./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.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/mix045_power.oepc_pso.oepc_rmo.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/mix045_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix045_power.oepc_pso.oepc_rmo.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 01:38:45,223 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:38:45,303 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:38:45,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:38:45,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:38:45,334 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:38:45,335 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:38:45,335 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:38:45,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:38:45,338 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:38:45,339 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:38:45,339 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:38:45,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:38:45,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:38:45,341 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:38:45,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:38:45,341 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:38:45,341 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:38:45,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:38:45,342 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:38:45,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:38:45,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:38:45,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:38:45,343 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:38:45,343 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:38:45,343 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:38:45,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:38:45,343 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:38:45,344 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:38:45,344 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:38:45,345 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:38:45,345 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:38:45,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:38:45,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:38:45,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:38:45,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:38:45,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:38:45,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:38:45,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:38:45,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:38:45,346 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:38:45,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:38:45,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:38:45,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:38:45,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:38:45,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:38:45,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:38:45,592 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:38:45,593 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:38:45,594 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:38:46,689 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:38:46,929 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:38:46,934 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix045_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:38:46,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91715bd5/d9a96533f70f4798bdc7026306c63a4e/FLAGb8866ff56 [2024-06-28 01:38:46,987 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a91715bd5/d9a96533f70f4798bdc7026306c63a4e [2024-06-28 01:38:46,997 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:38:46,998 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:38:47,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix045_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 01:38:47,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:38:47,173 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:38:47,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:38:47,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:38:47,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:38:47,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:38:46" (1/2) ... [2024-06-28 01:38:47,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fa003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:38:47, skipping insertion in model container [2024-06-28 01:38:47,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:38:46" (1/2) ... [2024-06-28 01:38:47,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d4dd57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:38:47, skipping insertion in model container [2024-06-28 01:38:47,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:38:47" (2/2) ... [2024-06-28 01:38:47,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@240fa003 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:47, skipping insertion in model container [2024-06-28 01:38:47,181 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:38:47" (2/2) ... [2024-06-28 01:38:47,182 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:38:47,247 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:38:47,249 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((! multithreaded || a$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-28 01:38:47,249 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ((((((((((((((((((! multithreaded || a$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-28 01:38:47,249 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ((((((((((((((((((! multithreaded || a$read_delayed_var == 0) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2)) [2024-06-28 01:38:47,249 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:38:47,250 INFO L106 edCorrectnessWitness]: ghost_update [L842-L842] multithreaded = 1; [2024-06-28 01:38:47,289 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:38:47,442 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/mix045_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-28 01:38:47,557 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:38:47,564 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:38:47,599 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/mix045_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:38:47,681 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:38:47,717 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:38:47,718 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:38:47 WrapperNode [2024-06-28 01:38:47,718 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:38:47,719 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:38:47,719 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:38:47,719 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:38:47,724 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,740 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,772 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2024-06-28 01:38:47,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:38:47,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:38:47,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:38:47,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:38:47,784 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,784 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,794 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,815 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 01:38:47,816 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,816 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,835 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,837 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,841 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,845 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:38:47,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:38:47,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:38:47,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:38:47,853 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 01:38:47" (1/1) ... [2024-06-28 01:38:47,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:38:47,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:38:47,902 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 01:38:47,907 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 01:38:47,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:38:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:38:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:38:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:38:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:38:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:38:47,930 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:38:47,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:38:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:38:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:38:47,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:38:47,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:38:47,932 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 01:38:48,043 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:38:48,046 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:38:48,385 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:38:48,386 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:38:48,515 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:38:48,515 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:38:48,515 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:38:48 BoogieIcfgContainer [2024-06-28 01:38:48,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:38:48,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:38:48,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:38:48,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:38:48,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:38:46" (1/4) ... [2024-06-28 01:38:48,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160e304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:38:48, skipping insertion in model container [2024-06-28 01:38:48,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:38:47" (2/4) ... [2024-06-28 01:38:48,523 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160e304 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:38:48, skipping insertion in model container [2024-06-28 01:38:48,523 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 01:38:47" (3/4) ... [2024-06-28 01:38:48,524 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160e304 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:38:48, skipping insertion in model container [2024-06-28 01:38:48,524 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:38:48" (4/4) ... [2024-06-28 01:38:48,525 INFO L112 eAbstractionObserver]: Analyzing ICFG mix045_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 01:38:48,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:38:48,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:38:48,539 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:38:48,602 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:38:48,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:38:48,652 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:38:48,653 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:38:48,657 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 79 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 01:38:48,657 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:38:48,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:38:48,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:38:48,676 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;@2302fa39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:38:48,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:38:48,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:38:48,679 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:38:48,679 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:38:48,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:48,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:38:48,680 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 01:38:48,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash 358219913, now seen corresponding path program 1 times [2024-06-28 01:38:48,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:48,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127080820] [2024-06-28 01:38:48,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:48,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:49,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:49,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127080820] [2024-06-28 01:38:49,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127080820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:49,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:49,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:38:49,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721098390] [2024-06-28 01:38:49,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:49,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:38:49,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:49,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:38:49,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:38:49,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:49,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:49,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:49,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:49,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:50,612 INFO L124 PetriNetUnfolderBase]: 5249/8452 cut-off events. [2024-06-28 01:38:50,612 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-28 01:38:50,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16058 conditions, 8452 events. 5249/8452 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 55480 event pairs, 4143 based on Foata normal form. 253/8025 useless extension candidates. Maximal degree in co-relation 16046. Up to 7489 conditions per place. [2024-06-28 01:38:50,657 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 43 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:38:50,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 229 flow [2024-06-28 01:38:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:38:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:38:50,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-28 01:38:50,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6597222222222222 [2024-06-28 01:38:50,668 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 95 transitions. [2024-06-28 01:38:50,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 229 flow [2024-06-28 01:38:50,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 224 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:38:50,676 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 01:38:50,677 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 01:38:50,681 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:38:50,681 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 01:38:50,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:50,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:50,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:38:50,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:38:50,682 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 01:38:50,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:50,682 INFO L85 PathProgramCache]: Analyzing trace with hash 358220107, now seen corresponding path program 1 times [2024-06-28 01:38:50,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:50,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159354279] [2024-06-28 01:38:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:50,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:50,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:50,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159354279] [2024-06-28 01:38:50,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159354279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:50,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:50,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:38:50,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054634597] [2024-06-28 01:38:50,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:50,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:38:50,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:38:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:38:50,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2024-06-28 01:38:50,752 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 01:38:50,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:50,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2024-06-28 01:38:50,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:50,986 INFO L124 PetriNetUnfolderBase]: 950/1823 cut-off events. [2024-06-28 01:38:50,987 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:38:50,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3525 conditions, 1823 events. 950/1823 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12157 event pairs, 463 based on Foata normal form. 0/1697 useless extension candidates. Maximal degree in co-relation 3513. Up to 1207 conditions per place. [2024-06-28 01:38:50,995 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 35 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-06-28 01:38:50,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 234 flow [2024-06-28 01:38:50,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:38:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:38:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-28 01:38:50,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-06-28 01:38:50,999 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 3 states and 113 transitions. [2024-06-28 01:38:50,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 234 flow [2024-06-28 01:38:51,000 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 01:38:51,002 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 124 flow [2024-06-28 01:38:51,002 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 01:38:51,003 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:38:51,003 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 124 flow [2024-06-28 01:38:51,003 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 01:38:51,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:51,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:51,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:38:51,006 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 01:38:51,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:51,012 INFO L85 PathProgramCache]: Analyzing trace with hash 652000455, now seen corresponding path program 1 times [2024-06-28 01:38:51,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:51,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564201599] [2024-06-28 01:38:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:51,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:51,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:51,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564201599] [2024-06-28 01:38:51,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564201599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:51,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:51,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:38:51,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521410395] [2024-06-28 01:38:51,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:51,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:38:51,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:51,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:38:51,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:38:51,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:51,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:51,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:51,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:51,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:52,214 INFO L124 PetriNetUnfolderBase]: 4457/7079 cut-off events. [2024-06-28 01:38:52,214 INFO L125 PetriNetUnfolderBase]: For 1560/1560 co-relation queries the response was YES. [2024-06-28 01:38:52,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15054 conditions, 7079 events. 4457/7079 cut-off events. For 1560/1560 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 43963 event pairs, 2907 based on Foata normal form. 3/6809 useless extension candidates. Maximal degree in co-relation 15041. Up to 6358 conditions per place. [2024-06-28 01:38:52,253 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 51 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2024-06-28 01:38:52,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 318 flow [2024-06-28 01:38:52,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:38:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:38:52,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-28 01:38:52,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609375 [2024-06-28 01:38:52,258 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 124 flow. Second operand 4 states and 117 transitions. [2024-06-28 01:38:52,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 318 flow [2024-06-28 01:38:52,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:38:52,261 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 185 flow [2024-06-28 01:38:52,261 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 01:38:52,262 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 01:38:52,263 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 185 flow [2024-06-28 01:38:52,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:52,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:52,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:52,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:38:52,264 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 01:38:52,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:52,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1262820792, now seen corresponding path program 1 times [2024-06-28 01:38:52,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:52,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296985630] [2024-06-28 01:38:52,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:52,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:52,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296985630] [2024-06-28 01:38:52,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296985630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:52,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:52,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:38:52,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393144280] [2024-06-28 01:38:52,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:52,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:38:52,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:52,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:38:52,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:38:52,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:52,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:52,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:52,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:52,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:53,632 INFO L124 PetriNetUnfolderBase]: 3850/6265 cut-off events. [2024-06-28 01:38:53,633 INFO L125 PetriNetUnfolderBase]: For 2609/2609 co-relation queries the response was YES. [2024-06-28 01:38:53,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14338 conditions, 6265 events. 3850/6265 cut-off events. For 2609/2609 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39351 event pairs, 1910 based on Foata normal form. 5/6053 useless extension candidates. Maximal degree in co-relation 14323. Up to 5419 conditions per place. [2024-06-28 01:38:53,664 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 67 selfloop transitions, 18 changer transitions 0/96 dead transitions. [2024-06-28 01:38:53,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 96 transitions, 497 flow [2024-06-28 01:38:53,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:38:53,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:38:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-28 01:38:53,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 01:38:53,666 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 185 flow. Second operand 5 states and 150 transitions. [2024-06-28 01:38:53,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 96 transitions, 497 flow [2024-06-28 01:38:53,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 96 transitions, 486 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:38:53,670 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 299 flow [2024-06-28 01:38:53,670 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=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2024-06-28 01:38:53,670 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2024-06-28 01:38:53,671 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 299 flow [2024-06-28 01:38:53,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:53,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:53,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:53,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:38:53,671 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 01:38:53,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:53,672 INFO L85 PathProgramCache]: Analyzing trace with hash -492737274, now seen corresponding path program 1 times [2024-06-28 01:38:53,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:53,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555354852] [2024-06-28 01:38:53,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:53,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:54,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:54,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555354852] [2024-06-28 01:38:54,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555354852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:54,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:54,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:38:54,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771938116] [2024-06-28 01:38:54,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:54,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:38:54,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:54,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:38:54,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:38:54,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:54,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 64 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:54,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:54,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:54,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:55,271 INFO L124 PetriNetUnfolderBase]: 3872/6293 cut-off events. [2024-06-28 01:38:55,271 INFO L125 PetriNetUnfolderBase]: For 6420/6423 co-relation queries the response was YES. [2024-06-28 01:38:55,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16690 conditions, 6293 events. 3872/6293 cut-off events. For 6420/6423 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39439 event pairs, 1600 based on Foata normal form. 7/6084 useless extension candidates. Maximal degree in co-relation 16671. Up to 5412 conditions per place. [2024-06-28 01:38:55,304 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 77 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2024-06-28 01:38:55,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 110 transitions, 655 flow [2024-06-28 01:38:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:38:55,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:38:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-28 01:38:55,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6180555555555556 [2024-06-28 01:38:55,306 INFO L175 Difference]: Start difference. First operand has 62 places, 64 transitions, 299 flow. Second operand 6 states and 178 transitions. [2024-06-28 01:38:55,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 110 transitions, 655 flow [2024-06-28 01:38:55,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 110 transitions, 647 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 01:38:55,311 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 376 flow [2024-06-28 01:38:55,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-28 01:38:55,312 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 01:38:55,312 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 376 flow [2024-06-28 01:38:55,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:55,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:55,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:55,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:38:55,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:55,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1905015335, now seen corresponding path program 1 times [2024-06-28 01:38:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834473578] [2024-06-28 01:38:55,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:55,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:56,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:56,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834473578] [2024-06-28 01:38:56,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834473578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:56,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:56,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:38:56,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145271472] [2024-06-28 01:38:56,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:56,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:38:56,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:56,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:38:56,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:38:56,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:38:56,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 376 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:56,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:56,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:38:56,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:57,106 INFO L124 PetriNetUnfolderBase]: 3907/6337 cut-off events. [2024-06-28 01:38:57,106 INFO L125 PetriNetUnfolderBase]: For 9687/9690 co-relation queries the response was YES. [2024-06-28 01:38:57,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18314 conditions, 6337 events. 3907/6337 cut-off events. For 9687/9690 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39689 event pairs, 1251 based on Foata normal form. 12/6136 useless extension candidates. Maximal degree in co-relation 18292. Up to 5389 conditions per place. [2024-06-28 01:38:57,141 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 84 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-06-28 01:38:57,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 120 transitions, 776 flow [2024-06-28 01:38:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:38:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:38:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-28 01:38:57,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2024-06-28 01:38:57,143 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 376 flow. Second operand 7 states and 202 transitions. [2024-06-28 01:38:57,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 120 transitions, 776 flow [2024-06-28 01:38:57,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 120 transitions, 723 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:57,165 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 403 flow [2024-06-28 01:38:57,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=403, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-28 01:38:57,167 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-28 01:38:57,167 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 403 flow [2024-06-28 01:38:57,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:57,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:57,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:57,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:38:57,168 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 01:38:57,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:57,169 INFO L85 PathProgramCache]: Analyzing trace with hash 864329945, now seen corresponding path program 1 times [2024-06-28 01:38:57,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:57,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077782059] [2024-06-28 01:38:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:57,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:57,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:57,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077782059] [2024-06-28 01:38:57,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077782059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:57,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:57,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:38:57,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253137273] [2024-06-28 01:38:57,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:57,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:38:57,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:57,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:38:57,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:38:57,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:57,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 403 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:57,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:57,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:57,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:58,514 INFO L124 PetriNetUnfolderBase]: 4549/7413 cut-off events. [2024-06-28 01:38:58,514 INFO L125 PetriNetUnfolderBase]: For 14749/14749 co-relation queries the response was YES. [2024-06-28 01:38:58,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22067 conditions, 7413 events. 4549/7413 cut-off events. For 14749/14749 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 47230 event pairs, 1945 based on Foata normal form. 2/7192 useless extension candidates. Maximal degree in co-relation 22043. Up to 6491 conditions per place. [2024-06-28 01:38:58,553 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 67 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-28 01:38:58,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 631 flow [2024-06-28 01:38:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:38:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:38:58,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 01:38:58,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-28 01:38:58,555 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 403 flow. Second operand 5 states and 119 transitions. [2024-06-28 01:38:58,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 631 flow [2024-06-28 01:38:58,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 563 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:58,562 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 407 flow [2024-06-28 01:38:58,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2024-06-28 01:38:58,562 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-28 01:38:58,562 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 407 flow [2024-06-28 01:38:58,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:58,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:58,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:58,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:38:58,563 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 01:38:58,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:58,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1015171348, now seen corresponding path program 1 times [2024-06-28 01:38:58,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:58,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479728937] [2024-06-28 01:38:58,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:58,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:59,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:59,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479728937] [2024-06-28 01:38:59,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479728937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:59,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:59,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:38:59,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122889840] [2024-06-28 01:38:59,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:59,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:38:59,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:59,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:38:59,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:38:59,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:59,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 407 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:59,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:59,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:59,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:00,032 INFO L124 PetriNetUnfolderBase]: 4577/7482 cut-off events. [2024-06-28 01:39:00,032 INFO L125 PetriNetUnfolderBase]: For 18456/18456 co-relation queries the response was YES. [2024-06-28 01:39:00,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22822 conditions, 7482 events. 4577/7482 cut-off events. For 18456/18456 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 47752 event pairs, 1838 based on Foata normal form. 6/7297 useless extension candidates. Maximal degree in co-relation 22796. Up to 6409 conditions per place. [2024-06-28 01:39:00,071 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 85 selfloop transitions, 21 changer transitions 0/115 dead transitions. [2024-06-28 01:39:00,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 115 transitions, 795 flow [2024-06-28 01:39:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 01:39:00,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:39:00,073 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 407 flow. Second operand 6 states and 150 transitions. [2024-06-28 01:39:00,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 115 transitions, 795 flow [2024-06-28 01:39:00,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 115 transitions, 757 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:00,083 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 524 flow [2024-06-28 01:39:00,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=524, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2024-06-28 01:39:00,085 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 01:39:00,085 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 524 flow [2024-06-28 01:39:00,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:00,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:00,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:00,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:39:00,086 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 01:39:00,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:00,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1398896629, now seen corresponding path program 1 times [2024-06-28 01:39:00,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:00,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969914809] [2024-06-28 01:39:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:00,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:00,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969914809] [2024-06-28 01:39:00,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969914809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:00,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:00,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:00,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654296249] [2024-06-28 01:39:00,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:00,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:00,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:00,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:00,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:00,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 524 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:00,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:00,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:00,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:01,463 INFO L124 PetriNetUnfolderBase]: 4595/7390 cut-off events. [2024-06-28 01:39:01,463 INFO L125 PetriNetUnfolderBase]: For 25293/25302 co-relation queries the response was YES. [2024-06-28 01:39:01,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24884 conditions, 7390 events. 4595/7390 cut-off events. For 25293/25302 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 45875 event pairs, 1686 based on Foata normal form. 10/7210 useless extension candidates. Maximal degree in co-relation 24855. Up to 6437 conditions per place. [2024-06-28 01:39:01,503 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 87 selfloop transitions, 21 changer transitions 0/117 dead transitions. [2024-06-28 01:39:01,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 117 transitions, 868 flow [2024-06-28 01:39:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:01,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 01:39:01,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:39:01,504 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 524 flow. Second operand 6 states and 150 transitions. [2024-06-28 01:39:01,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 117 transitions, 868 flow [2024-06-28 01:39:01,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 850 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-28 01:39:01,518 INFO L231 Difference]: Finished difference. Result has 80 places, 87 transitions, 582 flow [2024-06-28 01:39:01,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=582, PETRI_PLACES=80, PETRI_TRANSITIONS=87} [2024-06-28 01:39:01,519 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-06-28 01:39:01,519 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 87 transitions, 582 flow [2024-06-28 01:39:01,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:01,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:01,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:01,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:39:01,519 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 01:39:01,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:01,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1692420439, now seen corresponding path program 2 times [2024-06-28 01:39:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:01,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619000933] [2024-06-28 01:39:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:01,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:02,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:02,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619000933] [2024-06-28 01:39:02,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619000933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:02,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:02,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:02,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924205028] [2024-06-28 01:39:02,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:02,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:02,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:02,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:02,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:02,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:02,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 582 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:02,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:02,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:02,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:03,000 INFO L124 PetriNetUnfolderBase]: 4580/7490 cut-off events. [2024-06-28 01:39:03,000 INFO L125 PetriNetUnfolderBase]: For 27202/27202 co-relation queries the response was YES. [2024-06-28 01:39:03,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25259 conditions, 7490 events. 4580/7490 cut-off events. For 27202/27202 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 47771 event pairs, 1901 based on Foata normal form. 2/7301 useless extension candidates. Maximal degree in co-relation 25227. Up to 6520 conditions per place. [2024-06-28 01:39:03,046 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 88 selfloop transitions, 13 changer transitions 0/110 dead transitions. [2024-06-28 01:39:03,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 110 transitions, 842 flow [2024-06-28 01:39:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:03,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:39:03,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:39:03,048 INFO L175 Difference]: Start difference. First operand has 80 places, 87 transitions, 582 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:39:03,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 110 transitions, 842 flow [2024-06-28 01:39:03,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 110 transitions, 809 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:03,070 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 583 flow [2024-06-28 01:39:03,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=583, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2024-06-28 01:39:03,071 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-28 01:39:03,071 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 583 flow [2024-06-28 01:39:03,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:03,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:03,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:03,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:39:03,072 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 01:39:03,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1690138264, now seen corresponding path program 1 times [2024-06-28 01:39:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893470982] [2024-06-28 01:39:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:03,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:03,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:03,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893470982] [2024-06-28 01:39:03,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893470982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:03,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:03,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:03,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179802240] [2024-06-28 01:39:03,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:03,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:03,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:03,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:03,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:03,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:03,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 583 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:03,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:03,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:03,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:04,829 INFO L124 PetriNetUnfolderBase]: 5004/7995 cut-off events. [2024-06-28 01:39:04,829 INFO L125 PetriNetUnfolderBase]: For 31442/31451 co-relation queries the response was YES. [2024-06-28 01:39:04,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27523 conditions, 7995 events. 