./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix025_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix025_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:29:35,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:29:35,136 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:29:35,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:29:35,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:29:35,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:29:35,175 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:29:35,176 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:29:35,177 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:29:35,180 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:29:35,181 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:29:35,181 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:29:35,182 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:29:35,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:29:35,184 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:29:35,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:29:35,184 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:29:35,185 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:29:35,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:29:35,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:29:35,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:29:35,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:29:35,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:29:35,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:29:35,187 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:29:35,187 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:29:35,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:29:35,188 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:29:35,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:29:35,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:29:35,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:29:35,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:29:35,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:29:35,190 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:29:35,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:29:35,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:29:35,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:29:35,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:29:35,192 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:29:35,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:29:35,192 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:29:35,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:29:35,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:29:35,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:29:35,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:29:35,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:29:35,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:29:35,513 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:29:35,514 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:29:35,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i [2024-06-28 01:29:36,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:29:37,023 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:29:37,024 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i [2024-06-28 01:29:37,047 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c22a2ca9/67fb2e86814b4c60b553ac646d4dec2c/FLAG974e2380b [2024-06-28 01:29:37,061 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c22a2ca9/67fb2e86814b4c60b553ac646d4dec2c [2024-06-28 01:29:37,063 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:29:37,063 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:29:37,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix025_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 01:29:37,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:29:37,274 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:29:37,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:29:37,275 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:29:37,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:29:37,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:29:37" (1/2) ... [2024-06-28 01:29:37,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597f15a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:29:37, skipping insertion in model container [2024-06-28 01:29:37,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:29:37" (1/2) ... [2024-06-28 01:29:37,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@557271c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:29:37, skipping insertion in model container [2024-06-28 01:29:37,285 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:29:37" (2/2) ... [2024-06-28 01:29:37,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597f15a3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:37, skipping insertion in model container [2024-06-28 01:29:37,285 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:29:37" (2/2) ... [2024-06-28 01:29:37,286 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:29:37,396 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:29:37,398 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:29:37,398 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:29:37,398 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ((((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && (z == 0 || z == 1)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0) [2024-06-28 01:29:37,399 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:29:37,399 INFO L106 edCorrectnessWitness]: ghost_update [L835-L835] multithreaded = 1; [2024-06-28 01:29:37,442 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:29:37,601 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/mix025_pso.opt_rmo.opt.i[999,1012] [2024-06-28 01:29:37,764 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:29:37,773 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:29:37,809 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/mix025_pso.opt_rmo.opt.i[999,1012] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:29:37,920 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:29:37,956 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:29:37,957 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:29:37 WrapperNode [2024-06-28 01:29:37,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:29:37,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:29:37,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:29:37,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:29:37,966 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,003 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,045 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2024-06-28 01:29:38,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:29:38,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:29:38,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:29:38,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:29:38,070 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,070 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,088 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,111 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 01:29:38,117 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,117 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,128 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,139 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,141 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,149 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:29:38,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:29:38,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:29:38,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:29:38,156 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 01:29:37" (1/1) ... [2024-06-28 01:29:38,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:29:38,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:29:38,187 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 01:29:38,215 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 01:29:38,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:29:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:29:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:29:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:29:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:29:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:29:38,230 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:29:38,230 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:29:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:29:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:29:38,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:29:38,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:29:38,233 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 01:29:38,367 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:29:38,370 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:29:38,742 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:29:38,742 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:29:38,941 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:29:38,942 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:29:38,942 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:29:38 BoogieIcfgContainer [2024-06-28 01:29:38,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:29:38,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:29:38,945 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:29:38,948 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:29:38,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:29:37" (1/4) ... [2024-06-28 01:29:38,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26987e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:29:38, skipping insertion in model container [2024-06-28 01:29:38,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:29:37" (2/4) ... [2024-06-28 01:29:38,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26987e90 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:29:38, skipping insertion in model container [2024-06-28 01:29:38,951 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 01:29:37" (3/4) ... [2024-06-28 01:29:38,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26987e90 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:29:38, skipping insertion in model container [2024-06-28 01:29:38,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:29:38" (4/4) ... [2024-06-28 01:29:38,953 INFO L112 eAbstractionObserver]: Analyzing ICFG mix025_pso.opt_rmo.opt.i [2024-06-28 01:29:38,970 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:29:38,970 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:29:38,970 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:29:39,020 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:29:39,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:29:39,093 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:29:39,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:29:39,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:29:39,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:29:39,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-28 01:29:39,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:29:39,164 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;@3f589654, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:29:39,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:29:39,192 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:29:39,193 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:29:39,193 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:29:39,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:39,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:29:39,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:39,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:39,202 INFO L85 PathProgramCache]: Analyzing trace with hash 345069058, now seen corresponding path program 1 times [2024-06-28 01:29:39,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:39,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278805024] [2024-06-28 01:29:39,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:39,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:40,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:40,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278805024] [2024-06-28 01:29:40,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278805024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:40,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:40,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:29:40,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928968894] [2024-06-28 01:29:40,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:40,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:29:40,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:40,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:29:40,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:29:40,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-28 01:29:40,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:40,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:40,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-28 01:29:40,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:41,184 INFO L124 PetriNetUnfolderBase]: 3076/5212 cut-off events. [2024-06-28 01:29:41,185 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-28 01:29:41,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9758 conditions, 5212 events. 3076/5212 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 34310 event pairs, 2454 based on Foata normal form. 141/4868 useless extension candidates. Maximal degree in co-relation 9746. Up to 4447 conditions per place. [2024-06-28 01:29:41,226 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 40 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:29:41,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 221 flow [2024-06-28 01:29:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:29:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:29:41,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-28 01:29:41,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6950354609929078 [2024-06-28 01:29:41,239 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 98 transitions. [2024-06-28 01:29:41,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 221 flow [2024-06-28 01:29:41,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:41,247 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-28 01:29:41,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 01:29:41,252 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:29:41,253 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-28 01:29:41,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:41,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:41,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:41,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:29:41,253 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:41,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash 899270537, now seen corresponding path program 1 times [2024-06-28 01:29:41,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:41,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319164401] [2024-06-28 01:29:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:41,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:42,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:42,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319164401] [2024-06-28 01:29:42,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319164401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:42,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:42,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:29:42,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193714950] [2024-06-28 01:29:42,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:42,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:29:42,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:42,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:29:42,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:29:42,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-28 01:29:42,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:42,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:42,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-28 01:29:42,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:42,794 INFO L124 PetriNetUnfolderBase]: 3676/5500 cut-off events. [2024-06-28 01:29:42,794 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2024-06-28 01:29:42,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12175 conditions, 5500 events. 3676/5500 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 31515 event pairs, 1374 based on Foata normal form. 6/5278 useless extension candidates. Maximal degree in co-relation 12163. Up to 5240 conditions per place. [2024-06-28 01:29:42,866 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 53 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-28 01:29:42,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 321 flow [2024-06-28 01:29:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:29:42,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:29:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-28 01:29:42,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6648936170212766 [2024-06-28 01:29:42,869 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 125 transitions. [2024-06-28 01:29:42,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 321 flow [2024-06-28 01:29:42,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:29:42,872 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 175 flow [2024-06-28 01:29:42,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 01:29:42,873 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-28 01:29:42,873 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 175 flow [2024-06-28 01:29:42,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:42,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:42,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:42,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:29:42,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:42,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:42,875 INFO L85 PathProgramCache]: Analyzing trace with hash 2095959179, now seen corresponding path program 1 times [2024-06-28 01:29:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600590430] [2024-06-28 01:29:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:42,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:42,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600590430] [2024-06-28 01:29:42,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600590430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:42,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:42,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:29:42,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424096974] [2024-06-28 01:29:42,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:42,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:29:42,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:42,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:29:42,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:29:42,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-06-28 01:29:42,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 01:29:42,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:42,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-06-28 01:29:42,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:43,200 INFO L124 PetriNetUnfolderBase]: 833/1766 cut-off events. [2024-06-28 01:29:43,200 INFO L125 PetriNetUnfolderBase]: For 449/521 co-relation queries the response was YES. [2024-06-28 01:29:43,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3605 conditions, 1766 events. 833/1766 cut-off events. For 449/521 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12354 event pairs, 207 based on Foata normal form. 7/1653 useless extension candidates. Maximal degree in co-relation 3591. Up to 1044 conditions per place. [2024-06-28 01:29:43,256 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 30 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-06-28 01:29:43,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 250 flow [2024-06-28 01:29:43,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:29:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:29:43,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-28 01:29:43,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2024-06-28 01:29:43,261 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 175 flow. Second operand 3 states and 108 transitions. [2024-06-28 01:29:43,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 250 flow [2024-06-28 01:29:43,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 236 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:29:43,264 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 150 flow [2024-06-28 01:29:43,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-28 01:29:43,266 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2024-06-28 01:29:43,266 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 150 flow [2024-06-28 01:29:43,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 01:29:43,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:43,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:43,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:29:43,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:43,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:43,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1463385782, now seen corresponding path program 1 times [2024-06-28 01:29:43,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:43,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385807991] [2024-06-28 01:29:43,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:43,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:44,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:44,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385807991] [2024-06-28 01:29:44,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385807991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:44,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:44,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:29:44,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289153518] [2024-06-28 01:29:44,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:44,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:29:44,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:29:44,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:29:44,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-28 01:29:44,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:44,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:44,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-28 01:29:44,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:45,539 INFO L124 PetriNetUnfolderBase]: 3114/5056 cut-off events. [2024-06-28 01:29:45,539 INFO L125 PetriNetUnfolderBase]: For 2498/2498 co-relation queries the response was YES. [2024-06-28 01:29:45,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11626 conditions, 5056 events. 3114/5056 cut-off events. For 2498/2498 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 30844 event pairs, 1149 based on Foata normal form. 6/4918 useless extension candidates. Maximal degree in co-relation 11612. Up to 4396 conditions per place. [2024-06-28 01:29:45,566 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 65 selfloop transitions, 12 changer transitions 5/94 dead transitions. [2024-06-28 01:29:45,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 94 transitions, 432 flow [2024-06-28 01:29:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:29:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:29:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-28 01:29:45,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6205673758865248 [2024-06-28 01:29:45,569 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 150 flow. Second operand 6 states and 175 transitions. [2024-06-28 01:29:45,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 94 transitions, 432 flow [2024-06-28 01:29:45,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 94 transitions, 420 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:29:45,573 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 197 flow [2024-06-28 01:29:45,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-06-28 01:29:45,575 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-06-28 01:29:45,575 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 197 flow [2024-06-28 01:29:45,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:45,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:45,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:45,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:29:45,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:45,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash -123863746, now seen corresponding path program 1 times [2024-06-28 01:29:45,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:45,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35437446] [2024-06-28 01:29:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:45,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:46,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:46,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:46,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35437446] [2024-06-28 01:29:46,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35437446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:46,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:46,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:29:46,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764027178] [2024-06-28 01:29:46,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:46,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:29:46,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:46,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:29:46,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:29:46,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:29:46,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 197 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:46,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:46,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:29:46,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:46,990 INFO L124 PetriNetUnfolderBase]: 2591/4502 cut-off events. [2024-06-28 01:29:46,991 INFO L125 PetriNetUnfolderBase]: For 3280/3280 co-relation queries the response was YES. [2024-06-28 01:29:46,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10781 conditions, 4502 events. 2591/4502 cut-off events. For 3280/3280 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 28997 event pairs, 1196 based on Foata normal form. 2/4323 useless extension candidates. Maximal degree in co-relation 10764. Up to 3742 conditions per place. [2024-06-28 01:29:47,022 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 55 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-06-28 01:29:47,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 402 flow [2024-06-28 01:29:47,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:29:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:29:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 01:29:47,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:29:47,024 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 197 flow. Second operand 5 states and 125 transitions. [2024-06-28 01:29:47,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 402 flow [2024-06-28 01:29:47,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 369 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:47,033 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 246 flow [2024-06-28 01:29:47,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-28 01:29:47,035 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-06-28 01:29:47,037 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 246 flow [2024-06-28 01:29:47,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:47,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:47,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:47,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:29:47,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:47,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash 455191939, now seen corresponding path program 1 times [2024-06-28 01:29:47,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:47,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440722895] [2024-06-28 01:29:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:47,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:47,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440722895] [2024-06-28 01:29:47,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440722895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:47,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:47,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:29:47,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889050893] [2024-06-28 01:29:47,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:47,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:29:47,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:47,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:29:47,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:29:47,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:47,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:47,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:47,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:47,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:48,597 INFO L124 PetriNetUnfolderBase]: 3143/5273 cut-off events. [2024-06-28 01:29:48,597 INFO L125 PetriNetUnfolderBase]: For 5576/5576 co-relation queries the response was YES. [2024-06-28 01:29:48,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13645 conditions, 5273 events. 3143/5273 cut-off events. For 5576/5576 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 33482 event pairs, 1417 based on Foata normal form. 3/5126 useless extension candidates. Maximal degree in co-relation 13625. Up to 4449 conditions per place. [2024-06-28 01:29:48,630 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 68 selfloop transitions, 19 changer transitions 0/97 dead transitions. [2024-06-28 01:29:48,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 556 flow [2024-06-28 01:29:48,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:29:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:29:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 01:29:48,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354609929078015 [2024-06-28 01:29:48,632 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 246 flow. Second operand 6 states and 151 transitions. [2024-06-28 01:29:48,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 556 flow [2024-06-28 01:29:48,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 539 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:29:48,640 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 362 flow [2024-06-28 01:29:48,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-06-28 01:29:48,642 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-28 01:29:48,642 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 362 flow [2024-06-28 01:29:48,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:48,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:48,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:48,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:29:48,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:48,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:48,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1220296413, now seen corresponding path program 1 times [2024-06-28 01:29:48,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:48,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514088203] [2024-06-28 01:29:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:48,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:49,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:49,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514088203] [2024-06-28 01:29:49,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514088203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:49,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:49,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:29:49,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197777673] [2024-06-28 01:29:49,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:49,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:29:49,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:49,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:29:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:29:49,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:49,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:49,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:49,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:49,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:50,368 INFO L124 PetriNetUnfolderBase]: 3411/5676 cut-off events. [2024-06-28 01:29:50,369 INFO L125 PetriNetUnfolderBase]: For 10206/10216 co-relation queries the response was YES. [2024-06-28 01:29:50,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16571 conditions, 5676 events. 3411/5676 cut-off events. For 10206/10216 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 36047 event pairs, 1466 based on Foata normal form. 4/5501 useless extension candidates. Maximal degree in co-relation 16547. Up to 4826 conditions per place. [2024-06-28 01:29:50,410 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 78 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-06-28 01:29:50,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 104 transitions, 657 flow [2024-06-28 01:29:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:29:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:29:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:29:50,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 01:29:50,412 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 362 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:29:50,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 104 transitions, 657 flow [2024-06-28 01:29:50,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 643 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 01:29:50,422 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 444 flow [2024-06-28 01:29:50,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2024-06-28 01:29:50,424 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2024-06-28 01:29:50,424 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 444 flow [2024-06-28 01:29:50,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:50,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:50,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:50,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:29:50,425 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:50,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:50,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1226040093, now seen corresponding path program 2 times [2024-06-28 01:29:50,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:50,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180445993] [2024-06-28 01:29:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:50,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:51,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:51,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180445993] [2024-06-28 01:29:51,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180445993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:51,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:51,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:29:51,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136731479] [2024-06-28 01:29:51,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:51,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:29:51,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:51,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:29:51,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:29:51,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:51,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 444 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:51,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:51,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:51,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:51,994 INFO L124 PetriNetUnfolderBase]: 3407/5752 cut-off events. [2024-06-28 01:29:51,994 INFO L125 PetriNetUnfolderBase]: For 13877/13899 co-relation queries the response was YES. [2024-06-28 01:29:52,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17860 conditions, 5752 events. 3407/5752 cut-off events. For 13877/13899 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 36844 event pairs, 1405 based on Foata normal form. 12/5558 useless extension candidates. Maximal degree in co-relation 17832. Up to 4771 conditions per place. [2024-06-28 01:29:52,039 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 76 selfloop transitions, 18 changer transitions 0/107 dead transitions. [2024-06-28 01:29:52,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 738 flow [2024-06-28 01:29:52,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:29:52,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:29:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 01:29:52,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-28 01:29:52,041 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 444 flow. Second operand 6 states and 149 transitions. [2024-06-28 01:29:52,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 738 flow [2024-06-28 01:29:52,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 701 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:52,111 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 485 flow [2024-06-28 01:29:52,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-06-28 01:29:52,112 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2024-06-28 01:29:52,112 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 485 flow [2024-06-28 01:29:52,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:52,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:52,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:52,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:29:52,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:52,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:52,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1226049021, now seen corresponding path program 1 times [2024-06-28 01:29:52,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:52,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461939616] [2024-06-28 01:29:52,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:52,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:53,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:53,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461939616] [2024-06-28 01:29:53,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461939616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:53,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:53,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:53,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655057694] [2024-06-28 01:29:53,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:53,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:53,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:53,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:53,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:53,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:53,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 485 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:53,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:53,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:53,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:54,071 INFO L124 PetriNetUnfolderBase]: 3231/5462 cut-off events. [2024-06-28 01:29:54,072 INFO L125 PetriNetUnfolderBase]: For 16287/16287 co-relation queries the response was YES. [2024-06-28 01:29:54,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17906 conditions, 5462 events. 3231/5462 cut-off events. For 16287/16287 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 34740 event pairs, 1288 based on Foata normal form. 3/5310 useless extension candidates. Maximal degree in co-relation 17877. Up to 4515 conditions per place. [2024-06-28 01:29:54,114 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 88 selfloop transitions, 34 changer transitions 0/132 dead transitions. [2024-06-28 01:29:54,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 983 flow [2024-06-28 01:29:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-28 01:29:54,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-06-28 01:29:54,119 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 485 flow. Second operand 7 states and 177 transitions. [2024-06-28 01:29:54,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 983 flow [2024-06-28 01:29:54,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 132 transitions, 929 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:54,133 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 673 flow [2024-06-28 01:29:54,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=673, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2024-06-28 01:29:54,135 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-06-28 01:29:54,135 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 673 flow [2024-06-28 01:29:54,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:54,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:54,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:54,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:29:54,136 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:54,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:54,136 INFO L85 PathProgramCache]: Analyzing trace with hash -825637209, now seen corresponding path program 1 times [2024-06-28 01:29:54,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:54,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191006435] [2024-06-28 01:29:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:54,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:55,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:55,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191006435] [2024-06-28 01:29:55,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191006435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:55,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:55,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:55,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281887850] [2024-06-28 01:29:55,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:55,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:55,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:55,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:55,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:55,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 673 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:55,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:55,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:55,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:56,222 INFO L124 PetriNetUnfolderBase]: 3459/5760 cut-off events. [2024-06-28 01:29:56,222 INFO L125 PetriNetUnfolderBase]: For 24174/24230 co-relation queries the response was YES. [2024-06-28 01:29:56,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20756 conditions, 5760 events. 3459/5760 cut-off events. For 24174/24230 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 36634 event pairs, 1392 based on Foata normal form. 12/5587 useless extension candidates. Maximal degree in co-relation 20723. Up to 4879 conditions per place. [2024-06-28 01:29:56,270 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 103 selfloop transitions, 17 changer transitions 0/137 dead transitions. [2024-06-28 01:29:56,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 137 transitions, 1065 flow [2024-06-28 01:29:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:29:56,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 01:29:56,272 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 673 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:29:56,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 137 transitions, 1065 flow [2024-06-28 01:29:56,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 137 transitions, 1015 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-28 01:29:56,297 INFO L231 Difference]: Finished difference. Result has 89 places, 102 transitions, 746 flow [2024-06-28 01:29:56,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=746, PETRI_PLACES=89, PETRI_TRANSITIONS=102} [2024-06-28 01:29:56,298 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2024-06-28 01:29:56,298 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 102 transitions, 746 flow [2024-06-28 01:29:56,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:56,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:56,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:56,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:29:56,299 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:56,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:56,300 INFO L85 PathProgramCache]: Analyzing trace with hash 448825842, now seen corresponding path program 1 times [2024-06-28 01:29:56,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:56,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013439265] [2024-06-28 01:29:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:56,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:57,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:57,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013439265] [2024-06-28 01:29:57,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013439265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:57,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:57,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130287268] [2024-06-28 01:29:57,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:57,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:57,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:57,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:57,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:57,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:29:57,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 102 transitions, 746 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 01:29:57,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:57,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:29:57,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:58,159 INFO L124 PetriNetUnfolderBase]: 3998/6539 cut-off events. [2024-06-28 01:29:58,159 INFO L125 PetriNetUnfolderBase]: For 30666/30672 co-relation queries the response was YES. [2024-06-28 01:29:58,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23937 conditions, 6539 events. 3998/6539 cut-off events. For 30666/30672 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 41062 event pairs, 1571 based on Foata normal form. 12/6358 useless extension candidates. Maximal degree in co-relation 23900. Up to 5492 conditions per place. [2024-06-28 01:29:58,203 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 120 selfloop transitions, 35 changer transitions 0/164 dead transitions. [2024-06-28 01:29:58,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 164 transitions, 1423 flow [2024-06-28 01:29:58,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:58,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:58,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:29:58,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:29:58,205 INFO L175 Difference]: Start difference. First operand has 89 places, 102 transitions, 746 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:29:58,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 164 transitions, 1423 flow [2024-06-28 01:29:58,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 164 transitions, 1350 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:58,232 INFO L231 Difference]: Finished difference. Result has 97 places, 126 transitions, 1015 flow [2024-06-28 01:29:58,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1015, PETRI_PLACES=97, PETRI_TRANSITIONS=126} [2024-06-28 01:29:58,233 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-06-28 01:29:58,233 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 126 transitions, 1015 flow [2024-06-28 01:29:58,233 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 01:29:58,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:58,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:58,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:29:58,234 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:58,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash 482670980, now seen corresponding path program 2 times [2024-06-28 01:29:58,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:58,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188867845] [2024-06-28 01:29:58,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:58,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:59,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:59,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188867845] [2024-06-28 01:29:59,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188867845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:59,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:59,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:59,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78157883] [2024-06-28 01:29:59,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:59,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:59,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:59,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:59,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:59,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:29:59,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 126 transitions, 1015 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 01:29:59,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:59,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:29:59,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:00,022 INFO L124 PetriNetUnfolderBase]: 4385/7130 cut-off events. [2024-06-28 01:30:00,022 INFO L125 PetriNetUnfolderBase]: For 46872/46872 co-relation queries the response was YES. [2024-06-28 01:30:00,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29928 conditions, 7130 events. 4385/7130 cut-off events. For 46872/46872 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 45200 event pairs, 2052 based on Foata normal form. 6/6933 useless extension candidates. Maximal degree in co-relation 29886. Up to 5852 conditions per place. [2024-06-28 01:30:00,077 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 135 selfloop transitions, 55 changer transitions 0/199 dead transitions. [2024-06-28 01:30:00,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 199 transitions, 1906 flow [2024-06-28 01:30:00,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:00,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:00,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:30:00,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:30:00,079 INFO L175 Difference]: Start difference. First operand has 97 places, 126 transitions, 1015 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:30:00,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 199 transitions, 1906 flow [2024-06-28 01:30:00,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 199 transitions, 1802 flow, removed 51 selfloop flow, removed 1 redundant places. [2024-06-28 01:30:00,154 INFO L231 Difference]: Finished difference. Result has 106 places, 154 transitions, 1387 flow [2024-06-28 01:30:00,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1387, PETRI_PLACES=106, PETRI_TRANSITIONS=154} [2024-06-28 01:30:00,156 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2024-06-28 01:30:00,156 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 154 transitions, 1387 flow [2024-06-28 01:30:00,156 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 01:30:00,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:00,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:00,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:30:00,157 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:00,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:00,157 INFO L85 PathProgramCache]: Analyzing trace with hash -647195102, now seen corresponding path program 3 times [2024-06-28 01:30:00,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:00,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476520635] [2024-06-28 01:30:00,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:00,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:01,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:01,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476520635] [2024-06-28 01:30:01,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476520635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:01,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:01,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:30:01,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737506053] [2024-06-28 01:30:01,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:01,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:30:01,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:01,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:30:01,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:30:01,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:01,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 154 transitions, 1387 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 01:30:01,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:01,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:01,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:02,093 INFO L124 PetriNetUnfolderBase]: 4592/7534 cut-off events. [2024-06-28 01:30:02,093 INFO L125 PetriNetUnfolderBase]: For 59786/59786 co-relation queries the response was YES. [2024-06-28 01:30:02,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33817 conditions, 7534 events. 4592/7534 cut-off events. For 59786/59786 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 48462 event pairs, 1938 based on Foata normal form. 6/7298 useless extension candidates. Maximal degree in co-relation 33770. Up to 5626 conditions per place. [2024-06-28 01:30:02,259 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 113 selfloop transitions, 83 changer transitions 0/205 dead transitions. [2024-06-28 01:30:02,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 205 transitions, 2183 flow [2024-06-28 01:30:02,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:02,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:02,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 01:30:02,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:30:02,261 INFO L175 Difference]: Start difference. First operand has 106 places, 154 transitions, 1387 flow. Second operand 8 states and 192 transitions. [2024-06-28 01:30:02,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 205 transitions, 2183 flow [2024-06-28 01:30:02,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 205 transitions, 2124 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 01:30:02,342 INFO L231 Difference]: Finished difference. Result has 113 places, 166 transitions, 1713 flow [2024-06-28 01:30:02,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1713, PETRI_PLACES=113, PETRI_TRANSITIONS=166} [2024-06-28 01:30:02,343 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 60 predicate places. [2024-06-28 01:30:02,343 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 166 transitions, 1713 flow [2024-06-28 01:30:02,343 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 01:30:02,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:02,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:02,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:30:02,344 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:02,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash -647462012, now seen corresponding path program 4 times [2024-06-28 01:30:02,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:02,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912979031] [2024-06-28 01:30:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:02,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:03,202 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 01:30:03,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:03,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912979031] [2024-06-28 01:30:03,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912979031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:03,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:03,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:30:03,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439291635] [2024-06-28 01:30:03,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:03,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:30:03,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:03,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:30:03,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:30:03,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:03,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 166 transitions, 1713 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 01:30:03,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:03,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:03,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:04,256 INFO L124 PetriNetUnfolderBase]: 4580/7520 cut-off events. [2024-06-28 01:30:04,257 INFO L125 PetriNetUnfolderBase]: For 69883/69883 co-relation queries the response was YES. [2024-06-28 01:30:04,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36106 conditions, 7520 events. 4580/7520 cut-off events. For 69883/69883 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 48362 event pairs, 2015 based on Foata normal form. 6/7285 useless extension candidates. Maximal degree in co-relation 36056. Up to 5620 conditions per place. [2024-06-28 01:30:04,320 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 123 selfloop transitions, 72 changer transitions 0/204 dead transitions. [2024-06-28 01:30:04,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 204 transitions, 2331 flow [2024-06-28 01:30:04,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:04,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:04,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:30:04,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-28 01:30:04,322 INFO L175 Difference]: Start difference. First operand has 113 places, 166 transitions, 1713 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:30:04,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 204 transitions, 2331 flow [2024-06-28 01:30:04,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 204 transitions, 2215 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-28 01:30:04,449 INFO L231 Difference]: Finished difference. Result has 118 places, 166 transitions, 1751 flow [2024-06-28 01:30:04,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1751, PETRI_PLACES=118, PETRI_TRANSITIONS=166} [2024-06-28 01:30:04,451 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2024-06-28 01:30:04,451 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 166 transitions, 1751 flow [2024-06-28 01:30:04,451 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 01:30:04,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:04,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:04,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:30:04,452 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:04,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash -647185182, now seen corresponding path program 1 times [2024-06-28 01:30:04,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:04,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103820145] [2024-06-28 01:30:04,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:04,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:05,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:05,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103820145] [2024-06-28 01:30:05,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103820145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:05,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:05,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:05,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880094944] [2024-06-28 01:30:05,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:05,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:05,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:05,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:05,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:05,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 166 transitions, 1751 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:05,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:05,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:05,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:06,651 INFO L124 PetriNetUnfolderBase]: 4098/6918 cut-off events. [2024-06-28 01:30:06,651 INFO L125 PetriNetUnfolderBase]: For 59332/59332 co-relation queries the response was YES. [2024-06-28 01:30:06,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32682 conditions, 6918 events. 4098/6918 cut-off events. For 59332/59332 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 45438 event pairs, 1918 based on Foata normal form. 6/6707 useless extension candidates. Maximal degree in co-relation 32630. Up to 5673 conditions per place. [2024-06-28 01:30:06,705 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 179 selfloop transitions, 27 changer transitions 0/216 dead transitions. [2024-06-28 01:30:06,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 216 transitions, 2445 flow [2024-06-28 01:30:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:06,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:30:06,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-28 01:30:06,708 INFO L175 Difference]: Start difference. First operand has 118 places, 166 transitions, 1751 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:30:06,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 216 transitions, 2445 flow [2024-06-28 01:30:06,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 216 transitions, 2206 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:06,781 INFO L231 Difference]: Finished difference. Result has 120 places, 173 transitions, 1657 flow [2024-06-28 01:30:06,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1512, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1657, PETRI_PLACES=120, PETRI_TRANSITIONS=173} [2024-06-28 01:30:06,782 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2024-06-28 01:30:06,782 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 173 transitions, 1657 flow [2024-06-28 01:30:06,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:06,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:06,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:06,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:30:06,783 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:06,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:06,783 INFO L85 PathProgramCache]: Analyzing trace with hash -919501432, now seen corresponding path program 1 times [2024-06-28 01:30:06,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:06,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894209224] [2024-06-28 01:30:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:06,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:07,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:07,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894209224] [2024-06-28 01:30:07,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894209224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:07,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:07,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:30:07,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489122193] [2024-06-28 01:30:07,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:07,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:30:07,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:07,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:30:07,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:30:07,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:07,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 173 transitions, 1657 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:07,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:07,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:07,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:08,451 INFO L124 PetriNetUnfolderBase]: 4095/6861 cut-off events. [2024-06-28 01:30:08,452 INFO L125 PetriNetUnfolderBase]: For 61255/61255 co-relation queries the response was YES. [2024-06-28 01:30:08,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32024 conditions, 6861 events. 4095/6861 cut-off events. For 61255/61255 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 44911 event pairs, 2009 based on Foata normal form. 1/6665 useless extension candidates. Maximal degree in co-relation 31971. Up to 5824 conditions per place. [2024-06-28 01:30:08,508 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 161 selfloop transitions, 15 changer transitions 0/186 dead transitions. [2024-06-28 01:30:08,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 186 transitions, 2045 flow [2024-06-28 01:30:08,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:30:08,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:30:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 01:30:08,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-28 01:30:08,510 INFO L175 Difference]: Start difference. First operand has 120 places, 173 transitions, 1657 flow. Second operand 5 states and 118 transitions. [2024-06-28 01:30:08,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 186 transitions, 2045 flow [2024-06-28 01:30:08,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 186 transitions, 1950 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:30:08,670 INFO L231 Difference]: Finished difference. Result has 120 places, 173 transitions, 1602 flow [2024-06-28 01:30:08,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1602, PETRI_PLACES=120, PETRI_TRANSITIONS=173} [2024-06-28 01:30:08,671 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2024-06-28 01:30:08,671 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 173 transitions, 1602 flow [2024-06-28 01:30:08,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:08,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:08,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:08,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:30:08,672 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:08,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:08,673 INFO L85 PathProgramCache]: Analyzing trace with hash -973182426, now seen corresponding path program 1 times [2024-06-28 01:30:08,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:08,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976583597] [2024-06-28 01:30:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:08,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:09,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:09,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976583597] [2024-06-28 01:30:09,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976583597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:09,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:09,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:09,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875188698] [2024-06-28 01:30:09,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:09,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:09,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:09,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:09,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:09,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 173 transitions, 1602 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 01:30:09,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:09,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:09,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:10,986 INFO L124 PetriNetUnfolderBase]: 4829/7866 cut-off events. [2024-06-28 01:30:10,986 INFO L125 PetriNetUnfolderBase]: For 71177/71183 co-relation queries the response was YES. [2024-06-28 01:30:11,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36647 conditions, 7866 events. 4829/7866 cut-off events. For 71177/71183 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 50587 event pairs, 1988 based on Foata normal form. 12/7647 useless extension candidates. Maximal degree in co-relation 36593. Up to 6596 conditions per place. [2024-06-28 01:30:11,041 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 184 selfloop transitions, 64 changer transitions 0/257 dead transitions. [2024-06-28 01:30:11,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 257 transitions, 2710 flow [2024-06-28 01:30:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2024-06-28 01:30:11,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170212765957447 [2024-06-28 01:30:11,042 INFO L175 Difference]: Start difference. First operand has 120 places, 173 transitions, 1602 flow. Second operand 10 states and 243 transitions. [2024-06-28 01:30:11,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 257 transitions, 2710 flow [2024-06-28 01:30:11,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 257 transitions, 2668 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:11,119 INFO L231 Difference]: Finished difference. Result has 130 places, 202 transitions, 2069 flow [2024-06-28 01:30:11,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2069, PETRI_PLACES=130, PETRI_TRANSITIONS=202} [2024-06-28 01:30:11,120 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-06-28 01:30:11,120 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 202 transitions, 2069 flow [2024-06-28 01:30:11,120 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 01:30:11,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:11,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:11,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:30:11,120 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:11,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1688218636, now seen corresponding path program 2 times [2024-06-28 01:30:11,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:11,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246799438] [2024-06-28 01:30:11,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:11,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:12,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:12,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246799438] [2024-06-28 01:30:12,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246799438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:12,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:12,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:12,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543844339] [2024-06-28 01:30:12,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:12,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:12,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:12,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:12,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 202 transitions, 2069 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 01:30:12,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:12,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:12,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:13,796 INFO L124 PetriNetUnfolderBase]: 5139/8275 cut-off events. [2024-06-28 01:30:13,796 INFO L125 PetriNetUnfolderBase]: For 91915/91921 co-relation queries the response was YES. [2024-06-28 01:30:13,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42438 conditions, 8275 events. 5139/8275 cut-off events. For 91915/91921 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 52811 event pairs, 1866 based on Foata normal form. 9/8056 useless extension candidates. Maximal degree in co-relation 42380. Up to 6912 conditions per place. [2024-06-28 01:30:13,862 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 209 selfloop transitions, 101 changer transitions 0/319 dead transitions. [2024-06-28 01:30:13,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 319 transitions, 3846 flow [2024-06-28 01:30:13,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:30:13,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390070921985816 [2024-06-28 01:30:13,863 INFO L175 Difference]: Start difference. First operand has 130 places, 202 transitions, 2069 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:30:13,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 319 transitions, 3846 flow [2024-06-28 01:30:13,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 319 transitions, 3530 flow, removed 140 selfloop flow, removed 3 redundant places. [2024-06-28 01:30:13,993 INFO L231 Difference]: Finished difference. Result has 139 places, 255 transitions, 2817 flow [2024-06-28 01:30:13,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2817, PETRI_PLACES=139, PETRI_TRANSITIONS=255} [2024-06-28 01:30:13,994 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 86 predicate places. [2024-06-28 01:30:13,994 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 255 transitions, 2817 flow [2024-06-28 01:30:13,994 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 01:30:13,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:13,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:13,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:30:13,995 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:13,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:13,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1684463978, now seen corresponding path program 1 times [2024-06-28 01:30:13,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:13,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197448943] [2024-06-28 01:30:13,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:13,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:15,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:15,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197448943] [2024-06-28 01:30:15,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197448943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:15,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:15,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:15,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404311084] [2024-06-28 01:30:15,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:15,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:15,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:15,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:15,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:15,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:15,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 255 transitions, 2817 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 01:30:15,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:15,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:15,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:16,304 INFO L124 PetriNetUnfolderBase]: 5206/8379 cut-off events. [2024-06-28 01:30:16,304 INFO L125 PetriNetUnfolderBase]: For 106313/106319 co-relation queries the response was YES. [2024-06-28 01:30:16,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45315 conditions, 8379 events. 5206/8379 cut-off events. For 106313/106319 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 53658 event pairs, 2048 based on Foata normal form. 9/8166 useless extension candidates. Maximal degree in co-relation 45252. Up to 7087 conditions per place. [2024-06-28 01:30:16,377 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 262 selfloop transitions, 68 changer transitions 0/339 dead transitions. [2024-06-28 01:30:16,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 339 transitions, 4221 flow [2024-06-28 01:30:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:30:16,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-28 01:30:16,379 INFO L175 Difference]: Start difference. First operand has 139 places, 255 transitions, 2817 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:30:16,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 339 transitions, 4221 flow [2024-06-28 01:30:16,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 339 transitions, 4073 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-28 01:30:16,528 INFO L231 Difference]: Finished difference. Result has 148 places, 284 transitions, 3299 flow [2024-06-28 01:30:16,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3299, PETRI_PLACES=148, PETRI_TRANSITIONS=284} [2024-06-28 01:30:16,529 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 95 predicate places. [2024-06-28 01:30:16,529 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 284 transitions, 3299 flow [2024-06-28 01:30:16,529 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 01:30:16,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:16,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:16,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:30:16,530 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:16,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:16,530 INFO L85 PathProgramCache]: Analyzing trace with hash 175051066, now seen corresponding path program 3 times [2024-06-28 01:30:16,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:16,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037709458] [2024-06-28 01:30:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:16,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:17,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:17,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037709458] [2024-06-28 01:30:17,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037709458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:17,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:17,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:17,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136909828] [2024-06-28 01:30:17,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:17,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:17,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:17,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:17,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:17,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:17,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 284 transitions, 3299 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 01:30:17,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:17,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:17,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:19,126 INFO L124 PetriNetUnfolderBase]: 5240/8480 cut-off events. [2024-06-28 01:30:19,127 INFO L125 PetriNetUnfolderBase]: For 120824/120830 co-relation queries the response was YES. [2024-06-28 01:30:19,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47663 conditions, 8480 events. 5240/8480 cut-off events. For 120824/120830 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 54965 event pairs, 1936 based on Foata normal form. 9/8251 useless extension candidates. Maximal degree in co-relation 47596. Up to 6889 conditions per place. [2024-06-28 01:30:19,195 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 215 selfloop transitions, 120 changer transitions 0/344 dead transitions. [2024-06-28 01:30:19,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 344 transitions, 4513 flow [2024-06-28 01:30:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:19,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:30:19,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-28 01:30:19,197 INFO L175 Difference]: Start difference. First operand has 148 places, 284 transitions, 3299 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:30:19,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 344 transitions, 4513 flow [2024-06-28 01:30:19,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 344 transitions, 4377 flow, removed 61 selfloop flow, removed 2 redundant places. [2024-06-28 01:30:19,364 INFO L231 Difference]: Finished difference. Result has 155 places, 297 transitions, 3711 flow [2024-06-28 01:30:19,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3711, PETRI_PLACES=155, PETRI_TRANSITIONS=297} [2024-06-28 01:30:19,365 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 102 predicate places. [2024-06-28 01:30:19,365 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 297 transitions, 3711 flow [2024-06-28 01:30:19,365 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 01:30:19,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:19,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:19,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:30:19,365 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:19,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:19,366 INFO L85 PathProgramCache]: Analyzing trace with hash 359555636, now seen corresponding path program 2 times [2024-06-28 01:30:19,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:19,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857244796] [2024-06-28 01:30:19,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:19,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:20,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:20,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857244796] [2024-06-28 01:30:20,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857244796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:20,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:20,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:20,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594070898] [2024-06-28 01:30:20,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:20,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:20,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:20,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:20,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:20,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:20,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 297 transitions, 3711 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 01:30:20,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:20,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:20,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:21,845 INFO L124 PetriNetUnfolderBase]: 5334/8519 cut-off events. [2024-06-28 01:30:21,845 INFO L125 PetriNetUnfolderBase]: For 138053/138059 co-relation queries the response was YES. [2024-06-28 01:30:21,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50177 conditions, 8519 events. 5334/8519 cut-off events. For 138053/138059 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 54327 event pairs, 1984 based on Foata normal form. 12/8319 useless extension candidates. Maximal degree in co-relation 50107. Up to 6858 conditions per place. [2024-06-28 01:30:21,919 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 258 selfloop transitions, 85 changer transitions 0/352 dead transitions. [2024-06-28 01:30:21,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 352 transitions, 4817 flow [2024-06-28 01:30:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:21,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:21,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:30:21,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:30:21,921 INFO L175 Difference]: Start difference. First operand has 155 places, 297 transitions, 3711 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:30:21,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 352 transitions, 4817 flow [2024-06-28 01:30:22,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 352 transitions, 4615 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:22,181 INFO L231 Difference]: Finished difference. Result has 159 places, 306 transitions, 3839 flow [2024-06-28 01:30:22,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3839, PETRI_PLACES=159, PETRI_TRANSITIONS=306} [2024-06-28 01:30:22,181 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 106 predicate places. [2024-06-28 01:30:22,182 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 306 transitions, 3839 flow [2024-06-28 01:30:22,182 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 01:30:22,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:22,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:22,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:30:22,182 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:22,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:22,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1403514908, now seen corresponding path program 3 times [2024-06-28 01:30:22,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:22,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511816838] [2024-06-28 01:30:22,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:22,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:23,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:23,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511816838] [2024-06-28 01:30:23,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511816838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:23,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:23,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:23,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953088630] [2024-06-28 01:30:23,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:23,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:23,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:23,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:23,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:23,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:23,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 306 transitions, 3839 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 01:30:23,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:23,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:23,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:24,783 INFO L124 PetriNetUnfolderBase]: 5418/8741 cut-off events. [2024-06-28 01:30:24,783 INFO L125 PetriNetUnfolderBase]: For 145463/145475 co-relation queries the response was YES. [2024-06-28 01:30:24,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52305 conditions, 8741 events. 5418/8741 cut-off events. For 145463/145475 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 56427 event pairs, 1930 based on Foata normal form. 18/8510 useless extension candidates. Maximal degree in co-relation 52234. Up to 6721 conditions per place. [2024-06-28 01:30:24,861 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 267 selfloop transitions, 83 changer transitions 0/359 dead transitions. [2024-06-28 01:30:24,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 359 transitions, 5013 flow [2024-06-28 01:30:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:30:24,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-28 01:30:24,862 INFO L175 Difference]: Start difference. First operand has 159 places, 306 transitions, 3839 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:30:24,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 359 transitions, 5013 flow [2024-06-28 01:30:25,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 359 transitions, 4767 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:25,095 INFO L231 Difference]: Finished difference. Result has 161 places, 311 transitions, 3883 flow [2024-06-28 01:30:25,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3593, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3883, PETRI_PLACES=161, PETRI_TRANSITIONS=311} [2024-06-28 01:30:25,095 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 108 predicate places. [2024-06-28 01:30:25,096 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 311 transitions, 3883 flow [2024-06-28 01:30:25,096 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 01:30:25,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:25,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:25,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:30:25,097 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:25,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:25,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1173714914, now seen corresponding path program 4 times [2024-06-28 01:30:25,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:25,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849393790] [2024-06-28 01:30:25,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:25,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:25,987 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 01:30:25,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:25,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849393790] [2024-06-28 01:30:25,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849393790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:25,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:25,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:25,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687058066] [2024-06-28 01:30:25,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:25,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:25,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:25,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:25,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:26,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:26,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 311 transitions, 3883 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 01:30:26,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:26,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:26,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:27,560 INFO L124 PetriNetUnfolderBase]: 5475/8572 cut-off events. [2024-06-28 01:30:27,561 INFO L125 PetriNetUnfolderBase]: For 156803/156815 co-relation queries the response was YES. [2024-06-28 01:30:27,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53879 conditions, 8572 events. 5475/8572 cut-off events. For 156803/156815 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 53142 event pairs, 1743 based on Foata normal form. 15/8425 useless extension candidates. Maximal degree in co-relation 53807. Up to 7161 conditions per place. [2024-06-28 01:30:27,651 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 277 selfloop transitions, 104 changer transitions 0/390 dead transitions. [2024-06-28 01:30:27,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 390 transitions, 5497 flow [2024-06-28 01:30:27,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:30:27,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-28 01:30:27,652 INFO L175 Difference]: Start difference. First operand has 161 places, 311 transitions, 3883 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:30:27,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 390 transitions, 5497 flow [2024-06-28 01:30:27,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 390 transitions, 5222 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:27,897 INFO L231 Difference]: Finished difference. Result has 166 places, 345 transitions, 4541 flow [2024-06-28 01:30:27,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3633, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4541, PETRI_PLACES=166, PETRI_TRANSITIONS=345} [2024-06-28 01:30:27,898 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 113 predicate places. [2024-06-28 01:30:27,898 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 345 transitions, 4541 flow [2024-06-28 01:30:27,898 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 01:30:27,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:27,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:27,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:30:27,899 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:27,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:27,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1412085788, now seen corresponding path program 5 times [2024-06-28 01:30:27,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:27,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602597879] [2024-06-28 01:30:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:27,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:28,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:28,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602597879] [2024-06-28 01:30:28,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602597879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:28,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:28,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:28,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253827640] [2024-06-28 01:30:28,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:28,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:28,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:28,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:28,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:28,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 345 transitions, 4541 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 01:30:28,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:28,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:28,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:30,348 INFO L124 PetriNetUnfolderBase]: 5634/8893 cut-off events. [2024-06-28 01:30:30,349 INFO L125 PetriNetUnfolderBase]: For 169899/169899 co-relation queries the response was YES. [2024-06-28 01:30:30,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57661 conditions, 8893 events. 5634/8893 cut-off events. For 169899/169899 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 55745 event pairs, 1391 based on Foata normal form. 6/8681 useless extension candidates. Maximal degree in co-relation 57585. Up to 6301 conditions per place. [2024-06-28 01:30:30,441 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 222 selfloop transitions, 200 changer transitions 0/431 dead transitions. [2024-06-28 01:30:30,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 431 transitions, 6400 flow [2024-06-28 01:30:30,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:30,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:30,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 01:30:30,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-28 01:30:30,442 INFO L175 Difference]: Start difference. First operand has 166 places, 345 transitions, 4541 flow. Second operand 9 states and 230 transitions. [2024-06-28 01:30:30,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 431 transitions, 6400 flow [2024-06-28 01:30:30,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 431 transitions, 6041 flow, removed 162 selfloop flow, removed 2 redundant places. [2024-06-28 01:30:30,986 INFO L231 Difference]: Finished difference. Result has 175 places, 374 transitions, 5361 flow [2024-06-28 01:30:30,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4280, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5361, PETRI_PLACES=175, PETRI_TRANSITIONS=374} [2024-06-28 01:30:30,987 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 122 predicate places. [2024-06-28 01:30:30,987 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 374 transitions, 5361 flow [2024-06-28 01:30:30,987 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 01:30:30,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:30,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:30,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:30:30,988 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:30,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:30,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1560228715, now seen corresponding path program 1 times [2024-06-28 01:30:30,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:30,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644852336] [2024-06-28 01:30:30,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:30,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:31,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644852336] [2024-06-28 01:30:31,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644852336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:31,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:31,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:30:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308858545] [2024-06-28 01:30:31,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:31,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:30:31,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:31,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:30:31,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:30:31,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:31,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 374 transitions, 5361 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:31,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:31,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:31,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:33,530 INFO L124 PetriNetUnfolderBase]: 5105/8133 cut-off events. [2024-06-28 01:30:33,531 INFO L125 PetriNetUnfolderBase]: For 163338/163338 co-relation queries the response was YES. [2024-06-28 01:30:33,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56483 conditions, 8133 events. 5105/8133 cut-off events. For 163338/163338 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 51902 event pairs, 1974 based on Foata normal form. 2/7988 useless extension candidates. Maximal degree in co-relation 56403. Up to 7194 conditions per place. [2024-06-28 01:30:33,609 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 368 selfloop transitions, 18 changer transitions 0/396 dead transitions. [2024-06-28 01:30:33,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 396 transitions, 6235 flow [2024-06-28 01:30:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:30:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:30:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:30:33,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-28 01:30:33,611 INFO L175 Difference]: Start difference. First operand has 175 places, 374 transitions, 5361 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:30:33,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 396 transitions, 6235 flow [2024-06-28 01:30:33,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 396 transitions, 6058 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-28 01:30:33,918 INFO L231 Difference]: Finished difference. Result has 178 places, 377 transitions, 5261 flow [2024-06-28 01:30:33,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5184, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5261, PETRI_PLACES=178, PETRI_TRANSITIONS=377} [2024-06-28 01:30:33,919 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 125 predicate places. [2024-06-28 01:30:33,919 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 377 transitions, 5261 flow [2024-06-28 01:30:33,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:33,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:33,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:33,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:30:33,920 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:33,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1908838292, now seen corresponding path program 1 times [2024-06-28 01:30:33,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:33,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306086681] [2024-06-28 01:30:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:33,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:35,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:35,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306086681] [2024-06-28 01:30:35,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306086681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:35,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:35,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:35,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249627650] [2024-06-28 01:30:35,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:35,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:35,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:35,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:35,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 377 transitions, 5261 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:35,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:35,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:35,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:36,896 INFO L124 PetriNetUnfolderBase]: 5532/8801 cut-off events. [2024-06-28 01:30:36,896 INFO L125 PetriNetUnfolderBase]: For 187553/187919 co-relation queries the response was YES. [2024-06-28 01:30:36,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59777 conditions, 8801 events. 5532/8801 cut-off events. For 187553/187919 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 56842 event pairs, 1742 based on Foata normal form. 76/8618 useless extension candidates. Maximal degree in co-relation 59695. Up to 7300 conditions per place. [2024-06-28 01:30:36,976 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 314 selfloop transitions, 40 changer transitions 0/432 dead transitions. [2024-06-28 01:30:36,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 432 transitions, 6264 flow [2024-06-28 01:30:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:30:36,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-28 01:30:36,977 INFO L175 Difference]: Start difference. First operand has 178 places, 377 transitions, 5261 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:30:36,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 432 transitions, 6264 flow [2024-06-28 01:30:37,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 432 transitions, 6213 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:37,244 INFO L231 Difference]: Finished difference. Result has 185 places, 385 transitions, 5445 flow [2024-06-28 01:30:37,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5210, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5445, PETRI_PLACES=185, PETRI_TRANSITIONS=385} [2024-06-28 01:30:37,245 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 132 predicate places. [2024-06-28 01:30:37,245 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 385 transitions, 5445 flow [2024-06-28 01:30:37,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:37,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:37,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:37,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:30:37,246 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:37,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:37,246 INFO L85 PathProgramCache]: Analyzing trace with hash -103889286, now seen corresponding path program 2 times [2024-06-28 01:30:37,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:37,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378337013] [2024-06-28 01:30:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:37,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:38,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:38,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:38,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378337013] [2024-06-28 01:30:38,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378337013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:38,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:38,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:38,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813249017] [2024-06-28 01:30:38,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:38,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:38,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:38,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:38,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:38,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:38,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 385 transitions, 5445 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:38,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:38,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:38,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:40,143 INFO L124 PetriNetUnfolderBase]: 5508/8691 cut-off events. [2024-06-28 01:30:40,143 INFO L125 PetriNetUnfolderBase]: For 199145/199420 co-relation queries the response was YES. [2024-06-28 01:30:40,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61392 conditions, 8691 events. 5508/8691 cut-off events. For 199145/199420 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 55843 event pairs, 1725 based on Foata normal form. 88/8577 useless extension candidates. Maximal degree in co-relation 61307. Up to 7236 conditions per place. [2024-06-28 01:30:40,222 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 306 selfloop transitions, 63 changer transitions 0/447 dead transitions. [2024-06-28 01:30:40,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 447 transitions, 6629 flow [2024-06-28 01:30:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:40,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:40,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 01:30:40,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:30:40,223 INFO L175 Difference]: Start difference. First operand has 185 places, 385 transitions, 5445 flow. Second operand 9 states and 225 transitions. [2024-06-28 01:30:40,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 447 transitions, 6629 flow [2024-06-28 01:30:40,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 447 transitions, 6506 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:40,642 INFO L231 Difference]: Finished difference. Result has 191 places, 396 transitions, 5725 flow [2024-06-28 01:30:40,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5322, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5725, PETRI_PLACES=191, PETRI_TRANSITIONS=396} [2024-06-28 01:30:40,642 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 138 predicate places. [2024-06-28 01:30:40,643 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 396 transitions, 5725 flow [2024-06-28 01:30:40,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:40,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:40,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:40,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:30:40,643 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:40,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:40,643 INFO L85 PathProgramCache]: Analyzing trace with hash 816787356, now seen corresponding path program 3 times [2024-06-28 01:30:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824161276] [2024-06-28 01:30:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:40,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:41,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:41,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824161276] [2024-06-28 01:30:41,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824161276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:41,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:41,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:41,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393222581] [2024-06-28 01:30:41,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:41,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:41,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:41,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:41,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:41,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:41,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 396 transitions, 5725 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:41,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:41,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:41,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:43,435 INFO L124 PetriNetUnfolderBase]: 5652/8958 cut-off events. [2024-06-28 01:30:43,435 INFO L125 PetriNetUnfolderBase]: For 213908/214144 co-relation queries the response was YES. [2024-06-28 01:30:43,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62953 conditions, 8958 events. 5652/8958 cut-off events. For 213908/214144 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 58052 event pairs, 1449 based on Foata normal form. 76/8815 useless extension candidates. Maximal degree in co-relation 62866. Up to 7326 conditions per place. [2024-06-28 01:30:43,526 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 319 selfloop transitions, 65 changer transitions 0/462 dead transitions. [2024-06-28 01:30:43,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 462 transitions, 6858 flow [2024-06-28 01:30:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:43,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:30:43,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-28 01:30:43,528 INFO L175 Difference]: Start difference. First operand has 191 places, 396 transitions, 5725 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:30:43,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 462 transitions, 6858 flow [2024-06-28 01:30:43,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 462 transitions, 6670 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:43,956 INFO L231 Difference]: Finished difference. Result has 198 places, 411 transitions, 5901 flow [2024-06-28 01:30:43,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5537, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5901, PETRI_PLACES=198, PETRI_TRANSITIONS=411} [2024-06-28 01:30:43,957 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-06-28 01:30:43,957 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 411 transitions, 5901 flow [2024-06-28 01:30:43,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:43,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:43,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:43,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:30:43,958 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:43,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash -798062036, now seen corresponding path program 4 times [2024-06-28 01:30:43,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:43,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317008132] [2024-06-28 01:30:43,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:43,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:44,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:44,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317008132] [2024-06-28 01:30:44,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317008132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:44,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:44,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:44,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638649676] [2024-06-28 01:30:44,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:44,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:44,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:44,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:44,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:44,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:44,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 411 transitions, 5901 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:44,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:44,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:44,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:46,834 INFO L124 PetriNetUnfolderBase]: 5798/9153 cut-off events. [2024-06-28 01:30:46,834 INFO L125 PetriNetUnfolderBase]: For 233214/233391 co-relation queries the response was YES. [2024-06-28 01:30:46,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66128 conditions, 9153 events. 5798/9153 cut-off events. For 233214/233391 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 59042 event pairs, 1592 based on Foata normal form. 67/9024 useless extension candidates. Maximal degree in co-relation 66037. Up to 7599 conditions per place. [2024-06-28 01:30:46,941 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 345 selfloop transitions, 59 changer transitions 0/482 dead transitions. [2024-06-28 01:30:46,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 482 transitions, 7289 flow [2024-06-28 01:30:46,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:30:46,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-28 01:30:46,943 INFO L175 Difference]: Start difference. First operand has 198 places, 411 transitions, 5901 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:30:46,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 482 transitions, 7289 flow [2024-06-28 01:30:47,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 482 transitions, 7014 flow, removed 106 selfloop flow, removed 5 redundant places. [2024-06-28 01:30:47,473 INFO L231 Difference]: Finished difference. Result has 204 places, 437 transitions, 6221 flow [2024-06-28 01:30:47,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5733, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6221, PETRI_PLACES=204, PETRI_TRANSITIONS=437} [2024-06-28 01:30:47,474 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 151 predicate places. [2024-06-28 01:30:47,474 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 437 transitions, 6221 flow [2024-06-28 01:30:47,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:47,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:47,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:47,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:30:47,475 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:47,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash -795175316, now seen corresponding path program 5 times [2024-06-28 01:30:47,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:47,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849931680] [2024-06-28 01:30:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:47,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:48,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:48,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849931680] [2024-06-28 01:30:48,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849931680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:48,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:48,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:48,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833866941] [2024-06-28 01:30:48,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:48,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:48,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:48,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:48,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:48,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:48,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 437 transitions, 6221 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:48,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:48,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:48,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:50,579 INFO L124 PetriNetUnfolderBase]: 5865/9250 cut-off events. [2024-06-28 01:30:50,579 INFO L125 PetriNetUnfolderBase]: For 240687/240866 co-relation queries the response was YES. [2024-06-28 01:30:50,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67269 conditions, 9250 events. 5865/9250 cut-off events. For 240687/240866 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 59716 event pairs, 1624 based on Foata normal form. 67/9122 useless extension candidates. Maximal degree in co-relation 67175. Up to 7789 conditions per place. [2024-06-28 01:30:50,705 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 360 selfloop transitions, 49 changer transitions 0/487 dead transitions. [2024-06-28 01:30:50,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 487 transitions, 7348 flow [2024-06-28 01:30:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:30:50,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-28 01:30:50,707 INFO L175 Difference]: Start difference. First operand has 204 places, 437 transitions, 6221 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:30:50,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 487 transitions, 7348 flow [2024-06-28 01:30:51,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 487 transitions, 7240 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-28 01:30:51,261 INFO L231 Difference]: Finished difference. Result has 212 places, 443 transitions, 6344 flow [2024-06-28 01:30:51,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6113, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6344, PETRI_PLACES=212, PETRI_TRANSITIONS=443} [2024-06-28 01:30:51,262 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 159 predicate places. [2024-06-28 01:30:51,262 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 443 transitions, 6344 flow [2024-06-28 01:30:51,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:51,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:51,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:51,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:30:51,263 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:51,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:51,263 INFO L85 PathProgramCache]: Analyzing trace with hash 256492842, now seen corresponding path program 6 times [2024-06-28 01:30:51,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:51,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340824790] [2024-06-28 01:30:51,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:51,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:52,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:52,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340824790] [2024-06-28 01:30:52,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340824790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:52,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:52,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:52,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539208310] [2024-06-28 01:30:52,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:52,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:52,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:52,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:52,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:52,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:52,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 443 transitions, 6344 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:52,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:52,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:52,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:54,065 INFO L124 PetriNetUnfolderBase]: 5968/9455 cut-off events. [2024-06-28 01:30:54,066 INFO L125 PetriNetUnfolderBase]: For 259327/259577 co-relation queries the response was YES. [2024-06-28 01:30:54,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68869 conditions, 9455 events. 5968/9455 cut-off events. For 259327/259577 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 61645 event pairs, 1929 based on Foata normal form. 84/9315 useless extension candidates. Maximal degree in co-relation 68772. Up to 7966 conditions per place. [2024-06-28 01:30:54,176 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 383 selfloop transitions, 33 changer transitions 0/494 dead transitions. [2024-06-28 01:30:54,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 494 transitions, 7516 flow [2024-06-28 01:30:54,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 01:30:54,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-28 01:30:54,178 INFO L175 Difference]: Start difference. First operand has 212 places, 443 transitions, 6344 flow. Second operand 9 states and 219 transitions. [2024-06-28 01:30:54,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 494 transitions, 7516 flow [2024-06-28 01:30:54,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 494 transitions, 7369 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:54,804 INFO L231 Difference]: Finished difference. Result has 216 places, 448 transitions, 6389 flow [2024-06-28 01:30:54,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6197, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6389, PETRI_PLACES=216, PETRI_TRANSITIONS=448} [2024-06-28 01:30:54,804 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 163 predicate places. [2024-06-28 01:30:54,805 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 448 transitions, 6389 flow [2024-06-28 01:30:54,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:54,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:54,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:54,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:30:54,805 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:54,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash -795169364, now seen corresponding path program 1 times [2024-06-28 01:30:54,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:54,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164214399] [2024-06-28 01:30:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:54,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:55,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:55,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:55,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164214399] [2024-06-28 01:30:55,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164214399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:55,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:55,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:55,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299740695] [2024-06-28 01:30:55,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:55,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:55,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:55,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:55,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:56,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:56,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 448 transitions, 6389 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 01:30:56,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:56,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:56,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:58,028 INFO L124 PetriNetUnfolderBase]: 6261/9791 cut-off events. [2024-06-28 01:30:58,029 INFO L125 PetriNetUnfolderBase]: For 268319/268325 co-relation queries the response was YES. [2024-06-28 01:30:58,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71729 conditions, 9791 events. 6261/9791 cut-off events. For 268319/268325 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 62822 event pairs, 2080 based on Foata normal form. 9/9613 useless extension candidates. Maximal degree in co-relation 71631. Up to 8581 conditions per place. [2024-06-28 01:30:58,147 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 428 selfloop transitions, 76 changer transitions 0/513 dead transitions. [2024-06-28 01:30:58,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 513 transitions, 8034 flow [2024-06-28 01:30:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:58,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-28 01:30:58,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-28 01:30:58,148 INFO L175 Difference]: Start difference. First operand has 216 places, 448 transitions, 6389 flow. Second operand 10 states and 246 transitions. [2024-06-28 01:30:58,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 513 transitions, 8034 flow [2024-06-28 01:30:58,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 513 transitions, 7899 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 01:30:58,681 INFO L231 Difference]: Finished difference. Result has 222 places, 458 transitions, 6598 flow [2024-06-28 01:30:58,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6254, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6598, PETRI_PLACES=222, PETRI_TRANSITIONS=458} [2024-06-28 01:30:58,681 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 169 predicate places. [2024-06-28 01:30:58,682 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 458 transitions, 6598 flow [2024-06-28 01:30:58,682 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 01:30:58,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:58,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:58,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:30:58,682 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:58,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:58,683 INFO L85 PathProgramCache]: Analyzing trace with hash -678774935, now seen corresponding path program 1 times [2024-06-28 01:30:58,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:58,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356825937] [2024-06-28 01:30:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:59,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356825937] [2024-06-28 01:30:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356825937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:59,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610073673] [2024-06-28 01:30:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:59,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:59,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:59,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:59,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:59,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:30:59,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 458 transitions, 6598 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 01:30:59,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:59,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:30:59,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:01,844 INFO L124 PetriNetUnfolderBase]: 6329/9926 cut-off events. [2024-06-28 01:31:01,844 INFO L125 PetriNetUnfolderBase]: For 278588/278594 co-relation queries the response was YES. [2024-06-28 01:31:01,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73123 conditions, 9926 events. 6329/9926 cut-off events. For 278588/278594 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 63914 event pairs, 2050 based on Foata normal form. 12/9737 useless extension candidates. Maximal degree in co-relation 73022. Up to 8633 conditions per place. [2024-06-28 01:31:01,946 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 437 selfloop transitions, 77 changer transitions 0/523 dead transitions. [2024-06-28 01:31:01,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 523 transitions, 8255 flow [2024-06-28 01:31:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:01,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-28 01:31:01,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-28 01:31:01,948 INFO L175 Difference]: Start difference. First operand has 222 places, 458 transitions, 6598 flow. Second operand 10 states and 248 transitions. [2024-06-28 01:31:01,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 523 transitions, 8255 flow [2024-06-28 01:31:02,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 523 transitions, 8111 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 01:31:02,515 INFO L231 Difference]: Finished difference. Result has 229 places, 461 transitions, 6723 flow [2024-06-28 01:31:02,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6454, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6723, PETRI_PLACES=229, PETRI_TRANSITIONS=461} [2024-06-28 01:31:02,516 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 176 predicate places. [2024-06-28 01:31:02,516 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 461 transitions, 6723 flow [2024-06-28 01:31:02,517 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 01:31:02,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:02,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:02,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:31:02,517 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:02,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash -678775214, now seen corresponding path program 2 times [2024-06-28 01:31:02,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:02,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098991223] [2024-06-28 01:31:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:02,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:03,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:03,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098991223] [2024-06-28 01:31:03,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098991223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:03,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:03,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:03,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008518655] [2024-06-28 01:31:03,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:03,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:03,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:03,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:03,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:03,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:03,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 461 transitions, 6723 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 01:31:03,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:03,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:03,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:05,747 INFO L124 PetriNetUnfolderBase]: 6468/10084 cut-off events. [2024-06-28 01:31:05,748 INFO L125 PetriNetUnfolderBase]: For 294625/294625 co-relation queries the response was YES. [2024-06-28 01:31:05,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75520 conditions, 10084 events. 6468/10084 cut-off events. For 294625/294625 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 64568 event pairs, 1643 based on Foata normal form. 3/9897 useless extension candidates. Maximal degree in co-relation 75418. Up to 8110 conditions per place. [2024-06-28 01:31:05,876 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 334 selfloop transitions, 211 changer transitions 0/554 dead transitions. [2024-06-28 01:31:05,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 554 transitions, 9064 flow [2024-06-28 01:31:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-28 01:31:05,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-28 01:31:05,878 INFO L175 Difference]: Start difference. First operand has 229 places, 461 transitions, 6723 flow. Second operand 10 states and 253 transitions. [2024-06-28 01:31:05,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 554 transitions, 9064 flow [2024-06-28 01:31:06,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 554 transitions, 8862 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:06,550 INFO L231 Difference]: Finished difference. Result has 236 places, 492 transitions, 7889 flow [2024-06-28 01:31:06,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6521, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7889, PETRI_PLACES=236, PETRI_TRANSITIONS=492} [2024-06-28 01:31:06,551 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 183 predicate places. [2024-06-28 01:31:06,551 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 492 transitions, 7889 flow [2024-06-28 01:31:06,551 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 01:31:06,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:06,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:06,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:31:06,551 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:06,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:06,551 INFO L85 PathProgramCache]: Analyzing trace with hash -951091185, now seen corresponding path program 1 times [2024-06-28 01:31:06,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:06,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690106061] [2024-06-28 01:31:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:06,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:07,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:07,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690106061] [2024-06-28 01:31:07,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690106061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:07,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:07,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:31:07,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678695570] [2024-06-28 01:31:07,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:07,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:31:07,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:07,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:31:07,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:31:07,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:07,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 492 transitions, 7889 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 01:31:07,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:07,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:07,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:09,067 INFO L124 PetriNetUnfolderBase]: 6491/10183 cut-off events. [2024-06-28 01:31:09,067 INFO L125 PetriNetUnfolderBase]: For 319530/319530 co-relation queries the response was YES. [2024-06-28 01:31:09,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78553 conditions, 10183 events. 6491/10183 cut-off events. For 319530/319530 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 65930 event pairs, 1800 based on Foata normal form. 5/9977 useless extension candidates. Maximal degree in co-relation 78447. Up to 8981 conditions per place. [2024-06-28 01:31:09,214 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 429 selfloop transitions, 109 changer transitions 0/547 dead transitions. [2024-06-28 01:31:09,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 547 transitions, 9566 flow [2024-06-28 01:31:09,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:31:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:31:09,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:31:09,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-28 01:31:09,216 INFO L175 Difference]: Start difference. First operand has 236 places, 492 transitions, 7889 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:31:09,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 547 transitions, 9566 flow [2024-06-28 01:31:10,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 547 transitions, 9056 flow, removed 197 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:10,233 INFO L231 Difference]: Finished difference. Result has 240 places, 513 transitions, 8052 flow [2024-06-28 01:31:10,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7444, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8052, PETRI_PLACES=240, PETRI_TRANSITIONS=513} [2024-06-28 01:31:10,234 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 187 predicate places. [2024-06-28 01:31:10,234 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 513 transitions, 8052 flow [2024-06-28 01:31:10,234 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 01:31:10,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:10,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:10,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:31:10,235 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:10,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:10,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1128723878, now seen corresponding path program 7 times [2024-06-28 01:31:10,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:10,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387682671] [2024-06-28 01:31:10,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:10,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:11,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:11,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387682671] [2024-06-28 01:31:11,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387682671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:11,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:11,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:11,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314730640] [2024-06-28 01:31:11,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:11,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:11,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:11,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:11,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:11,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:31:11,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 513 transitions, 8052 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:11,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:11,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:31:11,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:13,190 INFO L124 PetriNetUnfolderBase]: 6352/10167 cut-off events. [2024-06-28 01:31:13,190 INFO L125 PetriNetUnfolderBase]: For 331703/332131 co-relation queries the response was YES. [2024-06-28 01:31:13,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77127 conditions, 10167 events. 6352/10167 cut-off events. For 331703/332131 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 67555 event pairs, 1531 based on Foata normal form. 97/9973 useless extension candidates. Maximal degree in co-relation 77018. Up to 8091 conditions per place. [2024-06-28 01:31:13,308 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 387 selfloop transitions, 75 changer transitions 0/557 dead transitions. [2024-06-28 01:31:13,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 557 transitions, 9270 flow [2024-06-28 01:31:13,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:13,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:31:13,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:31:13,310 INFO L175 Difference]: Start difference. First operand has 240 places, 513 transitions, 8052 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:31:13,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 557 transitions, 9270 flow [2024-06-28 01:31:14,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 557 transitions, 9104 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:14,086 INFO L231 Difference]: Finished difference. Result has 245 places, 517 transitions, 8216 flow [2024-06-28 01:31:14,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7886, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8216, PETRI_PLACES=245, PETRI_TRANSITIONS=517} [2024-06-28 01:31:14,086 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2024-06-28 01:31:14,087 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 517 transitions, 8216 flow [2024-06-28 01:31:14,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:14,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:14,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:14,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:31:14,087 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:14,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:14,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1131610598, now seen corresponding path program 8 times [2024-06-28 01:31:14,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:14,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207914611] [2024-06-28 01:31:14,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:14,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:14,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:14,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207914611] [2024-06-28 01:31:14,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207914611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:14,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:14,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:14,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706682487] [2024-06-28 01:31:14,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:14,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:14,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:14,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:14,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:15,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:31:15,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 517 transitions, 8216 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:15,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:15,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:31:15,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:17,231 INFO L124 PetriNetUnfolderBase]: 6340/10077 cut-off events. [2024-06-28 01:31:17,231 INFO L125 PetriNetUnfolderBase]: For 349249/349600 co-relation queries the response was YES. [2024-06-28 01:31:17,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79089 conditions, 10077 events. 6340/10077 cut-off events. For 349249/349600 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 66683 event pairs, 1825 based on Foata normal form. 124/9958 useless extension candidates. Maximal degree in co-relation 78978. Up to 8264 conditions per place. [2024-06-28 01:31:17,344 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 392 selfloop transitions, 82 changer transitions 0/569 dead transitions. [2024-06-28 01:31:17,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 569 transitions, 9694 flow [2024-06-28 01:31:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:31:17,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:31:17,345 INFO L175 Difference]: Start difference. First operand has 245 places, 517 transitions, 8216 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:31:17,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 569 transitions, 9694 flow [2024-06-28 01:31:18,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 569 transitions, 9514 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:18,293 INFO L231 Difference]: Finished difference. Result has 249 places, 525 transitions, 8589 flow [2024-06-28 01:31:18,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8036, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8589, PETRI_PLACES=249, PETRI_TRANSITIONS=525} [2024-06-28 01:31:18,294 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 196 predicate places. [2024-06-28 01:31:18,294 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 525 transitions, 8589 flow [2024-06-28 01:31:18,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:18,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:18,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:18,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:31:18,295 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:18,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:18,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1247795498, now seen corresponding path program 9 times [2024-06-28 01:31:18,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:18,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612742654] [2024-06-28 01:31:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:18,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:19,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:19,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612742654] [2024-06-28 01:31:19,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612742654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:19,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:19,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:19,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120024057] [2024-06-28 01:31:19,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:19,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:19,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:19,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:19,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:19,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:31:19,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 525 transitions, 8589 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:19,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:19,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:31:19,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:21,616 INFO L124 PetriNetUnfolderBase]: 6308/9982 cut-off events. [2024-06-28 01:31:21,616 INFO L125 PetriNetUnfolderBase]: For 356234/356438 co-relation queries the response was YES. [2024-06-28 01:31:21,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79512 conditions, 9982 events. 6308/9982 cut-off events. For 356234/356438 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 65556 event pairs, 1431 based on Foata normal form. 64/9832 useless extension candidates. Maximal degree in co-relation 79399. Up to 8235 conditions per place. [2024-06-28 01:31:21,733 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 413 selfloop transitions, 62 changer transitions 0/570 dead transitions. [2024-06-28 01:31:21,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 570 transitions, 9884 flow [2024-06-28 01:31:21,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:21,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:31:21,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:31:21,734 INFO L175 Difference]: Start difference. First operand has 249 places, 525 transitions, 8589 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:31:21,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 570 transitions, 9884 flow [2024-06-28 01:31:22,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 570 transitions, 9609 flow, removed 107 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:22,737 INFO L231 Difference]: Finished difference. Result has 254 places, 529 transitions, 8604 flow [2024-06-28 01:31:22,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8314, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8604, PETRI_PLACES=254, PETRI_TRANSITIONS=529} [2024-06-28 01:31:22,738 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 201 predicate places. [2024-06-28 01:31:22,738 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 529 transitions, 8604 flow [2024-06-28 01:31:22,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:22,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:22,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:22,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:31:22,739 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:22,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1131616550, now seen corresponding path program 3 times [2024-06-28 01:31:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:22,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207965954] [2024-06-28 01:31:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:23,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:23,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:23,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207965954] [2024-06-28 01:31:23,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207965954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:23,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:23,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:23,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358788500] [2024-06-28 01:31:23,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:23,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:23,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:23,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:23,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:23,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:23,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 529 transitions, 8604 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 01:31:23,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:23,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:23,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:26,349 INFO L124 PetriNetUnfolderBase]: 6596/10424 cut-off events. [2024-06-28 01:31:26,349 INFO L125 PetriNetUnfolderBase]: For 372403/372409 co-relation queries the response was YES. [2024-06-28 01:31:26,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82595 conditions, 10424 events. 6596/10424 cut-off events. For 372403/372409 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 68324 event pairs, 1949 based on Foata normal form. 9/10219 useless extension candidates. Maximal degree in co-relation 82479. Up to 8813 conditions per place. [2024-06-28 01:31:26,469 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 449 selfloop transitions, 122 changer transitions 0/580 dead transitions. [2024-06-28 01:31:26,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 580 transitions, 10220 flow [2024-06-28 01:31:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:26,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:31:26,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-28 01:31:26,470 INFO L175 Difference]: Start difference. First operand has 254 places, 529 transitions, 8604 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:31:26,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 580 transitions, 10220 flow [2024-06-28 01:31:27,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 580 transitions, 9973 flow, removed 83 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:27,439 INFO L231 Difference]: Finished difference. Result has 259 places, 529 transitions, 8624 flow [2024-06-28 01:31:27,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8357, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8624, PETRI_PLACES=259, PETRI_TRANSITIONS=529} [2024-06-28 01:31:27,440 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 206 predicate places. [2024-06-28 01:31:27,440 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 529 transitions, 8624 flow [2024-06-28 01:31:27,441 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 01:31:27,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:27,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:27,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:31:27,441 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:27,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:27,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1248010979, now seen corresponding path program 2 times [2024-06-28 01:31:27,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:27,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268514474] [2024-06-28 01:31:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:27,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:28,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:28,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268514474] [2024-06-28 01:31:28,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268514474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:28,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:28,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:28,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375243941] [2024-06-28 01:31:28,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:28,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:28,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:28,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:28,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:28,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:28,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 529 transitions, 8624 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 01:31:28,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:28,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:28,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:31,102 INFO L124 PetriNetUnfolderBase]: 6988/10933 cut-off events. [2024-06-28 01:31:31,102 INFO L125 PetriNetUnfolderBase]: For 434334/434340 co-relation queries the response was YES. [2024-06-28 01:31:31,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88789 conditions, 10933 events. 6988/10933 cut-off events. For 434334/434340 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 71520 event pairs, 2049 based on Foata normal form. 42/10779 useless extension candidates. Maximal degree in co-relation 88672. Up to 8689 conditions per place. [2024-06-28 01:31:31,242 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 481 selfloop transitions, 104 changer transitions 0/594 dead transitions. [2024-06-28 01:31:31,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 594 transitions, 10474 flow [2024-06-28 01:31:31,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:31,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 01:31:31,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366430260047281 [2024-06-28 01:31:31,244 INFO L175 Difference]: Start difference. First operand has 259 places, 529 transitions, 8624 flow. Second operand 9 states and 227 transitions. [2024-06-28 01:31:31,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 594 transitions, 10474 flow [2024-06-28 01:31:32,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 594 transitions, 10045 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:32,097 INFO L231 Difference]: Finished difference. Result has 260 places, 535 transitions, 8569 flow [2024-06-28 01:31:32,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8199, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8569, PETRI_PLACES=260, PETRI_TRANSITIONS=535} [2024-06-28 01:31:32,098 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 207 predicate places. [2024-06-28 01:31:32,098 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 535 transitions, 8569 flow [2024-06-28 01:31:32,098 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 01:31:32,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:32,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:32,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:31:32,099 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:32,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1248010700, now seen corresponding path program 4 times [2024-06-28 01:31:32,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:32,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436243633] [2024-06-28 01:31:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:33,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:33,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436243633] [2024-06-28 01:31:33,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436243633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:33,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:33,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:33,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839325369] [2024-06-28 01:31:33,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:33,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:33,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:33,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:33,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:33,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 535 transitions, 8569 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 01:31:33,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:33,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:33,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:35,672 INFO L124 PetriNetUnfolderBase]: 7162/11274 cut-off events. [2024-06-28 01:31:35,672 INFO L125 PetriNetUnfolderBase]: For 428303/428309 co-relation queries the response was YES. [2024-06-28 01:31:35,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91725 conditions, 11274 events. 7162/11274 cut-off events. For 428303/428309 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 74629 event pairs, 2099 based on Foata normal form. 9/11075 useless extension candidates. Maximal degree in co-relation 91607. Up to 9334 conditions per place. [2024-06-28 01:31:35,830 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 488 selfloop transitions, 120 changer transitions 0/617 dead transitions. [2024-06-28 01:31:35,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 617 transitions, 10684 flow [2024-06-28 01:31:35,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-28 01:31:35,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255319148936171 [2024-06-28 01:31:35,832 INFO L175 Difference]: Start difference. First operand has 260 places, 535 transitions, 8569 flow. Second operand 10 states and 247 transitions. [2024-06-28 01:31:35,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 617 transitions, 10684 flow [2024-06-28 01:31:37,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 617 transitions, 10425 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:37,031 INFO L231 Difference]: Finished difference. Result has 264 places, 557 transitions, 9010 flow [2024-06-28 01:31:37,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8331, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9010, PETRI_PLACES=264, PETRI_TRANSITIONS=557} [2024-06-28 01:31:37,032 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 211 predicate places. [2024-06-28 01:31:37,032 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 557 transitions, 9010 flow [2024-06-28 01:31:37,032 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 01:31:37,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:37,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:37,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:31:37,033 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:37,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash 565775365, now seen corresponding path program 2 times [2024-06-28 01:31:37,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:37,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847547409] [2024-06-28 01:31:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:37,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:37,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:37,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847547409] [2024-06-28 01:31:37,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847547409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:37,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:37,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:31:37,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497016384] [2024-06-28 01:31:37,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:37,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:31:37,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:37,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:31:37,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:31:37,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:37,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 557 transitions, 9010 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 01:31:37,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:37,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:37,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:40,313 INFO L124 PetriNetUnfolderBase]: 7239/11450 cut-off events. [2024-06-28 01:31:40,313 INFO L125 PetriNetUnfolderBase]: For 415734/415734 co-relation queries the response was YES. [2024-06-28 01:31:40,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92846 conditions, 11450 events. 7239/11450 cut-off events. For 415734/415734 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 76523 event pairs, 1694 based on Foata normal form. 2/11212 useless extension candidates. Maximal degree in co-relation 92726. Up to 10044 conditions per place. [2024-06-28 01:31:40,451 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 477 selfloop transitions, 137 changer transitions 0/623 dead transitions. [2024-06-28 01:31:40,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 623 transitions, 11113 flow [2024-06-28 01:31:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:31:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:31:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:31:40,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5141843971631206 [2024-06-28 01:31:40,453 INFO L175 Difference]: Start difference. First operand has 264 places, 557 transitions, 9010 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:31:40,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 623 transitions, 11113 flow [2024-06-28 01:31:41,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 623 transitions, 10768 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:41,503 INFO L231 Difference]: Finished difference. Result has 264 places, 589 transitions, 9571 flow [2024-06-28 01:31:41,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8681, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9571, PETRI_PLACES=264, PETRI_TRANSITIONS=589} [2024-06-28 01:31:41,507 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 211 predicate places. [2024-06-28 01:31:41,509 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 589 transitions, 9571 flow [2024-06-28 01:31:41,509 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 01:31:41,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:41,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:41,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:31:41,510 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:41,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash 559074538, now seen corresponding path program 10 times [2024-06-28 01:31:41,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:41,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336366927] [2024-06-28 01:31:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:41,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:42,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:42,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336366927] [2024-06-28 01:31:42,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336366927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:42,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:42,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:42,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679610447] [2024-06-28 01:31:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:42,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:42,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:42,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:31:42,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 589 transitions, 9571 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:42,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:42,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:31:42,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:45,246 INFO L124 PetriNetUnfolderBase]: 6994/11419 cut-off events. [2024-06-28 01:31:45,247 INFO L125 PetriNetUnfolderBase]: For 418335/418754 co-relation queries the response was YES. [2024-06-28 01:31:45,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89227 conditions, 11419 events. 6994/11419 cut-off events. For 418335/418754 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 78731 event pairs, 1875 based on Foata normal form. 114/11176 useless extension candidates. Maximal degree in co-relation 89106. Up to 9244 conditions per place. [2024-06-28 01:31:45,385 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 479 selfloop transitions, 41 changer transitions 0/634 dead transitions. [2024-06-28 01:31:45,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 634 transitions, 10984 flow [2024-06-28 01:31:45,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:31:45,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:31:45,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:31:45,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:31:45,386 INFO L175 Difference]: Start difference. First operand has 264 places, 589 transitions, 9571 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:31:45,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 634 transitions, 10984 flow [2024-06-28 01:31:46,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 634 transitions, 10743 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 01:31:46,280 INFO L231 Difference]: Finished difference. Result has 269 places, 593 transitions, 9560 flow [2024-06-28 01:31:46,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9330, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9560, PETRI_PLACES=269, PETRI_TRANSITIONS=593} [2024-06-28 01:31:46,281 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 216 predicate places. [2024-06-28 01:31:46,281 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 593 transitions, 9560 flow [2024-06-28 01:31:46,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:46,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:46,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:46,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:31:46,282 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:46,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:46,282 INFO L85 PathProgramCache]: Analyzing trace with hash 815790529, now seen corresponding path program 3 times [2024-06-28 01:31:46,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:46,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380374369] [2024-06-28 01:31:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:46,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:47,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:47,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380374369] [2024-06-28 01:31:47,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380374369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:47,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:47,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936996170] [2024-06-28 01:31:47,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:47,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:47,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:47,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:47,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:47,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:47,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 593 transitions, 9560 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 01:31:47,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:47,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:47,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:49,888 INFO L124 PetriNetUnfolderBase]: 7307/11512 cut-off events. [2024-06-28 01:31:49,888 INFO L125 PetriNetUnfolderBase]: For 443116/443128 co-relation queries the response was YES. [2024-06-28 01:31:49,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93295 conditions, 11512 events. 7307/11512 cut-off events. For 443116/443128 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 75292 event pairs, 1811 based on Foata normal form. 18/11320 useless extension candidates. Maximal degree in co-relation 93173. Up to 9733 conditions per place. [2024-06-28 01:31:50,065 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 503 selfloop transitions, 136 changer transitions 0/648 dead transitions. [2024-06-28 01:31:50,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 648 transitions, 11422 flow [2024-06-28 01:31:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:50,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:50,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-28 01:31:50,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085106382978724 [2024-06-28 01:31:50,067 INFO L175 Difference]: Start difference. First operand has 269 places, 593 transitions, 9560 flow. Second operand 10 states and 239 transitions. [2024-06-28 01:31:50,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 648 transitions, 11422 flow [2024-06-28 01:31:51,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 648 transitions, 11229 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:51,204 INFO L231 Difference]: Finished difference. Result has 274 places, 596 transitions, 9782 flow [2024-06-28 01:31:51,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9367, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9782, PETRI_PLACES=274, PETRI_TRANSITIONS=596} [2024-06-28 01:31:51,205 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 221 predicate places. [2024-06-28 01:31:51,205 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 596 transitions, 9782 flow [2024-06-28 01:31:51,205 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 01:31:51,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:51,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:51,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:31:51,206 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:51,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:51,206 INFO L85 PathProgramCache]: Analyzing trace with hash 559289740, now seen corresponding path program 5 times [2024-06-28 01:31:51,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:51,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694688109] [2024-06-28 01:31:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:51,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:52,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:52,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694688109] [2024-06-28 01:31:52,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694688109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:52,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:52,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:52,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345720263] [2024-06-28 01:31:52,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:52,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:52,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:52,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:52,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:52,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:52,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 596 transitions, 9782 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 01:31:52,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:52,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:52,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:54,930 INFO L124 PetriNetUnfolderBase]: 7391/11996 cut-off events. [2024-06-28 01:31:54,930 INFO L125 PetriNetUnfolderBase]: For 457839/457851 co-relation queries the response was YES. [2024-06-28 01:31:55,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95526 conditions, 11996 events. 7391/11996 cut-off events. For 457839/457851 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 82082 event pairs, 2015 based on Foata normal form. 15/11688 useless extension candidates. Maximal degree in co-relation 95403. Up to 9445 conditions per place. [2024-06-28 01:31:55,094 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 539 selfloop transitions, 120 changer transitions 0/668 dead transitions. [2024-06-28 01:31:55,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 668 transitions, 11972 flow [2024-06-28 01:31:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 250 transitions. [2024-06-28 01:31:55,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:31:55,096 INFO L175 Difference]: Start difference. First operand has 274 places, 596 transitions, 9782 flow. Second operand 10 states and 250 transitions. [2024-06-28 01:31:55,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 668 transitions, 11972 flow [2024-06-28 01:31:56,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 668 transitions, 11542 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:56,093 INFO L231 Difference]: Finished difference. Result has 278 places, 605 transitions, 9843 flow [2024-06-28 01:31:56,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9362, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9843, PETRI_PLACES=278, PETRI_TRANSITIONS=605} [2024-06-28 01:31:56,094 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 225 predicate places. [2024-06-28 01:31:56,094 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 605 transitions, 9843 flow [2024-06-28 01:31:56,095 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 01:31:56,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:56,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:56,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:31:56,095 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:31:56,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:56,096 INFO L85 PathProgramCache]: Analyzing trace with hash 815790250, now seen corresponding path program 6 times [2024-06-28 01:31:56,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:56,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121308168] [2024-06-28 01:31:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:56,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:57,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:57,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121308168] [2024-06-28 01:31:57,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121308168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:57,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:57,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:57,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702376056] [2024-06-28 01:31:57,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:57,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:57,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:57,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:57,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:31:57,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 605 transitions, 9843 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 01:31:57,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:57,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:31:57,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:59,884 INFO L124 PetriNetUnfolderBase]: 7433/12087 cut-off events. [2024-06-28 01:31:59,884 INFO L125 PetriNetUnfolderBase]: For 472950/472962 co-relation queries the response was YES. [2024-06-28 01:31:59,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96926 conditions, 12087 events. 7433/12087 cut-off events. For 472950/472962 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 82986 event pairs, 1986 based on Foata normal form. 15/11771 useless extension candidates. Maximal degree in co-relation 96801. Up to 9519 conditions per place. [2024-06-28 01:32:00,033 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 517 selfloop transitions, 147 changer transitions 0/673 dead transitions. [2024-06-28 01:32:00,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 673 transitions, 11915 flow [2024-06-28 01:32:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:32:00,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:32:00,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-28 01:32:00,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-28 01:32:00,034 INFO L175 Difference]: Start difference. First operand has 278 places, 605 transitions, 9843 flow. Second operand 10 states and 248 transitions. [2024-06-28 01:32:00,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 673 transitions, 11915 flow [2024-06-28 01:32:01,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 673 transitions, 11520 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:01,191 INFO L231 Difference]: Finished difference. Result has 283 places, 613 transitions, 9980 flow [2024-06-28 01:32:01,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9448, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9980, PETRI_PLACES=283, PETRI_TRANSITIONS=613} [2024-06-28 01:32:01,192 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 230 predicate places. [2024-06-28 01:32:01,192 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 613 transitions, 9980 flow [2024-06-28 01:32:01,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:01,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:01,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:01,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:32:01,192 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:01,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:01,193 INFO L85 PathProgramCache]: Analyzing trace with hash 559290019, now seen corresponding path program 4 times [2024-06-28 01:32:01,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:01,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191704244] [2024-06-28 01:32:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:01,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:02,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:02,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191704244] [2024-06-28 01:32:02,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191704244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:02,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:02,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:02,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710032592] [2024-06-28 01:32:02,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:02,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:02,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:02,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:02,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:02,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:32:02,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 613 transitions, 9980 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 01:32:02,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:02,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:32:02,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:05,151 INFO L124 PetriNetUnfolderBase]: 7536/11899 cut-off events. [2024-06-28 01:32:05,151 INFO L125 PetriNetUnfolderBase]: For 502937/502949 co-relation queries the response was YES. [2024-06-28 01:32:05,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99186 conditions, 11899 events. 7536/11899 cut-off events. For 502937/502949 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 78381 event pairs, 1828 based on Foata normal form. 18/11698 useless extension candidates. Maximal degree in co-relation 99058. Up to 10043 conditions per place. [2024-06-28 01:32:05,289 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 547 selfloop transitions, 129 changer transitions 0/685 dead transitions. [2024-06-28 01:32:05,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 685 transitions, 12379 flow [2024-06-28 01:32:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:32:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:32:05,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 240 transitions. [2024-06-28 01:32:05,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:32:05,290 INFO L175 Difference]: Start difference. First operand has 283 places, 613 transitions, 9980 flow. Second operand 10 states and 240 transitions. [2024-06-28 01:32:05,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 685 transitions, 12379 flow [2024-06-28 01:32:06,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 685 transitions, 11926 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:06,482 INFO L231 Difference]: Finished difference. Result has 289 places, 631 transitions, 10308 flow [2024-06-28 01:32:06,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9527, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10308, PETRI_PLACES=289, PETRI_TRANSITIONS=631} [2024-06-28 01:32:06,483 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 236 predicate places. [2024-06-28 01:32:06,483 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 631 transitions, 10308 flow [2024-06-28 01:32:06,483 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 01:32:06,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:06,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:06,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:32:06,483 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:06,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash 824996599, now seen corresponding path program 5 times [2024-06-28 01:32:06,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:06,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087584023] [2024-06-28 01:32:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:06,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:07,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:07,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:07,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087584023] [2024-06-28 01:32:07,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087584023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:07,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:07,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:07,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9190618] [2024-06-28 01:32:07,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:07,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:07,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:07,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:07,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:07,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:32:07,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 631 transitions, 10308 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 01:32:07,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:07,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:32:07,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:10,947 INFO L124 PetriNetUnfolderBase]: 8031/12801 cut-off events. [2024-06-28 01:32:10,947 INFO L125 PetriNetUnfolderBase]: For 626269/626281 co-relation queries the response was YES. [2024-06-28 01:32:11,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110343 conditions, 12801 events. 8031/12801 cut-off events. For 626269/626281 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 86804 event pairs, 1922 based on Foata normal form. 18/12547 useless extension candidates. Maximal degree in co-relation 110212. Up to 8686 conditions per place. [2024-06-28 01:32:11,118 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 505 selfloop transitions, 190 changer transitions 0/704 dead transitions. [2024-06-28 01:32:11,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 704 transitions, 12943 flow [2024-06-28 01:32:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:32:11,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484633569739953 [2024-06-28 01:32:11,119 INFO L175 Difference]: Start difference. First operand has 289 places, 631 transitions, 10308 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:32:11,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 704 transitions, 12943 flow [2024-06-28 01:32:13,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 704 transitions, 12420 flow, removed 230 selfloop flow, removed 3 redundant places. [2024-06-28 01:32:13,202 INFO L231 Difference]: Finished difference. Result has 296 places, 643 transitions, 10700 flow [2024-06-28 01:32:13,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9923, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10700, PETRI_PLACES=296, PETRI_TRANSITIONS=643} [2024-06-28 01:32:13,203 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 243 predicate places. [2024-06-28 01:32:13,203 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 643 transitions, 10700 flow [2024-06-28 01:32:13,204 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 01:32:13,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:13,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:13,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:32:13,204 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:13,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash 824987020, now seen corresponding path program 7 times [2024-06-28 01:32:13,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:13,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537511567] [2024-06-28 01:32:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:13,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:14,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:14,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537511567] [2024-06-28 01:32:14,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537511567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:14,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:14,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:14,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238289442] [2024-06-28 01:32:14,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:14,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:14,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:14,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:14,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:32:14,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 643 transitions, 10700 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 01:32:14,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:14,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:32:14,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:18,237 INFO L124 PetriNetUnfolderBase]: 8050/12804 cut-off events. [2024-06-28 01:32:18,237 INFO L125 PetriNetUnfolderBase]: For 631724/631736 co-relation queries the response was YES. [2024-06-28 01:32:18,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112753 conditions, 12804 events. 8050/12804 cut-off events. For 631724/631736 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 87541 event pairs, 2078 based on Foata normal form. 15/12538 useless extension candidates. Maximal degree in co-relation 112619. Up to 9997 conditions per place. [2024-06-28 01:32:18,526 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 518 selfloop transitions, 189 changer transitions 0/716 dead transitions. [2024-06-28 01:32:18,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 716 transitions, 12930 flow [2024-06-28 01:32:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:18,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 274 transitions. [2024-06-28 01:32:18,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299806576402321 [2024-06-28 01:32:18,533 INFO L175 Difference]: Start difference. First operand has 296 places, 643 transitions, 10700 flow. Second operand 11 states and 274 transitions. [2024-06-28 01:32:18,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 716 transitions, 12930 flow [2024-06-28 01:32:20,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 716 transitions, 12625 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:20,286 INFO L231 Difference]: Finished difference. Result has 303 places, 647 transitions, 10981 flow [2024-06-28 01:32:20,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10395, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10981, PETRI_PLACES=303, PETRI_TRANSITIONS=647} [2024-06-28 01:32:20,287 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 250 predicate places. [2024-06-28 01:32:20,287 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 647 transitions, 10981 flow [2024-06-28 01:32:20,287 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 01:32:20,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:20,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:20,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:32:20,287 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:20,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:20,287 INFO L85 PathProgramCache]: Analyzing trace with hash 824987299, now seen corresponding path program 6 times [2024-06-28 01:32:20,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:20,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136512102] [2024-06-28 01:32:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:20,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:21,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:21,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136512102] [2024-06-28 01:32:21,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136512102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:21,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:21,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:21,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238240372] [2024-06-28 01:32:21,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:21,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:21,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:21,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:21,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:21,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:32:21,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 647 transitions, 10981 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 01:32:21,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:21,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:32:21,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:25,362 INFO L124 PetriNetUnfolderBase]: 8348/13211 cut-off events. [2024-06-28 01:32:25,362 INFO L125 PetriNetUnfolderBase]: For 717045/717057 co-relation queries the response was YES. [2024-06-28 01:32:25,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119857 conditions, 13211 events. 8348/13211 cut-off events. For 717045/717057 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 90177 event pairs, 2089 based on Foata normal form. 48/12993 useless extension candidates. Maximal degree in co-relation 119721. Up to 10094 conditions per place. [2024-06-28 01:32:25,533 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 529 selfloop transitions, 177 changer transitions 0/715 dead transitions. [2024-06-28 01:32:25,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 715 transitions, 13183 flow [2024-06-28 01:32:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:32:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:32:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-28 01:32:25,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-28 01:32:25,534 INFO L175 Difference]: Start difference. First operand has 303 places, 647 transitions, 10981 flow. Second operand 10 states and 255 transitions. [2024-06-28 01:32:25,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 715 transitions, 13183 flow [2024-06-28 01:32:27,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 715 transitions, 12645 flow, removed 85 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:27,334 INFO L231 Difference]: Finished difference. Result has 304 places, 649 transitions, 10938 flow [2024-06-28 01:32:27,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10443, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10938, PETRI_PLACES=304, PETRI_TRANSITIONS=649} [2024-06-28 01:32:27,335 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 251 predicate places. [2024-06-28 01:32:27,335 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 649 transitions, 10938 flow [2024-06-28 01:32:27,335 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 01:32:27,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:27,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:27,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:32:27,336 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:27,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:27,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2121141807, now seen corresponding path program 3 times [2024-06-28 01:32:27,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:27,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711897449] [2024-06-28 01:32:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:27,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:27,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:27,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711897449] [2024-06-28 01:32:27,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711897449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:27,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:27,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:27,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053084606] [2024-06-28 01:32:27,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:27,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:27,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:27,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:27,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:27,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:32:27,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 649 transitions, 10938 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 01:32:27,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:27,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:32:27,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:31,551 INFO L124 PetriNetUnfolderBase]: 8342/13318 cut-off events. [2024-06-28 01:32:31,551 INFO L125 PetriNetUnfolderBase]: For 701329/701329 co-relation queries the response was YES. [2024-06-28 01:32:31,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119720 conditions, 13318 events. 8342/13318 cut-off events. For 701329/701329 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 92248 event pairs, 1932 based on Foata normal form. 2/13031 useless extension candidates. Maximal degree in co-relation 119583. Up to 11683 conditions per place. [2024-06-28 01:32:31,927 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 531 selfloop transitions, 136 changer transitions 0/676 dead transitions. [2024-06-28 01:32:31,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 676 transitions, 12492 flow [2024-06-28 01:32:31,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:32:31,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-28 01:32:31,929 INFO L175 Difference]: Start difference. First operand has 304 places, 649 transitions, 10938 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:32:31,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 676 transitions, 12492 flow [2024-06-28 01:32:33,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 676 transitions, 12055 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-28 01:32:33,601 INFO L231 Difference]: Finished difference. Result has 302 places, 649 transitions, 10817 flow [2024-06-28 01:32:33,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10509, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10817, PETRI_PLACES=302, PETRI_TRANSITIONS=649} [2024-06-28 01:32:33,602 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 249 predicate places. [2024-06-28 01:32:33,602 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 649 transitions, 10817 flow [2024-06-28 01:32:33,602 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 01:32:33,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:33,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:33,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:32:33,602 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:33,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:33,602 INFO L85 PathProgramCache]: Analyzing trace with hash 571525028, now seen corresponding path program 1 times [2024-06-28 01:32:33,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:33,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988096029] [2024-06-28 01:32:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:33,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:34,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:34,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988096029] [2024-06-28 01:32:34,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988096029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:34,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:34,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:34,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125316037] [2024-06-28 01:32:34,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:34,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:34,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:34,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:34,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:32:34,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 649 transitions, 10817 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:34,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:34,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:32:34,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:37,621 INFO L124 PetriNetUnfolderBase]: 7836/12920 cut-off events. [2024-06-28 01:32:37,622 INFO L125 PetriNetUnfolderBase]: For 603482/603482 co-relation queries the response was YES. [2024-06-28 01:32:37,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110831 conditions, 12920 events. 7836/12920 cut-off events. For 603482/603482 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 92672 event pairs, 2467 based on Foata normal form. 2/12592 useless extension candidates. Maximal degree in co-relation 110693. Up to 11144 conditions per place. [2024-06-28 01:32:37,785 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 642 selfloop transitions, 22 changer transitions 0/674 dead transitions. [2024-06-28 01:32:37,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 674 transitions, 12420 flow [2024-06-28 01:32:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 01:32:37,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-28 01:32:37,786 INFO L175 Difference]: Start difference. First operand has 302 places, 649 transitions, 10817 flow. Second operand 6 states and 146 transitions. [2024-06-28 01:32:37,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 674 transitions, 12420 flow [2024-06-28 01:32:39,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 674 transitions, 12069 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:32:39,423 INFO L231 Difference]: Finished difference. Result has 303 places, 652 transitions, 10577 flow [2024-06-28 01:32:39,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10466, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10577, PETRI_PLACES=303, PETRI_TRANSITIONS=652} [2024-06-28 01:32:39,424 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 250 predicate places. [2024-06-28 01:32:39,424 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 652 transitions, 10577 flow [2024-06-28 01:32:39,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:39,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:39,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:39,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:32:39,424 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:39,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1122443078, now seen corresponding path program 2 times [2024-06-28 01:32:39,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:39,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869734410] [2024-06-28 01:32:39,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:39,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:39,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:39,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869734410] [2024-06-28 01:32:39,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869734410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:39,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:39,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:32:39,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33228206] [2024-06-28 01:32:39,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:39,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:32:39,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:39,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:32:39,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:32:40,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:32:40,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 652 transitions, 10577 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:40,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:40,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:32:40,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:43,338 INFO L124 PetriNetUnfolderBase]: 7790/12695 cut-off events. [2024-06-28 01:32:43,338 INFO L125 PetriNetUnfolderBase]: For 604135/604135 co-relation queries the response was YES. [2024-06-28 01:32:43,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109848 conditions, 12695 events. 7790/12695 cut-off events. For 604135/604135 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 89746 event pairs, 2591 based on Foata normal form. 1/12425 useless extension candidates. Maximal degree in co-relation 109709. Up to 11143 conditions per place. [2024-06-28 01:32:43,509 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 644 selfloop transitions, 14 changer transitions 0/668 dead transitions. [2024-06-28 01:32:43,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 668 transitions, 11975 flow [2024-06-28 01:32:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:32:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:32:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:32:43,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2024-06-28 01:32:43,510 INFO L175 Difference]: Start difference. First operand has 303 places, 652 transitions, 10577 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:32:43,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 668 transitions, 11975 flow [2024-06-28 01:32:45,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 668 transitions, 11923 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:32:45,084 INFO L231 Difference]: Finished difference. Result has 305 places, 652 transitions, 10559 flow [2024-06-28 01:32:45,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10525, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10559, PETRI_PLACES=305, PETRI_TRANSITIONS=652} [2024-06-28 01:32:45,085 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 252 predicate places. [2024-06-28 01:32:45,085 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 652 transitions, 10559 flow [2024-06-28 01:32:45,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:45,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:45,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:45,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:32:45,086 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:32:45,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:45,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1673041141, now seen corresponding path program 1 times [2024-06-28 01:32:45,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:45,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34642340] [2024-06-28 01:32:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:45,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:46,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:46,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34642340] [2024-06-28 01:32:46,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34642340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:46,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:46,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:32:46,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735282947] [2024-06-28 01:32:46,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:46,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:32:46,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:32:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:32:46,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-28 01:32:46,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 652 transitions, 10559 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 01:32:46,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:46,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-28 01:32:46,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand