./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix003.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/mix003.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/mix003.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix003.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 01:16:59,676 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:16:59,724 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:16:59,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:16:59,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:16:59,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:16:59,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:16:59,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:16:59,765 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:16:59,765 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:16:59,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:16:59,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:16:59,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:16:59,766 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:16:59,766 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:16:59,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:16:59,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:16:59,767 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:16:59,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:16:59,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:16:59,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:16:59,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:16:59,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:16:59,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:16:59,769 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:16:59,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:16:59,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:16:59,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:16:59,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:16:59,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:16:59,770 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:16:59,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:16:59,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:16:59,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:16:59,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:16:59,771 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:16:59,771 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:16:59,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:16:59,771 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:16:59,772 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:16:59,772 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:16:59,772 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:16:59,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:16:59,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:16:59,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:16:59,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:16:59,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:16:59,950 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:16:59,950 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:16:59,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix003.oepc.i [2024-06-28 01:17:01,007 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:17:01,236 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:17:01,238 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix003.oepc.i [2024-06-28 01:17:01,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759225eff/bf97a5dd12da4cb2b786c644f89b32f1/FLAGb502c4dd6 [2024-06-28 01:17:01,272 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/759225eff/bf97a5dd12da4cb2b786c644f89b32f1 [2024-06-28 01:17:01,274 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:17:01,275 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:17:01,275 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix003.oepc.yml/witness.yml [2024-06-28 01:17:01,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:17:01,419 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:17:01,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:17:01,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:17:01,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:17:01,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:17:01" (1/2) ... [2024-06-28 01:17:01,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a49b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:01, skipping insertion in model container [2024-06-28 01:17:01,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:17:01" (1/2) ... [2024-06-28 01:17:01,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@63a4d749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:17:01, skipping insertion in model container [2024-06-28 01:17:01,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:17:01" (2/2) ... [2024-06-28 01:17:01,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a49b60 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:17:01, skipping insertion in model container [2024-06-28 01:17:01,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:17:01" (2/2) ... [2024-06-28 01:17:01,431 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:17:01,512 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:17:01,513 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 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$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$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_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! 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$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-28 01:17:01,514 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && z$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_p1_EBX == 0 || __unbuffered_p1_EBX == 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$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-28 01:17:01,514 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 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$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$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_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! 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$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-28 01:17:01,514 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:17:01,514 INFO L106 edCorrectnessWitness]: ghost_update [L846-L846] multithreaded = 1; [2024-06-28 01:17:01,551 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:17:01,714 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/mix003.oepc.i[945,958] [2024-06-28 01:17:01,879 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:17:01,890 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:17:01,923 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/mix003.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:17:02,007 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:17:02,033 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:17:02,034 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:17:02 WrapperNode [2024-06-28 01:17:02,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:17:02,034 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:17:02,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:17:02,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:17:02,040 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,051 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,075 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2024-06-28 01:17:02,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:17:02,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:17:02,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:17:02,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:17:02,085 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,085 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,087 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,099 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 01:17:02,112 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,112 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,120 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,121 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,123 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,124 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,127 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:17:02,127 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:17:02,128 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:17:02,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:17:02,128 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 01:17:02" (1/1) ... [2024-06-28 01:17:02,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:17:02,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:17:02,149 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 01:17:02,156 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 01:17:02,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:17:02,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:17:02,187 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:17:02,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:17:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:17:02,188 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:17:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:17:02,188 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:17:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:17:02,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:17:02,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:17:02,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:17:02,190 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 01:17:02,332 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:17:02,335 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:17:02,719 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:17:02,719 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:17:02,865 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:17:02,865 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:17:02,866 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:17:02 BoogieIcfgContainer [2024-06-28 01:17:02,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:17:02,869 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:17:02,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:17:02,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:17:02,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:17:01" (1/4) ... [2024-06-28 01:17:02,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f290730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:17:02, skipping insertion in model container [2024-06-28 01:17:02,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:17:01" (2/4) ... [2024-06-28 01:17:02,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f290730 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:17:02, skipping insertion in model container [2024-06-28 01:17:02,874 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 01:17:02" (3/4) ... [2024-06-28 01:17:02,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f290730 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:17:02, skipping insertion in model container [2024-06-28 01:17:02,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:17:02" (4/4) ... [2024-06-28 01:17:02,876 INFO L112 eAbstractionObserver]: Analyzing ICFG mix003.oepc.i [2024-06-28 01:17:02,888 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:17:02,888 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:17:02,889 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:17:02,926 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:17:02,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:17:03,005 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:17:03,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:17:03,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-28 01:17:03,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:17:03,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:17:03,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:17:03,034 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;@4791ac31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:17:03,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:17:03,038 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:17:03,038 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:17:03,038 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:17:03,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:03,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:17:03,039 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 01:17:03,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:03,054 INFO L85 PathProgramCache]: Analyzing trace with hash 363555772, now seen corresponding path program 1 times [2024-06-28 01:17:03,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:03,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785139825] [2024-06-28 01:17:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:03,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:04,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:04,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785139825] [2024-06-28 01:17:04,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785139825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:04,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:04,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:17:04,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994602755] [2024-06-28 01:17:04,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:04,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:17:04,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:04,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:17:04,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:17:04,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-28 01:17:04,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:04,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:04,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-28 01:17:04,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:04,922 INFO L124 PetriNetUnfolderBase]: 3136/5249 cut-off events. [2024-06-28 01:17:04,923 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-28 01:17:04,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9866 conditions, 5249 events. 3136/5249 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 34195 event pairs, 2366 based on Foata normal form. 151/4933 useless extension candidates. Maximal degree in co-relation 9854. Up to 4526 conditions per place. [2024-06-28 01:17:04,951 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 40 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:17:04,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 223 flow [2024-06-28 01:17:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:17:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:17:04,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-28 01:17:04,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7013888888888888 [2024-06-28 01:17:04,962 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 101 transitions. [2024-06-28 01:17:04,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 223 flow [2024-06-28 01:17:04,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:17:04,969 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 01:17:04,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 01:17:04,973 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:17:04,973 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 01:17:04,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:04,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:04,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:17:04,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:17:04,974 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 01:17:04,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash 363556668, now seen corresponding path program 1 times [2024-06-28 01:17:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:04,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242160402] [2024-06-28 01:17:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:04,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:05,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:05,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242160402] [2024-06-28 01:17:05,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242160402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:05,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:05,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:17:05,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687715949] [2024-06-28 01:17:05,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:05,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:17:05,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:05,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:17:05,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:17:05,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2024-06-28 01:17:05,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:05,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:05,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2024-06-28 01:17:05,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:05,349 INFO L124 PetriNetUnfolderBase]: 932/1794 cut-off events. [2024-06-28 01:17:05,350 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:17:05,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3478 conditions, 1794 events. 932/1794 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11948 event pairs, 418 based on Foata normal form. 0/1685 useless extension candidates. Maximal degree in co-relation 3466. Up to 1189 conditions per place. [2024-06-28 01:17:05,358 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 35 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-06-28 01:17:05,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 234 flow [2024-06-28 01:17:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:17:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:17:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-28 01:17:05,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-06-28 01:17:05,361 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 3 states and 113 transitions. [2024-06-28 01:17:05,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 234 flow [2024-06-28 01:17:05,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:17:05,364 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 124 flow [2024-06-28 01:17:05,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 01:17:05,365 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:17:05,365 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 124 flow [2024-06-28 01:17:05,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:05,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:05,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:05,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:17:05,368 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 01:17:05,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:05,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1484783226, now seen corresponding path program 1 times [2024-06-28 01:17:05,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:05,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084680455] [2024-06-28 01:17:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:05,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:06,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:06,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084680455] [2024-06-28 01:17:06,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084680455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:06,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:06,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:17:06,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043633743] [2024-06-28 01:17:06,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:06,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:17:06,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:06,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:17:06,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:17:06,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 48 [2024-06-28 01:17:06,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:06,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:06,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 48 [2024-06-28 01:17:06,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:06,482 INFO L124 PetriNetUnfolderBase]: 2578/4356 cut-off events. [2024-06-28 01:17:06,483 INFO L125 PetriNetUnfolderBase]: For 1104/1104 co-relation queries the response was YES. [2024-06-28 01:17:06,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9211 conditions, 4356 events. 2578/4356 cut-off events. For 1104/1104 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 27606 event pairs, 1548 based on Foata normal form. 3/4198 useless extension candidates. Maximal degree in co-relation 9198. Up to 3717 conditions per place. [2024-06-28 01:17:06,502 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 48 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2024-06-28 01:17:06,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 312 flow [2024-06-28 01:17:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:17:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:17:06,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-28 01:17:06,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-28 01:17:06,504 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 124 flow. Second operand 4 states and 126 transitions. [2024-06-28 01:17:06,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 312 flow [2024-06-28 01:17:06,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:17:06,506 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 185 flow [2024-06-28 01:17:06,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-28 01:17:06,507 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 01:17:06,507 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 185 flow [2024-06-28 01:17:06,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:06,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:06,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:06,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:17:06,508 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 01:17:06,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash 947578169, now seen corresponding path program 1 times [2024-06-28 01:17:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:06,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414603652] [2024-06-28 01:17:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:07,481 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 01:17:07,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:07,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414603652] [2024-06-28 01:17:07,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414603652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:07,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:07,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:17:07,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501168574] [2024-06-28 01:17:07,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:07,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:17:07,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:07,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:17:07,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:17:07,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 01:17:07,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:07,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:07,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 01:17:07,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:08,070 INFO L124 PetriNetUnfolderBase]: 2687/4194 cut-off events. [2024-06-28 01:17:08,070 INFO L125 PetriNetUnfolderBase]: For 1991/1991 co-relation queries the response was YES. [2024-06-28 01:17:08,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10071 conditions, 4194 events. 2687/4194 cut-off events. For 1991/1991 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24629 event pairs, 1033 based on Foata normal form. 3/4157 useless extension candidates. Maximal degree in co-relation 10056. Up to 3824 conditions per place. [2024-06-28 01:17:08,090 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 68 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-28 01:17:08,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 102 transitions, 521 flow [2024-06-28 01:17:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:17:08,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:17:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-28 01:17:08,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 01:17:08,094 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 185 flow. Second operand 6 states and 180 transitions. [2024-06-28 01:17:08,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 102 transitions, 521 flow [2024-06-28 01:17:08,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 102 transitions, 504 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:17:08,098 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 303 flow [2024-06-28 01:17:08,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-06-28 01:17:08,099 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-28 01:17:08,100 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 303 flow [2024-06-28 01:17:08,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:08,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:08,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:08,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:17:08,100 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 01:17:08,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:08,101 INFO L85 PathProgramCache]: Analyzing trace with hash -689846514, now seen corresponding path program 1 times [2024-06-28 01:17:08,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:08,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125487074] [2024-06-28 01:17:08,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:08,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:09,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:09,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125487074] [2024-06-28 01:17:09,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125487074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:09,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:09,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:17:09,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915568702] [2024-06-28 01:17:09,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:09,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:17:09,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:09,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:17:09,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:17:09,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-28 01:17:09,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 303 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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 01:17:09,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:09,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-28 01:17:09,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:10,052 INFO L124 PetriNetUnfolderBase]: 2678/4175 cut-off events. [2024-06-28 01:17:10,052 INFO L125 PetriNetUnfolderBase]: For 4150/4150 co-relation queries the response was YES. [2024-06-28 01:17:10,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11254 conditions, 4175 events. 2678/4175 cut-off events. For 4150/4150 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24451 event pairs, 774 based on Foata normal form. 6/4139 useless extension candidates. Maximal degree in co-relation 11235. Up to 3767 conditions per place. [2024-06-28 01:17:10,076 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 75 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2024-06-28 01:17:10,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 111 transitions, 627 flow [2024-06-28 01:17:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:17:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:17:10,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 205 transitions. [2024-06-28 01:17:10,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6101190476190477 [2024-06-28 01:17:10,078 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 303 flow. Second operand 7 states and 205 transitions. [2024-06-28 01:17:10,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 111 transitions, 627 flow [2024-06-28 01:17:10,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 111 transitions, 604 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:17:10,089 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 345 flow [2024-06-28 01:17:10,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=345, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-28 01:17:10,090 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 01:17:10,090 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 345 flow [2024-06-28 01:17:10,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 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 01:17:10,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:10,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:10,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:17:10,091 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 01:17:10,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:10,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1415999150, now seen corresponding path program 1 times [2024-06-28 01:17:10,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:10,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484688497] [2024-06-28 01:17:10,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:10,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:10,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:10,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484688497] [2024-06-28 01:17:10,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484688497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:10,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:10,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:17:10,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222750043] [2024-06-28 01:17:10,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:10,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:17:10,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:10,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:17:10,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:17:10,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:10,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 345 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 01:17:10,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:10,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:10,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:11,446 INFO L124 PetriNetUnfolderBase]: 3797/6349 cut-off events. [2024-06-28 01:17:11,446 INFO L125 PetriNetUnfolderBase]: For 7825/7825 co-relation queries the response was YES. [2024-06-28 01:17:11,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16678 conditions, 6349 events. 3797/6349 cut-off events. For 7825/7825 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 41021 event pairs, 1709 based on Foata normal form. 2/6169 useless extension candidates. Maximal degree in co-relation 16656. Up to 5433 conditions per place. [2024-06-28 01:17:11,471 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 64 selfloop transitions, 11 changer transitions 0/85 dead transitions. [2024-06-28 01:17:11,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 555 flow [2024-06-28 01:17:11,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:17:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:17:11,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 01:17:11,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:17:11,472 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 345 flow. Second operand 5 states and 123 transitions. [2024-06-28 01:17:11,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 555 flow [2024-06-28 01:17:11,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 500 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:11,476 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 343 flow [2024-06-28 01:17:11,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2024-06-28 01:17:11,477 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 01:17:11,477 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 343 flow [2024-06-28 01:17:11,477 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 01:17:11,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:11,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:11,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:17:11,478 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 01:17:11,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:11,478 INFO L85 PathProgramCache]: Analyzing trace with hash -946299637, now seen corresponding path program 1 times [2024-06-28 01:17:11,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:11,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441639739] [2024-06-28 01:17:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:11,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:12,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:12,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441639739] [2024-06-28 01:17:12,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441639739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:12,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:12,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:17:12,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049897577] [2024-06-28 01:17:12,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:12,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:17:12,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:12,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:17:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:17:12,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:12,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 343 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 01:17:12,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:12,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:12,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:13,033 INFO L124 PetriNetUnfolderBase]: 3787/6330 cut-off events. [2024-06-28 01:17:13,034 INFO L125 PetriNetUnfolderBase]: For 10221/10221 co-relation queries the response was YES. [2024-06-28 01:17:13,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17416 conditions, 6330 events. 3787/6330 cut-off events. For 10221/10221 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 40897 event pairs, 1625 based on Foata normal form. 4/6154 useless extension candidates. Maximal degree in co-relation 17392. Up to 5385 conditions per place. [2024-06-28 01:17:13,065 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 73 selfloop transitions, 14 changer transitions 0/97 dead transitions. [2024-06-28 01:17:13,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 603 flow [2024-06-28 01:17:13,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:17:13,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:17:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:17:13,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:17:13,067 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 343 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:17:13,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 603 flow [2024-06-28 01:17:13,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 97 transitions, 576 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:17:13,072 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 378 flow [2024-06-28 01:17:13,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-06-28 01:17:13,073 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-06-28 01:17:13,073 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 378 flow [2024-06-28 01:17:13,073 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 01:17:13,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:13,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:13,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:17:13,074 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 01:17:13,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash 722838032, now seen corresponding path program 1 times [2024-06-28 01:17:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:13,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871727560] [2024-06-28 01:17:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:13,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:13,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:13,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871727560] [2024-06-28 01:17:13,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871727560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:13,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:13,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:17:13,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120890126] [2024-06-28 01:17:13,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:13,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:17:13,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:13,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:17:13,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:17:13,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:13,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 378 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 01:17:13,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:13,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:13,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:14,453 INFO L124 PetriNetUnfolderBase]: 3815/6403 cut-off events. [2024-06-28 01:17:14,453 INFO L125 PetriNetUnfolderBase]: For 12897/12901 co-relation queries the response was YES. [2024-06-28 01:17:14,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18576 conditions, 6403 events. 3815/6403 cut-off events. For 12897/12901 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 41167 event pairs, 1455 based on Foata normal form. 6/6197 useless extension candidates. Maximal degree in co-relation 18551. Up to 5409 conditions per place. [2024-06-28 01:17:14,515 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 83 selfloop transitions, 18 changer transitions 0/111 dead transitions. [2024-06-28 01:17:14,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 111 transitions, 751 flow [2024-06-28 01:17:14,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:17:14,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:17:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 01:17:14,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 01:17:14,516 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 378 flow. Second operand 6 states and 153 transitions. [2024-06-28 01:17:14,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 111 transitions, 751 flow [2024-06-28 01:17:14,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 111 transitions, 708 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:17:14,522 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 484 flow [2024-06-28 01:17:14,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=484, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2024-06-28 01:17:14,524 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 01:17:14,524 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 484 flow [2024-06-28 01:17:14,525 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 01:17:14,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:14,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:14,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:17:14,525 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 01:17:14,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1102159922, now seen corresponding path program 2 times [2024-06-28 01:17:14,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:14,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211982428] [2024-06-28 01:17:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:14,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:15,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:15,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211982428] [2024-06-28 01:17:15,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211982428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:15,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:15,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:17:15,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244528160] [2024-06-28 01:17:15,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:15,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:17:15,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:15,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:17:15,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:17:15,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:15,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 484 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 01:17:15,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:15,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:15,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:15,888 INFO L124 PetriNetUnfolderBase]: 3810/6421 cut-off events. [2024-06-28 01:17:15,889 INFO L125 PetriNetUnfolderBase]: For 16600/16600 co-relation queries the response was YES. [2024-06-28 01:17:15,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19760 conditions, 6421 events. 3810/6421 cut-off events. For 16600/16600 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 41891 event pairs, 1633 based on Foata normal form. 2/6240 useless extension candidates. Maximal degree in co-relation 19732. Up to 5442 conditions per place. [2024-06-28 01:17:15,923 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 81 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-06-28 01:17:15,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 104 transitions, 730 flow [2024-06-28 01:17:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:17:15,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:17:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:17:15,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:17:15,925 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 484 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:17:15,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 104 transitions, 730 flow [2024-06-28 01:17:15,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 104 transitions, 702 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-28 01:17:15,936 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 490 flow [2024-06-28 01:17:15,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2024-06-28 01:17:15,937 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-06-28 01:17:15,937 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 490 flow [2024-06-28 01:17:15,937 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 01:17:15,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:15,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:15,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:17:15,938 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 01:17:15,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:15,940 INFO L85 PathProgramCache]: Analyzing trace with hash 933023409, now seen corresponding path program 1 times [2024-06-28 01:17:15,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:15,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308871484] [2024-06-28 01:17:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:15,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:16,751 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 01:17:16,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308871484] [2024-06-28 01:17:16,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308871484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:16,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:16,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:17:16,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793836497] [2024-06-28 01:17:16,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:16,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:17:16,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:16,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:17:16,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:17:16,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:16,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 490 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 01:17:16,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:16,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:16,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:17,567 INFO L124 PetriNetUnfolderBase]: 3833/6425 cut-off events. [2024-06-28 01:17:17,567 INFO L125 PetriNetUnfolderBase]: For 18207/18207 co-relation queries the response was YES. [2024-06-28 01:17:17,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20115 conditions, 6425 events. 3833/6425 cut-off events. For 18207/18207 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 41224 event pairs, 1409 based on Foata normal form. 2/6215 useless extension candidates. Maximal degree in co-relation 20084. Up to 5441 conditions per place. [2024-06-28 01:17:17,601 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 98 selfloop transitions, 15 changer transitions 0/123 dead transitions. [2024-06-28 01:17:17,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 123 transitions, 848 flow [2024-06-28 01:17:17,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:17:17,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:17:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:17:17,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 01:17:17,603 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 490 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:17:17,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 123 transitions, 848 flow [2024-06-28 01:17:17,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 123 transitions, 815 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:17:17,613 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 529 flow [2024-06-28 01:17:17,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=529, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2024-06-28 01:17:17,614 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-28 01:17:17,614 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 529 flow [2024-06-28 01:17:17,614 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 01:17:17,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:17,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:17,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:17:17,615 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 01:17:17,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:17,615 INFO L85 PathProgramCache]: Analyzing trace with hash 198648391, now seen corresponding path program 2 times [2024-06-28 01:17:17,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:17,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309041652] [2024-06-28 01:17:17,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:17,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:18,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:18,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:18,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309041652] [2024-06-28 01:17:18,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309041652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:18,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:18,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:17:18,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463973679] [2024-06-28 01:17:18,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:18,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:17:18,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:18,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:17:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:17:18,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:18,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 84 transitions, 529 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 01:17:18,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:18,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:18,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:19,155 INFO L124 PetriNetUnfolderBase]: 3861/6468 cut-off events. [2024-06-28 01:17:19,155 INFO L125 PetriNetUnfolderBase]: For 22715/22721 co-relation queries the response was YES. [2024-06-28 01:17:19,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21319 conditions, 6468 events. 3861/6468 cut-off events. For 22715/22721 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 41427 event pairs, 1417 based on Foata normal form. 8/6264 useless extension candidates. Maximal degree in co-relation 21288. Up to 5399 conditions per place. [2024-06-28 01:17:19,187 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 90 selfloop transitions, 28 changer transitions 0/128 dead transitions. [2024-06-28 01:17:19,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 128 transitions, 969 flow [2024-06-28 01:17:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:17:19,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:17:19,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-28 01:17:19,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-28 01:17:19,189 INFO L175 Difference]: Start difference. First operand has 83 places, 84 transitions, 529 flow. Second operand 7 states and 179 transitions. [2024-06-28 01:17:19,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 128 transitions, 969 flow [2024-06-28 01:17:19,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 128 transitions, 915 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:19,201 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 613 flow [2024-06-28 01:17:19,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=613, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-06-28 01:17:19,202 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-28 01:17:19,202 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 613 flow [2024-06-28 01:17:19,203 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 01:17:19,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:19,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:19,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:17:19,203 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 01:17:19,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:19,204 INFO L85 PathProgramCache]: Analyzing trace with hash 198648577, now seen corresponding path program 1 times [2024-06-28 01:17:19,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:19,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042991761] [2024-06-28 01:17:19,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:19,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:20,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:20,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042991761] [2024-06-28 01:17:20,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042991761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:20,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:20,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:17:20,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378151263] [2024-06-28 01:17:20,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:20,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:17:20,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:20,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:17:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:17:20,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:20,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 613 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 01:17:20,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:20,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:20,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:20,916 INFO L124 PetriNetUnfolderBase]: 3940/6585 cut-off events. [2024-06-28 01:17:20,916 INFO L125 PetriNetUnfolderBase]: For 28973/28979 co-relation queries the response was YES. [2024-06-28 01:17:20,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22806 conditions, 6585 events. 3940/6585 cut-off events. For 28973/28979 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 42151 event pairs, 1312 based on Foata normal form. 6/6375 useless extension candidates. Maximal degree in co-relation 22774. Up to 5491 conditions per place. [2024-06-28 01:17:20,953 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 104 selfloop transitions, 26 changer transitions 0/140 dead transitions. [2024-06-28 01:17:20,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 140 transitions, 1093 flow [2024-06-28 01:17:20,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:17:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:17:20,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 01:17:20,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386904761904762 [2024-06-28 01:17:20,955 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 613 flow. Second operand 7 states and 181 transitions. [2024-06-28 01:17:20,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 140 transitions, 1093 flow [2024-06-28 01:17:20,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 140 transitions, 1047 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:17:20,974 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 728 flow [2024-06-28 01:17:20,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=728, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2024-06-28 01:17:20,975 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-28 01:17:20,975 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 728 flow [2024-06-28 01:17:20,975 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 01:17:20,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:20,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:20,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:17:20,975 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 01:17:20,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:20,976 INFO L85 PathProgramCache]: Analyzing trace with hash -192513753, now seen corresponding path program 2 times [2024-06-28 01:17:20,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:20,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791156423] [2024-06-28 01:17:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:21,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:21,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791156423] [2024-06-28 01:17:21,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791156423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:21,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:21,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:17:21,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660152363] [2024-06-28 01:17:21,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:21,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:17:21,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:21,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:17:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:17:21,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:21,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 728 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 01:17:21,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:21,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:21,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:22,487 INFO L124 PetriNetUnfolderBase]: 3986/6698 cut-off events. [2024-06-28 01:17:22,488 INFO L125 PetriNetUnfolderBase]: For 35653/35653 co-relation queries the response was YES. [2024-06-28 01:17:22,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24796 conditions, 6698 events. 3986/6698 cut-off events. For 35653/35653 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 43683 event pairs, 1531 based on Foata normal form. 4/6512 useless extension candidates. Maximal degree in co-relation 24761. Up to 5657 conditions per place. [2024-06-28 01:17:22,523 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 106 selfloop transitions, 17 changer transitions 0/133 dead transitions. [2024-06-28 01:17:22,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 133 transitions, 1088 flow [2024-06-28 01:17:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:17:22,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:17:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:17:22,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:17:22,532 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 728 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:17:22,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 133 transitions, 1088 flow [2024-06-28 01:17:22,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 133 transitions, 1058 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 01:17:22,555 INFO L231 Difference]: Finished difference. Result has 95 places, 103 transitions, 782 flow [2024-06-28 01:17:22,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=782, PETRI_PLACES=95, PETRI_TRANSITIONS=103} [2024-06-28 01:17:22,555 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-06-28 01:17:22,556 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 103 transitions, 782 flow [2024-06-28 01:17:22,556 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 01:17:22,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:22,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:22,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:17:22,556 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:22,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:22,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1138874259, now seen corresponding path program 3 times [2024-06-28 01:17:22,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:22,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970765631] [2024-06-28 01:17:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:23,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:23,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970765631] [2024-06-28 01:17:23,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970765631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:23,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:23,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:17:23,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283523849] [2024-06-28 01:17:23,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:23,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:17:23,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:23,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:17:23,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:17:23,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:23,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 103 transitions, 782 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 01:17:23,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:23,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:23,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:24,117 INFO L124 PetriNetUnfolderBase]: 3981/6687 cut-off events. [2024-06-28 01:17:24,117 INFO L125 PetriNetUnfolderBase]: For 38016/38016 co-relation queries the response was YES. [2024-06-28 01:17:24,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24989 conditions, 6687 events. 3981/6687 cut-off events. For 38016/38016 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 43628 event pairs, 1527 based on Foata normal form. 2/6500 useless extension candidates. Maximal degree in co-relation 24951. Up to 5663 conditions per place. [2024-06-28 01:17:24,156 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 108 selfloop transitions, 16 changer transitions 0/134 dead transitions. [2024-06-28 01:17:24,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 134 transitions, 1114 flow [2024-06-28 01:17:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:17:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:17:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:17:24,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-28 01:17:24,157 INFO L175 Difference]: Start difference. First operand has 95 places, 103 transitions, 782 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:17:24,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 134 transitions, 1114 flow [2024-06-28 01:17:24,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 134 transitions, 1034 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:24,183 INFO L231 Difference]: Finished difference. Result has 97 places, 103 transitions, 742 flow [2024-06-28 01:17:24,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=97, PETRI_TRANSITIONS=103} [2024-06-28 01:17:24,184 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-28 01:17:24,184 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 103 transitions, 742 flow [2024-06-28 01:17:24,184 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 01:17:24,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:24,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:24,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:17:24,185 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 01:17:24,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:24,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1138874445, now seen corresponding path program 3 times [2024-06-28 01:17:24,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:24,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199638233] [2024-06-28 01:17:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:24,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:24,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:24,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199638233] [2024-06-28 01:17:24,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199638233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:24,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:24,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:17:24,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232911754] [2024-06-28 01:17:24,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:24,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:17:24,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:24,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:17:24,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:17:25,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:25,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 103 transitions, 742 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 01:17:25,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:25,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:25,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:25,846 INFO L124 PetriNetUnfolderBase]: 3971/6676 cut-off events. [2024-06-28 01:17:25,846 INFO L125 PetriNetUnfolderBase]: For 39549/39549 co-relation queries the response was YES. [2024-06-28 01:17:25,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24914 conditions, 6676 events. 3971/6676 cut-off events. For 39549/39549 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 43572 event pairs, 1524 based on Foata normal form. 4/6490 useless extension candidates. Maximal degree in co-relation 24876. Up to 5587 conditions per place. [2024-06-28 01:17:25,885 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 103 selfloop transitions, 24 changer transitions 0/137 dead transitions. [2024-06-28 01:17:25,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 137 transitions, 1105 flow [2024-06-28 01:17:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:25,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:25,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:17:25,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-28 01:17:25,888 INFO L175 Difference]: Start difference. First operand has 97 places, 103 transitions, 742 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:17:25,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 137 transitions, 1105 flow [2024-06-28 01:17:25,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 137 transitions, 1038 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:25,915 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 755 flow [2024-06-28 01:17:25,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=755, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2024-06-28 01:17:25,916 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-28 01:17:25,916 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 755 flow [2024-06-28 01:17:25,916 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 01:17:25,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:25,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:25,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:17:25,916 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:25,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:25,917 INFO L85 PathProgramCache]: Analyzing trace with hash 583326286, now seen corresponding path program 1 times [2024-06-28 01:17:25,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:25,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29048528] [2024-06-28 01:17:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:25,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:26,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:26,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29048528] [2024-06-28 01:17:26,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29048528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:26,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:26,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:17:26,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105330781] [2024-06-28 01:17:26,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:26,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:17:26,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:17:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:17:26,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:26,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 755 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 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 01:17:26,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:26,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:26,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:27,339 INFO L124 PetriNetUnfolderBase]: 4795/8120 cut-off events. [2024-06-28 01:17:27,340 INFO L125 PetriNetUnfolderBase]: For 51019/51065 co-relation queries the response was YES. [2024-06-28 01:17:27,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29133 conditions, 8120 events. 4795/8120 cut-off events. For 51019/51065 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 54899 event pairs, 2107 based on Foata normal form. 9/7868 useless extension candidates. Maximal degree in co-relation 29093. Up to 6866 conditions per place. [2024-06-28 01:17:27,397 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 86 selfloop transitions, 12 changer transitions 0/122 dead transitions. [2024-06-28 01:17:27,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 122 transitions, 1009 flow [2024-06-28 01:17:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:17:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:17:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 01:17:27,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-28 01:17:27,405 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 755 flow. Second operand 5 states and 119 transitions. [2024-06-28 01:17:27,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 122 transitions, 1009 flow [2024-06-28 01:17:27,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 122 transitions, 934 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:27,448 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 737 flow [2024-06-28 01:17:27,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=737, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2024-06-28 01:17:27,448 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-28 01:17:27,448 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 737 flow [2024-06-28 01:17:27,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 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 01:17:27,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:27,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:27,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:17:27,449 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 01:17:27,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:27,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1141134705, now seen corresponding path program 1 times [2024-06-28 01:17:27,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:27,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481084795] [2024-06-28 01:17:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:27,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:28,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:28,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481084795] [2024-06-28 01:17:28,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481084795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:28,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:28,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361460717] [2024-06-28 01:17:28,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:28,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:28,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:28,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 737 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 01:17:28,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:28,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:28,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:29,771 INFO L124 PetriNetUnfolderBase]: 4184/6406 cut-off events. [2024-06-28 01:17:29,771 INFO L125 PetriNetUnfolderBase]: For 50799/50799 co-relation queries the response was YES. [2024-06-28 01:17:29,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27044 conditions, 6406 events. 4184/6406 cut-off events. For 50799/50799 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 37461 event pairs, 1171 based on Foata normal form. 2/6358 useless extension candidates. Maximal degree in co-relation 27003. Up to 5804 conditions per place. [2024-06-28 01:17:29,811 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 129 selfloop transitions, 37 changer transitions 0/177 dead transitions. [2024-06-28 01:17:29,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 177 transitions, 1417 flow [2024-06-28 01:17:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-28 01:17:29,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145833333333333 [2024-06-28 01:17:29,813 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 737 flow. Second operand 10 states and 247 transitions. [2024-06-28 01:17:29,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 177 transitions, 1417 flow [2024-06-28 01:17:29,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 177 transitions, 1384 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:17:29,844 INFO L231 Difference]: Finished difference. Result has 107 places, 117 transitions, 916 flow [2024-06-28 01:17:29,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=916, PETRI_PLACES=107, PETRI_TRANSITIONS=117} [2024-06-28 01:17:29,844 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-28 01:17:29,844 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 117 transitions, 916 flow [2024-06-28 01:17:29,845 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 01:17:29,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:29,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:29,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:17:29,845 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 01:17:29,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:29,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1141044340, now seen corresponding path program 1 times [2024-06-28 01:17:29,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:29,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617269195] [2024-06-28 01:17:29,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:29,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:30,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:30,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617269195] [2024-06-28 01:17:30,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617269195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:30,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:30,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:30,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898381576] [2024-06-28 01:17:30,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:30,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:30,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:30,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:30,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:30,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 117 transitions, 916 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 01:17:30,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:30,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:30,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:31,756 INFO L124 PetriNetUnfolderBase]: 4281/7055 cut-off events. [2024-06-28 01:17:31,756 INFO L125 PetriNetUnfolderBase]: For 60922/60922 co-relation queries the response was YES. [2024-06-28 01:17:31,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29581 conditions, 7055 events. 4281/7055 cut-off events. For 60922/60922 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 45043 event pairs, 1328 based on Foata normal form. 4/6821 useless extension candidates. Maximal degree in co-relation 29538. Up to 5989 conditions per place. [2024-06-28 01:17:31,801 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 137 selfloop transitions, 19 changer transitions 0/167 dead transitions. [2024-06-28 01:17:31,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 167 transitions, 1410 flow [2024-06-28 01:17:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:31,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:31,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:17:31,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 01:17:31,804 INFO L175 Difference]: Start difference. First operand has 107 places, 117 transitions, 916 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:17:31,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 167 transitions, 1410 flow [2024-06-28 01:17:31,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 167 transitions, 1307 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:31,845 INFO L231 Difference]: Finished difference. Result has 110 places, 120 transitions, 907 flow [2024-06-28 01:17:31,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=907, PETRI_PLACES=110, PETRI_TRANSITIONS=120} [2024-06-28 01:17:31,846 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-28 01:17:31,846 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 120 transitions, 907 flow [2024-06-28 01:17:31,846 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 01:17:31,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:31,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:31,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:17:31,847 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 01:17:31,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:31,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1141044495, now seen corresponding path program 2 times [2024-06-28 01:17:31,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:31,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706485290] [2024-06-28 01:17:31,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:31,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:32,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:32,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706485290] [2024-06-28 01:17:32,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706485290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:32,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:32,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:32,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248664743] [2024-06-28 01:17:32,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:32,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:32,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:32,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:32,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:33,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:33,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 120 transitions, 907 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 01:17:33,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:33,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:33,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:34,014 INFO L124 PetriNetUnfolderBase]: 4286/7070 cut-off events. [2024-06-28 01:17:34,015 INFO L125 PetriNetUnfolderBase]: For 67564/67564 co-relation queries the response was YES. [2024-06-28 01:17:34,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30555 conditions, 7070 events. 4286/7070 cut-off events. For 67564/67564 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 45208 event pairs, 1340 based on Foata normal form. 2/6833 useless extension candidates. Maximal degree in co-relation 30511. Up to 6011 conditions per place. [2024-06-28 01:17:34,069 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 139 selfloop transitions, 19 changer transitions 0/169 dead transitions. [2024-06-28 01:17:34,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 169 transitions, 1391 flow [2024-06-28 01:17:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:34,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:17:34,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:17:34,073 INFO L175 Difference]: Start difference. First operand has 110 places, 120 transitions, 907 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:17:34,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 169 transitions, 1391 flow [2024-06-28 01:17:34,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 169 transitions, 1289 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:34,113 INFO L231 Difference]: Finished difference. Result has 112 places, 123 transitions, 889 flow [2024-06-28 01:17:34,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=889, PETRI_PLACES=112, PETRI_TRANSITIONS=123} [2024-06-28 01:17:34,114 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-28 01:17:34,114 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 123 transitions, 889 flow [2024-06-28 01:17:34,115 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 01:17:34,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:34,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:34,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:17:34,116 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:34,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:34,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1137325270, now seen corresponding path program 2 times [2024-06-28 01:17:34,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:34,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260761813] [2024-06-28 01:17:34,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:34,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:35,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:35,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260761813] [2024-06-28 01:17:35,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260761813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:35,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:35,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:35,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19331462] [2024-06-28 01:17:35,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:35,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:35,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:35,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:35,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:35,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:35,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 123 transitions, 889 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 01:17:35,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:35,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:35,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:36,058 INFO L124 PetriNetUnfolderBase]: 4421/7253 cut-off events. [2024-06-28 01:17:36,058 INFO L125 PetriNetUnfolderBase]: For 75816/75820 co-relation queries the response was YES. [2024-06-28 01:17:36,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31887 conditions, 7253 events. 4421/7253 cut-off events. For 75816/75820 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 46205 event pairs, 1286 based on Foata normal form. 5/7022 useless extension candidates. Maximal degree in co-relation 31842. Up to 5831 conditions per place. [2024-06-28 01:17:36,104 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 125 selfloop transitions, 47 changer transitions 0/183 dead transitions. [2024-06-28 01:17:36,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 183 transitions, 1667 flow [2024-06-28 01:17:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:17:36,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-28 01:17:36,105 INFO L175 Difference]: Start difference. First operand has 112 places, 123 transitions, 889 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:17:36,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 183 transitions, 1667 flow [2024-06-28 01:17:36,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 183 transitions, 1629 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:36,150 INFO L231 Difference]: Finished difference. Result has 114 places, 132 transitions, 1103 flow [2024-06-28 01:17:36,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1103, PETRI_PLACES=114, PETRI_TRANSITIONS=132} [2024-06-28 01:17:36,151 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-28 01:17:36,151 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 132 transitions, 1103 flow [2024-06-28 01:17:36,151 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 01:17:36,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:36,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:36,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:17:36,152 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 01:17:36,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:36,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1137325425, now seen corresponding path program 3 times [2024-06-28 01:17:36,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:36,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109157874] [2024-06-28 01:17:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:36,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:37,085 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 01:17:37,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:37,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109157874] [2024-06-28 01:17:37,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109157874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:37,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:37,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:37,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760988803] [2024-06-28 01:17:37,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:37,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:37,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:37,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:37,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:37,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:37,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 132 transitions, 1103 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 01:17:37,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:37,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:37,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:38,162 INFO L124 PetriNetUnfolderBase]: 4444/7313 cut-off events. [2024-06-28 01:17:38,163 INFO L125 PetriNetUnfolderBase]: For 85810/85814 co-relation queries the response was YES. [2024-06-28 01:17:38,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33423 conditions, 7313 events. 4444/7313 cut-off events. For 85810/85814 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 46837 event pairs, 1359 based on Foata normal form. 6/7075 useless extension candidates. Maximal degree in co-relation 33377. Up to 6152 conditions per place. [2024-06-28 01:17:38,217 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 135 selfloop transitions, 32 changer transitions 0/178 dead transitions. [2024-06-28 01:17:38,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 178 transitions, 1609 flow [2024-06-28 01:17:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:17:38,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 01:17:38,219 INFO L175 Difference]: Start difference. First operand has 114 places, 132 transitions, 1103 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:17:38,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 178 transitions, 1609 flow [2024-06-28 01:17:38,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 178 transitions, 1525 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 01:17:38,283 INFO L231 Difference]: Finished difference. Result has 119 places, 135 transitions, 1143 flow [2024-06-28 01:17:38,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1143, PETRI_PLACES=119, PETRI_TRANSITIONS=135} [2024-06-28 01:17:38,284 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-28 01:17:38,284 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 135 transitions, 1143 flow [2024-06-28 01:17:38,284 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 01:17:38,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:38,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:38,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:17:38,285 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 01:17:38,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1863139458, now seen corresponding path program 3 times [2024-06-28 01:17:38,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:38,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083035485] [2024-06-28 01:17:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:38,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:39,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:39,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:39,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083035485] [2024-06-28 01:17:39,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083035485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:39,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:39,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:39,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345777825] [2024-06-28 01:17:39,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:39,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:39,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:39,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:39,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:39,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:39,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 135 transitions, 1143 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 01:17:39,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:39,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:39,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:39,994 INFO L124 PetriNetUnfolderBase]: 4434/7274 cut-off events. [2024-06-28 01:17:39,994 INFO L125 PetriNetUnfolderBase]: For 91793/91797 co-relation queries the response was YES. [2024-06-28 01:17:40,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34022 conditions, 7274 events. 4434/7274 cut-off events. For 91793/91797 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 46353 event pairs, 1286 based on Foata normal form. 5/7042 useless extension candidates. Maximal degree in co-relation 33974. Up to 5855 conditions per place. [2024-06-28 01:17:40,051 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 124 selfloop transitions, 48 changer transitions 0/183 dead transitions. [2024-06-28 01:17:40,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 183 transitions, 1707 flow [2024-06-28 01:17:40,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-28 01:17:40,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-28 01:17:40,052 INFO L175 Difference]: Start difference. First operand has 119 places, 135 transitions, 1143 flow. Second operand 8 states and 209 transitions. [2024-06-28 01:17:40,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 183 transitions, 1707 flow [2024-06-28 01:17:40,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 183 transitions, 1583 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:40,128 INFO L231 Difference]: Finished difference. Result has 121 places, 135 transitions, 1123 flow [2024-06-28 01:17:40,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1123, PETRI_PLACES=121, PETRI_TRANSITIONS=135} [2024-06-28 01:17:40,128 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-28 01:17:40,128 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 135 transitions, 1123 flow [2024-06-28 01:17:40,129 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 01:17:40,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:40,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:40,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:17:40,129 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 01:17:40,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:40,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1672958180, now seen corresponding path program 4 times [2024-06-28 01:17:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:40,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414211844] [2024-06-28 01:17:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:40,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:40,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:40,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414211844] [2024-06-28 01:17:40,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414211844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:40,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:40,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:40,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907133163] [2024-06-28 01:17:40,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:40,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:40,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:40,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:40,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:40,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:40,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 135 transitions, 1123 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 01:17:40,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:40,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:40,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:42,027 INFO L124 PetriNetUnfolderBase]: 4489/7163 cut-off events. [2024-06-28 01:17:42,027 INFO L125 PetriNetUnfolderBase]: For 99194/99194 co-relation queries the response was YES. [2024-06-28 01:17:42,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34619 conditions, 7163 events. 4489/7163 cut-off events. For 99194/99194 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 44995 event pairs, 1564 based on Foata normal form. 4/7019 useless extension candidates. Maximal degree in co-relation 34570. Up to 6261 conditions per place. [2024-06-28 01:17:42,074 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 144 selfloop transitions, 21 changer transitions 0/176 dead transitions. [2024-06-28 01:17:42,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 176 transitions, 1615 flow [2024-06-28 01:17:42,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:42,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:42,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:17:42,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-06-28 01:17:42,076 INFO L175 Difference]: Start difference. First operand has 121 places, 135 transitions, 1123 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:17:42,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 176 transitions, 1615 flow [2024-06-28 01:17:42,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 176 transitions, 1505 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:17:42,133 INFO L231 Difference]: Finished difference. Result has 122 places, 138 transitions, 1127 flow [2024-06-28 01:17:42,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1127, PETRI_PLACES=122, PETRI_TRANSITIONS=138} [2024-06-28 01:17:42,133 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-28 01:17:42,133 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 138 transitions, 1127 flow [2024-06-28 01:17:42,134 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 01:17:42,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:42,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:42,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:17:42,134 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 01:17:42,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:42,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2007024253, now seen corresponding path program 4 times [2024-06-28 01:17:42,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:42,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377786332] [2024-06-28 01:17:42,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:42,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:42,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:42,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377786332] [2024-06-28 01:17:42,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377786332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:42,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:42,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186259464] [2024-06-28 01:17:42,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:42,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:42,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:42,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:43,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:43,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 138 transitions, 1127 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 01:17:43,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:43,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:43,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:44,202 INFO L124 PetriNetUnfolderBase]: 4499/7171 cut-off events. [2024-06-28 01:17:44,202 INFO L125 PetriNetUnfolderBase]: For 103895/103895 co-relation queries the response was YES. [2024-06-28 01:17:44,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34707 conditions, 7171 events. 4499/7171 cut-off events. For 103895/103895 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 44955 event pairs, 1563 based on Foata normal form. 2/7027 useless extension candidates. Maximal degree in co-relation 34657. Up to 6300 conditions per place. [2024-06-28 01:17:44,260 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 146 selfloop transitions, 30 changer transitions 0/187 dead transitions. [2024-06-28 01:17:44,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 187 transitions, 1753 flow [2024-06-28 01:17:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:44,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:17:44,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 01:17:44,262 INFO L175 Difference]: Start difference. First operand has 122 places, 138 transitions, 1127 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:17:44,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 187 transitions, 1753 flow [2024-06-28 01:17:44,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 187 transitions, 1675 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:44,346 INFO L231 Difference]: Finished difference. Result has 126 places, 147 transitions, 1308 flow [2024-06-28 01:17:44,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1308, PETRI_PLACES=126, PETRI_TRANSITIONS=147} [2024-06-28 01:17:44,346 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 72 predicate places. [2024-06-28 01:17:44,347 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 147 transitions, 1308 flow [2024-06-28 01:17:44,347 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 01:17:44,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:44,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:44,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:17:44,347 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:44,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:44,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2007024408, now seen corresponding path program 5 times [2024-06-28 01:17:44,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:44,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579995668] [2024-06-28 01:17:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:44,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:45,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:45,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579995668] [2024-06-28 01:17:45,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579995668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:45,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:45,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:45,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802485382] [2024-06-28 01:17:45,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:45,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:45,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:45,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:45,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:45,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:45,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 147 transitions, 1308 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 01:17:45,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:45,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:45,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:46,220 INFO L124 PetriNetUnfolderBase]: 4545/7225 cut-off events. [2024-06-28 01:17:46,220 INFO L125 PetriNetUnfolderBase]: For 117627/117627 co-relation queries the response was YES. [2024-06-28 01:17:46,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36487 conditions, 7225 events. 4545/7225 cut-off events. For 117627/117627 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 45139 event pairs, 1557 based on Foata normal form. 4/7086 useless extension candidates. Maximal degree in co-relation 36434. Up to 6190 conditions per place. [2024-06-28 01:17:46,275 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 147 selfloop transitions, 35 changer transitions 0/193 dead transitions. [2024-06-28 01:17:46,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 193 transitions, 1942 flow [2024-06-28 01:17:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:17:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:17:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-28 01:17:46,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-28 01:17:46,277 INFO L175 Difference]: Start difference. First operand has 126 places, 147 transitions, 1308 flow. Second operand 9 states and 215 transitions. [2024-06-28 01:17:46,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 193 transitions, 1942 flow [2024-06-28 01:17:46,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 193 transitions, 1804 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-06-28 01:17:46,419 INFO L231 Difference]: Finished difference. Result has 132 places, 150 transitions, 1306 flow [2024-06-28 01:17:46,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1306, PETRI_PLACES=132, PETRI_TRANSITIONS=150} [2024-06-28 01:17:46,420 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2024-06-28 01:17:46,420 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 150 transitions, 1306 flow [2024-06-28 01:17:46,420 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 01:17:46,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:46,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:46,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:17:46,420 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 01:17:46,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:46,421 INFO L85 PathProgramCache]: Analyzing trace with hash -820545092, now seen corresponding path program 6 times [2024-06-28 01:17:46,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:46,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748310098] [2024-06-28 01:17:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:47,218 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 01:17:47,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:47,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748310098] [2024-06-28 01:17:47,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748310098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:47,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:47,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:17:47,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555203732] [2024-06-28 01:17:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:47,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:17:47,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:47,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:17:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:17:47,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:47,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 150 transitions, 1306 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 01:17:47,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:47,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:47,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:48,243 INFO L124 PetriNetUnfolderBase]: 4535/7217 cut-off events. [2024-06-28 01:17:48,243 INFO L125 PetriNetUnfolderBase]: For 122314/122314 co-relation queries the response was YES. [2024-06-28 01:17:48,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36647 conditions, 7217 events. 4535/7217 cut-off events. For 122314/122314 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 45201 event pairs, 1568 based on Foata normal form. 4/7077 useless extension candidates. Maximal degree in co-relation 36592. Up to 6182 conditions per place. [2024-06-28 01:17:48,298 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 147 selfloop transitions, 33 changer transitions 0/191 dead transitions. [2024-06-28 01:17:48,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 191 transitions, 1784 flow [2024-06-28 01:17:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:48,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:17:48,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:17:48,300 INFO L175 Difference]: Start difference. First operand has 132 places, 150 transitions, 1306 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:17:48,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 191 transitions, 1784 flow [2024-06-28 01:17:48,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 191 transitions, 1623 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 01:17:48,397 INFO L231 Difference]: Finished difference. Result has 133 places, 150 transitions, 1219 flow [2024-06-28 01:17:48,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1219, PETRI_PLACES=133, PETRI_TRANSITIONS=150} [2024-06-28 01:17:48,397 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2024-06-28 01:17:48,398 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 150 transitions, 1219 flow [2024-06-28 01:17:48,398 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 01:17:48,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:48,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:48,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:17:48,398 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 01:17:48,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:48,412 INFO L85 PathProgramCache]: Analyzing trace with hash 953922512, now seen corresponding path program 1 times [2024-06-28 01:17:48,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:48,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236949882] [2024-06-28 01:17:48,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:48,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:49,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:49,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236949882] [2024-06-28 01:17:49,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236949882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:49,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:49,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:49,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027964425] [2024-06-28 01:17:49,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:49,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:49,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:49,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:49,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:49,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:17:49,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 150 transitions, 1219 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 01:17:49,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:49,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:17:49,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:51,186 INFO L124 PetriNetUnfolderBase]: 5404/8547 cut-off events. [2024-06-28 01:17:51,187 INFO L125 PetriNetUnfolderBase]: For 143484/143484 co-relation queries the response was YES. [2024-06-28 01:17:51,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41766 conditions, 8547 events. 5404/8547 cut-off events. For 143484/143484 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 53569 event pairs, 1907 based on Foata normal form. 4/8360 useless extension candidates. Maximal degree in co-relation 41710. Up to 7535 conditions per place. [2024-06-28 01:17:51,261 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 162 selfloop transitions, 27 changer transitions 0/199 dead transitions. [2024-06-28 01:17:51,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 199 transitions, 1789 flow [2024-06-28 01:17:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:17:51,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:17:51,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:17:51,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-06-28 01:17:51,263 INFO L175 Difference]: Start difference. First operand has 133 places, 150 transitions, 1219 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:17:51,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 199 transitions, 1789 flow [2024-06-28 01:17:51,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 199 transitions, 1699 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:17:51,381 INFO L231 Difference]: Finished difference. Result has 135 places, 157 transitions, 1281 flow [2024-06-28 01:17:51,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1281, PETRI_PLACES=135, PETRI_TRANSITIONS=157} [2024-06-28 01:17:51,382 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 01:17:51,382 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 157 transitions, 1281 flow [2024-06-28 01:17:51,382 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 01:17:51,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:51,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:51,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:17:51,382 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:17:51,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:51,383 INFO L85 PathProgramCache]: Analyzing trace with hash 887160142, now seen corresponding path program 1 times [2024-06-28 01:17:51,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:51,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041131530] [2024-06-28 01:17:51,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:51,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:52,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041131530] [2024-06-28 01:17:52,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041131530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:52,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:52,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:17:52,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432776709] [2024-06-28 01:17:52,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:52,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:17:52,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:52,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:17:52,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:17:52,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:52,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 157 transitions, 1281 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:52,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:52,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:52,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:53,303 INFO L124 PetriNetUnfolderBase]: 5144/8142 cut-off events. [2024-06-28 01:17:53,303 INFO L125 PetriNetUnfolderBase]: For 146997/147069 co-relation queries the response was YES. [2024-06-28 01:17:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39740 conditions, 8142 events. 5144/8142 cut-off events. For 146997/147069 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 50922 event pairs, 2028 based on Foata normal form. 15/7977 useless extension candidates. Maximal degree in co-relation 39682. Up to 7254 conditions per place. [2024-06-28 01:17:53,372 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 133 selfloop transitions, 15 changer transitions 0/181 dead transitions. [2024-06-28 01:17:53,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 181 transitions, 1661 flow [2024-06-28 01:17:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:17:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:17:53,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:17:53,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:17:53,374 INFO L175 Difference]: Start difference. First operand has 135 places, 157 transitions, 1281 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:17:53,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 181 transitions, 1661 flow [2024-06-28 01:17:53,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 181 transitions, 1574 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:17:53,513 INFO L231 Difference]: Finished difference. Result has 136 places, 160 transitions, 1262 flow [2024-06-28 01:17:53,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1262, PETRI_PLACES=136, PETRI_TRANSITIONS=160} [2024-06-28 01:17:53,514 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-28 01:17:53,514 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 160 transitions, 1262 flow [2024-06-28 01:17:53,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:17:53,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:53,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:53,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:17:53,515 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 01:17:53,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:53,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1015497008, now seen corresponding path program 1 times [2024-06-28 01:17:53,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:53,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332742630] [2024-06-28 01:17:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:53,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:54,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:54,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332742630] [2024-06-28 01:17:54,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332742630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:54,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:54,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:54,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748959158] [2024-06-28 01:17:54,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:54,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:54,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:54,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:54,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:54,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:54,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 160 transitions, 1262 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 01:17:54,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:54,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:54,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:55,905 INFO L124 PetriNetUnfolderBase]: 5141/7864 cut-off events. [2024-06-28 01:17:55,905 INFO L125 PetriNetUnfolderBase]: For 156868/156872 co-relation queries the response was YES. [2024-06-28 01:17:55,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41928 conditions, 7864 events. 5141/7864 cut-off events. For 156868/156872 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 47108 event pairs, 1043 based on Foata normal form. 8/7783 useless extension candidates. Maximal degree in co-relation 41869. Up to 6996 conditions per place. [2024-06-28 01:17:55,966 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 178 selfloop transitions, 44 changer transitions 0/234 dead transitions. [2024-06-28 01:17:55,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 234 transitions, 2114 flow [2024-06-28 01:17:55,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:17:55,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:17:55,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-28 01:17:55,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 01:17:55,975 INFO L175 Difference]: Start difference. First operand has 136 places, 160 transitions, 1262 flow. Second operand 10 states and 256 transitions. [2024-06-28 01:17:55,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 234 transitions, 2114 flow [2024-06-28 01:17:56,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 234 transitions, 2068 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:17:56,084 INFO L231 Difference]: Finished difference. Result has 142 places, 164 transitions, 1415 flow [2024-06-28 01:17:56,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1415, PETRI_PLACES=142, PETRI_TRANSITIONS=164} [2024-06-28 01:17:56,086 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 88 predicate places. [2024-06-28 01:17:56,086 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 164 transitions, 1415 flow [2024-06-28 01:17:56,087 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 01:17:56,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:56,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:56,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:17:56,087 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 01:17:56,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:56,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1015436434, now seen corresponding path program 1 times [2024-06-28 01:17:56,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:56,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996253082] [2024-06-28 01:17:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:56,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:57,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:57,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996253082] [2024-06-28 01:17:57,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996253082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:57,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:57,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:57,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918124538] [2024-06-28 01:17:57,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:57,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:57,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:57,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:57,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:17:57,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:17:57,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 164 transitions, 1415 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 01:17:57,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:17:57,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:17:57,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:17:58,568 INFO L124 PetriNetUnfolderBase]: 5256/8242 cut-off events. [2024-06-28 01:17:58,569 INFO L125 PetriNetUnfolderBase]: For 174331/174335 co-relation queries the response was YES. [2024-06-28 01:17:58,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44022 conditions, 8242 events. 5256/8242 cut-off events. For 174331/174335 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 51363 event pairs, 1438 based on Foata normal form. 8/8072 useless extension candidates. Maximal degree in co-relation 43962. Up to 7226 conditions per place. [2024-06-28 01:17:58,643 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 205 selfloop transitions, 31 changer transitions 0/248 dead transitions. [2024-06-28 01:17:58,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 248 transitions, 2218 flow [2024-06-28 01:17:58,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:17:58,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:17:58,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-06-28 01:17:58,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246212121212122 [2024-06-28 01:17:58,645 INFO L175 Difference]: Start difference. First operand has 142 places, 164 transitions, 1415 flow. Second operand 11 states and 277 transitions. [2024-06-28 01:17:58,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 248 transitions, 2218 flow [2024-06-28 01:17:58,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 248 transitions, 2095 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:17:58,782 INFO L231 Difference]: Finished difference. Result has 149 places, 173 transitions, 1499 flow [2024-06-28 01:17:58,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1499, PETRI_PLACES=149, PETRI_TRANSITIONS=173} [2024-06-28 01:17:58,783 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-28 01:17:58,783 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 1499 flow [2024-06-28 01:17:58,783 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 01:17:58,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:17:58,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:17:58,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:17:58,784 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 01:17:58,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:17:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1015436558, now seen corresponding path program 2 times [2024-06-28 01:17:58,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:17:58,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109629701] [2024-06-28 01:17:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:17:58,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:17:58,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:17:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:17:59,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:17:59,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109629701] [2024-06-28 01:17:59,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109629701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:17:59,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:17:59,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:17:59,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84092806] [2024-06-28 01:17:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:17:59,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:17:59,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:17:59,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:17:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:00,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:00,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 1499 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 01:18:00,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:00,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:00,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:01,487 INFO L124 PetriNetUnfolderBase]: 5255/7989 cut-off events. [2024-06-28 01:18:01,488 INFO L125 PetriNetUnfolderBase]: For 183945/183949 co-relation queries the response was YES. [2024-06-28 01:18:01,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44662 conditions, 7989 events. 5255/7989 cut-off events. For 183945/183949 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 47676 event pairs, 1272 based on Foata normal form. 8/7915 useless extension candidates. Maximal degree in co-relation 44598. Up to 7259 conditions per place. [2024-06-28 01:18:01,565 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 183 selfloop transitions, 47 changer transitions 0/242 dead transitions. [2024-06-28 01:18:01,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 242 transitions, 2189 flow [2024-06-28 01:18:01,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:01,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:01,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-28 01:18:01,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5270833333333333 [2024-06-28 01:18:01,567 INFO L175 Difference]: Start difference. First operand has 149 places, 173 transitions, 1499 flow. Second operand 10 states and 253 transitions. [2024-06-28 01:18:01,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 242 transitions, 2189 flow [2024-06-28 01:18:01,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 242 transitions, 2095 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 01:18:01,745 INFO L231 Difference]: Finished difference. Result has 152 places, 175 transitions, 1543 flow [2024-06-28 01:18:01,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1543, PETRI_PLACES=152, PETRI_TRANSITIONS=175} [2024-06-28 01:18:01,746 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 98 predicate places. [2024-06-28 01:18:01,746 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 175 transitions, 1543 flow [2024-06-28 01:18:01,746 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 01:18:01,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:01,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:01,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:18:01,747 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:01,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1807280324, now seen corresponding path program 3 times [2024-06-28 01:18:01,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:01,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661966772] [2024-06-28 01:18:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:01,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:02,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:02,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661966772] [2024-06-28 01:18:02,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661966772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:02,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:02,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:02,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369691598] [2024-06-28 01:18:02,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:02,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:02,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:02,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:02,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:03,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:03,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 175 transitions, 1543 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 01:18:03,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:03,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:03,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:04,419 INFO L124 PetriNetUnfolderBase]: 5283/8265 cut-off events. [2024-06-28 01:18:04,419 INFO L125 PetriNetUnfolderBase]: For 192038/192042 co-relation queries the response was YES. [2024-06-28 01:18:04,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45156 conditions, 8265 events. 5283/8265 cut-off events. For 192038/192042 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 51477 event pairs, 1466 based on Foata normal form. 8/8105 useless extension candidates. Maximal degree in co-relation 45091. Up to 7365 conditions per place. [2024-06-28 01:18:04,484 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 199 selfloop transitions, 21 changer transitions 0/232 dead transitions. [2024-06-28 01:18:04,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 232 transitions, 2181 flow [2024-06-28 01:18:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:18:04,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:18:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:18:04,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-28 01:18:04,487 INFO L175 Difference]: Start difference. First operand has 152 places, 175 transitions, 1543 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:18:04,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 232 transitions, 2181 flow [2024-06-28 01:18:04,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 232 transitions, 2023 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 01:18:04,646 INFO L231 Difference]: Finished difference. Result has 153 places, 177 transitions, 1474 flow [2024-06-28 01:18:04,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1474, PETRI_PLACES=153, PETRI_TRANSITIONS=177} [2024-06-28 01:18:04,647 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-28 01:18:04,648 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 177 transitions, 1474 flow [2024-06-28 01:18:04,648 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 01:18:04,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:04,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:04,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:18:04,648 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:04,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:04,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1922576268, now seen corresponding path program 2 times [2024-06-28 01:18:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:04,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627284927] [2024-06-28 01:18:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:04,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:05,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627284927] [2024-06-28 01:18:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627284927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:05,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:05,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:05,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129054153] [2024-06-28 01:18:05,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:05,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:05,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:05,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:05,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 177 transitions, 1474 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 01:18:05,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:05,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:05,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:07,100 INFO L124 PetriNetUnfolderBase]: 5298/8057 cut-off events. [2024-06-28 01:18:07,101 INFO L125 PetriNetUnfolderBase]: For 199606/199614 co-relation queries the response was YES. [2024-06-28 01:18:07,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45200 conditions, 8057 events. 5298/8057 cut-off events. For 199606/199614 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 48235 event pairs, 1115 based on Foata normal form. 9/8000 useless extension candidates. Maximal degree in co-relation 45134. Up to 6794 conditions per place. [2024-06-28 01:18:07,171 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 158 selfloop transitions, 87 changer transitions 0/257 dead transitions. [2024-06-28 01:18:07,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 257 transitions, 2662 flow [2024-06-28 01:18:07,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:18:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:18:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-28 01:18:07,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-28 01:18:07,172 INFO L175 Difference]: Start difference. First operand has 153 places, 177 transitions, 1474 flow. Second operand 9 states and 238 transitions. [2024-06-28 01:18:07,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 257 transitions, 2662 flow [2024-06-28 01:18:07,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 257 transitions, 2617 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 01:18:07,316 INFO L231 Difference]: Finished difference. Result has 157 places, 194 transitions, 2019 flow [2024-06-28 01:18:07,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2019, PETRI_PLACES=157, PETRI_TRANSITIONS=194} [2024-06-28 01:18:07,316 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-28 01:18:07,316 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 194 transitions, 2019 flow [2024-06-28 01:18:07,316 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 01:18:07,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:07,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:07,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:18:07,317 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:07,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash -897348878, now seen corresponding path program 4 times [2024-06-28 01:18:07,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:07,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831343315] [2024-06-28 01:18:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:07,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:08,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:08,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831343315] [2024-06-28 01:18:08,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831343315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:08,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:08,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:08,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899462046] [2024-06-28 01:18:08,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:08,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:08,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:08,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:08,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:08,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 194 transitions, 2019 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 01:18:08,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:08,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:08,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:09,653 INFO L124 PetriNetUnfolderBase]: 5353/8122 cut-off events. [2024-06-28 01:18:09,654 INFO L125 PetriNetUnfolderBase]: For 222382/222390 co-relation queries the response was YES. [2024-06-28 01:18:09,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48324 conditions, 8122 events. 5353/8122 cut-off events. For 222382/222390 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 48469 event pairs, 1278 based on Foata normal form. 12/8069 useless extension candidates. Maximal degree in co-relation 48255. Up to 7352 conditions per place. [2024-06-28 01:18:09,726 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 186 selfloop transitions, 59 changer transitions 0/257 dead transitions. [2024-06-28 01:18:09,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 257 transitions, 2934 flow [2024-06-28 01:18:09,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:18:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:18:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 01:18:09,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-06-28 01:18:09,728 INFO L175 Difference]: Start difference. First operand has 157 places, 194 transitions, 2019 flow. Second operand 9 states and 226 transitions. [2024-06-28 01:18:09,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 257 transitions, 2934 flow [2024-06-28 01:18:09,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 257 transitions, 2627 flow, removed 143 selfloop flow, removed 2 redundant places. [2024-06-28 01:18:09,986 INFO L231 Difference]: Finished difference. Result has 167 places, 204 transitions, 2155 flow [2024-06-28 01:18:09,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1778, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2155, PETRI_PLACES=167, PETRI_TRANSITIONS=204} [2024-06-28 01:18:09,990 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 113 predicate places. [2024-06-28 01:18:09,991 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 204 transitions, 2155 flow [2024-06-28 01:18:09,991 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 01:18:09,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:09,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:09,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:18:09,991 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 01:18:09,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:09,992 INFO L85 PathProgramCache]: Analyzing trace with hash -897348754, now seen corresponding path program 3 times [2024-06-28 01:18:09,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:09,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586379150] [2024-06-28 01:18:09,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:09,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:11,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:11,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586379150] [2024-06-28 01:18:11,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586379150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:11,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:11,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:11,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609599272] [2024-06-28 01:18:11,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:11,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:11,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:11,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:11,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:11,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:11,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 204 transitions, 2155 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 01:18:11,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:11,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:11,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:12,967 INFO L124 PetriNetUnfolderBase]: 5852/9135 cut-off events. [2024-06-28 01:18:12,967 INFO L125 PetriNetUnfolderBase]: For 237517/237525 co-relation queries the response was YES. [2024-06-28 01:18:13,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52659 conditions, 9135 events. 5852/9135 cut-off events. For 237517/237525 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 57323 event pairs, 1440 based on Foata normal form. 9/8992 useless extension candidates. Maximal degree in co-relation 52585. Up to 7623 conditions per place. [2024-06-28 01:18:13,066 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 228 selfloop transitions, 68 changer transitions 0/308 dead transitions. [2024-06-28 01:18:13,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 308 transitions, 3571 flow [2024-06-28 01:18:13,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:13,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-06-28 01:18:13,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189393939393939 [2024-06-28 01:18:13,070 INFO L175 Difference]: Start difference. First operand has 167 places, 204 transitions, 2155 flow. Second operand 11 states and 274 transitions. [2024-06-28 01:18:13,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 308 transitions, 3571 flow [2024-06-28 01:18:13,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 308 transitions, 3397 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-28 01:18:13,369 INFO L231 Difference]: Finished difference. Result has 180 places, 240 transitions, 2716 flow [2024-06-28 01:18:13,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2716, PETRI_PLACES=180, PETRI_TRANSITIONS=240} [2024-06-28 01:18:13,369 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2024-06-28 01:18:13,369 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 240 transitions, 2716 flow [2024-06-28 01:18:13,369 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 01:18:13,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:13,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:13,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:18:13,370 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:13,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:13,370 INFO L85 PathProgramCache]: Analyzing trace with hash -897171124, now seen corresponding path program 4 times [2024-06-28 01:18:13,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:13,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775335508] [2024-06-28 01:18:13,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:13,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:14,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:14,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775335508] [2024-06-28 01:18:14,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775335508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:14,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:14,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:14,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594020073] [2024-06-28 01:18:14,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:14,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:14,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:14,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:14,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:14,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:14,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 240 transitions, 2716 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 01:18:14,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:14,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:14,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:15,974 INFO L124 PetriNetUnfolderBase]: 5896/9183 cut-off events. [2024-06-28 01:18:15,974 INFO L125 PetriNetUnfolderBase]: For 253183/253191 co-relation queries the response was YES. [2024-06-28 01:18:16,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55128 conditions, 9183 events. 5896/9183 cut-off events. For 253183/253191 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 57554 event pairs, 1321 based on Foata normal form. 13/9041 useless extension candidates. Maximal degree in co-relation 55047. Up to 7510 conditions per place. [2024-06-28 01:18:16,067 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 201 selfloop transitions, 85 changer transitions 0/298 dead transitions. [2024-06-28 01:18:16,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 298 transitions, 3528 flow [2024-06-28 01:18:16,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:18:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:18:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:18:16,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-28 01:18:16,069 INFO L175 Difference]: Start difference. First operand has 180 places, 240 transitions, 2716 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:18:16,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 298 transitions, 3528 flow [2024-06-28 01:18:16,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 298 transitions, 3394 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-06-28 01:18:16,408 INFO L231 Difference]: Finished difference. Result has 186 places, 243 transitions, 2844 flow [2024-06-28 01:18:16,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2844, PETRI_PLACES=186, PETRI_TRANSITIONS=243} [2024-06-28 01:18:16,409 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 132 predicate places. [2024-06-28 01:18:16,409 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 243 transitions, 2844 flow [2024-06-28 01:18:16,409 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 01:18:16,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:16,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:16,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:18:16,410 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:16,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:16,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1718843696, now seen corresponding path program 1 times [2024-06-28 01:18:16,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:16,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511956218] [2024-06-28 01:18:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:16,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:17,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:17,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511956218] [2024-06-28 01:18:17,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511956218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:17,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:17,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:18:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38502518] [2024-06-28 01:18:17,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:18:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:18:17,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:18:17,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:17,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 243 transitions, 2844 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:17,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:17,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:17,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:18,536 INFO L124 PetriNetUnfolderBase]: 6113/9517 cut-off events. [2024-06-28 01:18:18,536 INFO L125 PetriNetUnfolderBase]: For 265606/265901 co-relation queries the response was YES. [2024-06-28 01:18:18,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56130 conditions, 9517 events. 6113/9517 cut-off events. For 265606/265901 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 59882 event pairs, 1941 based on Foata normal form. 109/9408 useless extension candidates. Maximal degree in co-relation 56047. Up to 8514 conditions per place. [2024-06-28 01:18:18,635 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 206 selfloop transitions, 22 changer transitions 0/276 dead transitions. [2024-06-28 01:18:18,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 276 transitions, 3518 flow [2024-06-28 01:18:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:18:18,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:18:18,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:18:18,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 01:18:18,636 INFO L175 Difference]: Start difference. First operand has 186 places, 243 transitions, 2844 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:18:18,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 276 transitions, 3518 flow [2024-06-28 01:18:19,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 276 transitions, 3286 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:18:19,027 INFO L231 Difference]: Finished difference. Result has 187 places, 253 transitions, 2767 flow [2024-06-28 01:18:19,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2612, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2767, PETRI_PLACES=187, PETRI_TRANSITIONS=253} [2024-06-28 01:18:19,027 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-28 01:18:19,027 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 253 transitions, 2767 flow [2024-06-28 01:18:19,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:19,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:19,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:19,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:18:19,028 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 01:18:19,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:19,029 INFO L85 PathProgramCache]: Analyzing trace with hash -758464040, now seen corresponding path program 5 times [2024-06-28 01:18:19,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:19,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552873088] [2024-06-28 01:18:19,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:19,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:19,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:19,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552873088] [2024-06-28 01:18:19,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552873088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:19,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:19,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:19,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288377463] [2024-06-28 01:18:19,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:19,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:19,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:20,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:20,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 253 transitions, 2767 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 01:18:20,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:20,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:20,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:21,664 INFO L124 PetriNetUnfolderBase]: 6077/9542 cut-off events. [2024-06-28 01:18:21,664 INFO L125 PetriNetUnfolderBase]: For 278108/278128 co-relation queries the response was YES. [2024-06-28 01:18:21,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58180 conditions, 9542 events. 6077/9542 cut-off events. For 278108/278128 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 61073 event pairs, 1810 based on Foata normal form. 4/9369 useless extension candidates. Maximal degree in co-relation 58095. Up to 8240 conditions per place. [2024-06-28 01:18:21,760 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 252 selfloop transitions, 39 changer transitions 0/306 dead transitions. [2024-06-28 01:18:21,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 306 transitions, 3583 flow [2024-06-28 01:18:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:18:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:18:21,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:18:21,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-28 01:18:21,762 INFO L175 Difference]: Start difference. First operand has 187 places, 253 transitions, 2767 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:18:21,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 306 transitions, 3583 flow [2024-06-28 01:18:22,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 306 transitions, 3554 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 01:18:22,048 INFO L231 Difference]: Finished difference. Result has 194 places, 256 transitions, 2910 flow [2024-06-28 01:18:22,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2738, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2910, PETRI_PLACES=194, PETRI_TRANSITIONS=256} [2024-06-28 01:18:22,049 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 140 predicate places. [2024-06-28 01:18:22,049 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 256 transitions, 2910 flow [2024-06-28 01:18:22,049 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 01:18:22,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:22,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:22,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:18:22,050 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 01:18:22,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:22,050 INFO L85 PathProgramCache]: Analyzing trace with hash -758468814, now seen corresponding path program 5 times [2024-06-28 01:18:22,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:22,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914180794] [2024-06-28 01:18:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:22,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:23,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:23,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914180794] [2024-06-28 01:18:23,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914180794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:23,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:23,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:23,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274176681] [2024-06-28 01:18:23,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:23,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:23,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:23,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:23,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:23,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:23,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 256 transitions, 2910 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 01:18:23,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:23,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:23,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:24,733 INFO L124 PetriNetUnfolderBase]: 6080/9559 cut-off events. [2024-06-28 01:18:24,733 INFO L125 PetriNetUnfolderBase]: For 293903/293915 co-relation queries the response was YES. [2024-06-28 01:18:24,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59381 conditions, 9559 events. 6080/9559 cut-off events. For 293903/293915 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 61264 event pairs, 1849 based on Foata normal form. 4/9384 useless extension candidates. Maximal degree in co-relation 59294. Up to 8466 conditions per place. [2024-06-28 01:18:24,844 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 271 selfloop transitions, 22 changer transitions 0/308 dead transitions. [2024-06-28 01:18:24,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 308 transitions, 3719 flow [2024-06-28 01:18:24,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:18:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:18:24,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-28 01:18:24,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-06-28 01:18:24,847 INFO L175 Difference]: Start difference. First operand has 194 places, 256 transitions, 2910 flow. Second operand 9 states and 217 transitions. [2024-06-28 01:18:24,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 308 transitions, 3719 flow [2024-06-28 01:18:25,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 308 transitions, 3571 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 01:18:25,209 INFO L231 Difference]: Finished difference. Result has 197 places, 261 transitions, 2910 flow [2024-06-28 01:18:25,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2762, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2910, PETRI_PLACES=197, PETRI_TRANSITIONS=261} [2024-06-28 01:18:25,210 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2024-06-28 01:18:25,210 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 261 transitions, 2910 flow [2024-06-28 01:18:25,210 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 01:18:25,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:25,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:25,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:18:25,211 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 01:18:25,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:25,211 INFO L85 PathProgramCache]: Analyzing trace with hash -758468690, now seen corresponding path program 6 times [2024-06-28 01:18:25,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:25,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78858019] [2024-06-28 01:18:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:25,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:25,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:26,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:26,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78858019] [2024-06-28 01:18:26,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78858019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:26,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:26,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:26,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833928393] [2024-06-28 01:18:26,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:26,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:26,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:26,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:26,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:26,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:26,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 261 transitions, 2910 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 01:18:26,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:26,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:26,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:27,962 INFO L124 PetriNetUnfolderBase]: 6180/9700 cut-off events. [2024-06-28 01:18:27,962 INFO L125 PetriNetUnfolderBase]: For 318540/318566 co-relation queries the response was YES. [2024-06-28 01:18:28,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61339 conditions, 9700 events. 6180/9700 cut-off events. For 318540/318566 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 62125 event pairs, 1734 based on Foata normal form. 4/9521 useless extension candidates. Maximal degree in co-relation 61250. Up to 8140 conditions per place. [2024-06-28 01:18:28,074 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 251 selfloop transitions, 70 changer transitions 0/336 dead transitions. [2024-06-28 01:18:28,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 336 transitions, 4430 flow [2024-06-28 01:18:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:18:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:18:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-06-28 01:18:28,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189393939393939 [2024-06-28 01:18:28,076 INFO L175 Difference]: Start difference. First operand has 197 places, 261 transitions, 2910 flow. Second operand 11 states and 274 transitions. [2024-06-28 01:18:28,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 336 transitions, 4430 flow [2024-06-28 01:18:28,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 336 transitions, 4329 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:18:28,496 INFO L231 Difference]: Finished difference. Result has 203 places, 270 transitions, 3227 flow [2024-06-28 01:18:28,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2809, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3227, PETRI_PLACES=203, PETRI_TRANSITIONS=270} [2024-06-28 01:18:28,497 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 149 predicate places. [2024-06-28 01:18:28,497 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 270 transitions, 3227 flow [2024-06-28 01:18:28,497 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 01:18:28,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:28,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:28,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:18:28,497 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 01:18:28,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash 598013986, now seen corresponding path program 1 times [2024-06-28 01:18:28,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840560561] [2024-06-28 01:18:28,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:28,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:29,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:29,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840560561] [2024-06-28 01:18:29,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840560561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:29,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:29,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:29,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084937183] [2024-06-28 01:18:29,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:29,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:29,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:29,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:29,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:29,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:18:29,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 270 transitions, 3227 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 01:18:29,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:29,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:18:29,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:31,340 INFO L124 PetriNetUnfolderBase]: 6823/10620 cut-off events. [2024-06-28 01:18:31,340 INFO L125 PetriNetUnfolderBase]: For 349367/349379 co-relation queries the response was YES. [2024-06-28 01:18:31,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67575 conditions, 10620 events. 6823/10620 cut-off events. For 349367/349379 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 66753 event pairs, 2184 based on Foata normal form. 2/10418 useless extension candidates. Maximal degree in co-relation 67484. Up to 9478 conditions per place. [2024-06-28 01:18:31,443 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 274 selfloop transitions, 31 changer transitions 0/318 dead transitions. [2024-06-28 01:18:31,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 318 transitions, 4073 flow [2024-06-28 01:18:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:18:31,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:18:31,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 01:18:31,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-06-28 01:18:31,444 INFO L175 Difference]: Start difference. First operand has 203 places, 270 transitions, 3227 flow. Second operand 8 states and 190 transitions. [2024-06-28 01:18:31,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 318 transitions, 4073 flow [2024-06-28 01:18:31,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 318 transitions, 3787 flow, removed 100 selfloop flow, removed 6 redundant places. [2024-06-28 01:18:31,799 INFO L231 Difference]: Finished difference. Result has 205 places, 276 transitions, 3141 flow [2024-06-28 01:18:31,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3141, PETRI_PLACES=205, PETRI_TRANSITIONS=276} [2024-06-28 01:18:31,800 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-28 01:18:31,800 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 276 transitions, 3141 flow [2024-06-28 01:18:31,800 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 01:18:31,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:31,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:31,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:18:31,801 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 01:18:31,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:31,801 INFO L85 PathProgramCache]: Analyzing trace with hash -758291060, now seen corresponding path program 7 times [2024-06-28 01:18:31,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:31,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718896871] [2024-06-28 01:18:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:31,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:32,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:32,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718896871] [2024-06-28 01:18:32,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718896871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:32,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:32,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:32,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716355942] [2024-06-28 01:18:32,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:32,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:32,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:32,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:32,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:32,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 276 transitions, 3141 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 01:18:32,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:32,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:32,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:34,726 INFO L124 PetriNetUnfolderBase]: 6266/9856 cut-off events. [2024-06-28 01:18:34,727 INFO L125 PetriNetUnfolderBase]: For 334953/334979 co-relation queries the response was YES. [2024-06-28 01:18:34,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62657 conditions, 9856 events. 6266/9856 cut-off events. For 334953/334979 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 63590 event pairs, 1806 based on Foata normal form. 4/9667 useless extension candidates. Maximal degree in co-relation 62565. Up to 8475 conditions per place. [2024-06-28 01:18:34,841 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 274 selfloop transitions, 40 changer transitions 0/329 dead transitions. [2024-06-28 01:18:34,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 329 transitions, 3987 flow [2024-06-28 01:18:34,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:18:34,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:18:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 01:18:34,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:18:34,843 INFO L175 Difference]: Start difference. First operand has 205 places, 276 transitions, 3141 flow. Second operand 9 states and 225 transitions. [2024-06-28 01:18:34,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 329 transitions, 3987 flow [2024-06-28 01:18:35,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 329 transitions, 3923 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:18:35,192 INFO L231 Difference]: Finished difference. Result has 208 places, 279 transitions, 3235 flow [2024-06-28 01:18:35,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3235, PETRI_PLACES=208, PETRI_TRANSITIONS=279} [2024-06-28 01:18:35,197 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 154 predicate places. [2024-06-28 01:18:35,197 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 279 transitions, 3235 flow [2024-06-28 01:18:35,198 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 01:18:35,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:35,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:35,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:18:35,198 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 01:18:35,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:35,199 INFO L85 PathProgramCache]: Analyzing trace with hash 588513602, now seen corresponding path program 8 times [2024-06-28 01:18:35,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:35,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771217340] [2024-06-28 01:18:35,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:35,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:36,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:36,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771217340] [2024-06-28 01:18:36,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771217340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:36,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:36,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:36,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521993619] [2024-06-28 01:18:36,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:36,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:36,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:36,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:36,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:36,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:36,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 279 transitions, 3235 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 01:18:36,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:36,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:36,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:37,937 INFO L124 PetriNetUnfolderBase]: 6292/9912 cut-off events. [2024-06-28 01:18:37,937 INFO L125 PetriNetUnfolderBase]: For 347413/347439 co-relation queries the response was YES. [2024-06-28 01:18:38,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63387 conditions, 9912 events. 6292/9912 cut-off events. For 347413/347439 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 64117 event pairs, 1850 based on Foata normal form. 6/9719 useless extension candidates. Maximal degree in co-relation 63294. Up to 8625 conditions per place. [2024-06-28 01:18:38,053 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 285 selfloop transitions, 29 changer transitions 0/329 dead transitions. [2024-06-28 01:18:38,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 329 transitions, 4071 flow [2024-06-28 01:18:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:18:38,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:18:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 01:18:38,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 01:18:38,057 INFO L175 Difference]: Start difference. First operand has 208 places, 279 transitions, 3235 flow. Second operand 9 states and 219 transitions. [2024-06-28 01:18:38,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 329 transitions, 4071 flow [2024-06-28 01:18:38,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 329 transitions, 3943 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 01:18:38,474 INFO L231 Difference]: Finished difference. Result has 210 places, 282 transitions, 3249 flow [2024-06-28 01:18:38,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3249, PETRI_PLACES=210, PETRI_TRANSITIONS=282} [2024-06-28 01:18:38,475 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-28 01:18:38,475 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 282 transitions, 3249 flow [2024-06-28 01:18:38,476 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 01:18:38,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:38,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:38,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:18:38,476 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:38,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:38,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1732146416, now seen corresponding path program 2 times [2024-06-28 01:18:38,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:38,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121260795] [2024-06-28 01:18:38,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:38,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:39,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:39,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121260795] [2024-06-28 01:18:39,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121260795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:39,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:39,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:18:39,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167415699] [2024-06-28 01:18:39,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:39,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:18:39,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:39,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:18:39,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:18:39,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:39,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 282 transitions, 3249 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:39,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:39,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:39,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:40,799 INFO L124 PetriNetUnfolderBase]: 6504/10185 cut-off events. [2024-06-28 01:18:40,799 INFO L125 PetriNetUnfolderBase]: For 359582/359954 co-relation queries the response was YES. [2024-06-28 01:18:40,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63129 conditions, 10185 events. 6504/10185 cut-off events. For 359582/359954 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 65428 event pairs, 2288 based on Foata normal form. 153/10085 useless extension candidates. Maximal degree in co-relation 63035. Up to 9102 conditions per place. [2024-06-28 01:18:40,922 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 230 selfloop transitions, 15 changer transitions 0/298 dead transitions. [2024-06-28 01:18:40,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 298 transitions, 3783 flow [2024-06-28 01:18:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:18:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:18:40,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 01:18:40,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 01:18:40,924 INFO L175 Difference]: Start difference. First operand has 210 places, 282 transitions, 3249 flow. Second operand 7 states and 152 transitions. [2024-06-28 01:18:40,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 298 transitions, 3783 flow [2024-06-28 01:18:41,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 298 transitions, 3657 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 01:18:41,428 INFO L231 Difference]: Finished difference. Result has 210 places, 282 transitions, 3159 flow [2024-06-28 01:18:41,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3159, PETRI_PLACES=210, PETRI_TRANSITIONS=282} [2024-06-28 01:18:41,429 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-28 01:18:41,429 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 282 transitions, 3159 flow [2024-06-28 01:18:41,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:41,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:41,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:41,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:18:41,433 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:41,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1000706258, now seen corresponding path program 9 times [2024-06-28 01:18:41,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:41,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891616803] [2024-06-28 01:18:41,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:41,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:42,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:42,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891616803] [2024-06-28 01:18:42,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891616803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:42,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:42,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:18:42,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851895132] [2024-06-28 01:18:42,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:42,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:18:42,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:42,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:18:42,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:18:42,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:42,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 282 transitions, 3159 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 01:18:42,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:42,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:42,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:44,613 INFO L124 PetriNetUnfolderBase]: 7235/11550 cut-off events. [2024-06-28 01:18:44,614 INFO L125 PetriNetUnfolderBase]: For 368735/368749 co-relation queries the response was YES. [2024-06-28 01:18:44,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72031 conditions, 11550 events. 7235/11550 cut-off events. For 368735/368749 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 77135 event pairs, 1479 based on Foata normal form. 4/11295 useless extension candidates. Maximal degree in co-relation 71936. Up to 8774 conditions per place. [2024-06-28 01:18:44,765 INFO L140 encePairwiseOnDemand]: 31/48 looper letters, 307 selfloop transitions, 185 changer transitions 0/507 dead transitions. [2024-06-28 01:18:44,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 507 transitions, 6792 flow [2024-06-28 01:18:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:18:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:18:44,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 269 transitions. [2024-06-28 01:18:44,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5604166666666667 [2024-06-28 01:18:44,771 INFO L175 Difference]: Start difference. First operand has 210 places, 282 transitions, 3159 flow. Second operand 10 states and 269 transitions. [2024-06-28 01:18:44,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 507 transitions, 6792 flow [2024-06-28 01:18:45,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 507 transitions, 6747 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:18:45,321 INFO L231 Difference]: Finished difference. Result has 219 places, 407 transitions, 5549 flow [2024-06-28 01:18:45,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5549, PETRI_PLACES=219, PETRI_TRANSITIONS=407} [2024-06-28 01:18:45,323 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 165 predicate places. [2024-06-28 01:18:45,324 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 407 transitions, 5549 flow [2024-06-28 01:18:45,324 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 01:18:45,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:45,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:45,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:18:45,324 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 01:18:45,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:45,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1672078320, now seen corresponding path program 3 times [2024-06-28 01:18:45,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:45,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551696779] [2024-06-28 01:18:45,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:45,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:45,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:45,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551696779] [2024-06-28 01:18:45,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551696779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:45,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:45,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:18:45,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908124497] [2024-06-28 01:18:45,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:45,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:18:45,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:45,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:18:45,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:18:45,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:45,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 407 transitions, 5549 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:45,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:45,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:45,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:47,862 INFO L124 PetriNetUnfolderBase]: 7597/12122 cut-off events. [2024-06-28 01:18:47,863 INFO L125 PetriNetUnfolderBase]: For 410292/410981 co-relation queries the response was YES. [2024-06-28 01:18:47,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78888 conditions, 12122 events. 7597/12122 cut-off events. For 410292/410981 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 80985 event pairs, 2145 based on Foata normal form. 191/11940 useless extension candidates. Maximal degree in co-relation 78788. Up to 10381 conditions per place. [2024-06-28 01:18:48,009 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 356 selfloop transitions, 48 changer transitions 0/460 dead transitions. [2024-06-28 01:18:48,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 460 transitions, 6659 flow [2024-06-28 01:18:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:18:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:18:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:18:48,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:18:48,011 INFO L175 Difference]: Start difference. First operand has 219 places, 407 transitions, 5549 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:18:48,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 460 transitions, 6659 flow [2024-06-28 01:18:48,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 460 transitions, 6530 flow, removed 54 selfloop flow, removed 2 redundant places. [2024-06-28 01:18:48,664 INFO L231 Difference]: Finished difference. Result has 225 places, 432 transitions, 5783 flow [2024-06-28 01:18:48,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5428, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5783, PETRI_PLACES=225, PETRI_TRANSITIONS=432} [2024-06-28 01:18:48,665 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 171 predicate places. [2024-06-28 01:18:48,665 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 432 transitions, 5783 flow [2024-06-28 01:18:48,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:48,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:48,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:48,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:18:48,666 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 01:18:48,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:48,666 INFO L85 PathProgramCache]: Analyzing trace with hash -386003385, now seen corresponding path program 1 times [2024-06-28 01:18:48,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:48,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681944419] [2024-06-28 01:18:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:48,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:49,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:49,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681944419] [2024-06-28 01:18:49,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681944419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:49,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:49,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:18:49,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690875935] [2024-06-28 01:18:49,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:49,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:18:49,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:49,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:18:49,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:18:49,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:18:49,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 432 transitions, 5783 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 01:18:49,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:49,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:18:49,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:51,343 INFO L124 PetriNetUnfolderBase]: 8696/13425 cut-off events. [2024-06-28 01:18:51,343 INFO L125 PetriNetUnfolderBase]: For 425408/425408 co-relation queries the response was YES. [2024-06-28 01:18:51,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89573 conditions, 13425 events. 8696/13425 cut-off events. For 425408/425408 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 85808 event pairs, 2699 based on Foata normal form. 1/13154 useless extension candidates. Maximal degree in co-relation 89470. Up to 12210 conditions per place. [2024-06-28 01:18:51,814 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 428 selfloop transitions, 25 changer transitions 0/461 dead transitions. [2024-06-28 01:18:51,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 461 transitions, 6963 flow [2024-06-28 01:18:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:18:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:18:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:18:51,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:18:51,815 INFO L175 Difference]: Start difference. First operand has 225 places, 432 transitions, 5783 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:18:51,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 461 transitions, 6963 flow [2024-06-28 01:18:52,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 461 transitions, 6916 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 01:18:52,701 INFO L231 Difference]: Finished difference. Result has 229 places, 438 transitions, 5891 flow [2024-06-28 01:18:52,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5736, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5891, PETRI_PLACES=229, PETRI_TRANSITIONS=438} [2024-06-28 01:18:52,702 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-28 01:18:52,702 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 438 transitions, 5891 flow [2024-06-28 01:18:52,702 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 01:18:52,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:52,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:52,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:18:52,702 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 01:18:52,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:52,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2047131757, now seen corresponding path program 2 times [2024-06-28 01:18:52,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:52,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957456440] [2024-06-28 01:18:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:52,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:18:53,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:53,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957456440] [2024-06-28 01:18:53,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957456440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:53,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:53,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:18:53,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794070112] [2024-06-28 01:18:53,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:53,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:18:53,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:53,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:18:53,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:18:53,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:18:53,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 438 transitions, 5891 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 01:18:53,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:53,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:18:53,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:18:55,856 INFO L124 PetriNetUnfolderBase]: 8693/13425 cut-off events. [2024-06-28 01:18:55,856 INFO L125 PetriNetUnfolderBase]: For 440534/440536 co-relation queries the response was YES. [2024-06-28 01:18:55,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90521 conditions, 13425 events. 8693/13425 cut-off events. For 440534/440536 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 85940 event pairs, 2699 based on Foata normal form. 3/13155 useless extension candidates. Maximal degree in co-relation 90416. Up to 12207 conditions per place. [2024-06-28 01:18:56,005 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 424 selfloop transitions, 25 changer transitions 0/457 dead transitions. [2024-06-28 01:18:56,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 457 transitions, 6869 flow [2024-06-28 01:18:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:18:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:18:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 01:18:56,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:18:56,006 INFO L175 Difference]: Start difference. First operand has 229 places, 438 transitions, 5891 flow. Second operand 6 states and 132 transitions. [2024-06-28 01:18:56,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 457 transitions, 6869 flow [2024-06-28 01:18:56,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 457 transitions, 6787 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-28 01:18:56,617 INFO L231 Difference]: Finished difference. Result has 233 places, 438 transitions, 5866 flow [2024-06-28 01:18:56,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5809, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5866, PETRI_PLACES=233, PETRI_TRANSITIONS=438} [2024-06-28 01:18:56,617 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 179 predicate places. [2024-06-28 01:18:56,618 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 438 transitions, 5866 flow [2024-06-28 01:18:56,618 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 01:18:56,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:18:56,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:18:56,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:18:56,618 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:18:56,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:18:56,619 INFO L85 PathProgramCache]: Analyzing trace with hash 102550489, now seen corresponding path program 1 times [2024-06-28 01:18:56,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:18:56,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328940158] [2024-06-28 01:18:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:18:56,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:18:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:18:57,888 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 01:18:57,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:18:57,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328940158] [2024-06-28 01:18:57,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328940158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:18:57,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:18:57,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:18:57,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514271178] [2024-06-28 01:18:57,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:18:57,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:18:57,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:18:57,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:18:57,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:18:58,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:18:58,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 438 transitions, 5866 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:18:58,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:18:58,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:18:58,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:01,053 INFO L124 PetriNetUnfolderBase]: 7946/12976 cut-off events. [2024-06-28 01:19:01,054 INFO L125 PetriNetUnfolderBase]: For 524354/524487 co-relation queries the response was YES. [2024-06-28 01:19:01,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90058 conditions, 12976 events. 7946/12976 cut-off events. For 524354/524487 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 89992 event pairs, 1609 based on Foata normal form. 22/12572 useless extension candidates. Maximal degree in co-relation 89951. Up to 9989 conditions per place. [2024-06-28 01:19:01,207 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 447 selfloop transitions, 70 changer transitions 0/540 dead transitions. [2024-06-28 01:19:01,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 540 transitions, 7702 flow [2024-06-28 01:19:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:01,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 290 transitions. [2024-06-28 01:19:01,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5492424242424242 [2024-06-28 01:19:01,211 INFO L175 Difference]: Start difference. First operand has 233 places, 438 transitions, 5866 flow. Second operand 11 states and 290 transitions. [2024-06-28 01:19:01,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 540 transitions, 7702 flow [2024-06-28 01:19:01,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 540 transitions, 7632 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:19:01,972 INFO L231 Difference]: Finished difference. Result has 241 places, 445 transitions, 6104 flow [2024-06-28 01:19:01,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5796, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6104, PETRI_PLACES=241, PETRI_TRANSITIONS=445} [2024-06-28 01:19:01,973 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 187 predicate places. [2024-06-28 01:19:01,973 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 445 transitions, 6104 flow [2024-06-28 01:19:01,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:01,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:01,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:01,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:19:01,973 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:01,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1413757453, now seen corresponding path program 2 times [2024-06-28 01:19:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:01,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919354641] [2024-06-28 01:19:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:01,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:03,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:03,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919354641] [2024-06-28 01:19:03,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919354641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:03,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:03,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:03,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820933754] [2024-06-28 01:19:03,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:03,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:03,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:03,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:03,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:03,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:19:03,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 445 transitions, 6104 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:03,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:03,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:19:03,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:06,590 INFO L124 PetriNetUnfolderBase]: 7977/12961 cut-off events. [2024-06-28 01:19:06,590 INFO L125 PetriNetUnfolderBase]: For 556742/556863 co-relation queries the response was YES. [2024-06-28 01:19:06,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92114 conditions, 12961 events. 7977/12961 cut-off events. For 556742/556863 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 90048 event pairs, 1960 based on Foata normal form. 30/12604 useless extension candidates. Maximal degree in co-relation 92004. Up to 10465 conditions per place. [2024-06-28 01:19:06,903 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 454 selfloop transitions, 67 changer transitions 0/544 dead transitions. [2024-06-28 01:19:06,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 544 transitions, 7711 flow [2024-06-28 01:19:06,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:19:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:19:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 305 transitions. [2024-06-28 01:19:06,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295138888888888 [2024-06-28 01:19:06,905 INFO L175 Difference]: Start difference. First operand has 241 places, 445 transitions, 6104 flow. Second operand 12 states and 305 transitions. [2024-06-28 01:19:06,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 544 transitions, 7711 flow [2024-06-28 01:19:07,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 544 transitions, 7594 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 01:19:07,750 INFO L231 Difference]: Finished difference. Result has 248 places, 446 transitions, 6189 flow [2024-06-28 01:19:07,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5995, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6189, PETRI_PLACES=248, PETRI_TRANSITIONS=446} [2024-06-28 01:19:07,751 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 194 predicate places. [2024-06-28 01:19:07,751 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 446 transitions, 6189 flow [2024-06-28 01:19:07,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:07,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:07,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:07,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:19:07,751 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:07,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash 104424439, now seen corresponding path program 3 times [2024-06-28 01:19:07,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:07,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575622099] [2024-06-28 01:19:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:07,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:09,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:09,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575622099] [2024-06-28 01:19:09,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575622099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:09,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:09,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:09,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633390917] [2024-06-28 01:19:09,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:09,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:09,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:09,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:09,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:09,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:19:09,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 446 transitions, 6189 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:09,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:09,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:19:09,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:12,273 INFO L124 PetriNetUnfolderBase]: 7949/12887 cut-off events. [2024-06-28 01:19:12,273 INFO L125 PetriNetUnfolderBase]: For 527703/527824 co-relation queries the response was YES. [2024-06-28 01:19:12,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90646 conditions, 12887 events. 7949/12887 cut-off events. For 527703/527824 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 89231 event pairs, 1898 based on Foata normal form. 22/12528 useless extension candidates. Maximal degree in co-relation 90534. Up to 10163 conditions per place. [2024-06-28 01:19:12,430 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 446 selfloop transitions, 69 changer transitions 0/538 dead transitions. [2024-06-28 01:19:12,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 538 transitions, 7708 flow [2024-06-28 01:19:12,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:12,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 286 transitions. [2024-06-28 01:19:12,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:19:12,432 INFO L175 Difference]: Start difference. First operand has 248 places, 446 transitions, 6189 flow. Second operand 11 states and 286 transitions. [2024-06-28 01:19:12,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 538 transitions, 7708 flow [2024-06-28 01:19:13,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 538 transitions, 7561 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 01:19:13,265 INFO L231 Difference]: Finished difference. Result has 250 places, 447 transitions, 6208 flow [2024-06-28 01:19:13,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6042, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6208, PETRI_PLACES=250, PETRI_TRANSITIONS=447} [2024-06-28 01:19:13,266 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 196 predicate places. [2024-06-28 01:19:13,266 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 447 transitions, 6208 flow [2024-06-28 01:19:13,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:13,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:13,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:13,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:19:13,272 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:13,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:13,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2042500139, now seen corresponding path program 4 times [2024-06-28 01:19:13,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:13,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645097761] [2024-06-28 01:19:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:13,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:14,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:14,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645097761] [2024-06-28 01:19:14,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645097761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:14,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:14,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:14,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034070269] [2024-06-28 01:19:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:14,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:14,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:14,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:14,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:14,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:19:14,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 447 transitions, 6208 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:14,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:14,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:19:14,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:17,908 INFO L124 PetriNetUnfolderBase]: 8103/13101 cut-off events. [2024-06-28 01:19:17,908 INFO L125 PetriNetUnfolderBase]: For 560978/561040 co-relation queries the response was YES. [2024-06-28 01:19:18,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93370 conditions, 13101 events. 8103/13101 cut-off events. For 560978/561040 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 90756 event pairs, 1825 based on Foata normal form. 24/12798 useless extension candidates. Maximal degree in co-relation 93256. Up to 9664 conditions per place. [2024-06-28 01:19:18,060 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 331 selfloop transitions, 177 changer transitions 0/531 dead transitions. [2024-06-28 01:19:18,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 531 transitions, 7731 flow [2024-06-28 01:19:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:18,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:18,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-06-28 01:19:18,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:19:18,062 INFO L175 Difference]: Start difference. First operand has 250 places, 447 transitions, 6208 flow. Second operand 10 states and 260 transitions. [2024-06-28 01:19:18,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 531 transitions, 7731 flow [2024-06-28 01:19:18,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 531 transitions, 7593 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:19:18,821 INFO L231 Difference]: Finished difference. Result has 252 places, 448 transitions, 6495 flow [2024-06-28 01:19:18,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6070, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6495, PETRI_PLACES=252, PETRI_TRANSITIONS=448} [2024-06-28 01:19:18,822 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 01:19:18,822 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 448 transitions, 6495 flow [2024-06-28 01:19:18,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:18,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:18,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:18,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:19:18,822 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:18,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:18,823 INFO L85 PathProgramCache]: Analyzing trace with hash -524099046, now seen corresponding path program 1 times [2024-06-28 01:19:18,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:18,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699739707] [2024-06-28 01:19:18,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:18,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:20,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:20,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699739707] [2024-06-28 01:19:20,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699739707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:20,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:20,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:20,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292131120] [2024-06-28 01:19:20,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:20,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:20,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:20,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:20,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:20,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:19:20,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 448 transitions, 6495 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 01:19:20,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:20,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:19:20,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:23,528 INFO L124 PetriNetUnfolderBase]: 9191/14428 cut-off events. [2024-06-28 01:19:23,528 INFO L125 PetriNetUnfolderBase]: For 579263/579327 co-relation queries the response was YES. [2024-06-28 01:19:23,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103197 conditions, 14428 events. 9191/14428 cut-off events. For 579263/579327 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 96206 event pairs, 2177 based on Foata normal form. 10/14089 useless extension candidates. Maximal degree in co-relation 103082. Up to 12340 conditions per place. [2024-06-28 01:19:23,689 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 433 selfloop transitions, 78 changer transitions 0/532 dead transitions. [2024-06-28 01:19:23,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 532 transitions, 8101 flow [2024-06-28 01:19:23,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:19:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:19:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:19:23,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-28 01:19:23,690 INFO L175 Difference]: Start difference. First operand has 252 places, 448 transitions, 6495 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:19:23,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 532 transitions, 8101 flow [2024-06-28 01:19:24,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 532 transitions, 7720 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:19:24,780 INFO L231 Difference]: Finished difference. Result has 254 places, 459 transitions, 6508 flow [2024-06-28 01:19:24,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6130, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6508, PETRI_PLACES=254, PETRI_TRANSITIONS=459} [2024-06-28 01:19:24,781 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-28 01:19:24,781 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 459 transitions, 6508 flow [2024-06-28 01:19:24,781 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 01:19:24,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:24,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:24,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:19:24,782 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:24,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2048010389, now seen corresponding path program 5 times [2024-06-28 01:19:24,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:24,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349785800] [2024-06-28 01:19:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:24,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:25,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:25,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349785800] [2024-06-28 01:19:25,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349785800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:25,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:25,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:25,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151293243] [2024-06-28 01:19:25,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:25,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:25,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:25,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:25,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:26,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:19:26,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 459 transitions, 6508 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:26,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:26,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:19:26,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:29,175 INFO L124 PetriNetUnfolderBase]: 8709/13992 cut-off events. [2024-06-28 01:19:29,175 INFO L125 PetriNetUnfolderBase]: For 646850/646924 co-relation queries the response was YES. [2024-06-28 01:19:29,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103487 conditions, 13992 events. 8709/13992 cut-off events. For 646850/646924 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 96992 event pairs, 1930 based on Foata normal form. 16/13692 useless extension candidates. Maximal degree in co-relation 103370. Up to 9399 conditions per place. [2024-06-28 01:19:29,378 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 254 selfloop transitions, 273 changer transitions 0/551 dead transitions. [2024-06-28 01:19:29,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 551 transitions, 8654 flow [2024-06-28 01:19:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:29,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-06-28 01:19:29,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 01:19:29,380 INFO L175 Difference]: Start difference. First operand has 254 places, 459 transitions, 6508 flow. Second operand 10 states and 270 transitions. [2024-06-28 01:19:29,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 551 transitions, 8654 flow [2024-06-28 01:19:30,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 551 transitions, 8440 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 01:19:30,797 INFO L231 Difference]: Finished difference. Result has 260 places, 465 transitions, 7201 flow [2024-06-28 01:19:30,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6294, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=268, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7201, PETRI_PLACES=260, PETRI_TRANSITIONS=465} [2024-06-28 01:19:30,797 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-06-28 01:19:30,798 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 465 transitions, 7201 flow [2024-06-28 01:19:30,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:30,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:30,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:30,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:19:30,798 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:19:30,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:30,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2047862519, now seen corresponding path program 6 times [2024-06-28 01:19:30,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:30,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931235644] [2024-06-28 01:19:30,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:30,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:32,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:32,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931235644] [2024-06-28 01:19:32,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931235644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:32,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:32,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:32,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716369272] [2024-06-28 01:19:32,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:32,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:32,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:32,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:19:32,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 465 transitions, 7201 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:32,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:32,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:19:32,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:35,432 INFO L124 PetriNetUnfolderBase]: 9007/14696 cut-off events. [2024-06-28 01:19:35,433 INFO L125 PetriNetUnfolderBase]: For 753577/753657 co-relation queries the response was YES. [2024-06-28 01:19:35,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111868 conditions, 14696 events. 9007/14696 cut-off events. For 753577/753657 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 104836 event pairs, 2213 based on Foata normal form. 36/14340 useless extension candidates. Maximal degree in co-relation 111748. Up to 10861 conditions per place. [2024-06-28 01:19:35,618 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 341 selfloop transitions, 187 changer transitions 0/552 dead transitions. [2024-06-28 01:19:35,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 552 transitions, 8846 flow [2024-06-28 01:19:35,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:19:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:19:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-28 01:19:35,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-06-28 01:19:35,620 INFO L175 Difference]: Start difference. First operand has 260 places, 465 transitions, 7201 flow. Second operand 10 states and 262 transitions. [2024-06-28 01:19:35,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 552 transitions, 8846 flow [2024-06-28 01:19:37,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 552 transitions, 8454 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-28 01:19:37,089 INFO L231 Difference]: Finished difference. Result has 265 places, 467 transitions, 7326 flow [2024-06-28 01:19:37,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6823, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7326, PETRI_PLACES=265, PETRI_TRANSITIONS=467} [2024-06-28 01:19:37,089 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 211 predicate places. [2024-06-28 01:19:37,090 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 467 transitions, 7326 flow [2024-06-28 01:19:37,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:37,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:19:37,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:19:37,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:19:37,090 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 01:19:37,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:19:37,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2048006669, now seen corresponding path program 7 times [2024-06-28 01:19:37,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:19:37,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291743996] [2024-06-28 01:19:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:19:37,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:19:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:19:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:19:38,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:19:38,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291743996] [2024-06-28 01:19:38,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291743996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:19:38,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:19:38,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:19:38,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193918323] [2024-06-28 01:19:38,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:19:38,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:19:38,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:19:38,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:19:38,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:19:38,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:19:38,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 467 transitions, 7326 flow. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:19:38,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:19:38,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:19:38,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:19:41,900 INFO L124 PetriNetUnfolderBase]: 9160/14627 cut-off events. [2024-06-28 01:19:41,901 INFO L125 PetriNetUnfolderBase]: For 734320/734390 co-relation queries the response was YES. [2024-06-28 01:19:42,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113856 conditions, 14627 events. 9160/14627 cut-off events. For 734320/734390 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 101972 event pairs, 2422 based on Foata normal form. 20/14351 useless extension candidates. Maximal degree in co-relation 113734. Up to 11226 conditions per place. [2024-06-28 01:19:42,135 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 291 selfloop transitions, 239 changer transitions 0/554 dead transitions. [2024-06-28 01:19:42,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 554 transitions, 9143 flow [2024-06-28 01:19:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:19:42,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:19:42,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-06-28 01:19:42,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265151515151515 [2024-06-28 01:19:42,136 INFO L175 Difference]: Start difference. First operand has 265 places, 467 transitions, 7326 flow. Second operand 11 states and 278 transitions. [2024-06-28 01:19:42,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 554 transitions, 9143 flow