5004/7995 cut-off events. For 31442/31451 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 49805 event pairs, 1486 based on Foata normal form. 14/7810 useless extension candidates. Maximal degree in co-relation 27490. Up to 6394 conditions per place. [2024-06-28 01:39:04,962 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 115 selfloop transitions, 34 changer transitions 0/158 dead transitions. [2024-06-28 01:39:04,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 158 transitions, 1275 flow [2024-06-28 01:39:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:04,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:04,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 01:39:04,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-28 01:39:04,965 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 583 flow. Second operand 7 states and 186 transitions. [2024-06-28 01:39:04,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 158 transitions, 1275 flow [2024-06-28 01:39:04,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 158 transitions, 1219 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:04,985 INFO L231 Difference]: Finished difference. Result has 87 places, 109 transitions, 820 flow [2024-06-28 01:39:04,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=527, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=820, PETRI_PLACES=87, PETRI_TRANSITIONS=109} [2024-06-28 01:39:04,985 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 33 predicate places. [2024-06-28 01:39:04,985 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 820 flow [2024-06-28 01:39:04,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:04,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:04,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:04,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:39:04,986 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 01:39:04,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash 925693296, now seen corresponding path program 2 times [2024-06-28 01:39:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:04,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243591384] [2024-06-28 01:39:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:04,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:05,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:05,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243591384] [2024-06-28 01:39:05,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243591384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:05,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:05,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:05,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798911210] [2024-06-28 01:39:05,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:05,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:05,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:05,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:05,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:05,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:05,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 820 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:05,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:05,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:05,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:06,632 INFO L124 PetriNetUnfolderBase]: 5088/8264 cut-off events. [2024-06-28 01:39:06,632 INFO L125 PetriNetUnfolderBase]: For 44447/44447 co-relation queries the response was YES. [2024-06-28 01:39:06,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32410 conditions, 8264 events. 5088/8264 cut-off events. For 44447/44447 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 53033 event pairs, 1818 based on Foata normal form. 6/8061 useless extension candidates. Maximal degree in co-relation 32374. Up to 7129 conditions per place. [2024-06-28 01:39:06,692 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 116 selfloop transitions, 26 changer transitions 0/151 dead transitions. [2024-06-28 01:39:06,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 151 transitions, 1327 flow [2024-06-28 01:39:06,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:39:06,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-28 01:39:06,694 INFO L175 Difference]: Start difference. First operand has 87 places, 109 transitions, 820 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:39:06,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 151 transitions, 1327 flow [2024-06-28 01:39:06,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 151 transitions, 1285 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-28 01:39:06,737 INFO L231 Difference]: Finished difference. Result has 96 places, 119 transitions, 980 flow [2024-06-28 01:39:06,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=980, PETRI_PLACES=96, PETRI_TRANSITIONS=119} [2024-06-28 01:39:06,738 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-28 01:39:06,738 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 119 transitions, 980 flow [2024-06-28 01:39:06,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:06,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:06,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:06,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:39:06,739 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 01:39:06,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash 621854678, now seen corresponding path program 3 times [2024-06-28 01:39:06,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:06,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300122179] [2024-06-28 01:39:06,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:06,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:07,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:07,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300122179] [2024-06-28 01:39:07,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300122179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:07,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:07,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:07,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234353294] [2024-06-28 01:39:07,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:07,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:07,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:07,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:07,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:07,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 119 transitions, 980 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:07,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:07,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:07,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:08,433 INFO L124 PetriNetUnfolderBase]: 5116/8294 cut-off events. [2024-06-28 01:39:08,434 INFO L125 PetriNetUnfolderBase]: For 49197/49197 co-relation queries the response was YES. [2024-06-28 01:39:08,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33305 conditions, 8294 events. 5116/8294 cut-off events. For 49197/49197 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53150 event pairs, 1820 based on Foata normal form. 6/8093 useless extension candidates. Maximal degree in co-relation 33263. Up to 7029 conditions per place. [2024-06-28 01:39:08,487 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 122 selfloop transitions, 32 changer transitions 0/163 dead transitions. [2024-06-28 01:39:08,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 163 transitions, 1538 flow [2024-06-28 01:39:08,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:08,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:39:08,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-28 01:39:08,489 INFO L175 Difference]: Start difference. First operand has 96 places, 119 transitions, 980 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:39:08,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 163 transitions, 1538 flow [2024-06-28 01:39:08,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 163 transitions, 1469 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:08,536 INFO L231 Difference]: Finished difference. Result has 101 places, 127 transitions, 1094 flow [2024-06-28 01:39:08,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1094, PETRI_PLACES=101, PETRI_TRANSITIONS=127} [2024-06-28 01:39:08,538 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-28 01:39:08,538 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 127 transitions, 1094 flow [2024-06-28 01:39:08,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:08,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:08,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:08,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:39:08,539 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 01:39:08,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:08,539 INFO L85 PathProgramCache]: Analyzing trace with hash 622130547, now seen corresponding path program 1 times [2024-06-28 01:39:08,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:08,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008548933] [2024-06-28 01:39:08,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:08,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:09,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:09,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008548933] [2024-06-28 01:39:09,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008548933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:09,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:09,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:09,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903775875] [2024-06-28 01:39:09,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:09,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:09,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:09,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:09,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:09,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 127 transitions, 1094 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:09,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:09,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:09,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:10,534 INFO L124 PetriNetUnfolderBase]: 5139/8359 cut-off events. [2024-06-28 01:39:10,534 INFO L125 PetriNetUnfolderBase]: For 57488/57488 co-relation queries the response was YES. [2024-06-28 01:39:10,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34621 conditions, 8359 events. 5139/8359 cut-off events. For 57488/57488 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 53883 event pairs, 1757 based on Foata normal form. 6/8147 useless extension candidates. Maximal degree in co-relation 34577. Up to 7120 conditions per place. [2024-06-28 01:39:10,592 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 127 selfloop transitions, 33 changer transitions 0/169 dead transitions. [2024-06-28 01:39:10,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 169 transitions, 1610 flow [2024-06-28 01:39:10,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:10,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:10,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:39:10,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-28 01:39:10,593 INFO L175 Difference]: Start difference. First operand has 101 places, 127 transitions, 1094 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:39:10,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 169 transitions, 1610 flow [2024-06-28 01:39:10,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 169 transitions, 1550 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:10,646 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1152 flow [2024-06-28 01:39:10,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1034, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1152, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2024-06-28 01:39:10,647 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-28 01:39:10,647 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1152 flow [2024-06-28 01:39:10,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:10,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:10,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:10,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:39:10,648 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:10,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:10,648 INFO L85 PathProgramCache]: Analyzing trace with hash -134111373, now seen corresponding path program 1 times [2024-06-28 01:39:10,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:10,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583620064] [2024-06-28 01:39:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:10,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:11,091 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 01:39:11,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:11,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583620064] [2024-06-28 01:39:11,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583620064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:11,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:11,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:39:11,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070495006] [2024-06-28 01:39:11,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:11,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:39:11,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:11,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:39:11,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:39:11,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:11,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1152 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:11,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:11,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:11,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:12,087 INFO L124 PetriNetUnfolderBase]: 5136/8343 cut-off events. [2024-06-28 01:39:12,087 INFO L125 PetriNetUnfolderBase]: For 61381/61381 co-relation queries the response was YES. [2024-06-28 01:39:12,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35391 conditions, 8343 events. 5136/8343 cut-off events. For 61381/61381 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 53636 event pairs, 1825 based on Foata normal form. 1/8131 useless extension candidates. Maximal degree in co-relation 35345. Up to 7300 conditions per place. [2024-06-28 01:39:12,138 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 121 selfloop transitions, 14 changer transitions 0/144 dead transitions. [2024-06-28 01:39:12,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 144 transitions, 1454 flow [2024-06-28 01:39:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:39:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:39:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 01:39:12,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:39:12,139 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1152 flow. Second operand 5 states and 115 transitions. [2024-06-28 01:39:12,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 144 transitions, 1454 flow [2024-06-28 01:39:12,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 144 transitions, 1342 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:12,184 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1078 flow [2024-06-28 01:39:12,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1078, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2024-06-28 01:39:12,185 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-06-28 01:39:12,185 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1078 flow [2024-06-28 01:39:12,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:12,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:12,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:12,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:39:12,185 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:12,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:12,186 INFO L85 PathProgramCache]: Analyzing trace with hash -858492574, now seen corresponding path program 1 times [2024-06-28 01:39:12,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:12,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183052259] [2024-06-28 01:39:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:12,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:13,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:13,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183052259] [2024-06-28 01:39:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183052259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:13,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:13,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:13,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355597677] [2024-06-28 01:39:13,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:13,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:13,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:13,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:13,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:13,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1078 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:13,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:13,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:13,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:14,207 INFO L124 PetriNetUnfolderBase]: 5136/8229 cut-off events. [2024-06-28 01:39:14,207 INFO L125 PetriNetUnfolderBase]: For 62744/62756 co-relation queries the response was YES. [2024-06-28 01:39:14,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35068 conditions, 8229 events. 5136/8229 cut-off events. For 62744/62756 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 51721 event pairs, 1546 based on Foata normal form. 10/8021 useless extension candidates. Maximal degree in co-relation 35021. Up to 7115 conditions per place. [2024-06-28 01:39:14,255 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 143 selfloop transitions, 28 changer transitions 0/180 dead transitions. [2024-06-28 01:39:14,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 180 transitions, 1598 flow [2024-06-28 01:39:14,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:39:14,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-28 01:39:14,257 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1078 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:39:14,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 180 transitions, 1598 flow [2024-06-28 01:39:14,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 180 transitions, 1559 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:14,296 INFO L231 Difference]: Finished difference. Result has 109 places, 133 transitions, 1154 flow [2024-06-28 01:39:14,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1154, PETRI_PLACES=109, PETRI_TRANSITIONS=133} [2024-06-28 01:39:14,296 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-28 01:39:14,296 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 133 transitions, 1154 flow [2024-06-28 01:39:14,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:14,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:14,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:14,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:39:14,297 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 01:39:14,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:14,297 INFO L85 PathProgramCache]: Analyzing trace with hash -854683139, now seen corresponding path program 1 times [2024-06-28 01:39:14,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:14,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859414554] [2024-06-28 01:39:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:14,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:14,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:14,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:14,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859414554] [2024-06-28 01:39:14,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859414554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:14,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:14,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:14,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159688965] [2024-06-28 01:39:14,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:14,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:14,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:14,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:14,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:15,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:15,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 133 transitions, 1154 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:15,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:15,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:15,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:15,992 INFO L124 PetriNetUnfolderBase]: 5220/8347 cut-off events. [2024-06-28 01:39:15,992 INFO L125 PetriNetUnfolderBase]: For 71740/71752 co-relation queries the response was YES. [2024-06-28 01:39:16,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36916 conditions, 8347 events. 5220/8347 cut-off events. For 71740/71752 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 52527 event pairs, 1495 based on Foata normal form. 9/8143 useless extension candidates. Maximal degree in co-relation 36869. Up to 6537 conditions per place. [2024-06-28 01:39:16,054 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 127 selfloop transitions, 52 changer transitions 0/188 dead transitions. [2024-06-28 01:39:16,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 188 transitions, 1894 flow [2024-06-28 01:39:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:16,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:16,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 01:39:16,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-06-28 01:39:16,055 INFO L175 Difference]: Start difference. First operand has 109 places, 133 transitions, 1154 flow. Second operand 7 states and 188 transitions. [2024-06-28 01:39:16,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 188 transitions, 1894 flow [2024-06-28 01:39:16,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 188 transitions, 1805 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:16,125 INFO L231 Difference]: Finished difference. Result has 112 places, 141 transitions, 1343 flow [2024-06-28 01:39:16,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1343, PETRI_PLACES=112, PETRI_TRANSITIONS=141} [2024-06-28 01:39:16,125 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-28 01:39:16,125 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 141 transitions, 1343 flow [2024-06-28 01:39:16,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:16,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:16,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:16,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:39:16,125 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 01:39:16,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:16,126 INFO L85 PathProgramCache]: Analyzing trace with hash -854677559, now seen corresponding path program 2 times [2024-06-28 01:39:16,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:16,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15441458] [2024-06-28 01:39:16,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:16,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:16,888 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 01:39:16,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:16,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15441458] [2024-06-28 01:39:16,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15441458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:16,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:16,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:16,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466762822] [2024-06-28 01:39:16,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:16,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:16,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:16,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:16,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:16,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:16,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 141 transitions, 1343 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:16,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:16,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:16,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:17,969 INFO L124 PetriNetUnfolderBase]: 5304/8455 cut-off events. [2024-06-28 01:39:17,969 INFO L125 PetriNetUnfolderBase]: For 85298/85310 co-relation queries the response was YES. [2024-06-28 01:39:17,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39728 conditions, 8455 events. 5304/8455 cut-off events. For 85298/85310 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 53098 event pairs, 1484 based on Foata normal form. 9/8253 useless extension candidates. Maximal degree in co-relation 39678. Up to 6599 conditions per place. [2024-06-28 01:39:18,029 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 126 selfloop transitions, 53 changer transitions 0/188 dead transitions. [2024-06-28 01:39:18,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 188 transitions, 2005 flow [2024-06-28 01:39:18,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:18,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:18,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:39:18,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-28 01:39:18,030 INFO L175 Difference]: Start difference. First operand has 112 places, 141 transitions, 1343 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:39:18,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 188 transitions, 2005 flow [2024-06-28 01:39:18,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 188 transitions, 1902 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:18,104 INFO L231 Difference]: Finished difference. Result has 116 places, 145 transitions, 1420 flow [2024-06-28 01:39:18,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1420, PETRI_PLACES=116, PETRI_TRANSITIONS=145} [2024-06-28 01:39:18,104 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2024-06-28 01:39:18,104 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 145 transitions, 1420 flow [2024-06-28 01:39:18,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:18,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:18,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:18,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:39:18,105 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 01:39:18,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:18,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1367981866, now seen corresponding path program 1 times [2024-06-28 01:39:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:18,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845876637] [2024-06-28 01:39:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:18,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845876637] [2024-06-28 01:39:18,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845876637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:18,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:18,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:18,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985754534] [2024-06-28 01:39:18,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:18,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:18,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:18,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:18,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:19,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:19,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 145 transitions, 1420 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:19,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:19,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:19,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:20,146 INFO L124 PetriNetUnfolderBase]: 5333/8413 cut-off events. [2024-06-28 01:39:20,147 INFO L125 PetriNetUnfolderBase]: For 90672/90672 co-relation queries the response was YES. [2024-06-28 01:39:20,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39987 conditions, 8413 events. 5333/8413 cut-off events. For 90672/90672 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 52657 event pairs, 1771 based on Foata normal form. 3/8260 useless extension candidates. Maximal degree in co-relation 39936. Up to 7355 conditions per place. [2024-06-28 01:39:20,213 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 140 selfloop transitions, 38 changer transitions 0/187 dead transitions. [2024-06-28 01:39:20,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 187 transitions, 1978 flow [2024-06-28 01:39:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:39:20,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-28 01:39:20,214 INFO L175 Difference]: Start difference. First operand has 116 places, 145 transitions, 1420 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:39:20,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 187 transitions, 1978 flow [2024-06-28 01:39:20,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 187 transitions, 1874 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:20,286 INFO L231 Difference]: Finished difference. Result has 119 places, 149 transitions, 1472 flow [2024-06-28 01:39:20,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1472, PETRI_PLACES=119, PETRI_TRANSITIONS=149} [2024-06-28 01:39:20,287 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-28 01:39:20,287 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 149 transitions, 1472 flow [2024-06-28 01:39:20,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:20,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:20,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:20,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:39:20,288 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 01:39:20,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:20,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2069004235, now seen corresponding path program 3 times [2024-06-28 01:39:20,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:20,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636360647] [2024-06-28 01:39:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:20,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:20,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:20,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636360647] [2024-06-28 01:39:20,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636360647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:20,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:20,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:20,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806966727] [2024-06-28 01:39:20,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:20,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:20,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:20,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:20,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:21,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:21,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 149 transitions, 1472 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:21,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:21,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:21,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:22,072 INFO L124 PetriNetUnfolderBase]: 5361/8425 cut-off events. [2024-06-28 01:39:22,073 INFO L125 PetriNetUnfolderBase]: For 97326/97338 co-relation queries the response was YES. [2024-06-28 01:39:22,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40853 conditions, 8425 events. 5361/8425 cut-off events. For 97326/97338 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 52444 event pairs, 1817 based on Foata normal form. 14/8292 useless extension candidates. Maximal degree in co-relation 40801. Up to 7434 conditions per place. [2024-06-28 01:39:22,316 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 150 selfloop transitions, 28 changer transitions 0/187 dead transitions. [2024-06-28 01:39:22,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 187 transitions, 2020 flow [2024-06-28 01:39:22,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:22,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:39:22,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-28 01:39:22,317 INFO L175 Difference]: Start difference. First operand has 119 places, 149 transitions, 1472 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:39:22,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 187 transitions, 2020 flow [2024-06-28 01:39:22,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 187 transitions, 1916 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:22,396 INFO L231 Difference]: Finished difference. Result has 121 places, 153 transitions, 1503 flow [2024-06-28 01:39:22,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1503, PETRI_PLACES=121, PETRI_TRANSITIONS=153} [2024-06-28 01:39:22,396 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-28 01:39:22,396 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 153 transitions, 1503 flow [2024-06-28 01:39:22,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:22,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:22,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:22,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:39:22,397 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:22,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:22,398 INFO L85 PathProgramCache]: Analyzing trace with hash 137516778, now seen corresponding path program 1 times [2024-06-28 01:39:22,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:22,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038299397] [2024-06-28 01:39:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:22,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:22,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:22,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038299397] [2024-06-28 01:39:22,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038299397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:22,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:22,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:22,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971751534] [2024-06-28 01:39:22,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:22,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:22,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:22,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:22,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:22,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:39:22,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 153 transitions, 1503 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 01:39:22,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:22,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:39:22,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:24,063 INFO L124 PetriNetUnfolderBase]: 5994/9168 cut-off events. [2024-06-28 01:39:24,063 INFO L125 PetriNetUnfolderBase]: For 114716/114716 co-relation queries the response was YES. [2024-06-28 01:39:24,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45077 conditions, 9168 events. 5994/9168 cut-off events. For 114716/114716 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 55444 event pairs, 2081 based on Foata normal form. 1/9004 useless extension candidates. Maximal degree in co-relation 45024. Up to 8483 conditions per place. [2024-06-28 01:39:24,130 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 150 selfloop transitions, 17 changer transitions 0/175 dead transitions. [2024-06-28 01:39:24,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 175 transitions, 1915 flow [2024-06-28 01:39:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-28 01:39:24,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-06-28 01:39:24,132 INFO L175 Difference]: Start difference. First operand has 121 places, 153 transitions, 1503 flow. Second operand 6 states and 130 transitions. [2024-06-28 01:39:24,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 175 transitions, 1915 flow [2024-06-28 01:39:24,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 175 transitions, 1828 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:24,220 INFO L231 Difference]: Finished difference. Result has 122 places, 156 transitions, 1493 flow [2024-06-28 01:39:24,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1493, PETRI_PLACES=122, PETRI_TRANSITIONS=156} [2024-06-28 01:39:24,220 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-28 01:39:24,220 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 156 transitions, 1493 flow [2024-06-28 01:39:24,221 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 01:39:24,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:24,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:24,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:39:24,221 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 01:39:24,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:24,221 INFO L85 PathProgramCache]: Analyzing trace with hash -843525333, now seen corresponding path program 1 times [2024-06-28 01:39:24,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:24,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749244151] [2024-06-28 01:39:24,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:24,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:25,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749244151] [2024-06-28 01:39:25,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749244151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:25,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:25,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:25,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702186697] [2024-06-28 01:39:25,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:25,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:25,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:25,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:25,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:25,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:25,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 156 transitions, 1493 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:25,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:25,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:25,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:26,288 INFO L124 PetriNetUnfolderBase]: 5538/8320 cut-off events. [2024-06-28 01:39:26,289 INFO L125 PetriNetUnfolderBase]: For 119706/119718 co-relation queries the response was YES. [2024-06-28 01:39:26,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43553 conditions, 8320 events. 5538/8320 cut-off events. For 119706/119718 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 48337 event pairs, 1007 based on Foata normal form. 12/8259 useless extension candidates. Maximal degree in co-relation 43499. Up to 7425 conditions per place. [2024-06-28 01:39:26,355 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 171 selfloop transitions, 41 changer transitions 0/222 dead transitions. [2024-06-28 01:39:26,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 222 transitions, 2435 flow [2024-06-28 01:39:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:39:26,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 01:39:26,356 INFO L175 Difference]: Start difference. First operand has 122 places, 156 transitions, 1493 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:39:26,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 222 transitions, 2435 flow [2024-06-28 01:39:26,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 222 transitions, 2384 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:26,455 INFO L231 Difference]: Finished difference. Result has 129 places, 167 transitions, 1825 flow [2024-06-28 01:39:26,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1825, PETRI_PLACES=129, PETRI_TRANSITIONS=167} [2024-06-28 01:39:26,456 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-28 01:39:26,456 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 167 transitions, 1825 flow [2024-06-28 01:39:26,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:26,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:26,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:26,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:39:26,457 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 01:39:26,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:26,457 INFO L85 PathProgramCache]: Analyzing trace with hash -722088193, now seen corresponding path program 1 times [2024-06-28 01:39:26,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:26,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470724291] [2024-06-28 01:39:26,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:26,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:27,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:27,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470724291] [2024-06-28 01:39:27,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470724291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:27,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:27,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:27,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523110798] [2024-06-28 01:39:27,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:27,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:27,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:27,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:27,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:27,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:27,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 167 transitions, 1825 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:27,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:27,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:27,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:28,780 INFO L124 PetriNetUnfolderBase]: 5796/8912 cut-off events. [2024-06-28 01:39:28,780 INFO L125 PetriNetUnfolderBase]: For 139807/139821 co-relation queries the response was YES. [2024-06-28 01:39:28,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47967 conditions, 8912 events. 5796/8912 cut-off events. For 139807/139821 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 54265 event pairs, 1377 based on Foata normal form. 9/8756 useless extension candidates. Maximal degree in co-relation 47909. Up to 6769 conditions per place. [2024-06-28 01:39:28,859 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 176 selfloop transitions, 70 changer transitions 0/256 dead transitions. [2024-06-28 01:39:28,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 256 transitions, 2997 flow [2024-06-28 01:39:28,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:28,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 269 transitions. [2024-06-28 01:39:28,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5604166666666667 [2024-06-28 01:39:28,861 INFO L175 Difference]: Start difference. First operand has 129 places, 167 transitions, 1825 flow. Second operand 10 states and 269 transitions. [2024-06-28 01:39:28,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 256 transitions, 2997 flow [2024-06-28 01:39:29,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 256 transitions, 2862 flow, removed 61 selfloop flow, removed 2 redundant places. [2024-06-28 01:39:29,046 INFO L231 Difference]: Finished difference. Result has 139 places, 179 transitions, 2031 flow [2024-06-28 01:39:29,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2031, PETRI_PLACES=139, PETRI_TRANSITIONS=179} [2024-06-28 01:39:29,046 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2024-06-28 01:39:29,046 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 179 transitions, 2031 flow [2024-06-28 01:39:29,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:29,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:29,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:29,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:39:29,047 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 01:39:29,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:29,047 INFO L85 PathProgramCache]: Analyzing trace with hash 344780283, now seen corresponding path program 2 times [2024-06-28 01:39:29,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:29,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050152975] [2024-06-28 01:39:29,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:29,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:30,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:30,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050152975] [2024-06-28 01:39:30,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050152975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:30,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:30,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:30,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524626201] [2024-06-28 01:39:30,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:30,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:30,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:30,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:30,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:30,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:30,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 179 transitions, 2031 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:30,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:30,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:30,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:31,428 INFO L124 PetriNetUnfolderBase]: 5771/8886 cut-off events. [2024-06-28 01:39:31,428 INFO L125 PetriNetUnfolderBase]: For 156324/156338 co-relation queries the response was YES. [2024-06-28 01:39:31,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50180 conditions, 8886 events. 5771/8886 cut-off events. For 156324/156338 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 54319 event pairs, 1543 based on Foata normal form. 12/8725 useless extension candidates. Maximal degree in co-relation 50118. Up to 7919 conditions per place. [2024-06-28 01:39:31,494 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 197 selfloop transitions, 30 changer transitions 0/237 dead transitions. [2024-06-28 01:39:31,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 237 transitions, 2693 flow [2024-06-28 01:39:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:31,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:39:31,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-28 01:39:31,497 INFO L175 Difference]: Start difference. First operand has 139 places, 179 transitions, 2031 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:39:31,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 237 transitions, 2693 flow [2024-06-28 01:39:31,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 237 transitions, 2459 flow, removed 82 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:31,661 INFO L231 Difference]: Finished difference. Result has 143 places, 181 transitions, 1916 flow [2024-06-28 01:39:31,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1916, PETRI_PLACES=143, PETRI_TRANSITIONS=181} [2024-06-28 01:39:31,662 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-28 01:39:31,662 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 181 transitions, 1916 flow [2024-06-28 01:39:31,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:31,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:31,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:31,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:39:31,663 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 01:39:31,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash -725377079, now seen corresponding path program 2 times [2024-06-28 01:39:31,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:31,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835499545] [2024-06-28 01:39:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:32,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835499545] [2024-06-28 01:39:32,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835499545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:32,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:32,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:32,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30456299] [2024-06-28 01:39:32,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:32,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:32,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:32,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:32,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:32,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:32,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 181 transitions, 1916 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:32,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:32,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:32,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:33,912 INFO L124 PetriNetUnfolderBase]: 5911/8830 cut-off events. [2024-06-28 01:39:33,912 INFO L125 PetriNetUnfolderBase]: For 160024/160036 co-relation queries the response was YES. [2024-06-28 01:39:33,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50744 conditions, 8830 events. 5911/8830 cut-off events. For 160024/160036 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 51588 event pairs, 1116 based on Foata normal form. 9/8776 useless extension candidates. Maximal degree in co-relation 50680. Up to 6698 conditions per place. [2024-06-28 01:39:33,968 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 174 selfloop transitions, 92 changer transitions 0/276 dead transitions. [2024-06-28 01:39:33,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 276 transitions, 3441 flow [2024-06-28 01:39:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-28 01:39:33,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-06-28 01:39:33,969 INFO L175 Difference]: Start difference. First operand has 143 places, 181 transitions, 1916 flow. Second operand 8 states and 222 transitions. [2024-06-28 01:39:33,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 276 transitions, 3441 flow [2024-06-28 01:39:34,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 276 transitions, 3380 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:34,121 INFO L231 Difference]: Finished difference. Result has 147 places, 204 transitions, 2476 flow [2024-06-28 01:39:34,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2476, PETRI_PLACES=147, PETRI_TRANSITIONS=204} [2024-06-28 01:39:34,122 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2024-06-28 01:39:34,122 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 204 transitions, 2476 flow [2024-06-28 01:39:34,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:34,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:34,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:34,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:39:34,122 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 01:39:34,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:34,123 INFO L85 PathProgramCache]: Analyzing trace with hash -725372429, now seen corresponding path program 3 times [2024-06-28 01:39:34,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:34,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370346044] [2024-06-28 01:39:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:34,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:34,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:34,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370346044] [2024-06-28 01:39:34,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370346044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:34,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:34,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:34,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709929874] [2024-06-28 01:39:34,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:34,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:34,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:34,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:35,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:35,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 204 transitions, 2476 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:35,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:35,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:35,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:36,386 INFO L124 PetriNetUnfolderBase]: 6017/9248 cut-off events. [2024-06-28 01:39:36,386 INFO L125 PetriNetUnfolderBase]: For 193095/193107 co-relation queries the response was YES. [2024-06-28 01:39:36,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56743 conditions, 9248 events. 6017/9248 cut-off events. For 193095/193107 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 56818 event pairs, 1397 based on Foata normal form. 9/9096 useless extension candidates. Maximal degree in co-relation 56675. Up to 7462 conditions per place. [2024-06-28 01:39:36,475 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 190 selfloop transitions, 62 changer transitions 0/262 dead transitions. [2024-06-28 01:39:36,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 262 transitions, 3356 flow [2024-06-28 01:39:36,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 01:39:36,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-28 01:39:36,476 INFO L175 Difference]: Start difference. First operand has 147 places, 204 transitions, 2476 flow. Second operand 8 states and 212 transitions. [2024-06-28 01:39:36,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 262 transitions, 3356 flow [2024-06-28 01:39:36,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 262 transitions, 3219 flow, removed 58 selfloop flow, removed 2 redundant places. [2024-06-28 01:39:36,761 INFO L231 Difference]: Finished difference. Result has 153 places, 208 transitions, 2556 flow [2024-06-28 01:39:36,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2556, PETRI_PLACES=153, PETRI_TRANSITIONS=208} [2024-06-28 01:39:36,761 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-28 01:39:36,762 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 208 transitions, 2556 flow [2024-06-28 01:39:36,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:36,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:36,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:36,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:39:36,762 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 01:39:36,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:36,763 INFO L85 PathProgramCache]: Analyzing trace with hash 463045717, now seen corresponding path program 4 times [2024-06-28 01:39:36,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:36,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928762652] [2024-06-28 01:39:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:36,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:37,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:37,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:37,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928762652] [2024-06-28 01:39:37,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928762652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:37,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:37,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:37,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922024497] [2024-06-28 01:39:37,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:37,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:37,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:37,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:37,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:37,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:37,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 208 transitions, 2556 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:37,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:37,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:37,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:39,083 INFO L124 PetriNetUnfolderBase]: 6100/9357 cut-off events. [2024-06-28 01:39:39,084 INFO L125 PetriNetUnfolderBase]: For 201329/201341 co-relation queries the response was YES. [2024-06-28 01:39:39,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57395 conditions, 9357 events. 6100/9357 cut-off events. For 201329/201341 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 57566 event pairs, 1392 based on Foata normal form. 9/9207 useless extension candidates. Maximal degree in co-relation 57325. Up to 7577 conditions per place. [2024-06-28 01:39:39,175 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 192 selfloop transitions, 60 changer transitions 0/262 dead transitions. [2024-06-28 01:39:39,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 262 transitions, 3390 flow [2024-06-28 01:39:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:39:39,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-28 01:39:39,176 INFO L175 Difference]: Start difference. First operand has 153 places, 208 transitions, 2556 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:39:39,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 262 transitions, 3390 flow [2024-06-28 01:39:39,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 262 transitions, 3221 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:39,468 INFO L231 Difference]: Finished difference. Result has 155 places, 212 transitions, 2608 flow [2024-06-28 01:39:39,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2608, PETRI_PLACES=155, PETRI_TRANSITIONS=212} [2024-06-28 01:39:39,468 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 101 predicate places. [2024-06-28 01:39:39,469 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 212 transitions, 2608 flow [2024-06-28 01:39:39,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:39,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:39,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:39,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:39:39,469 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:39,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash 463052661, now seen corresponding path program 1 times [2024-06-28 01:39:39,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:39,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037870639] [2024-06-28 01:39:39,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:39,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:40,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:40,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037870639] [2024-06-28 01:39:40,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037870639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:40,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:40,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:40,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053311322] [2024-06-28 01:39:40,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:40,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:40,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:40,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:40,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:40,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:40,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 212 transitions, 2608 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 01:39:40,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:40,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:40,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:41,904 INFO L124 PetriNetUnfolderBase]: 6248/9595 cut-off events. [2024-06-28 01:39:41,905 INFO L125 PetriNetUnfolderBase]: For 217608/217620 co-relation queries the response was YES. [2024-06-28 01:39:41,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59114 conditions, 9595 events. 6248/9595 cut-off events. For 217608/217620 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 59249 event pairs, 1424 based on Foata normal form. 15/9442 useless extension candidates. Maximal degree in co-relation 59043. Up to 7747 conditions per place. [2024-06-28 01:39:41,989 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 199 selfloop transitions, 58 changer transitions 0/267 dead transitions. [2024-06-28 01:39:41,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 267 transitions, 3502 flow [2024-06-28 01:39:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:41,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-06-28 01:39:41,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-28 01:39:41,991 INFO L175 Difference]: Start difference. First operand has 155 places, 212 transitions, 2608 flow. Second operand 8 states and 210 transitions. [2024-06-28 01:39:41,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 267 transitions, 3502 flow [2024-06-28 01:39:42,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 267 transitions, 3329 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:42,283 INFO L231 Difference]: Finished difference. Result has 157 places, 216 transitions, 2646 flow [2024-06-28 01:39:42,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2435, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2646, PETRI_PLACES=157, PETRI_TRANSITIONS=216} [2024-06-28 01:39:42,284 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-28 01:39:42,284 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 216 transitions, 2646 flow [2024-06-28 01:39:42,284 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 01:39:42,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:42,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:42,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:39:42,284 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:42,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:42,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1735064525, now seen corresponding path program 1 times [2024-06-28 01:39:42,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:42,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831547982] [2024-06-28 01:39:42,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:42,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:42,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:42,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831547982] [2024-06-28 01:39:42,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831547982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:42,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:42,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:42,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634452544] [2024-06-28 01:39:42,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:42,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:42,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:42,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:42,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:43,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:43,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 216 transitions, 2646 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:43,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:43,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:43,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:44,288 INFO L124 PetriNetUnfolderBase]: 6257/9650 cut-off events. [2024-06-28 01:39:44,288 INFO L125 PetriNetUnfolderBase]: For 223494/223494 co-relation queries the response was YES. [2024-06-28 01:39:44,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60115 conditions, 9650 events. 6257/9650 cut-off events. For 223494/223494 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 59987 event pairs, 1615 based on Foata normal form. 1/9467 useless extension candidates. Maximal degree in co-relation 60043. Up to 8784 conditions per place. [2024-06-28 01:39:44,386 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 217 selfloop transitions, 18 changer transitions 0/245 dead transitions. [2024-06-28 01:39:44,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 245 transitions, 3302 flow [2024-06-28 01:39:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 01:39:44,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:39:44,388 INFO L175 Difference]: Start difference. First operand has 157 places, 216 transitions, 2646 flow. Second operand 6 states and 143 transitions. [2024-06-28 01:39:44,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 245 transitions, 3302 flow [2024-06-28 01:39:44,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 245 transitions, 3117 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:44,682 INFO L231 Difference]: Finished difference. Result has 157 places, 219 transitions, 2563 flow [2024-06-28 01:39:44,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2465, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2563, PETRI_PLACES=157, PETRI_TRANSITIONS=219} [2024-06-28 01:39:44,683 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 103 predicate places. [2024-06-28 01:39:44,683 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 219 transitions, 2563 flow [2024-06-28 01:39:44,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:44,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:44,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:44,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:39:44,684 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 01:39:44,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:44,684 INFO L85 PathProgramCache]: Analyzing trace with hash 601932725, now seen corresponding path program 2 times [2024-06-28 01:39:44,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:44,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351976979] [2024-06-28 01:39:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:44,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:45,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:45,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:45,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351976979] [2024-06-28 01:39:45,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351976979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:45,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:45,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:45,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980559951] [2024-06-28 01:39:45,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:45,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:45,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:45,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:45,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:45,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:45,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 219 transitions, 2563 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:45,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:45,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:45,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:47,042 INFO L124 PetriNetUnfolderBase]: 6339/9801 cut-off events. [2024-06-28 01:39:47,042 INFO L125 PetriNetUnfolderBase]: For 229925/229925 co-relation queries the response was YES. [2024-06-28 01:39:47,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59664 conditions, 9801 events. 6339/9801 cut-off events. For 229925/229925 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 61271 event pairs, 1859 based on Foata normal form. 6/9641 useless extension candidates. Maximal degree in co-relation 59591. Up to 8639 conditions per place. [2024-06-28 01:39:47,140 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 221 selfloop transitions, 35 changer transitions 0/266 dead transitions. [2024-06-28 01:39:47,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 266 transitions, 3387 flow [2024-06-28 01:39:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:39:47,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 01:39:47,141 INFO L175 Difference]: Start difference. First operand has 157 places, 219 transitions, 2563 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:39:47,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 266 transitions, 3387 flow [2024-06-28 01:39:47,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 266 transitions, 3261 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:47,461 INFO L231 Difference]: Finished difference. Result has 160 places, 222 transitions, 2599 flow [2024-06-28 01:39:47,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2437, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2599, PETRI_PLACES=160, PETRI_TRANSITIONS=222} [2024-06-28 01:39:47,461 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 106 predicate places. [2024-06-28 01:39:47,461 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 222 transitions, 2599 flow [2024-06-28 01:39:47,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:47,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:47,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:47,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:39:47,462 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 01:39:47,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash -275876667, now seen corresponding path program 3 times [2024-06-28 01:39:47,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:47,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145828215] [2024-06-28 01:39:47,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:47,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:48,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:48,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145828215] [2024-06-28 01:39:48,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145828215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:48,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:48,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:48,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021458719] [2024-06-28 01:39:48,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:48,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:48,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:48,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:48,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:48,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:48,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 222 transitions, 2599 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 01:39:48,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:48,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:48,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:49,906 INFO L124 PetriNetUnfolderBase]: 6429/9965 cut-off events. [2024-06-28 01:39:49,906 INFO L125 PetriNetUnfolderBase]: For 244760/244760 co-relation queries the response was YES. [2024-06-28 01:39:49,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61596 conditions, 9965 events. 6429/9965 cut-off events. For 244760/244760 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 62757 event pairs, 1796 based on Foata normal form. 6/9793 useless extension candidates. Maximal degree in co-relation 61522. Up to 8817 conditions per place. [2024-06-28 01:39:49,997 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 228 selfloop transitions, 37 changer transitions 0/275 dead transitions. [2024-06-28 01:39:49,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 275 transitions, 3419 flow [2024-06-28 01:39:49,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:49,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:39:49,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 01:39:49,998 INFO L175 Difference]: Start difference. First operand has 160 places, 222 transitions, 2599 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:39:49,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 275 transitions, 3419 flow [2024-06-28 01:39:50,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 275 transitions, 3281 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:50,331 INFO L231 Difference]: Finished difference. Result has 163 places, 229 transitions, 2668 flow [2024-06-28 01:39:50,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2668, PETRI_PLACES=163, PETRI_TRANSITIONS=229} [2024-06-28 01:39:50,332 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2024-06-28 01:39:50,332 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 229 transitions, 2668 flow [2024-06-28 01:39:50,332 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 01:39:50,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:50,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:50,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:39:50,333 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 01:39:50,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:50,333 INFO L85 PathProgramCache]: Analyzing trace with hash 866707197, now seen corresponding path program 1 times [2024-06-28 01:39:50,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:50,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882522275] [2024-06-28 01:39:50,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:50,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:51,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:51,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:51,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882522275] [2024-06-28 01:39:51,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882522275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:51,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:51,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:51,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046221759] [2024-06-28 01:39:51,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:51,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:51,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:51,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:51,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:51,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:51,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 229 transitions, 2668 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:51,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:51,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:51,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:52,701 INFO L124 PetriNetUnfolderBase]: 6458/10003 cut-off events. [2024-06-28 01:39:52,701 INFO L125 PetriNetUnfolderBase]: For 255058/255070 co-relation queries the response was YES. [2024-06-28 01:39:52,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62499 conditions, 10003 events. 6458/10003 cut-off events. For 255058/255070 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 62978 event pairs, 1814 based on Foata normal form. 11/9837 useless extension candidates. Maximal degree in co-relation 62423. Up to 8779 conditions per place. [2024-06-28 01:39:52,789 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 221 selfloop transitions, 42 changer transitions 0/273 dead transitions. [2024-06-28 01:39:52,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 273 transitions, 3470 flow [2024-06-28 01:39:52,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:52,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:39:52,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 01:39:52,790 INFO L175 Difference]: Start difference. First operand has 163 places, 229 transitions, 2668 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:39:52,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 273 transitions, 3470 flow [2024-06-28 01:39:53,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 273 transitions, 3319 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:53,170 INFO L231 Difference]: Finished difference. Result has 165 places, 233 transitions, 2709 flow [2024-06-28 01:39:53,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2709, PETRI_PLACES=165, PETRI_TRANSITIONS=233} [2024-06-28 01:39:53,171 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 111 predicate places. [2024-06-28 01:39:53,171 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 233 transitions, 2709 flow [2024-06-28 01:39:53,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:53,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:53,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:53,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:39:53,172 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 01:39:53,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash 542236435, now seen corresponding path program 4 times [2024-06-28 01:39:53,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:53,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996279028] [2024-06-28 01:39:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:53,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:53,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:53,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:53,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996279028] [2024-06-28 01:39:53,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996279028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:53,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:53,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:53,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322783143] [2024-06-28 01:39:53,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:53,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:53,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:53,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:53,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:54,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:54,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 233 transitions, 2709 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 01:39:54,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:54,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:54,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:55,656 INFO L124 PetriNetUnfolderBase]: 6499/10062 cut-off events. [2024-06-28 01:39:55,656 INFO L125 PetriNetUnfolderBase]: For 264267/264267 co-relation queries the response was YES. [2024-06-28 01:39:55,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62934 conditions, 10062 events. 6499/10062 cut-off events. For 264267/264267 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 63277 event pairs, 1855 based on Foata normal form. 6/9893 useless extension candidates. Maximal degree in co-relation 62857. Up to 8933 conditions per place. [2024-06-28 01:39:55,747 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 239 selfloop transitions, 40 changer transitions 0/289 dead transitions. [2024-06-28 01:39:55,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 289 transitions, 3680 flow [2024-06-28 01:39:55,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:55,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:39:55,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 01:39:55,749 INFO L175 Difference]: Start difference. First operand has 165 places, 233 transitions, 2709 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:39:55,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 289 transitions, 3680 flow [2024-06-28 01:39:56,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 289 transitions, 3527 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:56,092 INFO L231 Difference]: Finished difference. Result has 171 places, 249 transitions, 2954 flow [2024-06-28 01:39:56,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2954, PETRI_PLACES=171, PETRI_TRANSITIONS=249} [2024-06-28 01:39:56,092 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2024-06-28 01:39:56,092 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 249 transitions, 2954 flow [2024-06-28 01:39:56,093 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 01:39:56,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:56,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:56,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:39:56,093 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 01:39:56,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:56,093 INFO L85 PathProgramCache]: Analyzing trace with hash 857532561, now seen corresponding path program 5 times [2024-06-28 01:39:56,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:56,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300323105] [2024-06-28 01:39:56,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:56,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:56,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:56,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300323105] [2024-06-28 01:39:56,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300323105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:56,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:56,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:56,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846797300] [2024-06-28 01:39:56,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:56,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:56,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:56,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 249 transitions, 2954 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:56,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:56,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:56,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:58,535 INFO L124 PetriNetUnfolderBase]: 6526/10091 cut-off events. [2024-06-28 01:39:58,535 INFO L125 PetriNetUnfolderBase]: For 279345/279360 co-relation queries the response was YES. [2024-06-28 01:39:58,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64555 conditions, 10091 events. 6526/10091 cut-off events. For 279345/279360 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 63489 event pairs, 1863 based on Foata normal form. 16/9934 useless extension candidates. Maximal degree in co-relation 64474. Up to 8955 conditions per place. [2024-06-28 01:39:58,634 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 254 selfloop transitions, 32 changer transitions 0/296 dead transitions. [2024-06-28 01:39:58,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 296 transitions, 3832 flow [2024-06-28 01:39:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:58,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:58,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:39:58,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 01:39:58,635 INFO L175 Difference]: Start difference. First operand has 171 places, 249 transitions, 2954 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:39:58,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 296 transitions, 3832 flow [2024-06-28 01:39:59,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 296 transitions, 3693 flow, removed 50 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:59,058 INFO L231 Difference]: Finished difference. Result has 176 places, 253 transitions, 2998 flow [2024-06-28 01:39:59,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2998, PETRI_PLACES=176, PETRI_TRANSITIONS=253} [2024-06-28 01:39:59,058 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-06-28 01:39:59,058 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 253 transitions, 2998 flow [2024-06-28 01:39:59,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:59,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:59,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:59,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:39:59,059 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:59,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:59,059 INFO L85 PathProgramCache]: Analyzing trace with hash -31959951, now seen corresponding path program 2 times [2024-06-28 01:39:59,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:59,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228278161] [2024-06-28 01:39:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:59,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:59,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:59,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:59,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228278161] [2024-06-28 01:39:59,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228278161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:59,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:59,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:59,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252451175] [2024-06-28 01:39:59,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:59,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:59,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:59,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:59,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:59,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:59,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 253 transitions, 2998 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:59,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:59,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:59,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:01,144 INFO L124 PetriNetUnfolderBase]: 6523/10114 cut-off events. [2024-06-28 01:40:01,145 INFO L125 PetriNetUnfolderBase]: For 283138/283138 co-relation queries the response was YES. [2024-06-28 01:40:01,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64389 conditions, 10114 events. 6523/10114 cut-off events. For 283138/283138 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 63795 event pairs, 1906 based on Foata normal form. 1/9935 useless extension candidates. Maximal degree in co-relation 64307. Up to 9198 conditions per place. [2024-06-28 01:40:01,236 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 246 selfloop transitions, 15 changer transitions 0/271 dead transitions. [2024-06-28 01:40:01,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 271 transitions, 3596 flow [2024-06-28 01:40:01,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:01,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-06-28 01:40:01,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-28 01:40:01,237 INFO L175 Difference]: Start difference. First operand has 176 places, 253 transitions, 2998 flow. Second operand 7 states and 146 transitions. [2024-06-28 01:40:01,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 271 transitions, 3596 flow [2024-06-28 01:40:01,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 271 transitions, 3443 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:01,600 INFO L231 Difference]: Finished difference. Result has 178 places, 255 transitions, 2914 flow [2024-06-28 01:40:01,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2847, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2914, PETRI_PLACES=178, PETRI_TRANSITIONS=255} [2024-06-28 01:40:01,601 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 124 predicate places. [2024-06-28 01:40:01,601 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 255 transitions, 2914 flow [2024-06-28 01:40:01,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:01,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:01,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:01,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:40:01,601 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:01,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:01,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1095349282, now seen corresponding path program 1 times [2024-06-28 01:40:01,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:01,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853856239] [2024-06-28 01:40:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:01,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:02,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:02,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853856239] [2024-06-28 01:40:02,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853856239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:02,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:02,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:02,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456165745] [2024-06-28 01:40:02,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:02,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:02,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:02,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:02,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:02,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:02,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 255 transitions, 2914 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:02,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:02,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:02,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:03,749 INFO L124 PetriNetUnfolderBase]: 6535/10168 cut-off events. [2024-06-28 01:40:03,749 INFO L125 PetriNetUnfolderBase]: For 286946/286946 co-relation queries the response was YES. [2024-06-28 01:40:03,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63958 conditions, 10168 events. 6535/10168 cut-off events. For 286946/286946 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 64578 event pairs, 1877 based on Foata normal form. 3/9979 useless extension candidates. Maximal degree in co-relation 63874. Up to 9085 conditions per place. [2024-06-28 01:40:03,834 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 233 selfloop transitions, 42 changer transitions 0/285 dead transitions. [2024-06-28 01:40:03,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 285 transitions, 3702 flow [2024-06-28 01:40:03,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:03,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:40:03,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:40:03,835 INFO L175 Difference]: Start difference. First operand has 178 places, 255 transitions, 2914 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:40:03,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 285 transitions, 3702 flow [2024-06-28 01:40:04,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 285 transitions, 3653 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:04,127 INFO L231 Difference]: Finished difference. Result has 179 places, 261 transitions, 3072 flow [2024-06-28 01:40:04,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2865, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3072, PETRI_PLACES=179, PETRI_TRANSITIONS=261} [2024-06-28 01:40:04,128 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 125 predicate places. [2024-06-28 01:40:04,128 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 261 transitions, 3072 flow [2024-06-28 01:40:04,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:04,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:04,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:04,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:40:04,129 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 01:40:04,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:04,129 INFO L85 PathProgramCache]: Analyzing trace with hash -30943988, now seen corresponding path program 2 times [2024-06-28 01:40:04,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:04,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709698740] [2024-06-28 01:40:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:04,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:04,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:04,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709698740] [2024-06-28 01:40:04,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709698740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:04,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:04,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:04,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454127896] [2024-06-28 01:40:04,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:04,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:04,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:04,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:04,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:04,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:04,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 261 transitions, 3072 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:04,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:04,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:04,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:06,360 INFO L124 PetriNetUnfolderBase]: 6503/10100 cut-off events. [2024-06-28 01:40:06,360 INFO L125 PetriNetUnfolderBase]: For 295130/295145 co-relation queries the response was YES. [2024-06-28 01:40:06,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63982 conditions, 10100 events. 6503/10100 cut-off events. For 295130/295145 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 63838 event pairs, 1888 based on Foata normal form. 5/9920 useless extension candidates. Maximal degree in co-relation 63898. Up to 9039 conditions per place. [2024-06-28 01:40:06,451 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 227 selfloop transitions, 44 changer transitions 0/281 dead transitions. [2024-06-28 01:40:06,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 281 transitions, 3672 flow [2024-06-28 01:40:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:40:06,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:40:06,452 INFO L175 Difference]: Start difference. First operand has 179 places, 261 transitions, 3072 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:40:06,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 281 transitions, 3672 flow [2024-06-28 01:40:06,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 281 transitions, 3586 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:06,790 INFO L231 Difference]: Finished difference. Result has 182 places, 261 transitions, 3084 flow [2024-06-28 01:40:06,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3084, PETRI_PLACES=182, PETRI_TRANSITIONS=261} [2024-06-28 01:40:06,790 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 128 predicate places. [2024-06-28 01:40:06,790 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 261 transitions, 3084 flow [2024-06-28 01:40:06,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:06,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:06,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:06,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:40:06,791 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:06,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:06,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1205412592, now seen corresponding path program 1 times [2024-06-28 01:40:06,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:06,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635449609] [2024-06-28 01:40:06,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:06,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:07,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:07,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635449609] [2024-06-28 01:40:07,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635449609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:07,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:07,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:07,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131436342] [2024-06-28 01:40:07,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:07,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:07,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:07,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:07,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:07,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 48 [2024-06-28 01:40:07,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 261 transitions, 3084 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:07,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:07,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 48 [2024-06-28 01:40:07,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:09,245 INFO L124 PetriNetUnfolderBase]: 6945/10486 cut-off events. [2024-06-28 01:40:09,245 INFO L125 PetriNetUnfolderBase]: For 307858/307858 co-relation queries the response was YES. [2024-06-28 01:40:09,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66515 conditions, 10486 events. 6945/10486 cut-off events. For 307858/307858 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 63396 event pairs, 2072 based on Foata normal form. 3/10329 useless extension candidates. Maximal degree in co-relation 66430. Up to 9790 conditions per place. [2024-06-28 01:40:09,346 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 260 selfloop transitions, 21 changer transitions 0/289 dead transitions. [2024-06-28 01:40:09,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 289 transitions, 3766 flow [2024-06-28 01:40:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-28 01:40:09,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-28 01:40:09,347 INFO L175 Difference]: Start difference. First operand has 182 places, 261 transitions, 3084 flow. Second operand 7 states and 151 transitions. [2024-06-28 01:40:09,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 289 transitions, 3766 flow [2024-06-28 01:40:09,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 289 transitions, 3618 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:09,723 INFO L231 Difference]: Finished difference. Result has 183 places, 264 transitions, 3032 flow [2024-06-28 01:40:09,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2936, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3032, PETRI_PLACES=183, PETRI_TRANSITIONS=264} [2024-06-28 01:40:09,724 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 129 predicate places. [2024-06-28 01:40:09,724 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 264 transitions, 3032 flow [2024-06-28 01:40:09,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:09,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:09,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:09,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:40:09,724 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 01:40:09,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:09,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2096381490, now seen corresponding path program 1 times [2024-06-28 01:40:09,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:09,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587321693] [2024-06-28 01:40:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:09,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:10,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:10,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587321693] [2024-06-28 01:40:10,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587321693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:10,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:10,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:10,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658575867] [2024-06-28 01:40:10,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:10,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:10,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:10,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 264 transitions, 3032 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:10,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:10,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:10,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:12,377 INFO L124 PetriNetUnfolderBase]: 7067/10632 cut-off events. [2024-06-28 01:40:12,377 INFO L125 PetriNetUnfolderBase]: For 367662/367681 co-relation queries the response was YES. [2024-06-28 01:40:12,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71955 conditions, 10632 events. 7067/10632 cut-off events. For 367662/367681 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 64990 event pairs, 877 based on Foata normal form. 32/10540 useless extension candidates. Maximal degree in co-relation 71869. Up to 6356 conditions per place. [2024-06-28 01:40:12,490 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 230 selfloop transitions, 117 changer transitions 0/357 dead transitions. [2024-06-28 01:40:12,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 357 transitions, 4910 flow [2024-06-28 01:40:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:40:12,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:40:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-28 01:40:12,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-06-28 01:40:12,491 INFO L175 Difference]: Start difference. First operand has 183 places, 264 transitions, 3032 flow. Second operand 9 states and 249 transitions. [2024-06-28 01:40:12,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 357 transitions, 4910 flow [2024-06-28 01:40:13,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 357 transitions, 4838 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:13,010 INFO L231 Difference]: Finished difference. Result has 190 places, 273 transitions, 3508 flow [2024-06-28 01:40:13,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3508, PETRI_PLACES=190, PETRI_TRANSITIONS=273} [2024-06-28 01:40:13,012 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 136 predicate places. [2024-06-28 01:40:13,012 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 273 transitions, 3508 flow [2024-06-28 01:40:13,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:13,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:13,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:13,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:40:13,013 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 01:40:13,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:13,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2098259160, now seen corresponding path program 2 times [2024-06-28 01:40:13,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:13,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213612757] [2024-06-28 01:40:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:13,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:13,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:14,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:14,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213612757] [2024-06-28 01:40:14,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213612757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:14,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:14,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:14,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421426147] [2024-06-28 01:40:14,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:14,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:14,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:14,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:14,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:14,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:14,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 273 transitions, 3508 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:14,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:14,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:14,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:16,296 INFO L124 PetriNetUnfolderBase]: 7568/11658 cut-off events. [2024-06-28 01:40:16,296 INFO L125 PetriNetUnfolderBase]: For 471601/471620 co-relation queries the response was YES. [2024-06-28 01:40:16,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82461 conditions, 11658 events. 7568/11658 cut-off events. For 471601/471620 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 74788 event pairs, 1616 based on Foata normal form. 56/11521 useless extension candidates. Maximal degree in co-relation 82371. Up to 8486 conditions per place. [2024-06-28 01:40:16,410 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 260 selfloop transitions, 93 changer transitions 0/363 dead transitions. [2024-06-28 01:40:16,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 363 transitions, 4961 flow [2024-06-28 01:40:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:16,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 296 transitions. [2024-06-28 01:40:16,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5606060606060606 [2024-06-28 01:40:16,412 INFO L175 Difference]: Start difference. First operand has 190 places, 273 transitions, 3508 flow. Second operand 11 states and 296 transitions. [2024-06-28 01:40:16,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 363 transitions, 4961 flow [2024-06-28 01:40:17,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 363 transitions, 4777 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:17,163 INFO L231 Difference]: Finished difference. Result has 198 places, 276 transitions, 3634 flow [2024-06-28 01:40:17,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3326, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3634, PETRI_PLACES=198, PETRI_TRANSITIONS=276} [2024-06-28 01:40:17,164 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-28 01:40:17,164 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 276 transitions, 3634 flow [2024-06-28 01:40:17,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:17,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:17,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:17,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:40:17,164 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 01:40:17,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:17,165 INFO L85 PathProgramCache]: Analyzing trace with hash 2098255440, now seen corresponding path program 3 times [2024-06-28 01:40:17,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:17,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020105256] [2024-06-28 01:40:17,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:17,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:18,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:18,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020105256] [2024-06-28 01:40:18,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020105256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:18,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:18,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:18,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846408387] [2024-06-28 01:40:18,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:18,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:18,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:18,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:18,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:18,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:18,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 276 transitions, 3634 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:18,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:18,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:18,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:20,303 INFO L124 PetriNetUnfolderBase]: 8544/12865 cut-off events. [2024-06-28 01:40:20,303 INFO L125 PetriNetUnfolderBase]: For 515774/515793 co-relation queries the response was YES. [2024-06-28 01:40:20,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94684 conditions, 12865 events. 8544/12865 cut-off events. For 515774/515793 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 81418 event pairs, 1569 based on Foata normal form. 32/12787 useless extension candidates. Maximal degree in co-relation 94592. Up to 8982 conditions per place. [2024-06-28 01:40:20,463 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 245 selfloop transitions, 129 changer transitions 0/384 dead transitions. [2024-06-28 01:40:20,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 384 transitions, 5873 flow [2024-06-28 01:40:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:40:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:40:20,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-28 01:40:20,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-28 01:40:20,465 INFO L175 Difference]: Start difference. First operand has 198 places, 276 transitions, 3634 flow. Second operand 9 states and 246 transitions. [2024-06-28 01:40:20,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 384 transitions, 5873 flow [2024-06-28 01:40:21,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 384 transitions, 5556 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:21,738 INFO L231 Difference]: Finished difference. Result has 199 places, 294 transitions, 4007 flow [2024-06-28 01:40:21,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3393, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4007, PETRI_PLACES=199, PETRI_TRANSITIONS=294} [2024-06-28 01:40:21,738 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 145 predicate places. [2024-06-28 01:40:21,738 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 294 transitions, 4007 flow [2024-06-28 01:40:21,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:21,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:21,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:21,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:40:21,739 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 01:40:21,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:21,739 INFO L85 PathProgramCache]: Analyzing trace with hash -2110020046, now seen corresponding path program 4 times [2024-06-28 01:40:21,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:21,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243844778] [2024-06-28 01:40:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:21,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:22,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:22,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243844778] [2024-06-28 01:40:22,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243844778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:22,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:22,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:22,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622143463] [2024-06-28 01:40:22,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:22,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:22,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:22,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:22,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:22,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 294 transitions, 4007 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:22,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:22,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:22,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:25,135 INFO L124 PetriNetUnfolderBase]: 9173/14106 cut-off events. [2024-06-28 01:40:25,135 INFO L125 PetriNetUnfolderBase]: For 523829/523848 co-relation queries the response was YES. [2024-06-28 01:40:25,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100074 conditions, 14106 events. 9173/14106 cut-off events. For 523829/523848 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 93256 event pairs, 2246 based on Foata normal form. 32/13907 useless extension candidates. Maximal degree in co-relation 99980. Up to 10465 conditions per place. [2024-06-28 01:40:25,296 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 290 selfloop transitions, 74 changer transitions 0/374 dead transitions. [2024-06-28 01:40:25,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 374 transitions, 5568 flow [2024-06-28 01:40:25,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:40:25,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:40:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-28 01:40:25,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-06-28 01:40:25,298 INFO L175 Difference]: Start difference. First operand has 199 places, 294 transitions, 4007 flow. Second operand 9 states and 242 transitions. [2024-06-28 01:40:25,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 374 transitions, 5568 flow [2024-06-28 01:40:26,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 374 transitions, 5332 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:26,323 INFO L231 Difference]: Finished difference. Result has 205 places, 300 transitions, 4148 flow [2024-06-28 01:40:26,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3771, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4148, PETRI_PLACES=205, PETRI_TRANSITIONS=300} [2024-06-28 01:40:26,324 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-28 01:40:26,324 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 300 transitions, 4148 flow [2024-06-28 01:40:26,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:26,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:26,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:26,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:40:26,325 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:26,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:26,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2047871430, now seen corresponding path program 1 times [2024-06-28 01:40:26,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:26,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267584822] [2024-06-28 01:40:26,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:26,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:27,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:27,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267584822] [2024-06-28 01:40:27,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267584822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:27,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:27,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:40:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937669365] [2024-06-28 01:40:27,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:27,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:40:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:27,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:40:27,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:40:27,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:27,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 300 transitions, 4148 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:27,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:27,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:27,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:29,332 INFO L124 PetriNetUnfolderBase]: 9210/14265 cut-off events. [2024-06-28 01:40:29,332 INFO L125 PetriNetUnfolderBase]: For 517459/517478 co-relation queries the response was YES. [2024-06-28 01:40:29,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101650 conditions, 14265 events. 9210/14265 cut-off events. For 517459/517478 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 95791 event pairs, 2411 based on Foata normal form. 12/14026 useless extension candidates. Maximal degree in co-relation 101553. Up to 12228 conditions per place. [2024-06-28 01:40:29,867 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 266 selfloop transitions, 69 changer transitions 0/345 dead transitions. [2024-06-28 01:40:29,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 345 transitions, 5220 flow [2024-06-28 01:40:29,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:29,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:40:29,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-28 01:40:29,869 INFO L175 Difference]: Start difference. First operand has 205 places, 300 transitions, 4148 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:40:29,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 345 transitions, 5220 flow [2024-06-28 01:40:30,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 345 transitions, 5043 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:30,896 INFO L231 Difference]: Finished difference. Result has 208 places, 305 transitions, 4222 flow [2024-06-28 01:40:30,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3976, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4222, PETRI_PLACES=208, PETRI_TRANSITIONS=305} [2024-06-28 01:40:30,896 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 154 predicate places. [2024-06-28 01:40:30,896 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 305 transitions, 4222 flow [2024-06-28 01:40:30,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:30,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:30,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:30,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:40:30,897 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:30,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:30,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1464006224, now seen corresponding path program 5 times [2024-06-28 01:40:30,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:30,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252922691] [2024-06-28 01:40:30,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:30,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:31,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:31,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252922691] [2024-06-28 01:40:31,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252922691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:31,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:31,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:31,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498369386] [2024-06-28 01:40:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:31,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:31,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:31,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:32,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:32,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 305 transitions, 4222 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:32,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:32,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:32,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:34,694 INFO L124 PetriNetUnfolderBase]: 10038/15463 cut-off events. [2024-06-28 01:40:34,694 INFO L125 PetriNetUnfolderBase]: For 620006/620025 co-relation queries the response was YES. [2024-06-28 01:40:34,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113880 conditions, 15463 events. 10038/15463 cut-off events. For 620006/620025 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 104419 event pairs, 2263 based on Foata normal form. 32/15264 useless extension candidates. Maximal degree in co-relation 113781. Up to 11432 conditions per place. [2024-06-28 01:40:34,896 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 289 selfloop transitions, 90 changer transitions 0/389 dead transitions. [2024-06-28 01:40:34,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 389 transitions, 5958 flow [2024-06-28 01:40:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:40:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:40:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-06-28 01:40:34,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5787037037037037 [2024-06-28 01:40:34,897 INFO L175 Difference]: Start difference. First operand has 208 places, 305 transitions, 4222 flow. Second operand 9 states and 250 transitions. [2024-06-28 01:40:34,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 389 transitions, 5958 flow [2024-06-28 01:40:36,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 389 transitions, 5827 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:36,012 INFO L231 Difference]: Finished difference. Result has 214 places, 311 transitions, 4516 flow [2024-06-28 01:40:36,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4091, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4516, PETRI_PLACES=214, PETRI_TRANSITIONS=311} [2024-06-28 01:40:36,013 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 160 predicate places. [2024-06-28 01:40:36,013 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 311 transitions, 4516 flow [2024-06-28 01:40:36,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:36,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:36,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:36,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:40:36,013 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 01:40:36,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1464009944, now seen corresponding path program 6 times [2024-06-28 01:40:36,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:36,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299363199] [2024-06-28 01:40:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:36,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:37,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:37,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299363199] [2024-06-28 01:40:37,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299363199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:37,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:37,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:37,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157363395] [2024-06-28 01:40:37,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:37,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:37,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:37,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:37,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:37,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:37,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 311 transitions, 4516 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:37,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:37,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:37,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:40,420 INFO L124 PetriNetUnfolderBase]: 10396/15589 cut-off events. [2024-06-28 01:40:40,420 INFO L125 PetriNetUnfolderBase]: For 705524/705543 co-relation queries the response was YES. [2024-06-28 01:40:40,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121025 conditions, 15589 events. 10396/15589 cut-off events. For 705524/705543 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 101621 event pairs, 2253 based on Foata normal form. 38/15541 useless extension candidates. Maximal degree in co-relation 120924. Up to 12710 conditions per place. [2024-06-28 01:40:40,592 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 258 selfloop transitions, 127 changer transitions 0/395 dead transitions. [2024-06-28 01:40:40,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 395 transitions, 6352 flow [2024-06-28 01:40:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:40:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:40:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-28 01:40:40,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5717592592592593 [2024-06-28 01:40:40,594 INFO L175 Difference]: Start difference. First operand has 214 places, 311 transitions, 4516 flow. Second operand 9 states and 247 transitions. [2024-06-28 01:40:40,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 395 transitions, 6352 flow [2024-06-28 01:40:42,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 395 transitions, 6137 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:42,246 INFO L231 Difference]: Finished difference. Result has 218 places, 314 transitions, 4701 flow [2024-06-28 01:40:42,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4305, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4701, PETRI_PLACES=218, PETRI_TRANSITIONS=314} [2024-06-28 01:40:42,247 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-06-28 01:40:42,247 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 314 transitions, 4701 flow [2024-06-28 01:40:42,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:42,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:42,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:42,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:40:42,248 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:42,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:42,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1006137542, now seen corresponding path program 1 times [2024-06-28 01:40:42,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:42,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504363819] [2024-06-28 01:40:42,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:42,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:43,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:43,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504363819] [2024-06-28 01:40:43,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504363819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:43,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:43,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:43,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234696227] [2024-06-28 01:40:43,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:43,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:43,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:43,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:43,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:43,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:43,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 314 transitions, 4701 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:43,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:43,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:43,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:46,378 INFO L124 PetriNetUnfolderBase]: 10470/16321 cut-off events. [2024-06-28 01:40:46,378 INFO L125 PetriNetUnfolderBase]: For 704628/704647 co-relation queries the response was YES. [2024-06-28 01:40:46,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122594 conditions, 16321 events. 10470/16321 cut-off events. For 704628/704647 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 113449 event pairs, 2819 based on Foata normal form. 14/16045 useless extension candidates. Maximal degree in co-relation 122491. Up to 14094 conditions per place. [2024-06-28 01:40:46,720 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 288 selfloop transitions, 67 changer transitions 0/365 dead transitions. [2024-06-28 01:40:46,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 365 transitions, 5768 flow [2024-06-28 01:40:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-28 01:40:46,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-28 01:40:46,721 INFO L175 Difference]: Start difference. First operand has 218 places, 314 transitions, 4701 flow. Second operand 8 states and 205 transitions. [2024-06-28 01:40:46,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 365 transitions, 5768 flow [2024-06-28 01:40:48,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 365 transitions, 5435 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 01:40:48,051 INFO L231 Difference]: Finished difference. Result has 219 places, 317 transitions, 4619 flow [2024-06-28 01:40:48,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4368, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4619, PETRI_PLACES=219, PETRI_TRANSITIONS=317} [2024-06-28 01:40:48,052 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 165 predicate places. [2024-06-28 01:40:48,052 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 317 transitions, 4619 flow [2024-06-28 01:40:48,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:48,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:48,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:48,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:40:48,052 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:48,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:48,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1006345304, now seen corresponding path program 7 times [2024-06-28 01:40:48,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:48,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006620567] [2024-06-28 01:40:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:49,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:49,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006620567] [2024-06-28 01:40:49,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006620567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:49,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:49,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:49,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729097068] [2024-06-28 01:40:49,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:49,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:49,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:49,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:49,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:49,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:49,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 317 transitions, 4619 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:49,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:49,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:49,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:52,780 INFO L124 PetriNetUnfolderBase]: 10962/17071 cut-off events. [2024-06-28 01:40:52,780 INFO L125 PetriNetUnfolderBase]: For 788880/788899 co-relation queries the response was YES. [2024-06-28 01:40:52,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127246 conditions, 17071 events. 10962/17071 cut-off events. For 788880/788899 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 119241 event pairs, 2907 based on Foata normal form. 56/16835 useless extension candidates. Maximal degree in co-relation 127142. Up to 14160 conditions per place. [2024-06-28 01:40:52,984 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 298 selfloop transitions, 73 changer transitions 0/381 dead transitions. [2024-06-28 01:40:52,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 381 transitions, 5810 flow [2024-06-28 01:40:52,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:40:52,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:40:52,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 01:40:52,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:40:52,986 INFO L175 Difference]: Start difference. First operand has 219 places, 317 transitions, 4619 flow. Second operand 9 states and 234 transitions. [2024-06-28 01:40:52,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 381 transitions, 5810 flow [2024-06-28 01:40:54,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 381 transitions, 5586 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:54,315 INFO L231 Difference]: Finished difference. Result has 222 places, 320 transitions, 4688 flow [2024-06-28 01:40:54,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4395, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4688, PETRI_PLACES=222, PETRI_TRANSITIONS=320} [2024-06-28 01:40:54,316 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 168 predicate places. [2024-06-28 01:40:54,316 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 320 transitions, 4688 flow [2024-06-28 01:40:54,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:54,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:54,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:54,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:40:54,317 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:54,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:54,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1469731676, now seen corresponding path program 2 times [2024-06-28 01:40:54,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:54,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480885194] [2024-06-28 01:40:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:54,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:55,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:55,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480885194] [2024-06-28 01:40:55,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480885194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:55,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:55,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:55,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847450729] [2024-06-28 01:40:55,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:55,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:55,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:55,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:55,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:55,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:55,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 320 transitions, 4688 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:55,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:55,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:55,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:58,936 INFO L124 PetriNetUnfolderBase]: 11108/17357 cut-off events. [2024-06-28 01:40:58,936 INFO L125 PetriNetUnfolderBase]: For 797195/797214 co-relation queries the response was YES. [2024-06-28 01:40:59,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130334 conditions, 17357 events. 11108/17357 cut-off events. For 797195/797214 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 122059 event pairs, 2877 based on Foata normal form. 14/17054 useless extension candidates. Maximal degree in co-relation 130229. Up to 14710 conditions per place. [2024-06-28 01:40:59,252 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 288 selfloop transitions, 78 changer transitions 0/376 dead transitions. [2024-06-28 01:40:59,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 376 transitions, 6071 flow [2024-06-28 01:40:59,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:40:59,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:40:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:40:59,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-28 01:40:59,253 INFO L175 Difference]: Start difference. First operand has 222 places, 320 transitions, 4688 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:40:59,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 376 transitions, 6071 flow [2024-06-28 01:41:00,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 376 transitions, 5847 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 01:41:00,771 INFO L231 Difference]: Finished difference. Result has 224 places, 326 transitions, 4877 flow [2024-06-28 01:41:00,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4464, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4877, PETRI_PLACES=224, PETRI_TRANSITIONS=326} [2024-06-28 01:41:00,771 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-28 01:41:00,771 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 326 transitions, 4877 flow [2024-06-28 01:41:00,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:00,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:00,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:00,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:41:00,772 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 01:41:00,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:00,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1464160046, now seen corresponding path program 3 times [2024-06-28 01:41:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:00,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440039869] [2024-06-28 01:41:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:00,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:01,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:01,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:01,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440039869] [2024-06-28 01:41:01,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440039869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:01,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:01,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:01,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756909785] [2024-06-28 01:41:01,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:01,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:01,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:01,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:01,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:01,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:41:01,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 326 transitions, 4877 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:01,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:01,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:41:01,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:05,503 INFO L124 PetriNetUnfolderBase]: 11906/18631 cut-off events. [2024-06-28 01:41:05,503 INFO L125 PetriNetUnfolderBase]: For 808329/808345 co-relation queries the response was YES. [2024-06-28 01:41:05,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139013 conditions, 18631 events. 11906/18631 cut-off events. For 808329/808345 co-relation queries the response was YES. Maximal size of possible extension queue 866. Compared 131834 event pairs, 3277 based on Foata normal form. 13/18295 useless extension candidates. Maximal degree in co-relation 138906. Up to 16165 conditions per place. [2024-06-28 01:41:05,710 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 337 selfloop transitions, 72 changer transitions 0/419 dead transitions. [2024-06-28 01:41:05,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 419 transitions, 6895 flow [2024-06-28 01:41:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:05,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 01:41:05,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 01:41:05,711 INFO L175 Difference]: Start difference. First operand has 224 places, 326 transitions, 4877 flow. Second operand 9 states and 219 transitions. [2024-06-28 01:41:05,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 419 transitions, 6895 flow [2024-06-28 01:41:07,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 419 transitions, 6641 flow, removed 68 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:07,665 INFO L231 Difference]: Finished difference. Result has 232 places, 362 transitions, 5673 flow [2024-06-28 01:41:07,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4676, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5673, PETRI_PLACES=232, PETRI_TRANSITIONS=362} [2024-06-28 01:41:07,665 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 178 predicate places. [2024-06-28 01:41:07,666 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 362 transitions, 5673 flow [2024-06-28 01:41:07,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:07,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:07,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:07,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:41:07,666 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 01:41:07,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1464154094, now seen corresponding path program 8 times [2024-06-28 01:41:07,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:07,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448994382] [2024-06-28 01:41:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:07,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:08,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:08,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:08,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448994382] [2024-06-28 01:41:08,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448994382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:08,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:08,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:08,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045095085] [2024-06-28 01:41:08,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:08,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:08,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:08,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:08,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:08,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:41:08,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 362 transitions, 5673 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:08,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:08,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:41:08,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:12,739 INFO L124 PetriNetUnfolderBase]: 12384/19358 cut-off events. [2024-06-28 01:41:12,739 INFO L125 PetriNetUnfolderBase]: For 936210/936232 co-relation queries the response was YES. [2024-06-28 01:41:12,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147725 conditions, 19358 events. 12384/19358 cut-off events. For 936210/936232 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 137809 event pairs, 3122 based on Foata normal form. 67/19062 useless extension candidates. Maximal degree in co-relation 147613. Up to 15518 conditions per place. [2024-06-28 01:41:13,139 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 308 selfloop transitions, 112 changer transitions 0/430 dead transitions. [2024-06-28 01:41:13,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 430 transitions, 7086 flow [2024-06-28 01:41:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:13,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 239 transitions. [2024-06-28 01:41:13,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532407407407407 [2024-06-28 01:41:13,149 INFO L175 Difference]: Start difference. First operand has 232 places, 362 transitions, 5673 flow. Second operand 9 states and 239 transitions. [2024-06-28 01:41:13,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 430 transitions, 7086 flow [2024-06-28 01:41:15,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 430 transitions, 6865 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:15,371 INFO L231 Difference]: Finished difference. Result has 237 places, 365 transitions, 5836 flow [2024-06-28 01:41:15,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5452, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5836, PETRI_PLACES=237, PETRI_TRANSITIONS=365} [2024-06-28 01:41:15,371 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 183 predicate places. [2024-06-28 01:41:15,372 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 365 transitions, 5836 flow [2024-06-28 01:41:15,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:15,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:15,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:15,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:41:15,372 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:15,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:15,373 INFO L85 PathProgramCache]: Analyzing trace with hash 903594266, now seen corresponding path program 2 times [2024-06-28 01:41:15,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:15,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204940453] [2024-06-28 01:41:15,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:15,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:16,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:16,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204940453] [2024-06-28 01:41:16,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204940453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:16,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:16,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521735193] [2024-06-28 01:41:16,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:16,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:16,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:16,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:16,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:41:16,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 365 transitions, 5836 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:16,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:16,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:41:16,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:19,977 INFO L124 PetriNetUnfolderBase]: 12552/19720 cut-off events. [2024-06-28 01:41:19,977 INFO L125 PetriNetUnfolderBase]: For 917865/917881 co-relation queries the response was YES. [2024-06-28 01:41:20,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151910 conditions, 19720 events. 12552/19720 cut-off events. For 917865/917881 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 141168 event pairs, 3285 based on Foata normal form. 15/19332 useless extension candidates. Maximal degree in co-relation 151797. Up to 16488 conditions per place. [2024-06-28 01:41:20,201 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 299 selfloop transitions, 103 changer transitions 0/412 dead transitions. [2024-06-28 01:41:20,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 412 transitions, 7258 flow [2024-06-28 01:41:20,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:20,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:20,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:41:20,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-06-28 01:41:20,202 INFO L175 Difference]: Start difference. First operand has 237 places, 365 transitions, 5836 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:41:20,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 412 transitions, 7258 flow [2024-06-28 01:41:22,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 412 transitions, 6917 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 01:41:22,818 INFO L231 Difference]: Finished difference. Result has 238 places, 378 transitions, 6074 flow [2024-06-28 01:41:22,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5521, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6074, PETRI_PLACES=238, PETRI_TRANSITIONS=378} [2024-06-28 01:41:22,818 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 184 predicate places. [2024-06-28 01:41:22,818 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 378 transitions, 6074 flow [2024-06-28 01:41:22,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:22,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:22,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:22,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:41:22,819 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:22,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:22,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2047572528, now seen corresponding path program 1 times [2024-06-28 01:41:22,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:22,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004411736] [2024-06-28 01:41:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:22,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat