340333421, now seen corresponding path program 2 times [2024-06-28 01:26:18,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:18,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34194450] [2024-06-28 01:26:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:20,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:20,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34194450] [2024-06-28 01:26:20,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34194450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:20,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:20,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:26:20,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137944805] [2024-06-28 01:26:20,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:20,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:20,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:20,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:20,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:20,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:26:20,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 204 transitions, 2306 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:20,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:20,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:26:20,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:21,753 INFO L124 PetriNetUnfolderBase]: 5322/8482 cut-off events. [2024-06-28 01:26:21,753 INFO L125 PetriNetUnfolderBase]: For 105149/105159 co-relation queries the response was YES. [2024-06-28 01:26:21,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43488 conditions, 8482 events. 5322/8482 cut-off events. For 105149/105159 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 54747 event pairs, 1539 based on Foata normal form. 34/8324 useless extension candidates. Maximal degree in co-relation 43431. Up to 6873 conditions per place. [2024-06-28 01:26:21,824 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 224 selfloop transitions, 51 changer transitions 0/287 dead transitions. [2024-06-28 01:26:21,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 287 transitions, 3200 flow [2024-06-28 01:26:21,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:26:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:26:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-28 01:26:21,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446808510638298 [2024-06-28 01:26:21,825 INFO L175 Difference]: Start difference. First operand has 134 places, 204 transitions, 2306 flow. Second operand 10 states and 256 transitions. [2024-06-28 01:26:21,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 287 transitions, 3200 flow [2024-06-28 01:26:21,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 287 transitions, 3136 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:26:21,973 INFO L231 Difference]: Finished difference. Result has 140 places, 205 transitions, 2375 flow [2024-06-28 01:26:21,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2375, PETRI_PLACES=140, PETRI_TRANSITIONS=205} [2024-06-28 01:26:21,974 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 87 predicate places. [2024-06-28 01:26:21,974 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 205 transitions, 2375 flow [2024-06-28 01:26:21,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:21,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:21,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:21,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:26:21,976 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:21,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:21,976 INFO L85 PathProgramCache]: Analyzing trace with hash -222245741, now seen corresponding path program 3 times [2024-06-28 01:26:21,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:21,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330199367] [2024-06-28 01:26:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:21,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:23,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:23,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330199367] [2024-06-28 01:26:23,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330199367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:23,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:23,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:26:23,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644107939] [2024-06-28 01:26:23,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:23,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:23,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:23,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:23,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:23,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:26:23,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 205 transitions, 2375 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:23,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:23,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:26:23,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:24,668 INFO L124 PetriNetUnfolderBase]: 5524/8788 cut-off events. [2024-06-28 01:26:24,668 INFO L125 PetriNetUnfolderBase]: For 115208/115214 co-relation queries the response was YES. [2024-06-28 01:26:24,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45780 conditions, 8788 events. 5524/8788 cut-off events. For 115208/115214 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 56991 event pairs, 1509 based on Foata normal form. 28/8646 useless extension candidates. Maximal degree in co-relation 45720. Up to 6758 conditions per place. [2024-06-28 01:26:24,740 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 172 selfloop transitions, 93 changer transitions 0/277 dead transitions. [2024-06-28 01:26:24,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 277 transitions, 3232 flow [2024-06-28 01:26:24,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:26:24,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:26:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:26:24,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-28 01:26:24,742 INFO L175 Difference]: Start difference. First operand has 140 places, 205 transitions, 2375 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:26:24,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 277 transitions, 3232 flow [2024-06-28 01:26:24,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 277 transitions, 3139 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:24,876 INFO L231 Difference]: Finished difference. Result has 143 places, 209 transitions, 2538 flow [2024-06-28 01:26:24,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2538, PETRI_PLACES=143, PETRI_TRANSITIONS=209} [2024-06-28 01:26:24,877 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 90 predicate places. [2024-06-28 01:26:24,877 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 209 transitions, 2538 flow [2024-06-28 01:26:24,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:24,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:24,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:24,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:26:24,878 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:24,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:24,878 INFO L85 PathProgramCache]: Analyzing trace with hash 90941389, now seen corresponding path program 1 times [2024-06-28 01:26:24,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:24,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394786092] [2024-06-28 01:26:24,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:24,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:26,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394786092] [2024-06-28 01:26:26,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394786092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:26,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:26,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:26:26,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678934152] [2024-06-28 01:26:26,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:26,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:26,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:26,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:26,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 209 transitions, 2538 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:26,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:26,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:26,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:27,813 INFO L124 PetriNetUnfolderBase]: 6147/9721 cut-off events. [2024-06-28 01:26:27,813 INFO L125 PetriNetUnfolderBase]: For 128262/128275 co-relation queries the response was YES. [2024-06-28 01:26:27,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51229 conditions, 9721 events. 6147/9721 cut-off events. For 128262/128275 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 62110 event pairs, 1762 based on Foata normal form. 16/9518 useless extension candidates. Maximal degree in co-relation 51167. Up to 8319 conditions per place. [2024-06-28 01:26:27,900 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 214 selfloop transitions, 55 changer transitions 0/279 dead transitions. [2024-06-28 01:26:27,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 279 transitions, 3480 flow [2024-06-28 01:26:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:26:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:26:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:26:27,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 01:26:27,902 INFO L175 Difference]: Start difference. First operand has 143 places, 209 transitions, 2538 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:26:27,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 279 transitions, 3480 flow [2024-06-28 01:26:28,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 279 transitions, 3283 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:26:28,103 INFO L231 Difference]: Finished difference. Result has 146 places, 220 transitions, 2651 flow [2024-06-28 01:26:28,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2357, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2651, PETRI_PLACES=146, PETRI_TRANSITIONS=220} [2024-06-28 01:26:28,103 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2024-06-28 01:26:28,103 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 220 transitions, 2651 flow [2024-06-28 01:26:28,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:28,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:28,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:28,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:26:28,104 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:28,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:28,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2093712127, now seen corresponding path program 1 times [2024-06-28 01:26:28,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:28,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980163080] [2024-06-28 01:26:28,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:28,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:28,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:28,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:28,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980163080] [2024-06-28 01:26:28,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980163080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:28,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:28,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:26:28,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394972516] [2024-06-28 01:26:28,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:28,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:26:28,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:28,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:26:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:26:29,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:29,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 220 transitions, 2651 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 01:26:29,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:29,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:29,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:30,291 INFO L124 PetriNetUnfolderBase]: 6161/10232 cut-off events. [2024-06-28 01:26:30,291 INFO L125 PetriNetUnfolderBase]: For 132388/132582 co-relation queries the response was YES. [2024-06-28 01:26:30,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51425 conditions, 10232 events. 6161/10232 cut-off events. For 132388/132582 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 69295 event pairs, 1915 based on Foata normal form. 57/9901 useless extension candidates. Maximal degree in co-relation 51361. Up to 8625 conditions per place. [2024-06-28 01:26:30,394 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 200 selfloop transitions, 35 changer transitions 0/257 dead transitions. [2024-06-28 01:26:30,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 257 transitions, 3340 flow [2024-06-28 01:26:30,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:26:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:26:30,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:26:30,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-28 01:26:30,395 INFO L175 Difference]: Start difference. First operand has 146 places, 220 transitions, 2651 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:26:30,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 257 transitions, 3340 flow [2024-06-28 01:26:30,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 257 transitions, 3200 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:26:30,594 INFO L231 Difference]: Finished difference. Result has 148 places, 230 transitions, 2695 flow [2024-06-28 01:26:30,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2695, PETRI_PLACES=148, PETRI_TRANSITIONS=230} [2024-06-28 01:26:30,595 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 95 predicate places. [2024-06-28 01:26:30,595 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 230 transitions, 2695 flow [2024-06-28 01:26:30,595 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 01:26:30,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:30,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:30,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:26:30,596 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:30,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash -967215339, now seen corresponding path program 4 times [2024-06-28 01:26:30,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:30,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536213377] [2024-06-28 01:26:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:31,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:31,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536213377] [2024-06-28 01:26:31,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536213377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:31,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:31,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:26:31,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953758394] [2024-06-28 01:26:31,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:31,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:31,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:31,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:31,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:32,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:26:32,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 230 transitions, 2695 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:32,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:32,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:26:32,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:33,588 INFO L124 PetriNetUnfolderBase]: 5854/9366 cut-off events. [2024-06-28 01:26:33,588 INFO L125 PetriNetUnfolderBase]: For 142652/142676 co-relation queries the response was YES. [2024-06-28 01:26:33,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50683 conditions, 9366 events. 5854/9366 cut-off events. For 142652/142676 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 61721 event pairs, 1629 based on Foata normal form. 26/9198 useless extension candidates. Maximal degree in co-relation 50617. Up to 7553 conditions per place. [2024-06-28 01:26:33,677 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 238 selfloop transitions, 57 changer transitions 0/311 dead transitions. [2024-06-28 01:26:33,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 311 transitions, 3825 flow [2024-06-28 01:26:33,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:33,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2024-06-28 01:26:33,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183752417794971 [2024-06-28 01:26:33,679 INFO L175 Difference]: Start difference. First operand has 148 places, 230 transitions, 2695 flow. Second operand 11 states and 268 transitions. [2024-06-28 01:26:33,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 311 transitions, 3825 flow [2024-06-28 01:26:33,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 311 transitions, 3801 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-28 01:26:33,904 INFO L231 Difference]: Finished difference. Result has 160 places, 237 transitions, 2986 flow [2024-06-28 01:26:33,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2671, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2986, PETRI_PLACES=160, PETRI_TRANSITIONS=237} [2024-06-28 01:26:33,904 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 107 predicate places. [2024-06-28 01:26:33,904 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 237 transitions, 2986 flow [2024-06-28 01:26:33,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:33,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:33,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:33,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:26:33,905 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:33,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:33,905 INFO L85 PathProgramCache]: Analyzing trace with hash 639237417, now seen corresponding path program 2 times [2024-06-28 01:26:33,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:33,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963806452] [2024-06-28 01:26:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:33,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:34,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:34,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963806452] [2024-06-28 01:26:34,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963806452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:34,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:34,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:26:34,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808089641] [2024-06-28 01:26:34,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:34,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:34,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:34,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:34,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:35,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:35,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 237 transitions, 2986 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:35,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:35,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:35,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:36,580 INFO L124 PetriNetUnfolderBase]: 6350/10152 cut-off events. [2024-06-28 01:26:36,580 INFO L125 PetriNetUnfolderBase]: For 164704/164716 co-relation queries the response was YES. [2024-06-28 01:26:36,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56646 conditions, 10152 events. 6350/10152 cut-off events. For 164704/164716 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 66214 event pairs, 1910 based on Foata normal form. 4/9917 useless extension candidates. Maximal degree in co-relation 56575. Up to 8913 conditions per place. [2024-06-28 01:26:36,681 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 248 selfloop transitions, 24 changer transitions 0/285 dead transitions. [2024-06-28 01:26:36,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 285 transitions, 3742 flow [2024-06-28 01:26:36,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:26:36,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:26:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:26:36,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:26:36,683 INFO L175 Difference]: Start difference. First operand has 160 places, 237 transitions, 2986 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:26:36,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 285 transitions, 3742 flow [2024-06-28 01:26:37,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 285 transitions, 3533 flow, removed 56 selfloop flow, removed 6 redundant places. [2024-06-28 01:26:37,190 INFO L231 Difference]: Finished difference. Result has 163 places, 242 transitions, 2913 flow [2024-06-28 01:26:37,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2778, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2913, PETRI_PLACES=163, PETRI_TRANSITIONS=242} [2024-06-28 01:26:37,192 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 110 predicate places. [2024-06-28 01:26:37,192 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 242 transitions, 2913 flow [2024-06-28 01:26:37,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:37,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:37,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:37,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:26:37,193 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:37,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:37,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1206156403, now seen corresponding path program 3 times [2024-06-28 01:26:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:37,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906807595] [2024-06-28 01:26:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:37,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:38,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:38,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:38,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906807595] [2024-06-28 01:26:38,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906807595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:38,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:38,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:26:38,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45726739] [2024-06-28 01:26:38,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:38,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:38,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:38,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:38,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 242 transitions, 2913 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:38,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:38,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:38,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:40,111 INFO L124 PetriNetUnfolderBase]: 6387/10191 cut-off events. [2024-06-28 01:26:40,111 INFO L125 PetriNetUnfolderBase]: For 165533/165545 co-relation queries the response was YES. [2024-06-28 01:26:40,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57006 conditions, 10191 events. 6387/10191 cut-off events. For 165533/165545 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 66380 event pairs, 1977 based on Foata normal form. 4/9962 useless extension candidates. Maximal degree in co-relation 56934. Up to 8978 conditions per place. [2024-06-28 01:26:40,204 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 252 selfloop transitions, 23 changer transitions 0/288 dead transitions. [2024-06-28 01:26:40,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 288 transitions, 3685 flow [2024-06-28 01:26:40,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:26:40,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:26:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:26:40,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-28 01:26:40,206 INFO L175 Difference]: Start difference. First operand has 163 places, 242 transitions, 2913 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:26:40,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 288 transitions, 3685 flow [2024-06-28 01:26:40,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 288 transitions, 3592 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:26:40,456 INFO L231 Difference]: Finished difference. Result has 167 places, 246 transitions, 2953 flow [2024-06-28 01:26:40,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2953, PETRI_PLACES=167, PETRI_TRANSITIONS=246} [2024-06-28 01:26:40,457 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 114 predicate places. [2024-06-28 01:26:40,457 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 246 transitions, 2953 flow [2024-06-28 01:26:40,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:40,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:40,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:40,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:26:40,458 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:40,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:40,459 INFO L85 PathProgramCache]: Analyzing trace with hash 638911917, now seen corresponding path program 4 times [2024-06-28 01:26:40,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:40,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201915767] [2024-06-28 01:26:40,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:40,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:41,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:41,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:41,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201915767] [2024-06-28 01:26:41,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201915767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:41,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:41,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:26:41,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271549562] [2024-06-28 01:26:41,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:41,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:41,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:41,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:41,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:41,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:41,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 246 transitions, 2953 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:41,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:41,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:41,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:43,350 INFO L124 PetriNetUnfolderBase]: 6424/10270 cut-off events. [2024-06-28 01:26:43,350 INFO L125 PetriNetUnfolderBase]: For 175763/175775 co-relation queries the response was YES. [2024-06-28 01:26:43,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57872 conditions, 10270 events. 6424/10270 cut-off events. For 175763/175775 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 67114 event pairs, 1998 based on Foata normal form. 4/10034 useless extension candidates. Maximal degree in co-relation 57798. Up to 8950 conditions per place. [2024-06-28 01:26:43,459 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 249 selfloop transitions, 33 changer transitions 0/295 dead transitions. [2024-06-28 01:26:43,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 295 transitions, 3751 flow [2024-06-28 01:26:43,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:26:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:26:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:26:43,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-28 01:26:43,461 INFO L175 Difference]: Start difference. First operand has 167 places, 246 transitions, 2953 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:26:43,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 295 transitions, 3751 flow [2024-06-28 01:26:43,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 295 transitions, 3670 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 01:26:43,745 INFO L231 Difference]: Finished difference. Result has 171 places, 248 transitions, 3009 flow [2024-06-28 01:26:43,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2872, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3009, PETRI_PLACES=171, PETRI_TRANSITIONS=248} [2024-06-28 01:26:43,748 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 118 predicate places. [2024-06-28 01:26:43,748 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 248 transitions, 3009 flow [2024-06-28 01:26:43,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:43,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:43,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:43,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:26:43,749 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:43,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:43,749 INFO L85 PathProgramCache]: Analyzing trace with hash 374137197, now seen corresponding path program 5 times [2024-06-28 01:26:43,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:43,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976701672] [2024-06-28 01:26:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:43,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:43,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:44,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:44,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976701672] [2024-06-28 01:26:44,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976701672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:44,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:44,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:26:44,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494012246] [2024-06-28 01:26:44,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:44,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:44,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:44,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:44,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:44,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:44,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 248 transitions, 3009 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:44,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:44,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:44,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:46,410 INFO L124 PetriNetUnfolderBase]: 6424/10259 cut-off events. [2024-06-28 01:26:46,410 INFO L125 PetriNetUnfolderBase]: For 183901/183913 co-relation queries the response was YES. [2024-06-28 01:26:46,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58208 conditions, 10259 events. 6424/10259 cut-off events. For 183901/183913 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 66939 event pairs, 1959 based on Foata normal form. 4/10027 useless extension candidates. Maximal degree in co-relation 58133. Up to 8952 conditions per place. [2024-06-28 01:26:46,518 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 258 selfloop transitions, 33 changer transitions 0/304 dead transitions. [2024-06-28 01:26:46,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 304 transitions, 3919 flow [2024-06-28 01:26:46,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:26:46,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:26:46,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:26:46,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-28 01:26:46,519 INFO L175 Difference]: Start difference. First operand has 171 places, 248 transitions, 3009 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:26:46,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 304 transitions, 3919 flow [2024-06-28 01:26:46,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 304 transitions, 3800 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:26:46,846 INFO L231 Difference]: Finished difference. Result has 174 places, 255 transitions, 3115 flow [2024-06-28 01:26:46,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2894, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3115, PETRI_PLACES=174, PETRI_TRANSITIONS=255} [2024-06-28 01:26:46,847 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-06-28 01:26:46,847 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 255 transitions, 3115 flow [2024-06-28 01:26:46,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:46,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:46,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:46,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:26:46,848 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:46,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1196988711, now seen corresponding path program 1 times [2024-06-28 01:26:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:46,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695746038] [2024-06-28 01:26:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:47,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:47,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695746038] [2024-06-28 01:26:47,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695746038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:47,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:47,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:26:47,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478729746] [2024-06-28 01:26:47,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:47,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:26:47,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:47,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:26:47,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:26:47,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:47,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 255 transitions, 3115 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:47,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:47,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:47,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:49,469 INFO L124 PetriNetUnfolderBase]: 6498/10369 cut-off events. [2024-06-28 01:26:49,469 INFO L125 PetriNetUnfolderBase]: For 182043/182055 co-relation queries the response was YES. [2024-06-28 01:26:49,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59104 conditions, 10369 events. 6498/10369 cut-off events. For 182043/182055 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 67661 event pairs, 1971 based on Foata normal form. 2/10129 useless extension candidates. Maximal degree in co-relation 59027. Up to 9017 conditions per place. [2024-06-28 01:26:49,583 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 264 selfloop transitions, 40 changer transitions 0/317 dead transitions. [2024-06-28 01:26:49,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 317 transitions, 4089 flow [2024-06-28 01:26:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:26:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:26:49,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:26:49,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-28 01:26:49,584 INFO L175 Difference]: Start difference. First operand has 174 places, 255 transitions, 3115 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:26:49,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 317 transitions, 4089 flow [2024-06-28 01:26:49,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 317 transitions, 3901 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-28 01:26:49,926 INFO L231 Difference]: Finished difference. Result has 177 places, 266 transitions, 3208 flow [2024-06-28 01:26:49,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3208, PETRI_PLACES=177, PETRI_TRANSITIONS=266} [2024-06-28 01:26:49,926 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 124 predicate places. [2024-06-28 01:26:49,926 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 266 transitions, 3208 flow [2024-06-28 01:26:49,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:49,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:49,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:49,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:26:49,927 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:49,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:49,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1265959429, now seen corresponding path program 2 times [2024-06-28 01:26:49,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:49,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920889937] [2024-06-28 01:26:49,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:49,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:50,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:50,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920889937] [2024-06-28 01:26:50,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920889937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:50,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:50,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:26:50,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284980796] [2024-06-28 01:26:50,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:50,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:26:50,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:50,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:26:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:26:50,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:50,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 266 transitions, 3208 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 01:26:50,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:50,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:50,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:52,037 INFO L124 PetriNetUnfolderBase]: 6449/10187 cut-off events. [2024-06-28 01:26:52,037 INFO L125 PetriNetUnfolderBase]: For 183435/183719 co-relation queries the response was YES. [2024-06-28 01:26:52,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57180 conditions, 10187 events. 6449/10187 cut-off events. For 183435/183719 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 65871 event pairs, 2037 based on Foata normal form. 160/10086 useless extension candidates. Maximal degree in co-relation 57102. Up to 9109 conditions per place. [2024-06-28 01:26:52,156 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 240 selfloop transitions, 14 changer transitions 0/282 dead transitions. [2024-06-28 01:26:52,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 282 transitions, 3770 flow [2024-06-28 01:26:52,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:26:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:26:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 01:26:52,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-28 01:26:52,158 INFO L175 Difference]: Start difference. First operand has 177 places, 266 transitions, 3208 flow. Second operand 6 states and 132 transitions. [2024-06-28 01:26:52,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 282 transitions, 3770 flow [2024-06-28 01:26:52,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 282 transitions, 3689 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:26:52,611 INFO L231 Difference]: Finished difference. Result has 177 places, 266 transitions, 3161 flow [2024-06-28 01:26:52,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3161, PETRI_PLACES=177, PETRI_TRANSITIONS=266} [2024-06-28 01:26:52,612 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 124 predicate places. [2024-06-28 01:26:52,612 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 266 transitions, 3161 flow [2024-06-28 01:26:52,612 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 01:26:52,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:52,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:52,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:26:52,613 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:52,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:52,613 INFO L85 PathProgramCache]: Analyzing trace with hash -125029078, now seen corresponding path program 1 times [2024-06-28 01:26:52,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:52,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345626058] [2024-06-28 01:26:52,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:52,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:53,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:53,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345626058] [2024-06-28 01:26:53,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345626058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:53,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:53,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:26:53,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38435884] [2024-06-28 01:26:53,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:53,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:26:53,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:53,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:26:53,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:26:53,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:26:53,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 266 transitions, 3161 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:53,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:53,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:26:53,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:55,018 INFO L124 PetriNetUnfolderBase]: 6864/10832 cut-off events. [2024-06-28 01:26:55,018 INFO L125 PetriNetUnfolderBase]: For 191972/191972 co-relation queries the response was YES. [2024-06-28 01:26:55,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60877 conditions, 10832 events. 6864/10832 cut-off events. For 191972/191972 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 69815 event pairs, 2189 based on Foata normal form. 1/10586 useless extension candidates. Maximal degree in co-relation 60798. Up to 9778 conditions per place. [2024-06-28 01:26:55,121 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 262 selfloop transitions, 25 changer transitions 0/295 dead transitions. [2024-06-28 01:26:55,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 295 transitions, 3931 flow [2024-06-28 01:26:55,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:26:55,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:26:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:26:55,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-06-28 01:26:55,123 INFO L175 Difference]: Start difference. First operand has 177 places, 266 transitions, 3161 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:26:55,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 295 transitions, 3931 flow [2024-06-28 01:26:55,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 295 transitions, 3866 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:26:55,435 INFO L231 Difference]: Finished difference. Result has 178 places, 272 transitions, 3211 flow [2024-06-28 01:26:55,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3211, PETRI_PLACES=178, PETRI_TRANSITIONS=272} [2024-06-28 01:26:55,436 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 125 predicate places. [2024-06-28 01:26:55,436 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 272 transitions, 3211 flow [2024-06-28 01:26:55,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:55,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:55,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:55,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:26:55,436 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:55,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:55,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1311546572, now seen corresponding path program 2 times [2024-06-28 01:26:55,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:55,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763950927] [2024-06-28 01:26:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:55,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:56,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:56,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763950927] [2024-06-28 01:26:56,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763950927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:56,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:56,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:26:56,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412981084] [2024-06-28 01:26:56,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:56,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:26:56,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:56,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:26:56,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:26:56,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:26:56,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 272 transitions, 3211 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:56,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:56,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:26:56,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:57,911 INFO L124 PetriNetUnfolderBase]: 6861/10826 cut-off events. [2024-06-28 01:26:57,912 INFO L125 PetriNetUnfolderBase]: For 200534/200537 co-relation queries the response was YES. [2024-06-28 01:26:57,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61951 conditions, 10826 events. 6861/10826 cut-off events. For 200534/200537 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 69730 event pairs, 2187 based on Foata normal form. 3/10582 useless extension candidates. Maximal degree in co-relation 61872. Up to 9775 conditions per place. [2024-06-28 01:26:58,246 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 258 selfloop transitions, 25 changer transitions 0/291 dead transitions. [2024-06-28 01:26:58,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 291 transitions, 3847 flow [2024-06-28 01:26:58,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:26:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:26:58,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 01:26:58,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645390070921986 [2024-06-28 01:26:58,247 INFO L175 Difference]: Start difference. First operand has 178 places, 272 transitions, 3211 flow. Second operand 6 states and 131 transitions. [2024-06-28 01:26:58,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 291 transitions, 3847 flow [2024-06-28 01:26:58,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 291 transitions, 3795 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 01:26:58,546 INFO L231 Difference]: Finished difference. Result has 182 places, 272 transitions, 3216 flow [2024-06-28 01:26:58,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3216, PETRI_PLACES=182, PETRI_TRANSITIONS=272} [2024-06-28 01:26:58,547 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 129 predicate places. [2024-06-28 01:26:58,547 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 272 transitions, 3216 flow [2024-06-28 01:26:58,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:58,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:58,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:58,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:26:58,547 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:58,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:58,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1475783164, now seen corresponding path program 1 times [2024-06-28 01:26:58,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:58,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57785950] [2024-06-28 01:26:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:58,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:59,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:59,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57785950] [2024-06-28 01:26:59,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57785950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:59,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:59,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:26:59,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900987218] [2024-06-28 01:26:59,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:59,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:26:59,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:59,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:26:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:26:59,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:26:59,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 272 transitions, 3216 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:59,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:59,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:26:59,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:01,510 INFO L124 PetriNetUnfolderBase]: 6641/10835 cut-off events. [2024-06-28 01:27:01,511 INFO L125 PetriNetUnfolderBase]: For 208548/208575 co-relation queries the response was YES. [2024-06-28 01:27:01,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60916 conditions, 10835 events. 6641/10835 cut-off events. For 208548/208575 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 72090 event pairs, 1817 based on Foata normal form. 6/10492 useless extension candidates. Maximal degree in co-relation 60835. Up to 8187 conditions per place. [2024-06-28 01:27:01,637 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 213 selfloop transitions, 132 changer transitions 0/360 dead transitions. [2024-06-28 01:27:01,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 360 transitions, 4556 flow [2024-06-28 01:27:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:27:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:27:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:27:01,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 01:27:01,639 INFO L175 Difference]: Start difference. First operand has 182 places, 272 transitions, 3216 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:27:01,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 360 transitions, 4556 flow [2024-06-28 01:27:02,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 360 transitions, 4486 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:27:02,306 INFO L231 Difference]: Finished difference. Result has 187 places, 298 transitions, 3874 flow [2024-06-28 01:27:02,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3146, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3874, PETRI_PLACES=187, PETRI_TRANSITIONS=298} [2024-06-28 01:27:02,306 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 134 predicate places. [2024-06-28 01:27:02,306 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 298 transitions, 3874 flow [2024-06-28 01:27:02,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:02,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:02,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:02,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:27:02,307 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:02,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash -480565112, now seen corresponding path program 1 times [2024-06-28 01:27:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:02,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228459130] [2024-06-28 01:27:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:02,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:03,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:03,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228459130] [2024-06-28 01:27:03,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228459130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:03,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:03,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:03,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870810675] [2024-06-28 01:27:03,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:03,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:03,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:03,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:03,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:03,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:03,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 298 transitions, 3874 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 01:27:03,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:03,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:03,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:04,817 INFO L124 PetriNetUnfolderBase]: 6518/10861 cut-off events. [2024-06-28 01:27:04,817 INFO L125 PetriNetUnfolderBase]: For 226519/226756 co-relation queries the response was YES. [2024-06-28 01:27:04,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61912 conditions, 10861 events. 6518/10861 cut-off events. For 226519/226756 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 74568 event pairs, 1909 based on Foata normal form. 105/10562 useless extension candidates. Maximal degree in co-relation 61829. Up to 9022 conditions per place. [2024-06-28 01:27:04,938 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 273 selfloop transitions, 43 changer transitions 0/344 dead transitions. [2024-06-28 01:27:04,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 344 transitions, 4797 flow [2024-06-28 01:27:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:27:04,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:27:04,940 INFO L175 Difference]: Start difference. First operand has 187 places, 298 transitions, 3874 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:27:04,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 344 transitions, 4797 flow [2024-06-28 01:27:05,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 344 transitions, 4635 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:05,386 INFO L231 Difference]: Finished difference. Result has 192 places, 308 transitions, 3920 flow [2024-06-28 01:27:05,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3712, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3920, PETRI_PLACES=192, PETRI_TRANSITIONS=308} [2024-06-28 01:27:05,386 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-06-28 01:27:05,386 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 308 transitions, 3920 flow [2024-06-28 01:27:05,387 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 01:27:05,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:05,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:05,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:27:05,387 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:05,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:05,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1263648994, now seen corresponding path program 2 times [2024-06-28 01:27:05,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:05,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486882440] [2024-06-28 01:27:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:05,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:06,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486882440] [2024-06-28 01:27:06,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486882440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:06,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:06,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:06,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742097353] [2024-06-28 01:27:06,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:06,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:06,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:06,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:06,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:06,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 308 transitions, 3920 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:06,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:06,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:06,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:08,400 INFO L124 PetriNetUnfolderBase]: 6796/10812 cut-off events. [2024-06-28 01:27:08,400 INFO L125 PetriNetUnfolderBase]: For 241319/241347 co-relation queries the response was YES. [2024-06-28 01:27:08,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65825 conditions, 10812 events. 6796/10812 cut-off events. For 241319/241347 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 70578 event pairs, 2014 based on Foata normal form. 4/10560 useless extension candidates. Maximal degree in co-relation 65739. Up to 9447 conditions per place. [2024-06-28 01:27:08,521 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 319 selfloop transitions, 31 changer transitions 0/365 dead transitions. [2024-06-28 01:27:08,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 365 transitions, 4898 flow [2024-06-28 01:27:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:27:08,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:27:08,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 01:27:08,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940898345153664 [2024-06-28 01:27:08,523 INFO L175 Difference]: Start difference. First operand has 192 places, 308 transitions, 3920 flow. Second operand 9 states and 209 transitions. [2024-06-28 01:27:08,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 365 transitions, 4898 flow [2024-06-28 01:27:09,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 365 transitions, 4851 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 01:27:09,025 INFO L231 Difference]: Finished difference. Result has 199 places, 310 transitions, 4005 flow [2024-06-28 01:27:09,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3873, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4005, PETRI_PLACES=199, PETRI_TRANSITIONS=310} [2024-06-28 01:27:09,026 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 146 predicate places. [2024-06-28 01:27:09,026 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 310 transitions, 4005 flow [2024-06-28 01:27:09,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:09,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:09,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:09,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:27:09,027 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:09,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1929975216, now seen corresponding path program 3 times [2024-06-28 01:27:09,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:09,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238886534] [2024-06-28 01:27:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:09,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:10,072 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 01:27:10,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:10,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238886534] [2024-06-28 01:27:10,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238886534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:10,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:10,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:10,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119610964] [2024-06-28 01:27:10,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:10,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:10,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:10,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:10,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:10,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:10,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 310 transitions, 4005 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:10,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:10,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:10,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:12,152 INFO L124 PetriNetUnfolderBase]: 6917/10984 cut-off events. [2024-06-28 01:27:12,152 INFO L125 PetriNetUnfolderBase]: For 256218/256246 co-relation queries the response was YES. [2024-06-28 01:27:12,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67587 conditions, 10984 events. 6917/10984 cut-off events. For 256218/256246 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 71664 event pairs, 2007 based on Foata normal form. 4/10734 useless extension candidates. Maximal degree in co-relation 67498. Up to 9371 conditions per place. [2024-06-28 01:27:12,295 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 312 selfloop transitions, 62 changer transitions 0/389 dead transitions. [2024-06-28 01:27:12,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 389 transitions, 5324 flow [2024-06-28 01:27:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:27:12,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:27:12,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 01:27:12,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-06-28 01:27:12,296 INFO L175 Difference]: Start difference. First operand has 199 places, 310 transitions, 4005 flow. Second operand 9 states and 215 transitions. [2024-06-28 01:27:12,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 389 transitions, 5324 flow [2024-06-28 01:27:12,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 389 transitions, 5221 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:27:12,759 INFO L231 Difference]: Finished difference. Result has 203 places, 327 transitions, 4373 flow [2024-06-28 01:27:12,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4373, PETRI_PLACES=203, PETRI_TRANSITIONS=327} [2024-06-28 01:27:12,760 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 150 predicate places. [2024-06-28 01:27:12,760 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 327 transitions, 4373 flow [2024-06-28 01:27:12,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:12,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:12,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:12,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:27:12,761 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:12,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:12,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1286647708, now seen corresponding path program 4 times [2024-06-28 01:27:12,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:12,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213371914] [2024-06-28 01:27:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:12,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:13,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:13,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213371914] [2024-06-28 01:27:13,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213371914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:13,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:13,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:13,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368479718] [2024-06-28 01:27:13,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:13,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:13,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:13,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:13,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:14,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:14,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 327 transitions, 4373 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:14,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:14,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:14,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:15,962 INFO L124 PetriNetUnfolderBase]: 6999/11129 cut-off events. [2024-06-28 01:27:15,963 INFO L125 PetriNetUnfolderBase]: For 278083/278111 co-relation queries the response was YES. [2024-06-28 01:27:16,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70059 conditions, 11129 events. 6999/11129 cut-off events. For 278083/278111 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 72947 event pairs, 2028 based on Foata normal form. 4/10871 useless extension candidates. Maximal degree in co-relation 69968. Up to 9362 conditions per place. [2024-06-28 01:27:16,091 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 308 selfloop transitions, 68 changer transitions 0/391 dead transitions. [2024-06-28 01:27:16,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 391 transitions, 5633 flow [2024-06-28 01:27:16,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:27:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:27:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-06-28 01:27:16,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-28 01:27:16,093 INFO L175 Difference]: Start difference. First operand has 203 places, 327 transitions, 4373 flow. Second operand 10 states and 230 transitions. [2024-06-28 01:27:16,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 391 transitions, 5633 flow [2024-06-28 01:27:16,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 391 transitions, 5468 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:16,640 INFO L231 Difference]: Finished difference. Result has 209 places, 331 transitions, 4487 flow [2024-06-28 01:27:16,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4208, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4487, PETRI_PLACES=209, PETRI_TRANSITIONS=331} [2024-06-28 01:27:16,641 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 156 predicate places. [2024-06-28 01:27:16,641 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 331 transitions, 4487 flow [2024-06-28 01:27:16,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:16,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:16,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:16,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:27:16,642 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:16,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:16,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1952772120, now seen corresponding path program 5 times [2024-06-28 01:27:16,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:16,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212890219] [2024-06-28 01:27:16,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:16,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:17,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:17,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212890219] [2024-06-28 01:27:17,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212890219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:17,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:17,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:17,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121931117] [2024-06-28 01:27:17,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:17,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:17,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:17,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:17,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:17,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:17,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 331 transitions, 4487 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:17,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:17,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:17,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:19,717 INFO L124 PetriNetUnfolderBase]: 7036/11211 cut-off events. [2024-06-28 01:27:19,717 INFO L125 PetriNetUnfolderBase]: For 292074/292102 co-relation queries the response was YES. [2024-06-28 01:27:19,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70480 conditions, 11211 events. 7036/11211 cut-off events. For 292074/292102 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 73724 event pairs, 2086 based on Foata normal form. 4/10946 useless extension candidates. Maximal degree in co-relation 70388. Up to 9711 conditions per place. [2024-06-28 01:27:19,853 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 335 selfloop transitions, 34 changer transitions 0/384 dead transitions. [2024-06-28 01:27:19,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 384 transitions, 5489 flow [2024-06-28 01:27:19,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:27:19,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:27:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 01:27:19,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-28 01:27:19,854 INFO L175 Difference]: Start difference. First operand has 209 places, 331 transitions, 4487 flow. Second operand 9 states and 210 transitions. [2024-06-28 01:27:19,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 384 transitions, 5489 flow [2024-06-28 01:27:20,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 384 transitions, 5328 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:20,417 INFO L231 Difference]: Finished difference. Result has 211 places, 333 transitions, 4475 flow [2024-06-28 01:27:20,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4326, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4475, PETRI_PLACES=211, PETRI_TRANSITIONS=333} [2024-06-28 01:27:20,418 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 158 predicate places. [2024-06-28 01:27:20,418 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 333 transitions, 4475 flow [2024-06-28 01:27:20,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:20,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:20,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:20,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:27:20,419 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:20,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:20,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1658475480, now seen corresponding path program 6 times [2024-06-28 01:27:20,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:20,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849516760] [2024-06-28 01:27:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:20,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:21,470 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 01:27:21,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:21,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849516760] [2024-06-28 01:27:21,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849516760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:21,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:21,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:21,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870119507] [2024-06-28 01:27:21,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:21,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:21,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:21,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:21,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:21,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:21,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 333 transitions, 4475 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:21,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:21,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:21,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:23,657 INFO L124 PetriNetUnfolderBase]: 7073/11291 cut-off events. [2024-06-28 01:27:23,657 INFO L125 PetriNetUnfolderBase]: For 301740/301768 co-relation queries the response was YES. [2024-06-28 01:27:23,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71335 conditions, 11291 events. 7073/11291 cut-off events. For 301740/301768 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 74411 event pairs, 2004 based on Foata normal form. 4/11017 useless extension candidates. Maximal degree in co-relation 71242. Up to 9873 conditions per place. [2024-06-28 01:27:23,807 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 344 selfloop transitions, 27 changer transitions 0/386 dead transitions. [2024-06-28 01:27:23,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 386 transitions, 5471 flow [2024-06-28 01:27:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:27:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:27:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 01:27:23,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-06-28 01:27:23,809 INFO L175 Difference]: Start difference. First operand has 211 places, 333 transitions, 4475 flow. Second operand 9 states and 211 transitions. [2024-06-28 01:27:23,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 386 transitions, 5471 flow [2024-06-28 01:27:24,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 386 transitions, 5340 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:24,476 INFO L231 Difference]: Finished difference. Result has 213 places, 335 transitions, 4483 flow [2024-06-28 01:27:24,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4344, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4483, PETRI_PLACES=213, PETRI_TRANSITIONS=335} [2024-06-28 01:27:24,477 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 160 predicate places. [2024-06-28 01:27:24,477 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 335 transitions, 4483 flow [2024-06-28 01:27:24,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:24,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:24,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:24,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:27:24,478 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:24,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:24,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1548056944, now seen corresponding path program 7 times [2024-06-28 01:27:24,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:24,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958444796] [2024-06-28 01:27:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:24,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:25,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:25,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958444796] [2024-06-28 01:27:25,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958444796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:25,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:25,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:25,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415326316] [2024-06-28 01:27:25,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:25,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:25,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:25,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:25,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:25,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 335 transitions, 4483 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:25,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:25,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:25,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:27,772 INFO L124 PetriNetUnfolderBase]: 7110/11337 cut-off events. [2024-06-28 01:27:27,772 INFO L125 PetriNetUnfolderBase]: For 315220/315248 co-relation queries the response was YES. [2024-06-28 01:27:27,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72058 conditions, 11337 events. 7110/11337 cut-off events. For 315220/315248 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 74753 event pairs, 2032 based on Foata normal form. 4/11067 useless extension candidates. Maximal degree in co-relation 71964. Up to 9800 conditions per place. [2024-06-28 01:27:27,917 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 338 selfloop transitions, 44 changer transitions 0/397 dead transitions. [2024-06-28 01:27:27,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 397 transitions, 5571 flow [2024-06-28 01:27:27,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:27:27,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:27:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-28 01:27:27,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-28 01:27:27,919 INFO L175 Difference]: Start difference. First operand has 213 places, 335 transitions, 4483 flow. Second operand 9 states and 213 transitions. [2024-06-28 01:27:27,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 397 transitions, 5571 flow [2024-06-28 01:27:28,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 397 transitions, 5450 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:28,600 INFO L231 Difference]: Finished difference. Result has 215 places, 337 transitions, 4543 flow [2024-06-28 01:27:28,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4362, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4543, PETRI_PLACES=215, PETRI_TRANSITIONS=337} [2024-06-28 01:27:28,601 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 162 predicate places. [2024-06-28 01:27:28,601 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 337 transitions, 4543 flow [2024-06-28 01:27:28,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:28,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:28,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:28,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:27:28,602 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:28,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2131071906, now seen corresponding path program 8 times [2024-06-28 01:27:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:28,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735177009] [2024-06-28 01:27:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:28,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:29,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:29,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735177009] [2024-06-28 01:27:29,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735177009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:29,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:29,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:29,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398370238] [2024-06-28 01:27:29,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:29,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:29,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:29,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:29,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:29,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:29,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 337 transitions, 4543 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:29,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:29,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:29,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:31,932 INFO L124 PetriNetUnfolderBase]: 7110/11323 cut-off events. [2024-06-28 01:27:31,932 INFO L125 PetriNetUnfolderBase]: For 325456/325484 co-relation queries the response was YES. [2024-06-28 01:27:32,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72280 conditions, 11323 events. 7110/11323 cut-off events. For 325456/325484 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 74477 event pairs, 2034 based on Foata normal form. 4/11057 useless extension candidates. Maximal degree in co-relation 72185. Up to 9639 conditions per place. [2024-06-28 01:27:32,090 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 330 selfloop transitions, 50 changer transitions 0/395 dead transitions. [2024-06-28 01:27:32,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 395 transitions, 5605 flow [2024-06-28 01:27:32,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:27:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:27:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:27:32,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 01:27:32,092 INFO L175 Difference]: Start difference. First operand has 215 places, 337 transitions, 4543 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:27:32,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 395 transitions, 5605 flow [2024-06-28 01:27:32,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 395 transitions, 5454 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:32,770 INFO L231 Difference]: Finished difference. Result has 217 places, 339 transitions, 4588 flow [2024-06-28 01:27:32,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4392, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4588, PETRI_PLACES=217, PETRI_TRANSITIONS=339} [2024-06-28 01:27:32,771 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 164 predicate places. [2024-06-28 01:27:32,771 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 339 transitions, 4588 flow [2024-06-28 01:27:32,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:32,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:32,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:32,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:27:32,772 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:32,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:32,772 INFO L85 PathProgramCache]: Analyzing trace with hash 81250644, now seen corresponding path program 9 times [2024-06-28 01:27:32,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:32,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924532469] [2024-06-28 01:27:32,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:32,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:33,812 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 01:27:33,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:33,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924532469] [2024-06-28 01:27:33,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924532469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:33,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:33,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:27:33,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815751964] [2024-06-28 01:27:33,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:33,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:27:33,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:33,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:27:33,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:27:33,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:33,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 339 transitions, 4588 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:33,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:33,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:33,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:35,921 INFO L124 PetriNetUnfolderBase]: 7102/11315 cut-off events. [2024-06-28 01:27:35,922 INFO L125 PetriNetUnfolderBase]: For 330213/330241 co-relation queries the response was YES. [2024-06-28 01:27:36,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72266 conditions, 11315 events. 7102/11315 cut-off events. For 330213/330241 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 74538 event pairs, 2029 based on Foata normal form. 4/11048 useless extension candidates. Maximal degree in co-relation 72170. Up to 9646 conditions per place. [2024-06-28 01:27:36,073 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 323 selfloop transitions, 63 changer transitions 0/401 dead transitions. [2024-06-28 01:27:36,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 401 transitions, 5624 flow [2024-06-28 01:27:36,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:27:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:27:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:27:36,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-28 01:27:36,075 INFO L175 Difference]: Start difference. First operand has 217 places, 339 transitions, 4588 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:27:36,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 401 transitions, 5624 flow [2024-06-28 01:27:36,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 401 transitions, 5412 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:36,868 INFO L231 Difference]: Finished difference. Result has 219 places, 339 transitions, 4510 flow [2024-06-28 01:27:36,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4376, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4510, PETRI_PLACES=219, PETRI_TRANSITIONS=339} [2024-06-28 01:27:36,869 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 166 predicate places. [2024-06-28 01:27:36,869 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 339 transitions, 4510 flow [2024-06-28 01:27:36,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:36,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:36,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:36,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:27:36,870 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:36,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash 590482560, now seen corresponding path program 2 times [2024-06-28 01:27:36,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:36,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803822516] [2024-06-28 01:27:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:36,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:37,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:37,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:37,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803822516] [2024-06-28 01:27:37,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803822516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:37,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:37,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:37,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637399488] [2024-06-28 01:27:37,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:37,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:37,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:37,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:37,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:37,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:37,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 339 transitions, 4510 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 01:27:37,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:37,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:37,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:39,424 INFO L124 PetriNetUnfolderBase]: 6844/10849 cut-off events. [2024-06-28 01:27:39,425 INFO L125 PetriNetUnfolderBase]: For 317441/317808 co-relation queries the response was YES. [2024-06-28 01:27:39,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67855 conditions, 10849 events. 6844/10849 cut-off events. For 317441/317808 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 71035 event pairs, 2024 based on Foata normal form. 193/10727 useless extension candidates. Maximal degree in co-relation 67758. Up to 9653 conditions per place. [2024-06-28 01:27:39,564 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 317 selfloop transitions, 18 changer transitions 0/363 dead transitions. [2024-06-28 01:27:39,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 363 transitions, 5290 flow [2024-06-28 01:27:39,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 01:27:39,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504559270516715 [2024-06-28 01:27:39,566 INFO L175 Difference]: Start difference. First operand has 219 places, 339 transitions, 4510 flow. Second operand 7 states and 153 transitions. [2024-06-28 01:27:39,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 363 transitions, 5290 flow [2024-06-28 01:27:40,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 363 transitions, 5113 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 01:27:40,085 INFO L231 Difference]: Finished difference. Result has 217 places, 342 transitions, 4421 flow [2024-06-28 01:27:40,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4333, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4421, PETRI_PLACES=217, PETRI_TRANSITIONS=342} [2024-06-28 01:27:40,085 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 164 predicate places. [2024-06-28 01:27:40,086 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 342 transitions, 4421 flow [2024-06-28 01:27:40,086 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 01:27:40,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:40,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:40,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:27:40,086 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:40,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:40,087 INFO L85 PathProgramCache]: Analyzing trace with hash 590038020, now seen corresponding path program 3 times [2024-06-28 01:27:40,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:40,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006694404] [2024-06-28 01:27:40,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:40,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:40,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:40,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006694404] [2024-06-28 01:27:40,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006694404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:40,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:40,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:40,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576698014] [2024-06-28 01:27:40,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:40,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:40,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:40,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:40,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:27:40,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 342 transitions, 4421 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 01:27:40,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:40,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:27:40,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:42,705 INFO L124 PetriNetUnfolderBase]: 6832/10828 cut-off events. [2024-06-28 01:27:42,705 INFO L125 PetriNetUnfolderBase]: For 305589/305940 co-relation queries the response was YES. [2024-06-28 01:27:42,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66706 conditions, 10828 events. 6832/10828 cut-off events. For 305589/305940 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 70894 event pairs, 2015 based on Foata normal form. 192/10708 useless extension candidates. Maximal degree in co-relation 66609. Up to 9596 conditions per place. [2024-06-28 01:27:42,831 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 316 selfloop transitions, 23 changer transitions 0/367 dead transitions. [2024-06-28 01:27:42,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 367 transitions, 5191 flow [2024-06-28 01:27:42,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 01:27:42,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-06-28 01:27:42,832 INFO L175 Difference]: Start difference. First operand has 217 places, 342 transitions, 4421 flow. Second operand 7 states and 158 transitions. [2024-06-28 01:27:42,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 367 transitions, 5191 flow [2024-06-28 01:27:43,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 367 transitions, 5104 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:43,348 INFO L231 Difference]: Finished difference. Result has 219 places, 342 transitions, 4386 flow [2024-06-28 01:27:43,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4334, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4386, PETRI_PLACES=219, PETRI_TRANSITIONS=342} [2024-06-28 01:27:43,349 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 166 predicate places. [2024-06-28 01:27:43,349 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 342 transitions, 4386 flow [2024-06-28 01:27:43,349 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 01:27:43,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:43,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:43,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:27:43,349 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:43,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:43,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1049538073, now seen corresponding path program 1 times [2024-06-28 01:27:43,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:43,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095120682] [2024-06-28 01:27:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:43,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:44,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:44,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095120682] [2024-06-28 01:27:44,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095120682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:44,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:44,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:44,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963537082] [2024-06-28 01:27:44,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:44,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:44,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:44,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:44,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:44,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:27:44,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 342 transitions, 4386 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:27:44,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:44,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:27:44,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:46,186 INFO L124 PetriNetUnfolderBase]: 7551/11967 cut-off events. [2024-06-28 01:27:46,186 INFO L125 PetriNetUnfolderBase]: For 318140/318140 co-relation queries the response was YES. [2024-06-28 01:27:46,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73082 conditions, 11967 events. 7551/11967 cut-off events. For 318140/318140 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 78700 event pairs, 2258 based on Foata normal form. 2/11680 useless extension candidates. Maximal degree in co-relation 72985. Up to 10722 conditions per place. [2024-06-28 01:27:46,322 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 345 selfloop transitions, 23 changer transitions 0/376 dead transitions. [2024-06-28 01:27:46,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 376 transitions, 5278 flow [2024-06-28 01:27:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:46,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:46,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:27:46,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416413373860183 [2024-06-28 01:27:46,323 INFO L175 Difference]: Start difference. First operand has 219 places, 342 transitions, 4386 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:27:46,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 376 transitions, 5278 flow [2024-06-28 01:27:46,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 376 transitions, 5185 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:27:46,835 INFO L231 Difference]: Finished difference. Result has 220 places, 345 transitions, 4392 flow [2024-06-28 01:27:46,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4293, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4392, PETRI_PLACES=220, PETRI_TRANSITIONS=345} [2024-06-28 01:27:46,836 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 167 predicate places. [2024-06-28 01:27:46,836 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 345 transitions, 4392 flow [2024-06-28 01:27:46,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:27:46,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:46,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:46,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:27:46,836 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:46,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash 583823233, now seen corresponding path program 1 times [2024-06-28 01:27:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:46,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629633719] [2024-06-28 01:27:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:46,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:47,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:47,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:47,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629633719] [2024-06-28 01:27:47,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629633719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:47,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:47,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:47,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672260071] [2024-06-28 01:27:47,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:47,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:47,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:47,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:47,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:47,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:27:47,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 345 transitions, 4392 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:27:47,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:47,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:27:47,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:49,781 INFO L124 PetriNetUnfolderBase]: 7602/11955 cut-off events. [2024-06-28 01:27:49,781 INFO L125 PetriNetUnfolderBase]: For 329439/329439 co-relation queries the response was YES. [2024-06-28 01:27:49,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74037 conditions, 11955 events. 7602/11955 cut-off events. For 329439/329439 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 77697 event pairs, 2259 based on Foata normal form. 3/11689 useless extension candidates. Maximal degree in co-relation 73939. Up to 10698 conditions per place. [2024-06-28 01:27:49,903 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 345 selfloop transitions, 33 changer transitions 0/386 dead transitions. [2024-06-28 01:27:49,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 386 transitions, 5438 flow [2024-06-28 01:27:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:49,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 01:27:49,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2024-06-28 01:27:49,905 INFO L175 Difference]: Start difference. First operand has 220 places, 345 transitions, 4392 flow. Second operand 7 states and 162 transitions. [2024-06-28 01:27:49,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 386 transitions, 5438 flow [2024-06-28 01:27:50,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 386 transitions, 5363 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:50,529 INFO L231 Difference]: Finished difference. Result has 222 places, 351 transitions, 4455 flow [2024-06-28 01:27:50,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4317, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4455, PETRI_PLACES=222, PETRI_TRANSITIONS=351} [2024-06-28 01:27:50,530 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 169 predicate places. [2024-06-28 01:27:50,530 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 351 transitions, 4455 flow [2024-06-28 01:27:50,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:27:50,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:50,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:50,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:27:50,531 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:50,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:50,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1049658043, now seen corresponding path program 2 times [2024-06-28 01:27:50,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:50,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044126356] [2024-06-28 01:27:50,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:50,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:51,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:51,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044126356] [2024-06-28 01:27:51,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044126356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:51,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:51,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:51,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375037092] [2024-06-28 01:27:51,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:51,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:51,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:51,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:51,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:51,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:27:51,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 351 transitions, 4455 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:27:51,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:51,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:27:51,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:53,527 INFO L124 PetriNetUnfolderBase]: 7636/12101 cut-off events. [2024-06-28 01:27:53,527 INFO L125 PetriNetUnfolderBase]: For 341366/341366 co-relation queries the response was YES. [2024-06-28 01:27:53,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75453 conditions, 12101 events. 7636/12101 cut-off events. For 341366/341366 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 79621 event pairs, 2266 based on Foata normal form. 2/11809 useless extension candidates. Maximal degree in co-relation 75354. Up to 10757 conditions per place. [2024-06-28 01:27:53,655 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 344 selfloop transitions, 36 changer transitions 0/388 dead transitions. [2024-06-28 01:27:53,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 388 transitions, 5529 flow [2024-06-28 01:27:53,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:53,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:53,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:27:53,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48328267477203646 [2024-06-28 01:27:53,657 INFO L175 Difference]: Start difference. First operand has 222 places, 351 transitions, 4455 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:27:53,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 388 transitions, 5529 flow [2024-06-28 01:27:54,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 388 transitions, 5477 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:54,298 INFO L231 Difference]: Finished difference. Result has 226 places, 357 transitions, 4583 flow [2024-06-28 01:27:54,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4403, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4583, PETRI_PLACES=226, PETRI_TRANSITIONS=357} [2024-06-28 01:27:54,298 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 173 predicate places. [2024-06-28 01:27:54,299 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 357 transitions, 4583 flow [2024-06-28 01:27:54,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:27:54,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:54,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:54,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:27:54,300 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:54,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:54,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1809799197, now seen corresponding path program 2 times [2024-06-28 01:27:54,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:54,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64004123] [2024-06-28 01:27:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:54,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:54,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:54,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64004123] [2024-06-28 01:27:54,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64004123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:54,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:54,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:54,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066538373] [2024-06-28 01:27:54,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:54,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:54,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:54,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:54,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:55,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:27:55,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 357 transitions, 4583 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:27:55,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:55,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:27:55,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:57,395 INFO L124 PetriNetUnfolderBase]: 7687/12073 cut-off events. [2024-06-28 01:27:57,396 INFO L125 PetriNetUnfolderBase]: For 357690/357693 co-relation queries the response was YES. [2024-06-28 01:27:57,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76646 conditions, 12073 events. 7687/12073 cut-off events. For 357690/357693 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 78332 event pairs, 2249 based on Foata normal form. 5/11808 useless extension candidates. Maximal degree in co-relation 76545. Up to 10786 conditions per place. [2024-06-28 01:27:57,543 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 344 selfloop transitions, 37 changer transitions 0/389 dead transitions. [2024-06-28 01:27:57,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 389 transitions, 5579 flow [2024-06-28 01:27:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:57,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:27:57,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416413373860183 [2024-06-28 01:27:57,544 INFO L175 Difference]: Start difference. First operand has 226 places, 357 transitions, 4583 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:27:57,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 389 transitions, 5579 flow [2024-06-28 01:27:58,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 389 transitions, 5509 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:58,129 INFO L231 Difference]: Finished difference. Result has 230 places, 360 transitions, 4624 flow [2024-06-28 01:27:58,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4513, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4624, PETRI_PLACES=230, PETRI_TRANSITIONS=360} [2024-06-28 01:27:58,129 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-06-28 01:27:58,129 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 360 transitions, 4624 flow [2024-06-28 01:27:58,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:27:58,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:58,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:58,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:27:58,130 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:58,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:58,131 INFO L85 PathProgramCache]: Analyzing trace with hash 596198597, now seen corresponding path program 3 times [2024-06-28 01:27:58,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:58,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702213583] [2024-06-28 01:27:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:58,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:58,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:58,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702213583] [2024-06-28 01:27:58,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702213583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:58,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:58,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:58,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549232812] [2024-06-28 01:27:58,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:58,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:58,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:58,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:58,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:58,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:27:58,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 360 transitions, 4624 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:27:58,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:58,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:27:58,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:01,020 INFO L124 PetriNetUnfolderBase]: 7681/12154 cut-off events. [2024-06-28 01:28:01,021 INFO L125 PetriNetUnfolderBase]: For 363918/363921 co-relation queries the response was YES. [2024-06-28 01:28:01,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76873 conditions, 12154 events. 7681/12154 cut-off events. For 363918/363921 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 79787 event pairs, 2276 based on Foata normal form. 2/11865 useless extension candidates. Maximal degree in co-relation 76770. Up to 10821 conditions per place. [2024-06-28 01:28:01,181 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 344 selfloop transitions, 36 changer transitions 0/388 dead transitions. [2024-06-28 01:28:01,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 388 transitions, 5514 flow [2024-06-28 01:28:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 01:28:01,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47112462006079026 [2024-06-28 01:28:01,183 INFO L175 Difference]: Start difference. First operand has 230 places, 360 transitions, 4624 flow. Second operand 7 states and 155 transitions. [2024-06-28 01:28:01,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 388 transitions, 5514 flow [2024-06-28 01:28:01,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 388 transitions, 5414 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:01,899 INFO L231 Difference]: Finished difference. Result has 233 places, 360 transitions, 4602 flow [2024-06-28 01:28:01,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4524, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4602, PETRI_PLACES=233, PETRI_TRANSITIONS=360} [2024-06-28 01:28:01,899 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 180 predicate places. [2024-06-28 01:28:01,900 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 360 transitions, 4602 flow [2024-06-28 01:28:01,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:28:01,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:01,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:01,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:28:01,900 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:01,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash 596198783, now seen corresponding path program 3 times [2024-06-28 01:28:01,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:01,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383014959] [2024-06-28 01:28:01,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:01,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:02,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:02,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383014959] [2024-06-28 01:28:02,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383014959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:02,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:02,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:02,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076156691] [2024-06-28 01:28:02,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:02,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:02,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:02,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:02,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:02,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:02,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 360 transitions, 4602 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:28:02,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:02,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:02,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:04,856 INFO L124 PetriNetUnfolderBase]: 7672/12057 cut-off events. [2024-06-28 01:28:04,856 INFO L125 PetriNetUnfolderBase]: For 370119/370122 co-relation queries the response was YES. [2024-06-28 01:28:04,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76510 conditions, 12057 events. 7672/12057 cut-off events. For 370119/370122 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 78365 event pairs, 2248 based on Foata normal form. 5/11791 useless extension candidates. Maximal degree in co-relation 76406. Up to 10771 conditions per place. [2024-06-28 01:28:04,998 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 346 selfloop transitions, 36 changer transitions 0/390 dead transitions. [2024-06-28 01:28:04,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 390 transitions, 5482 flow [2024-06-28 01:28:04,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:04,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 01:28:04,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-06-28 01:28:04,999 INFO L175 Difference]: Start difference. First operand has 233 places, 360 transitions, 4602 flow. Second operand 7 states and 158 transitions. [2024-06-28 01:28:04,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 390 transitions, 5482 flow [2024-06-28 01:28:05,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 390 transitions, 5368 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:05,628 INFO L231 Difference]: Finished difference. Result has 234 places, 360 transitions, 4566 flow [2024-06-28 01:28:05,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4488, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4566, PETRI_PLACES=234, PETRI_TRANSITIONS=360} [2024-06-28 01:28:05,628 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 181 predicate places. [2024-06-28 01:28:05,628 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 360 transitions, 4566 flow [2024-06-28 01:28:05,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:28:05,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:05,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:05,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:28:05,629 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:05,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1992683800, now seen corresponding path program 1 times [2024-06-28 01:28:05,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:05,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778322906] [2024-06-28 01:28:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:05,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:06,602 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 01:28:06,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778322906] [2024-06-28 01:28:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778322906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:06,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:06,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:06,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175422708] [2024-06-28 01:28:06,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:06,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:06,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:06,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:06,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 360 transitions, 4566 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:06,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:06,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:06,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:08,953 INFO L124 PetriNetUnfolderBase]: 7784/12287 cut-off events. [2024-06-28 01:28:08,953 INFO L125 PetriNetUnfolderBase]: For 379120/379122 co-relation queries the response was YES. [2024-06-28 01:28:09,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77676 conditions, 12287 events. 7784/12287 cut-off events. For 379120/379122 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 80558 event pairs, 2248 based on Foata normal form. 3/11996 useless extension candidates. Maximal degree in co-relation 77571. Up to 10932 conditions per place. [2024-06-28 01:28:09,096 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 378 selfloop transitions, 45 changer transitions 0/431 dead transitions. [2024-06-28 01:28:09,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 431 transitions, 5937 flow [2024-06-28 01:28:09,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:09,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-28 01:28:09,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553191489361702 [2024-06-28 01:28:09,097 INFO L175 Difference]: Start difference. First operand has 234 places, 360 transitions, 4566 flow. Second operand 10 states and 214 transitions. [2024-06-28 01:28:09,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 431 transitions, 5937 flow [2024-06-28 01:28:09,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 431 transitions, 5834 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:09,708 INFO L231 Difference]: Finished difference. Result has 239 places, 381 transitions, 4816 flow [2024-06-28 01:28:09,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4463, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4816, PETRI_PLACES=239, PETRI_TRANSITIONS=381} [2024-06-28 01:28:09,709 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 186 predicate places. [2024-06-28 01:28:09,709 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 381 transitions, 4816 flow [2024-06-28 01:28:09,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:09,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:09,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:09,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:28:09,710 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:09,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:09,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1988870552, now seen corresponding path program 1 times [2024-06-28 01:28:09,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:09,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964772272] [2024-06-28 01:28:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:09,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:10,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:10,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964772272] [2024-06-28 01:28:10,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964772272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:10,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:10,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:10,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221970793] [2024-06-28 01:28:10,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:10,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:10,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:10,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:10,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:10,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:10,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 381 transitions, 4816 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:28:10,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:10,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:10,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:12,744 INFO L124 PetriNetUnfolderBase]: 7826/12546 cut-off events. [2024-06-28 01:28:12,745 INFO L125 PetriNetUnfolderBase]: For 397358/397367 co-relation queries the response was YES. [2024-06-28 01:28:12,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79789 conditions, 12546 events. 7826/12546 cut-off events. For 397358/397367 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 83792 event pairs, 2111 based on Foata normal form. 9/12197 useless extension candidates. Maximal degree in co-relation 79681. Up to 10917 conditions per place. [2024-06-28 01:28:12,879 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 381 selfloop transitions, 50 changer transitions 0/439 dead transitions. [2024-06-28 01:28:12,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 439 transitions, 6259 flow [2024-06-28 01:28:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:12,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:28:12,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-28 01:28:12,880 INFO L175 Difference]: Start difference. First operand has 239 places, 381 transitions, 4816 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:28:12,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 439 transitions, 6259 flow [2024-06-28 01:28:13,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 439 transitions, 6186 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:13,573 INFO L231 Difference]: Finished difference. Result has 245 places, 399 transitions, 5132 flow [2024-06-28 01:28:13,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4743, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5132, PETRI_PLACES=245, PETRI_TRANSITIONS=399} [2024-06-28 01:28:13,574 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2024-06-28 01:28:13,574 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 399 transitions, 5132 flow [2024-06-28 01:28:13,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:28:13,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:13,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:13,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:28:13,574 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:13,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1983156632, now seen corresponding path program 2 times [2024-06-28 01:28:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:13,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162493710] [2024-06-28 01:28:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:13,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:14,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:14,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162493710] [2024-06-28 01:28:14,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162493710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:14,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:14,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:14,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303327222] [2024-06-28 01:28:14,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:14,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:14,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:14,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:14,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:14,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:14,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 399 transitions, 5132 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:14,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:14,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:14,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:16,433 INFO L124 PetriNetUnfolderBase]: 7863/12607 cut-off events. [2024-06-28 01:28:16,433 INFO L125 PetriNetUnfolderBase]: For 418860/418869 co-relation queries the response was YES. [2024-06-28 01:28:16,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82142 conditions, 12607 events. 7863/12607 cut-off events. For 418860/418869 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 84428 event pairs, 2114 based on Foata normal form. 9/12251 useless extension candidates. Maximal degree in co-relation 82030. Up to 10956 conditions per place. [2024-06-28 01:28:16,620 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 372 selfloop transitions, 60 changer transitions 0/440 dead transitions. [2024-06-28 01:28:16,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 440 transitions, 6464 flow [2024-06-28 01:28:16,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:28:16,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-28 01:28:16,621 INFO L175 Difference]: Start difference. First operand has 245 places, 399 transitions, 5132 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:28:16,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 440 transitions, 6464 flow [2024-06-28 01:28:17,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 440 transitions, 6354 flow, removed 54 selfloop flow, removed 1 redundant places. [2024-06-28 01:28:17,454 INFO L231 Difference]: Finished difference. Result has 251 places, 406 transitions, 5268 flow [2024-06-28 01:28:17,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5054, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5268, PETRI_PLACES=251, PETRI_TRANSITIONS=406} [2024-06-28 01:28:17,455 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 198 predicate places. [2024-06-28 01:28:17,455 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 406 transitions, 5268 flow [2024-06-28 01:28:17,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:17,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:17,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:17,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:28:17,455 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:17,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:17,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1347736844, now seen corresponding path program 1 times [2024-06-28 01:28:17,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:17,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958877961] [2024-06-28 01:28:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:17,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:18,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:18,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958877961] [2024-06-28 01:28:18,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958877961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:18,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:18,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:28:18,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648546649] [2024-06-28 01:28:18,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:18,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:28:18,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:18,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:28:18,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:28:18,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:18,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 406 transitions, 5268 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:18,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:18,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:18,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:21,309 INFO L124 PetriNetUnfolderBase]: 7805/12470 cut-off events. [2024-06-28 01:28:21,309 INFO L125 PetriNetUnfolderBase]: For 456830/456916 co-relation queries the response was YES. [2024-06-28 01:28:21,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83143 conditions, 12470 events. 7805/12470 cut-off events. For 456830/456916 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 82131 event pairs, 1874 based on Foata normal form. 30/12132 useless extension candidates. Maximal degree in co-relation 83028. Up to 9407 conditions per place. [2024-06-28 01:28:21,481 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 279 selfloop transitions, 184 changer transitions 0/495 dead transitions. [2024-06-28 01:28:21,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 495 transitions, 6850 flow [2024-06-28 01:28:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-28 01:28:21,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-28 01:28:21,482 INFO L175 Difference]: Start difference. First operand has 251 places, 406 transitions, 5268 flow. Second operand 10 states and 248 transitions. [2024-06-28 01:28:21,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 495 transitions, 6850 flow [2024-06-28 01:28:22,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 495 transitions, 6760 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:22,680 INFO L231 Difference]: Finished difference. Result has 260 places, 418 transitions, 5919 flow [2024-06-28 01:28:22,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5178, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5919, PETRI_PLACES=260, PETRI_TRANSITIONS=418} [2024-06-28 01:28:22,680 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 207 predicate places. [2024-06-28 01:28:22,680 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 418 transitions, 5919 flow [2024-06-28 01:28:22,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:22,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:22,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:22,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:28:22,681 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:22,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:22,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1983160600, now seen corresponding path program 2 times [2024-06-28 01:28:22,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:22,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770012295] [2024-06-28 01:28:22,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:22,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:23,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:23,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770012295] [2024-06-28 01:28:23,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770012295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:23,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:23,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:28:23,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681064684] [2024-06-28 01:28:23,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:23,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:28:23,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:28:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:28:23,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:23,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 418 transitions, 5919 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:23,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:23,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:23,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:26,155 INFO L124 PetriNetUnfolderBase]: 8031/13217 cut-off events. [2024-06-28 01:28:26,155 INFO L125 PetriNetUnfolderBase]: For 473615/473622 co-relation queries the response was YES. [2024-06-28 01:28:26,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87418 conditions, 13217 events. 8031/13217 cut-off events. For 473615/473622 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 91124 event pairs, 2226 based on Foata normal form. 8/12783 useless extension candidates. Maximal degree in co-relation 87300. Up to 11261 conditions per place. [2024-06-28 01:28:26,351 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 398 selfloop transitions, 58 changer transitions 0/464 dead transitions. [2024-06-28 01:28:26,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 464 transitions, 7130 flow [2024-06-28 01:28:26,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:26,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:26,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 01:28:26,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-28 01:28:26,353 INFO L175 Difference]: Start difference. First operand has 260 places, 418 transitions, 5919 flow. Second operand 8 states and 176 transitions. [2024-06-28 01:28:26,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 464 transitions, 7130 flow [2024-06-28 01:28:27,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 464 transitions, 6821 flow, removed 104 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:27,590 INFO L231 Difference]: Finished difference. Result has 266 places, 428 transitions, 5908 flow [2024-06-28 01:28:27,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5610, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5908, PETRI_PLACES=266, PETRI_TRANSITIONS=428} [2024-06-28 01:28:27,591 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 213 predicate places. [2024-06-28 01:28:27,591 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 428 transitions, 5908 flow [2024-06-28 01:28:27,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:27,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:27,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:27,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:28:27,592 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:27,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1832697102, now seen corresponding path program 3 times [2024-06-28 01:28:27,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:27,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694017028] [2024-06-28 01:28:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:27,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:28,250 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 01:28:28,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:28,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694017028] [2024-06-28 01:28:28,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694017028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:28,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:28,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:28,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546112860] [2024-06-28 01:28:28,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:28,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:28,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:28,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:28,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:28,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:28,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 428 transitions, 5908 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:28:28,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:28,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:28,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:30,616 INFO L124 PetriNetUnfolderBase]: 8028/12599 cut-off events. [2024-06-28 01:28:30,616 INFO L125 PetriNetUnfolderBase]: For 465735/465735 co-relation queries the response was YES. [2024-06-28 01:28:30,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86627 conditions, 12599 events. 8028/12599 cut-off events. For 465735/465735 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 82359 event pairs, 2362 based on Foata normal form. 1/12324 useless extension candidates. Maximal degree in co-relation 86506. Up to 11389 conditions per place. [2024-06-28 01:28:30,828 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 419 selfloop transitions, 31 changer transitions 0/458 dead transitions. [2024-06-28 01:28:30,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 458 transitions, 7035 flow [2024-06-28 01:28:30,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:30,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 01:28:30,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416413373860183 [2024-06-28 01:28:30,829 INFO L175 Difference]: Start difference. First operand has 266 places, 428 transitions, 5908 flow. Second operand 7 states and 156 transitions. [2024-06-28 01:28:30,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 458 transitions, 7035 flow [2024-06-28 01:28:31,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 458 transitions, 6839 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:31,909 INFO L231 Difference]: Finished difference. Result has 268 places, 428 transitions, 5782 flow [2024-06-28 01:28:31,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5712, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5782, PETRI_PLACES=268, PETRI_TRANSITIONS=428} [2024-06-28 01:28:31,910 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 215 predicate places. [2024-06-28 01:28:31,910 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 428 transitions, 5782 flow [2024-06-28 01:28:31,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:28:31,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:31,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:31,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:28:31,911 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:31,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1820346702, now seen corresponding path program 4 times [2024-06-28 01:28:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:31,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51846276] [2024-06-28 01:28:31,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:31,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:32,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:32,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51846276] [2024-06-28 01:28:32,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51846276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:32,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:32,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:32,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998503334] [2024-06-28 01:28:32,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:32,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:32,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:32,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:32,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:32,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:28:32,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 428 transitions, 5782 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:28:32,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:32,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:28:32,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:34,973 INFO L124 PetriNetUnfolderBase]: 8045/12624 cut-off events. [2024-06-28 01:28:34,973 INFO L125 PetriNetUnfolderBase]: For 475767/475767 co-relation queries the response was YES. [2024-06-28 01:28:35,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86633 conditions, 12624 events. 8045/12624 cut-off events. For 475767/475767 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 82543 event pairs, 2392 based on Foata normal form. 1/12348 useless extension candidates. Maximal degree in co-relation 86511. Up to 11455 conditions per place. [2024-06-28 01:28:35,201 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 421 selfloop transitions, 25 changer transitions 0/454 dead transitions. [2024-06-28 01:28:35,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 454 transitions, 6819 flow [2024-06-28 01:28:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 01:28:35,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45592705167173253 [2024-06-28 01:28:35,202 INFO L175 Difference]: Start difference. First operand has 268 places, 428 transitions, 5782 flow. Second operand 7 states and 150 transitions. [2024-06-28 01:28:35,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 454 transitions, 6819 flow [2024-06-28 01:28:36,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 454 transitions, 6708 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:36,142 INFO L231 Difference]: Finished difference. Result has 270 places, 432 transitions, 5802 flow [2024-06-28 01:28:36,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5690, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5802, PETRI_PLACES=270, PETRI_TRANSITIONS=432} [2024-06-28 01:28:36,143 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 217 predicate places. [2024-06-28 01:28:36,143 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 432 transitions, 5802 flow [2024-06-28 01:28:36,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:28:36,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:36,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:36,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:28:36,143 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:36,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:36,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1404092710, now seen corresponding path program 2 times [2024-06-28 01:28:36,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:36,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142596738] [2024-06-28 01:28:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:36,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:37,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:37,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142596738] [2024-06-28 01:28:37,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142596738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:37,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:37,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:28:37,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562380085] [2024-06-28 01:28:37,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:37,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:28:37,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:37,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:28:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:28:37,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:37,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 432 transitions, 5802 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:37,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:37,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:37,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:40,122 INFO L124 PetriNetUnfolderBase]: 7886/12527 cut-off events. [2024-06-28 01:28:40,122 INFO L125 PetriNetUnfolderBase]: For 512505/512575 co-relation queries the response was YES. [2024-06-28 01:28:40,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87201 conditions, 12527 events. 7886/12527 cut-off events. For 512505/512575 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 83482 event pairs, 2100 based on Foata normal form. 22/12233 useless extension candidates. Maximal degree in co-relation 87080. Up to 10436 conditions per place. [2024-06-28 01:28:40,341 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 395 selfloop transitions, 86 changer transitions 0/517 dead transitions. [2024-06-28 01:28:40,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 517 transitions, 7311 flow [2024-06-28 01:28:40,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-28 01:28:40,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2024-06-28 01:28:40,342 INFO L175 Difference]: Start difference. First operand has 270 places, 432 transitions, 5802 flow. Second operand 10 states and 241 transitions. [2024-06-28 01:28:40,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 517 transitions, 7311 flow [2024-06-28 01:28:41,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 517 transitions, 7245 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:41,551 INFO L231 Difference]: Finished difference. Result has 278 places, 439 transitions, 6142 flow [2024-06-28 01:28:41,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5736, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6142, PETRI_PLACES=278, PETRI_TRANSITIONS=439} [2024-06-28 01:28:41,552 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 225 predicate places. [2024-06-28 01:28:41,552 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 439 transitions, 6142 flow [2024-06-28 01:28:41,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:41,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:41,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:41,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:28:41,553 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:41,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:41,554 INFO L85 PathProgramCache]: Analyzing trace with hash -300309344, now seen corresponding path program 3 times [2024-06-28 01:28:41,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:41,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919491911] [2024-06-28 01:28:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:41,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:42,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:42,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919491911] [2024-06-28 01:28:42,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919491911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:42,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:42,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:28:42,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477411330] [2024-06-28 01:28:42,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:42,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:28:42,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:42,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:28:42,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:28:43,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:43,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 439 transitions, 6142 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:43,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:43,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:43,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:45,858 INFO L124 PetriNetUnfolderBase]: 7979/12704 cut-off events. [2024-06-28 01:28:45,858 INFO L125 PetriNetUnfolderBase]: For 550291/550361 co-relation queries the response was YES. [2024-06-28 01:28:46,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90415 conditions, 12704 events. 7979/12704 cut-off events. For 550291/550361 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 85132 event pairs, 2256 based on Foata normal form. 22/12403 useless extension candidates. Maximal degree in co-relation 90291. Up to 10690 conditions per place. [2024-06-28 01:28:46,086 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 414 selfloop transitions, 63 changer transitions 0/513 dead transitions. [2024-06-28 01:28:46,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 513 transitions, 7480 flow [2024-06-28 01:28:46,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-28 01:28:46,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085106382978724 [2024-06-28 01:28:46,087 INFO L175 Difference]: Start difference. First operand has 278 places, 439 transitions, 6142 flow. Second operand 10 states and 239 transitions. [2024-06-28 01:28:46,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 513 transitions, 7480 flow [2024-06-28 01:28:47,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 513 transitions, 7253 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:47,431 INFO L231 Difference]: Finished difference. Result has 283 places, 440 transitions, 6105 flow [2024-06-28 01:28:47,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5915, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6105, PETRI_PLACES=283, PETRI_TRANSITIONS=440} [2024-06-28 01:28:47,432 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 230 predicate places. [2024-06-28 01:28:47,432 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 440 transitions, 6105 flow [2024-06-28 01:28:47,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:47,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:47,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:47,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:28:47,433 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:47,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1231372180, now seen corresponding path program 4 times [2024-06-28 01:28:47,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:47,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328779877] [2024-06-28 01:28:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:47,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:48,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:48,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:48,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328779877] [2024-06-28 01:28:48,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328779877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:48,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:48,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:28:48,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003093882] [2024-06-28 01:28:48,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:48,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:28:48,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:48,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:28:48,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:28:48,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:48,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 440 transitions, 6105 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:48,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:48,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:48,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:51,473 INFO L124 PetriNetUnfolderBase]: 8072/12855 cut-off events. [2024-06-28 01:28:51,473 INFO L125 PetriNetUnfolderBase]: For 566275/566345 co-relation queries the response was YES. [2024-06-28 01:28:51,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91587 conditions, 12855 events. 8072/12855 cut-off events. For 566275/566345 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 86297 event pairs, 2232 based on Foata normal form. 22/12553 useless extension candidates. Maximal degree in co-relation 91461. Up to 10712 conditions per place. [2024-06-28 01:28:51,678 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 406 selfloop transitions, 68 changer transitions 0/510 dead transitions. [2024-06-28 01:28:51,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 510 transitions, 7413 flow [2024-06-28 01:28:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-28 01:28:51,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085106382978724 [2024-06-28 01:28:51,679 INFO L175 Difference]: Start difference. First operand has 283 places, 440 transitions, 6105 flow. Second operand 10 states and 239 transitions. [2024-06-28 01:28:51,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 510 transitions, 7413 flow [2024-06-28 01:28:52,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 510 transitions, 7239 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:52,880 INFO L231 Difference]: Finished difference. Result has 285 places, 441 transitions, 6133 flow [2024-06-28 01:28:52,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5931, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6133, PETRI_PLACES=285, PETRI_TRANSITIONS=441} [2024-06-28 01:28:52,881 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 232 predicate places. [2024-06-28 01:28:52,881 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 441 transitions, 6133 flow [2024-06-28 01:28:52,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:52,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:52,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:52,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:28:52,881 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:52,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 107191966, now seen corresponding path program 5 times [2024-06-28 01:28:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:52,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195504448] [2024-06-28 01:28:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:54,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:54,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195504448] [2024-06-28 01:28:54,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195504448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:54,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:54,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:28:54,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004034369] [2024-06-28 01:28:54,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:54,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:28:54,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:54,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:28:54,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:28:54,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:54,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 441 transitions, 6133 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:54,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:54,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:54,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:56,902 INFO L124 PetriNetUnfolderBase]: 8165/13072 cut-off events. [2024-06-28 01:28:56,902 INFO L125 PetriNetUnfolderBase]: For 581956/582026 co-relation queries the response was YES. [2024-06-28 01:28:57,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92678 conditions, 13072 events. 8165/13072 cut-off events. For 581956/582026 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 88573 event pairs, 2266 based on Foata normal form. 22/12749 useless extension candidates. Maximal degree in co-relation 92551. Up to 11108 conditions per place. [2024-06-28 01:28:57,111 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 432 selfloop transitions, 45 changer transitions 0/513 dead transitions. [2024-06-28 01:28:57,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 513 transitions, 7457 flow [2024-06-28 01:28:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:28:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:28:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-06-28 01:28:57,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042553191489362 [2024-06-28 01:28:57,113 INFO L175 Difference]: Start difference. First operand has 285 places, 441 transitions, 6133 flow. Second operand 10 states and 237 transitions. [2024-06-28 01:28:57,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 513 transitions, 7457 flow [2024-06-28 01:28:58,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 513 transitions, 7271 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:58,259 INFO L231 Difference]: Finished difference. Result has 287 places, 442 transitions, 6106 flow [2024-06-28 01:28:58,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5947, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6106, PETRI_PLACES=287, PETRI_TRANSITIONS=442} [2024-06-28 01:28:58,259 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 234 predicate places. [2024-06-28 01:28:58,259 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 442 transitions, 6106 flow [2024-06-28 01:28:58,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:58,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:58,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:58,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:28:58,260 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:58,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash 113678716, now seen corresponding path program 6 times [2024-06-28 01:28:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:58,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940992742] [2024-06-28 01:28:58,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:59,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:59,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940992742] [2024-06-28 01:28:59,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940992742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:59,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:59,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:28:59,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632442171] [2024-06-28 01:28:59,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:59,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:28:59,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:59,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:28:59,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:28:59,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:28:59,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 442 transitions, 6106 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:59,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:59,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:28:59,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:02,281 INFO L124 PetriNetUnfolderBase]: 8258/13243 cut-off events. [2024-06-28 01:29:02,282 INFO L125 PetriNetUnfolderBase]: For 600734/600804 co-relation queries the response was YES. [2024-06-28 01:29:02,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93474 conditions, 13243 events. 8258/13243 cut-off events. For 600734/600804 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 90130 event pairs, 2371 based on Foata normal form. 22/12915 useless extension candidates. Maximal degree in co-relation 93346. Up to 11294 conditions per place. [2024-06-28 01:29:02,529 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 434 selfloop transitions, 35 changer transitions 0/505 dead transitions. [2024-06-28 01:29:02,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 505 transitions, 7362 flow [2024-06-28 01:29:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:02,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 234 transitions. [2024-06-28 01:29:02,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-28 01:29:02,532 INFO L175 Difference]: Start difference. First operand has 287 places, 442 transitions, 6106 flow. Second operand 10 states and 234 transitions. [2024-06-28 01:29:02,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 505 transitions, 7362 flow [2024-06-28 01:29:04,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 505 transitions, 7221 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 01:29:04,144 INFO L231 Difference]: Finished difference. Result has 289 places, 443 transitions, 6105 flow [2024-06-28 01:29:04,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5965, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6105, PETRI_PLACES=289, PETRI_TRANSITIONS=443} [2024-06-28 01:29:04,145 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 236 predicate places. [2024-06-28 01:29:04,145 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 443 transitions, 6105 flow [2024-06-28 01:29:04,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:04,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:04,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:04,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:29:04,146 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:04,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:04,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1592426814, now seen corresponding path program 7 times [2024-06-28 01:29:04,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:04,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205548087] [2024-06-28 01:29:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:04,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:05,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:05,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205548087] [2024-06-28 01:29:05,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205548087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:05,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:05,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:29:05,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879331723] [2024-06-28 01:29:05,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:05,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:29:05,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:05,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:29:05,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:29:05,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:29:05,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 443 transitions, 6105 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:05,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:05,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:29:05,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:08,505 INFO L124 PetriNetUnfolderBase]: 8367/13463 cut-off events. [2024-06-28 01:29:08,505 INFO L125 PetriNetUnfolderBase]: For 621279/621349 co-relation queries the response was YES. [2024-06-28 01:29:08,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94808 conditions, 13463 events. 8367/13463 cut-off events. For 621279/621349 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 92306 event pairs, 2333 based on Foata normal form. 22/13120 useless extension candidates. Maximal degree in co-relation 94679. Up to 11546 conditions per place. [2024-06-28 01:29:08,667 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 441 selfloop transitions, 33 changer transitions 0/510 dead transitions. [2024-06-28 01:29:08,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 510 transitions, 7539 flow [2024-06-28 01:29:08,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:08,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-28 01:29:08,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:29:08,668 INFO L175 Difference]: Start difference. First operand has 289 places, 443 transitions, 6105 flow. Second operand 10 states and 235 transitions. [2024-06-28 01:29:08,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 510 transitions, 7539 flow [2024-06-28 01:29:09,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 510 transitions, 7415 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 01:29:09,993 INFO L231 Difference]: Finished difference. Result has 293 places, 448 transitions, 6316 flow [2024-06-28 01:29:09,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5981, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6316, PETRI_PLACES=293, PETRI_TRANSITIONS=448} [2024-06-28 01:29:09,993 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 240 predicate places. [2024-06-28 01:29:09,994 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 448 transitions, 6316 flow [2024-06-28 01:29:09,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:09,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:09,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:09,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:29:09,994 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:09,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:09,995 INFO L85 PathProgramCache]: Analyzing trace with hash 745356752, now seen corresponding path program 8 times [2024-06-28 01:29:09,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:09,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024336714] [2024-06-28 01:29:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:09,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:11,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:11,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024336714] [2024-06-28 01:29:11,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024336714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:11,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:11,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:29:11,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282969366] [2024-06-28 01:29:11,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:11,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:29:11,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:11,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:29:11,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:29:11,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:29:11,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 448 transitions, 6316 flow. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:11,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:11,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:29:11,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:14,568 INFO L124 PetriNetUnfolderBase]: 8367/13400 cut-off events. [2024-06-28 01:29:14,568 INFO L125 PetriNetUnfolderBase]: For 616536/616606 co-relation queries the response was YES. [2024-06-28 01:29:14,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94215 conditions, 13400 events. 8367/13400 cut-off events. For 616536/616606 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 91308 event pairs, 2298 based on Foata normal form. 22/13075 useless extension candidates. Maximal degree in co-relation 94083. Up to 11154 conditions per place. [2024-06-28 01:29:14,799 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 427 selfloop transitions, 52 changer transitions 0/515 dead transitions. [2024-06-28 01:29:14,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 515 transitions, 7540 flow [2024-06-28 01:29:14,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:14,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:14,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-06-28 01:29:14,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042553191489362 [2024-06-28 01:29:14,800 INFO L175 Difference]: Start difference. First operand has 293 places, 448 transitions, 6316 flow. Second operand 10 states and 237 transitions. [2024-06-28 01:29:14,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 515 transitions, 7540 flow [2024-06-28 01:29:16,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 515 transitions, 7288 flow, removed 111 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:16,188 INFO L231 Difference]: Finished difference. Result has 297 places, 448 transitions, 6158 flow [2024-06-28 01:29:16,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5980, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6158, PETRI_PLACES=297, PETRI_TRANSITIONS=448} [2024-06-28 01:29:16,189 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 244 predicate places. [2024-06-28 01:29:16,189 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 448 transitions, 6158 flow [2024-06-28 01:29:16,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:16,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:16,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:16,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:29:16,189 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:16,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:16,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1117939396, now seen corresponding path program 5 times [2024-06-28 01:29:16,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:16,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563106705] [2024-06-28 01:29:16,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:16,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:16,812 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 01:29:16,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:16,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563106705] [2024-06-28 01:29:16,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563106705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:16,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:16,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:16,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954202386] [2024-06-28 01:29:16,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:16,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:16,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:16,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:16,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:16,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:16,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 448 transitions, 6158 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:29:16,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:16,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:16,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:19,387 INFO L124 PetriNetUnfolderBase]: 8634/13697 cut-off events. [2024-06-28 01:29:19,388 INFO L125 PetriNetUnfolderBase]: For 591431/591434 co-relation queries the response was YES. [2024-06-28 01:29:19,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94705 conditions, 13697 events. 8634/13697 cut-off events. For 591431/591434 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 92111 event pairs, 2635 based on Foata normal form. 3/13386 useless extension candidates. Maximal degree in co-relation 94571. Up to 12383 conditions per place. [2024-06-28 01:29:19,617 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 434 selfloop transitions, 25 changer transitions 0/467 dead transitions. [2024-06-28 01:29:19,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 467 transitions, 7142 flow [2024-06-28 01:29:19,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-28 01:29:19,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44376899696048633 [2024-06-28 01:29:19,619 INFO L175 Difference]: Start difference. First operand has 297 places, 448 transitions, 6158 flow. Second operand 7 states and 146 transitions. [2024-06-28 01:29:19,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 467 transitions, 7142 flow [2024-06-28 01:29:21,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 467 transitions, 6958 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 01:29:21,316 INFO L231 Difference]: Finished difference. Result has 296 places, 448 transitions, 6030 flow [2024-06-28 01:29:21,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5974, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6030, PETRI_PLACES=296, PETRI_TRANSITIONS=448} [2024-06-28 01:29:21,317 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 243 predicate places. [2024-06-28 01:29:21,317 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 448 transitions, 6030 flow [2024-06-28 01:29:21,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:29:21,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:21,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:21,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:29:21,317 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:21,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:21,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1295643176, now seen corresponding path program 6 times [2024-06-28 01:29:21,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:21,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654569316] [2024-06-28 01:29:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:21,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:21,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:21,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654569316] [2024-06-28 01:29:21,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654569316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:21,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:21,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:21,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461298497] [2024-06-28 01:29:21,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:21,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:21,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:21,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:21,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:22,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:22,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 448 transitions, 6030 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:29:22,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:22,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:22,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:24,564 INFO L124 PetriNetUnfolderBase]: 8631/13689 cut-off events. [2024-06-28 01:29:24,564 INFO L125 PetriNetUnfolderBase]: For 567794/567797 co-relation queries the response was YES. [2024-06-28 01:29:24,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93118 conditions, 13689 events. 8631/13689 cut-off events. For 567794/567797 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 92034 event pairs, 2629 based on Foata normal form. 3/13379 useless extension candidates. Maximal degree in co-relation 92983. Up to 12350 conditions per place. [2024-06-28 01:29:24,809 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 428 selfloop transitions, 33 changer transitions 0/469 dead transitions. [2024-06-28 01:29:24,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 469 transitions, 7036 flow [2024-06-28 01:29:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:24,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:24,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-28 01:29:24,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44984802431610943 [2024-06-28 01:29:24,810 INFO L175 Difference]: Start difference. First operand has 296 places, 448 transitions, 6030 flow. Second operand 7 states and 148 transitions. [2024-06-28 01:29:24,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 469 transitions, 7036 flow [2024-06-28 01:29:26,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 469 transitions, 6957 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:26,381 INFO L231 Difference]: Finished difference. Result has 298 places, 448 transitions, 6023 flow [2024-06-28 01:29:26,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5951, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6023, PETRI_PLACES=298, PETRI_TRANSITIONS=448} [2024-06-28 01:29:26,381 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 245 predicate places. [2024-06-28 01:29:26,381 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 448 transitions, 6023 flow [2024-06-28 01:29:26,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 01:29:26,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:26,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:26,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:29:26,382 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:26,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1295639208, now seen corresponding path program 3 times [2024-06-28 01:29:26,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:26,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366118882] [2024-06-28 01:29:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:26,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:27,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:27,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366118882] [2024-06-28 01:29:27,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366118882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:27,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:27,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:27,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281107110] [2024-06-28 01:29:27,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:27,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:27,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:27,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:27,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:27,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:27,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 448 transitions, 6023 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:27,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:27,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:27,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:30,058 INFO L124 PetriNetUnfolderBase]: 8643/13700 cut-off events. [2024-06-28 01:29:30,058 INFO L125 PetriNetUnfolderBase]: For 578840/578840 co-relation queries the response was YES. [2024-06-28 01:29:30,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93423 conditions, 13700 events. 8643/13700 cut-off events. For 578840/578840 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 92077 event pairs, 2583 based on Foata normal form. 1/13390 useless extension candidates. Maximal degree in co-relation 93287. Up to 12386 conditions per place. [2024-06-28 01:29:30,384 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 444 selfloop transitions, 33 changer transitions 0/485 dead transitions. [2024-06-28 01:29:30,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 485 transitions, 7283 flow [2024-06-28 01:29:30,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:30,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-28 01:29:30,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44148936170212766 [2024-06-28 01:29:30,386 INFO L175 Difference]: Start difference. First operand has 298 places, 448 transitions, 6023 flow. Second operand 8 states and 166 transitions. [2024-06-28 01:29:30,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 485 transitions, 7283 flow [2024-06-28 01:29:31,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 485 transitions, 7145 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:31,871 INFO L231 Difference]: Finished difference. Result has 302 places, 457 transitions, 6179 flow [2024-06-28 01:29:31,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5885, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6179, PETRI_PLACES=302, PETRI_TRANSITIONS=457} [2024-06-28 01:29:31,871 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 249 predicate places. [2024-06-28 01:29:31,872 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 457 transitions, 6179 flow [2024-06-28 01:29:31,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:31,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:31,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:31,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:29:31,872 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:31,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:31,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1309906152, now seen corresponding path program 1 times [2024-06-28 01:29:31,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:31,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881487041] [2024-06-28 01:29:31,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:31,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:32,751 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 01:29:32,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:32,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881487041] [2024-06-28 01:29:32,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881487041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:32,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:32,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468892383] [2024-06-28 01:29:32,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:32,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:32,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:32,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:29:32,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 457 transitions, 6179 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 01:29:32,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:32,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:29:32,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:35,485 INFO L124 PetriNetUnfolderBase]: 8015/12686 cut-off events. [2024-06-28 01:29:35,486 INFO L125 PetriNetUnfolderBase]: For 593360/593677 co-relation queries the response was YES. [2024-06-28 01:29:35,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88277 conditions, 12686 events. 8015/12686 cut-off events. For 593360/593677 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 85003 event pairs, 2321 based on Foata normal form. 203/12535 useless extension candidates. Maximal degree in co-relation 88138. Up to 11314 conditions per place. [2024-06-28 01:29:35,739 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 425 selfloop transitions, 22 changer transitions 0/488 dead transitions. [2024-06-28 01:29:35,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 488 transitions, 7251 flow [2024-06-28 01:29:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-28 01:29:35,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478723404255317 [2024-06-28 01:29:35,740 INFO L175 Difference]: Start difference. First operand has 302 places, 457 transitions, 6179 flow. Second operand 8 states and 171 transitions. [2024-06-28 01:29:35,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 488 transitions, 7251 flow [2024-06-28 01:29:37,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 488 transitions, 7079 flow, removed 77 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:37,455 INFO L231 Difference]: Finished difference. Result has 308 places, 464 transitions, 6176 flow [2024-06-28 01:29:37,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6007, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6176, PETRI_PLACES=308, PETRI_TRANSITIONS=464} [2024-06-28 01:29:37,455 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 255 predicate places. [2024-06-28 01:29:37,455 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 464 transitions, 6176 flow [2024-06-28 01:29:37,455 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 01:29:37,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:37,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:37,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:29:37,456 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:37,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash -987644982, now seen corresponding path program 4 times [2024-06-28 01:29:37,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:37,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674295419] [2024-06-28 01:29:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:37,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:39,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:39,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674295419] [2024-06-28 01:29:39,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674295419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:39,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:39,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:39,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470882581] [2024-06-28 01:29:39,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:39,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:39,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:39,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:39,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:39,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:39,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 464 transitions, 6176 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:39,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:39,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:39,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:42,914 INFO L124 PetriNetUnfolderBase]: 9135/14870 cut-off events. [2024-06-28 01:29:42,914 INFO L125 PetriNetUnfolderBase]: For 624483/624492 co-relation queries the response was YES. [2024-06-28 01:29:43,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101297 conditions, 14870 events. 9135/14870 cut-off events. For 624483/624492 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 104127 event pairs, 2480 based on Foata normal form. 9/14445 useless extension candidates. Maximal degree in co-relation 101155. Up to 12655 conditions per place. [2024-06-28 01:29:43,234 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 492 selfloop transitions, 152 changer transitions 0/652 dead transitions. [2024-06-28 01:29:43,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 652 transitions, 9427 flow [2024-06-28 01:29:43,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:29:43,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:29:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 270 transitions. [2024-06-28 01:29:43,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-06-28 01:29:43,236 INFO L175 Difference]: Start difference. First operand has 308 places, 464 transitions, 6176 flow. Second operand 12 states and 270 transitions. [2024-06-28 01:29:43,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 652 transitions, 9427 flow [2024-06-28 01:29:45,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 652 transitions, 9318 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:45,127 INFO L231 Difference]: Finished difference. Result has 321 places, 585 transitions, 8091 flow [2024-06-28 01:29:45,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6067, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8091, PETRI_PLACES=321, PETRI_TRANSITIONS=585} [2024-06-28 01:29:45,128 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 268 predicate places. [2024-06-28 01:29:45,128 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 585 transitions, 8091 flow [2024-06-28 01:29:45,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:45,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:45,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:45,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:29:45,129 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:45,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash 426174144, now seen corresponding path program 5 times [2024-06-28 01:29:45,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:45,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514859455] [2024-06-28 01:29:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:45,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:46,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:46,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514859455] [2024-06-28 01:29:46,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514859455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:46,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:46,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:46,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092872773] [2024-06-28 01:29:46,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:46,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:46,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:46,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:46,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:46,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:46,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 585 transitions, 8091 flow. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:46,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:46,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:46,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:51,253 INFO L124 PetriNetUnfolderBase]: 9401/15316 cut-off events. [2024-06-28 01:29:51,254 INFO L125 PetriNetUnfolderBase]: For 662457/662466 co-relation queries the response was YES. [2024-06-28 01:29:51,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108853 conditions, 15316 events. 9401/15316 cut-off events. For 662457/662466 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 107981 event pairs, 2518 based on Foata normal form. 9/14873 useless extension candidates. Maximal degree in co-relation 108704. Up to 13057 conditions per place. [2024-06-28 01:29:51,474 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 559 selfloop transitions, 167 changer transitions 0/734 dead transitions. [2024-06-28 01:29:51,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 734 transitions, 11549 flow [2024-06-28 01:29:51,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 01:29:51,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491725768321513 [2024-06-28 01:29:51,475 INFO L175 Difference]: Start difference. First operand has 321 places, 585 transitions, 8091 flow. Second operand 9 states and 208 transitions. [2024-06-28 01:29:51,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 734 transitions, 11549 flow [2024-06-28 01:29:53,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 734 transitions, 11242 flow, removed 148 selfloop flow, removed 2 redundant places. [2024-06-28 01:29:53,843 INFO L231 Difference]: Finished difference. Result has 331 places, 682 transitions, 9946 flow [2024-06-28 01:29:53,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7946, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9946, PETRI_PLACES=331, PETRI_TRANSITIONS=682} [2024-06-28 01:29:53,844 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 278 predicate places. [2024-06-28 01:29:53,844 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 682 transitions, 9946 flow [2024-06-28 01:29:53,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:53,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:53,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:53,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:29:53,844 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:53,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1948250806, now seen corresponding path program 6 times [2024-06-28 01:29:53,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:53,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857857659] [2024-06-28 01:29:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:53,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:54,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:54,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857857659] [2024-06-28 01:29:54,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857857659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:54,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:54,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:54,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059014437] [2024-06-28 01:29:54,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:54,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:54,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:54,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:54,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:54,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:29:54,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 682 transitions, 9946 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:54,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:54,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:29:54,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:59,038 INFO L124 PetriNetUnfolderBase]: 9491/15460 cut-off events. [2024-06-28 01:29:59,038 INFO L125 PetriNetUnfolderBase]: For 693819/693821 co-relation queries the response was YES. [2024-06-28 01:29:59,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112545 conditions, 15460 events. 9491/15460 cut-off events. For 693819/693821 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 109089 event pairs, 2495 based on Foata normal form. 4/15006 useless extension candidates. Maximal degree in co-relation 112391. Up to 12825 conditions per place. [2024-06-28 01:29:59,291 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 466 selfloop transitions, 287 changer transitions 0/761 dead transitions. [2024-06-28 01:29:59,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 761 transitions, 12427 flow [2024-06-28 01:29:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:29:59,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-28 01:29:59,292 INFO L175 Difference]: Start difference. First operand has 331 places, 682 transitions, 9946 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:29:59,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 761 transitions, 12427 flow [2024-06-28 01:30:01,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 761 transitions, 12238 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-28 01:30:01,498 INFO L231 Difference]: Finished difference. Result has 339 places, 718 transitions, 11253 flow [2024-06-28 01:30:01,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9757, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11253, PETRI_PLACES=339, PETRI_TRANSITIONS=718} [2024-06-28 01:30:01,499 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 286 predicate places. [2024-06-28 01:30:01,499 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 718 transitions, 11253 flow [2024-06-28 01:30:01,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:01,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:01,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:01,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:30:01,499 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:01,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:01,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1142678424, now seen corresponding path program 7 times [2024-06-28 01:30:01,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:01,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502942603] [2024-06-28 01:30:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:01,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:02,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:02,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502942603] [2024-06-28 01:30:02,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502942603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:02,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:02,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:02,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744498335] [2024-06-28 01:30:02,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:02,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:02,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:02,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:02,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:02,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:30:02,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 718 transitions, 11253 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:02,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:02,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:30:02,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:07,043 INFO L124 PetriNetUnfolderBase]: 9488/15467 cut-off events. [2024-06-28 01:30:07,043 INFO L125 PetriNetUnfolderBase]: For 721666/721677 co-relation queries the response was YES. [2024-06-28 01:30:07,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116261 conditions, 15467 events. 9488/15467 cut-off events. For 721666/721677 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 109303 event pairs, 2511 based on Foata normal form. 11/15018 useless extension candidates. Maximal degree in co-relation 116103. Up to 13088 conditions per place. [2024-06-28 01:30:07,474 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 541 selfloop transitions, 222 changer transitions 0/771 dead transitions. [2024-06-28 01:30:07,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 771 transitions, 13140 flow [2024-06-28 01:30:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:07,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:07,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 227 transitions. [2024-06-28 01:30:07,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4829787234042553 [2024-06-28 01:30:07,476 INFO L175 Difference]: Start difference. First operand has 339 places, 718 transitions, 11253 flow. Second operand 10 states and 227 transitions. [2024-06-28 01:30:07,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 771 transitions, 13140 flow [2024-06-28 01:30:09,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 771 transitions, 12874 flow, removed 106 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:09,461 INFO L231 Difference]: Finished difference. Result has 346 places, 719 transitions, 11575 flow [2024-06-28 01:30:09,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11005, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11575, PETRI_PLACES=346, PETRI_TRANSITIONS=719} [2024-06-28 01:30:09,461 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 293 predicate places. [2024-06-28 01:30:09,462 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 719 transitions, 11575 flow [2024-06-28 01:30:09,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:09,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:09,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:09,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:30:09,462 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:09,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash 106034734, now seen corresponding path program 1 times [2024-06-28 01:30:09,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:09,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086509508] [2024-06-28 01:30:09,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:09,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:10,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:10,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:10,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086509508] [2024-06-28 01:30:10,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086509508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:10,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:10,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:10,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25599409] [2024-06-28 01:30:10,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:10,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:10,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:10,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:10,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:10,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:30:10,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 719 transitions, 11575 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:10,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:10,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:30:10,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:14,832 INFO L124 PetriNetUnfolderBase]: 9590/15645 cut-off events. [2024-06-28 01:30:14,832 INFO L125 PetriNetUnfolderBase]: For 688894/688894 co-relation queries the response was YES. [2024-06-28 01:30:15,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113808 conditions, 15645 events. 9590/15645 cut-off events. For 688894/688894 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 111002 event pairs, 2668 based on Foata normal form. 6/15180 useless extension candidates. Maximal degree in co-relation 113649. Up to 13567 conditions per place. [2024-06-28 01:30:15,105 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 727 selfloop transitions, 26 changer transitions 0/761 dead transitions. [2024-06-28 01:30:15,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 761 transitions, 13357 flow [2024-06-28 01:30:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 01:30:15,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47074468085106386 [2024-06-28 01:30:15,106 INFO L175 Difference]: Start difference. First operand has 346 places, 719 transitions, 11575 flow. Second operand 8 states and 177 transitions. [2024-06-28 01:30:15,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 761 transitions, 13357 flow [2024-06-28 01:30:17,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 761 transitions, 13104 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:17,463 INFO L231 Difference]: Finished difference. Result has 350 places, 722 transitions, 11438 flow [2024-06-28 01:30:17,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11322, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11438, PETRI_PLACES=350, PETRI_TRANSITIONS=722} [2024-06-28 01:30:17,464 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 297 predicate places. [2024-06-28 01:30:17,464 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 722 transitions, 11438 flow [2024-06-28 01:30:17,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:17,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:17,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:17,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:30:17,466 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:17,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:17,466 INFO L85 PathProgramCache]: Analyzing trace with hash 918646658, now seen corresponding path program 2 times [2024-06-28 01:30:17,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:17,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723811303] [2024-06-28 01:30:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:17,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:18,346 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 01:30:18,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:18,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723811303] [2024-06-28 01:30:18,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723811303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:18,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:18,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423594754] [2024-06-28 01:30:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:18,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:18,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:18,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-28 01:30:18,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 722 transitions, 11438 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:18,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:18,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-28 01:30:18,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:22,783 INFO L124 PetriNetUnfolderBase]: 9812/15969 cut-off events. [2024-06-28 01:30:22,783 INFO L125 PetriNetUnfolderBase]: For 726110/726110 co-relation queries the response was YES. [2024-06-28 01:30:22,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116798 conditions, 15969 events. 9812/15969 cut-off events. For 726110/726110 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 113276 event pairs, 2633 based on Foata normal form. 6/15498 useless extension candidates. Maximal degree in co-relation 116638. Up to 13326 conditions per place. [2024-06-28 01:30:23,048 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 711 selfloop transitions, 60 changer transitions 0/779 dead transitions. [2024-06-28 01:30:23,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 779 transitions, 13698 flow [2024-06-28 01:30:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:30:23,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-28 01:30:23,049 INFO L175 Difference]: Start difference. First operand has 350 places, 722 transitions, 11438 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:30:23,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 779 transitions, 13698 flow [2024-06-28 01:30:25,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 779 transitions, 13604 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:25,482 INFO L231 Difference]: Finished difference. Result has 352 places, 731 transitions, 11650 flow [2024-06-28 01:30:25,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11344, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11650, PETRI_PLACES=352, PETRI_TRANSITIONS=731} [2024-06-28 01:30:25,483 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 299 predicate places. [2024-06-28 01:30:25,483 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 731 transitions, 11650 flow [2024-06-28 01:30:25,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:25,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:25,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:25,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:30:25,484 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:25,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:25,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1820332070, now seen corresponding path program 3 times [2024-06-28 01:30:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326925502] [2024-06-28 01:30:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat