./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe009_power.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/safe009_power.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe009_power.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 [2024-06-27 18:53:09,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:53:09,363 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:53:09,368 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:53:09,369 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:53:09,399 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:53:09,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:53:09,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:53:09,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:53:09,404 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:53:09,405 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:53:09,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:53:09,406 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:53:09,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:53:09,408 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:53:09,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:53:09,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:53:09,408 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:53:09,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:53:09,409 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:53:09,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:53:09,410 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:53:09,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:53:09,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:53:09,411 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:53:09,411 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:53:09,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:53:09,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:53:09,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:53:09,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:53:09,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:53:09,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:53:09,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:53:09,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:53:09,415 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:53:09,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:53:09,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:53:09,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:53:09,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:53:09,416 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:53:09,416 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:53:09,416 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:53:09,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:53:09,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:53:09,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:53:09,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:53:09,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:53:09,731 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:53:09,732 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:53:09,733 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe009_power.opt.yml/witness.yml [2024-06-27 18:53:09,927 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:53:09,927 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:53:09,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_power.opt.i [2024-06-27 18:53:11,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:53:11,307 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:53:11,307 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_power.opt.i [2024-06-27 18:53:11,323 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638d2c23f/c66051e6f99c42d6bdcea4968193b0ec/FLAG3697e83e0 [2024-06-27 18:53:11,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/638d2c23f/c66051e6f99c42d6bdcea4968193b0ec [2024-06-27 18:53:11,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:53:11,337 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:53:11,338 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:53:11,338 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:53:11,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:53:11,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:53:09" (1/2) ... [2024-06-27 18:53:11,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ecd6024 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:11, skipping insertion in model container [2024-06-27 18:53:11,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:53:09" (1/2) ... [2024-06-27 18:53:11,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54638bb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:53:11, skipping insertion in model container [2024-06-27 18:53:11,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:53:11" (2/2) ... [2024-06-27 18:53:11,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ecd6024 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:11, skipping insertion in model container [2024-06-27 18:53:11,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:53:11" (2/2) ... [2024-06-27 18:53:11,348 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:53:11,483 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:53:11,485 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] (((((((((((((((((((((((((((((((! multithreaded || x$r_buff0_thd3 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:53:11,485 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((((((((((((! multithreaded || x$r_buff0_thd3 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:53:11,485 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((((((((((! multithreaded || x$r_buff0_thd3 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || __unbuffered_p1_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX$read_delayed_var == 0 || (__unbuffered_p1_EAX$read_delayed_var == & x && (*__unbuffered_p1_EAX$read_delayed_var == 0 || *__unbuffered_p1_EAX$read_delayed_var == 1))))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || __unbuffered_p1_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p1_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 18:53:11,485 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:53:11,486 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-27 18:53:11,531 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:53:11,715 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/safe009_power.opt.i[951,964] [2024-06-27 18:53:11,887 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:53:11,896 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:53:11,938 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/safe009_power.opt.i[951,964] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:53:12,045 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:53:12,090 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:53:12,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12 WrapperNode [2024-06-27 18:53:12,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:53:12,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:53:12,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:53:12,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:53:12,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,177 INFO L138 Inliner]: procedures = 175, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 213 [2024-06-27 18:53:12,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:53:12,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:53:12,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:53:12,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:53:12,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,195 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,227 INFO L175 MemorySlicer]: Split 32 memory accesses to 2 slices as follows [30, 2]. 94 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [1, 2]. The 6 writes are split as follows [6, 0]. [2024-06-27 18:53:12,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,269 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,274 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,289 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:53:12,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:53:12,295 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:53:12,295 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:53:12,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (1/1) ... [2024-06-27 18:53:12,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:53:12,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:53:12,406 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) [2024-06-27 18:53:12,421 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 [2024-06-27 18:53:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 18:53:12,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 18:53:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 18:53:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 18:53:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:53:12,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:53:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:53:12,458 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:53:12,458 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:53:12,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:53:12,459 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:53:12,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:53:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:53:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 18:53:12,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:53:12,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:53:12,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:53:12,462 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:53:12,600 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:53:12,602 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:53:13,108 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:53:13,109 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:53:13,512 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:53:13,512 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:53:13,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:53:13 BoogieIcfgContainer [2024-06-27 18:53:13,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:53:13,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:53:13,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:53:13,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:53:13,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:53:09" (1/4) ... [2024-06-27 18:53:13,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fde7f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:53:13, skipping insertion in model container [2024-06-27 18:53:13,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:53:11" (2/4) ... [2024-06-27 18:53:13,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fde7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:53:13, skipping insertion in model container [2024-06-27 18:53:13,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:53:12" (3/4) ... [2024-06-27 18:53:13,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fde7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:53:13, skipping insertion in model container [2024-06-27 18:53:13,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:53:13" (4/4) ... [2024-06-27 18:53:13,523 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_power.opt.i [2024-06-27 18:53:13,541 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:53:13,542 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:53:13,542 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:53:13,623 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:53:13,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:53:13,699 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 18:53:13,699 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:53:13,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 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. [2024-06-27 18:53:13,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:53:13,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 18:53:13,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:53:13,726 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;@35c88d78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:53:13,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:53:13,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:53:13,732 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:53:13,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:53:13,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:13,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:53:13,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:13,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:13,738 INFO L85 PathProgramCache]: Analyzing trace with hash 760423612, now seen corresponding path program 1 times [2024-06-27 18:53:13,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:13,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616209563] [2024-06-27 18:53:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:13,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:15,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:15,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616209563] [2024-06-27 18:53:15,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616209563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:15,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:15,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:53:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394079460] [2024-06-27 18:53:15,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:15,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:53:15,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:15,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:53:15,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:53:15,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:53:15,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:15,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:15,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:53:15,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:16,880 INFO L124 PetriNetUnfolderBase]: 2462/4134 cut-off events. [2024-06-27 18:53:16,881 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-27 18:53:16,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7811 conditions, 4134 events. 2462/4134 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 26800 event pairs, 1393 based on Foata normal form. 100/3751 useless extension candidates. Maximal degree in co-relation 7799. Up to 3596 conditions per place. [2024-06-27 18:53:16,908 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 44 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2024-06-27 18:53:16,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 237 flow [2024-06-27 18:53:16,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:53:16,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:53:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-06-27 18:53:16,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6808510638297872 [2024-06-27 18:53:16,921 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 96 transitions. [2024-06-27 18:53:16,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 237 flow [2024-06-27 18:53:16,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:53:16,927 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 136 flow [2024-06-27 18:53:16,928 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=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-06-27 18:53:16,931 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:53:16,932 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 136 flow [2024-06-27 18:53:16,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:16,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:16,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-27 18:53:16,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:53:16,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:16,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:16,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2098326025, now seen corresponding path program 1 times [2024-06-27 18:53:16,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:16,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725262161] [2024-06-27 18:53:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:16,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:16,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725262161] [2024-06-27 18:53:16,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725262161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:16,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:16,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:53:16,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190416233] [2024-06-27 18:53:16,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:16,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:53:16,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:53:16,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:53:16,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 18:53:16,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:16,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:16,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 18:53:16,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:17,653 INFO L124 PetriNetUnfolderBase]: 1426/2512 cut-off events. [2024-06-27 18:53:17,654 INFO L125 PetriNetUnfolderBase]: For 435/443 co-relation queries the response was YES. [2024-06-27 18:53:17,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5280 conditions, 2512 events. 1426/2512 cut-off events. For 435/443 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16032 event pairs, 859 based on Foata normal form. 0/2337 useless extension candidates. Maximal degree in co-relation 5268. Up to 1698 conditions per place. [2024-06-27 18:53:17,674 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 52 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-06-27 18:53:17,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 295 flow [2024-06-27 18:53:17,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:53:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:53:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-27 18:53:17,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7163120567375887 [2024-06-27 18:53:17,678 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 136 flow. Second operand 3 states and 101 transitions. [2024-06-27 18:53:17,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 295 flow [2024-06-27 18:53:17,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 69 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:53:17,684 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 128 flow [2024-06-27 18:53:17,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-27 18:53:17,687 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:53:17,687 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 128 flow [2024-06-27 18:53:17,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:17,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:17,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:17,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:53:17,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:17,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:17,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2123936555, now seen corresponding path program 1 times [2024-06-27 18:53:17,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:17,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334769848] [2024-06-27 18:53:17,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:17,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:20,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:20,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334769848] [2024-06-27 18:53:20,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334769848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:20,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:20,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:53:20,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310241269] [2024-06-27 18:53:20,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:20,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:53:20,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:20,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:53:20,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:53:20,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:53:20,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:20,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:20,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:53:20,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:21,085 INFO L124 PetriNetUnfolderBase]: 2456/4094 cut-off events. [2024-06-27 18:53:21,085 INFO L125 PetriNetUnfolderBase]: For 935/941 co-relation queries the response was YES. [2024-06-27 18:53:21,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8905 conditions, 4094 events. 2456/4094 cut-off events. For 935/941 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 24927 event pairs, 1201 based on Foata normal form. 7/3972 useless extension candidates. Maximal degree in co-relation 8892. Up to 3535 conditions per place. [2024-06-27 18:53:21,109 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 60 selfloop transitions, 9 changer transitions 1/80 dead transitions. [2024-06-27 18:53:21,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 80 transitions, 358 flow [2024-06-27 18:53:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:53:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:53:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-06-27 18:53:21,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436170212765957 [2024-06-27 18:53:21,115 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 128 flow. Second operand 4 states and 121 transitions. [2024-06-27 18:53:21,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 80 transitions, 358 flow [2024-06-27 18:53:21,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 80 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:53:21,119 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 198 flow [2024-06-27 18:53:21,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-06-27 18:53:21,121 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-27 18:53:21,121 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 198 flow [2024-06-27 18:53:21,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:21,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:21,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:21,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:53:21,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:21,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash -2018567236, now seen corresponding path program 1 times [2024-06-27 18:53:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:21,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376368647] [2024-06-27 18:53:21,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:24,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376368647] [2024-06-27 18:53:24,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376368647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:24,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:24,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:53:24,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752636259] [2024-06-27 18:53:24,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:24,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:53:24,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:24,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:53:24,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:53:24,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:53:24,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 198 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:24,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:24,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:53:24,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:24,974 INFO L124 PetriNetUnfolderBase]: 2212/3747 cut-off events. [2024-06-27 18:53:24,974 INFO L125 PetriNetUnfolderBase]: For 1594/1612 co-relation queries the response was YES. [2024-06-27 18:53:24,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8933 conditions, 3747 events. 2212/3747 cut-off events. For 1594/1612 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 22903 event pairs, 770 based on Foata normal form. 18/3636 useless extension candidates. Maximal degree in co-relation 8918. Up to 3126 conditions per place. [2024-06-27 18:53:24,998 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 66 selfloop transitions, 19 changer transitions 0/95 dead transitions. [2024-06-27 18:53:24,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 95 transitions, 488 flow [2024-06-27 18:53:24,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:53:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:53:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-27 18:53:25,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6212765957446809 [2024-06-27 18:53:25,000 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 198 flow. Second operand 5 states and 146 transitions. [2024-06-27 18:53:25,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 95 transitions, 488 flow [2024-06-27 18:53:25,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 95 transitions, 474 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:53:25,004 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 283 flow [2024-06-27 18:53:25,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=283, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2024-06-27 18:53:25,005 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-06-27 18:53:25,006 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 283 flow [2024-06-27 18:53:25,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:25,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:25,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:25,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:53:25,006 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:25,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:25,007 INFO L85 PathProgramCache]: Analyzing trace with hash 642480224, now seen corresponding path program 1 times [2024-06-27 18:53:25,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:25,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709028740] [2024-06-27 18:53:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:25,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:26,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709028740] [2024-06-27 18:53:26,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709028740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:26,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:26,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:53:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075091333] [2024-06-27 18:53:26,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:26,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:53:26,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:53:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:53:27,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 18:53:27,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:27,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:27,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 18:53:27,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:28,049 INFO L124 PetriNetUnfolderBase]: 1724/2921 cut-off events. [2024-06-27 18:53:28,049 INFO L125 PetriNetUnfolderBase]: For 2792/2792 co-relation queries the response was YES. [2024-06-27 18:53:28,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7840 conditions, 2921 events. 1724/2921 cut-off events. For 2792/2792 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17826 event pairs, 732 based on Foata normal form. 2/2834 useless extension candidates. Maximal degree in co-relation 7821. Up to 2513 conditions per place. [2024-06-27 18:53:28,076 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 65 selfloop transitions, 14 changer transitions 0/89 dead transitions. [2024-06-27 18:53:28,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 537 flow [2024-06-27 18:53:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:53:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:53:28,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-27 18:53:28,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.548936170212766 [2024-06-27 18:53:28,083 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 283 flow. Second operand 5 states and 129 transitions. [2024-06-27 18:53:28,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 537 flow [2024-06-27 18:53:28,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 89 transitions, 511 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 18:53:28,090 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 347 flow [2024-06-27 18:53:28,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2024-06-27 18:53:28,091 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2024-06-27 18:53:28,091 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 347 flow [2024-06-27 18:53:28,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:28,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:28,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:28,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:53:28,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:28,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:28,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1557947346, now seen corresponding path program 1 times [2024-06-27 18:53:28,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:28,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524045832] [2024-06-27 18:53:28,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:28,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:30,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:30,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524045832] [2024-06-27 18:53:30,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524045832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:30,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:30,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:53:30,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496830234] [2024-06-27 18:53:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:30,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:53:30,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:53:30,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:53:30,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:53:30,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 347 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:30,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:30,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:53:30,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:32,217 INFO L124 PetriNetUnfolderBase]: 2360/3958 cut-off events. [2024-06-27 18:53:32,218 INFO L125 PetriNetUnfolderBase]: For 5260/5260 co-relation queries the response was YES. [2024-06-27 18:53:32,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11116 conditions, 3958 events. 2360/3958 cut-off events. For 5260/5260 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 24254 event pairs, 835 based on Foata normal form. 15/3876 useless extension candidates. Maximal degree in co-relation 11093. Up to 2831 conditions per place. [2024-06-27 18:53:32,242 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 108 selfloop transitions, 12 changer transitions 0/129 dead transitions. [2024-06-27 18:53:32,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 129 transitions, 851 flow [2024-06-27 18:53:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:53:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:53:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 18:53:32,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709219858156028 [2024-06-27 18:53:32,244 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 347 flow. Second operand 6 states and 161 transitions. [2024-06-27 18:53:32,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 129 transitions, 851 flow [2024-06-27 18:53:32,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 129 transitions, 841 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 18:53:32,251 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 466 flow [2024-06-27 18:53:32,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=466, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2024-06-27 18:53:32,252 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-06-27 18:53:32,252 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 466 flow [2024-06-27 18:53:32,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:32,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:32,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:32,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:53:32,253 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:32,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash 730471435, now seen corresponding path program 1 times [2024-06-27 18:53:32,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:32,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848907312] [2024-06-27 18:53:32,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:32,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:35,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:35,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848907312] [2024-06-27 18:53:35,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848907312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:35,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:35,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:53:35,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919365180] [2024-06-27 18:53:35,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:35,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:53:35,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:53:35,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:53:35,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:53:35,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 466 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:35,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:35,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:53:35,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:36,020 INFO L124 PetriNetUnfolderBase]: 2396/4069 cut-off events. [2024-06-27 18:53:36,020 INFO L125 PetriNetUnfolderBase]: For 7822/7840 co-relation queries the response was YES. [2024-06-27 18:53:36,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12690 conditions, 4069 events. 2396/4069 cut-off events. For 7822/7840 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 25471 event pairs, 952 based on Foata normal form. 14/3958 useless extension candidates. Maximal degree in co-relation 12662. Up to 3429 conditions per place. [2024-06-27 18:53:36,046 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 93 selfloop transitions, 16 changer transitions 0/118 dead transitions. [2024-06-27 18:53:36,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 118 transitions, 837 flow [2024-06-27 18:53:36,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:53:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:53:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 18:53:36,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-27 18:53:36,048 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 466 flow. Second operand 6 states and 154 transitions. [2024-06-27 18:53:36,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 118 transitions, 837 flow [2024-06-27 18:53:36,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 828 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:53:36,062 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 568 flow [2024-06-27 18:53:36,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-06-27 18:53:36,063 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2024-06-27 18:53:36,063 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 568 flow [2024-06-27 18:53:36,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:36,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:36,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:36,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:53:36,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:36,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:36,064 INFO L85 PathProgramCache]: Analyzing trace with hash 529086975, now seen corresponding path program 1 times [2024-06-27 18:53:36,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:36,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512151018] [2024-06-27 18:53:36,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:36,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:38,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:38,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512151018] [2024-06-27 18:53:38,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512151018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:38,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:38,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:53:38,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094677698] [2024-06-27 18:53:38,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:38,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:53:38,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:38,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:53:38,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:53:38,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:53:38,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 568 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:38,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:38,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:53:38,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:40,423 INFO L124 PetriNetUnfolderBase]: 2966/4855 cut-off events. [2024-06-27 18:53:40,423 INFO L125 PetriNetUnfolderBase]: For 12764/12782 co-relation queries the response was YES. [2024-06-27 18:53:40,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15974 conditions, 4855 events. 2966/4855 cut-off events. For 12764/12782 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 30065 event pairs, 685 based on Foata normal form. 27/4806 useless extension candidates. Maximal degree in co-relation 15943. Up to 3039 conditions per place. [2024-06-27 18:53:40,454 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 110 selfloop transitions, 30 changer transitions 0/149 dead transitions. [2024-06-27 18:53:40,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 149 transitions, 1096 flow [2024-06-27 18:53:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:53:40,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:53:40,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-27 18:53:40,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 18:53:40,456 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 568 flow. Second operand 8 states and 208 transitions. [2024-06-27 18:53:40,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 149 transitions, 1096 flow [2024-06-27 18:53:40,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 149 transitions, 1066 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 18:53:40,471 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 700 flow [2024-06-27 18:53:40,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=700, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2024-06-27 18:53:40,472 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2024-06-27 18:53:40,472 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 700 flow [2024-06-27 18:53:40,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:40,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:40,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:40,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:53:40,473 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:40,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash 506743539, now seen corresponding path program 2 times [2024-06-27 18:53:40,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:40,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091290054] [2024-06-27 18:53:40,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:40,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:42,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:42,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091290054] [2024-06-27 18:53:42,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091290054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:42,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:42,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:53:42,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757178274] [2024-06-27 18:53:42,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:42,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:53:42,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:42,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:53:42,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:53:42,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:53:42,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 700 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:42,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:42,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:53:42,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:43,778 INFO L124 PetriNetUnfolderBase]: 2969/5014 cut-off events. [2024-06-27 18:53:43,779 INFO L125 PetriNetUnfolderBase]: For 18112/18130 co-relation queries the response was YES. [2024-06-27 18:53:43,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18245 conditions, 5014 events. 2969/5014 cut-off events. For 18112/18130 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 32355 event pairs, 1209 based on Foata normal form. 14/4872 useless extension candidates. Maximal degree in co-relation 18210. Up to 4243 conditions per place. [2024-06-27 18:53:43,810 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 105 selfloop transitions, 15 changer transitions 0/129 dead transitions. [2024-06-27 18:53:43,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 129 transitions, 1113 flow [2024-06-27 18:53:43,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:53:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:53:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 18:53:43,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-27 18:53:43,812 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 700 flow. Second operand 6 states and 149 transitions. [2024-06-27 18:53:43,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 129 transitions, 1113 flow [2024-06-27 18:53:43,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 129 transitions, 1060 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 18:53:43,835 INFO L231 Difference]: Finished difference. Result has 88 places, 96 transitions, 791 flow [2024-06-27 18:53:43,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=791, PETRI_PLACES=88, PETRI_TRANSITIONS=96} [2024-06-27 18:53:43,836 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2024-06-27 18:53:43,837 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 96 transitions, 791 flow [2024-06-27 18:53:43,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:43,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:43,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:43,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:53:43,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:43,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:43,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1756247981, now seen corresponding path program 2 times [2024-06-27 18:53:43,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:43,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474679178] [2024-06-27 18:53:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:43,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:45,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:45,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:45,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474679178] [2024-06-27 18:53:45,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474679178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:45,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:45,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:53:45,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273072428] [2024-06-27 18:53:45,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:45,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:53:45,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:45,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:53:45,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:53:46,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:53:46,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 96 transitions, 791 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:46,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:46,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:53:46,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:47,790 INFO L124 PetriNetUnfolderBase]: 3307/5541 cut-off events. [2024-06-27 18:53:47,790 INFO L125 PetriNetUnfolderBase]: For 19346/19364 co-relation queries the response was YES. [2024-06-27 18:53:47,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20068 conditions, 5541 events. 3307/5541 cut-off events. For 19346/19364 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 36182 event pairs, 890 based on Foata normal form. 27/5415 useless extension candidates. Maximal degree in co-relation 20030. Up to 2535 conditions per place. [2024-06-27 18:53:47,823 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 124 selfloop transitions, 34 changer transitions 0/167 dead transitions. [2024-06-27 18:53:47,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 167 transitions, 1397 flow [2024-06-27 18:53:47,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:53:47,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:53:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-27 18:53:47,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866261398176292 [2024-06-27 18:53:47,826 INFO L175 Difference]: Start difference. First operand has 88 places, 96 transitions, 791 flow. Second operand 7 states and 193 transitions. [2024-06-27 18:53:47,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 167 transitions, 1397 flow [2024-06-27 18:53:47,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 167 transitions, 1350 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:53:47,853 INFO L231 Difference]: Finished difference. Result has 94 places, 102 transitions, 931 flow [2024-06-27 18:53:47,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=931, PETRI_PLACES=94, PETRI_TRANSITIONS=102} [2024-06-27 18:53:47,854 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 41 predicate places. [2024-06-27 18:53:47,854 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 102 transitions, 931 flow [2024-06-27 18:53:47,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:47,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:47,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:53:47,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:47,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1474626720, now seen corresponding path program 1 times [2024-06-27 18:53:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650805770] [2024-06-27 18:53:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:47,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:51,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:51,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:51,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650805770] [2024-06-27 18:53:51,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650805770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:51,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:51,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:53:51,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229848295] [2024-06-27 18:53:51,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:51,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:53:51,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:51,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:53:51,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:53:51,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:53:51,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 931 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:51,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:51,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:53:51,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:53,131 INFO L124 PetriNetUnfolderBase]: 3383/5708 cut-off events. [2024-06-27 18:53:53,131 INFO L125 PetriNetUnfolderBase]: For 28088/28146 co-relation queries the response was YES. [2024-06-27 18:53:53,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22667 conditions, 5708 events. 3383/5708 cut-off events. For 28088/28146 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 37912 event pairs, 1174 based on Foata normal form. 36/5563 useless extension candidates. Maximal degree in co-relation 22626. Up to 4614 conditions per place. [2024-06-27 18:53:53,175 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 128 selfloop transitions, 28 changer transitions 0/165 dead transitions. [2024-06-27 18:53:53,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 165 transitions, 1532 flow [2024-06-27 18:53:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:53:53,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:53:53,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-27 18:53:53,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653495440729484 [2024-06-27 18:53:53,177 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 931 flow. Second operand 7 states and 186 transitions. [2024-06-27 18:53:53,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 165 transitions, 1532 flow [2024-06-27 18:53:53,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 165 transitions, 1477 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-27 18:53:53,228 INFO L231 Difference]: Finished difference. Result has 100 places, 109 transitions, 1054 flow [2024-06-27 18:53:53,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1054, PETRI_PLACES=100, PETRI_TRANSITIONS=109} [2024-06-27 18:53:53,229 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 47 predicate places. [2024-06-27 18:53:53,229 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 109 transitions, 1054 flow [2024-06-27 18:53:53,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:53,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:53,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:53,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:53:53,230 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:53,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:53,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1474536355, now seen corresponding path program 1 times [2024-06-27 18:53:53,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:53,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877374801] [2024-06-27 18:53:53,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:53,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:56,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:56,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877374801] [2024-06-27 18:53:56,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877374801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:56,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:56,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:53:56,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461303883] [2024-06-27 18:53:56,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:56,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:53:56,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:56,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:53:56,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:53:56,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:53:56,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 109 transitions, 1054 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:56,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:56,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:53:56,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:58,228 INFO L124 PetriNetUnfolderBase]: 4296/7258 cut-off events. [2024-06-27 18:53:58,228 INFO L125 PetriNetUnfolderBase]: For 35019/35077 co-relation queries the response was YES. [2024-06-27 18:53:58,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27767 conditions, 7258 events. 4296/7258 cut-off events. For 35019/35077 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 50376 event pairs, 1119 based on Foata normal form. 47/7112 useless extension candidates. Maximal degree in co-relation 27723. Up to 4993 conditions per place. [2024-06-27 18:53:58,287 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 166 selfloop transitions, 32 changer transitions 0/207 dead transitions. [2024-06-27 18:53:58,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 207 transitions, 1996 flow [2024-06-27 18:53:58,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:53:58,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:53:58,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-06-27 18:53:58,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.598404255319149 [2024-06-27 18:53:58,291 INFO L175 Difference]: Start difference. First operand has 100 places, 109 transitions, 1054 flow. Second operand 8 states and 225 transitions. [2024-06-27 18:53:58,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 207 transitions, 1996 flow [2024-06-27 18:53:58,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 207 transitions, 1950 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 18:53:58,357 INFO L231 Difference]: Finished difference. Result has 108 places, 124 transitions, 1275 flow [2024-06-27 18:53:58,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1275, PETRI_PLACES=108, PETRI_TRANSITIONS=124} [2024-06-27 18:53:58,360 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2024-06-27 18:53:58,360 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 124 transitions, 1275 flow [2024-06-27 18:53:58,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:58,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:58,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:58,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:53:58,361 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:53:58,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:58,362 INFO L85 PathProgramCache]: Analyzing trace with hash -754939555, now seen corresponding path program 2 times [2024-06-27 18:53:58,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:58,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881094124] [2024-06-27 18:53:58,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:58,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:00,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:00,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881094124] [2024-06-27 18:54:00,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881094124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:00,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:00,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:00,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161612633] [2024-06-27 18:54:00,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:00,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:00,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:00,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:00,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:00,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:54:00,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 124 transitions, 1275 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:00,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:00,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:54:00,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:02,822 INFO L124 PetriNetUnfolderBase]: 4548/7676 cut-off events. [2024-06-27 18:54:02,823 INFO L125 PetriNetUnfolderBase]: For 45567/45585 co-relation queries the response was YES. [2024-06-27 18:54:02,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33028 conditions, 7676 events. 4548/7676 cut-off events. For 45567/45585 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 53749 event pairs, 1294 based on Foata normal form. 27/7500 useless extension candidates. Maximal degree in co-relation 32979. Up to 5765 conditions per place. [2024-06-27 18:54:02,872 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 165 selfloop transitions, 31 changer transitions 0/205 dead transitions. [2024-06-27 18:54:02,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 205 transitions, 2137 flow [2024-06-27 18:54:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:54:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:54:02,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 18:54:02,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 18:54:02,875 INFO L175 Difference]: Start difference. First operand has 108 places, 124 transitions, 1275 flow. Second operand 9 states and 234 transitions. [2024-06-27 18:54:02,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 205 transitions, 2137 flow [2024-06-27 18:54:02,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 205 transitions, 2090 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:02,947 INFO L231 Difference]: Finished difference. Result has 117 places, 132 transitions, 1437 flow [2024-06-27 18:54:02,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1437, PETRI_PLACES=117, PETRI_TRANSITIONS=132} [2024-06-27 18:54:02,948 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-06-27 18:54:02,948 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 132 transitions, 1437 flow [2024-06-27 18:54:02,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:02,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:02,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:02,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:54:02,949 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:02,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:02,949 INFO L85 PathProgramCache]: Analyzing trace with hash -778176690, now seen corresponding path program 2 times [2024-06-27 18:54:02,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:02,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693048524] [2024-06-27 18:54:02,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:02,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:05,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:05,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693048524] [2024-06-27 18:54:05,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693048524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:05,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:05,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:05,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404452372] [2024-06-27 18:54:05,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:05,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:05,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:05,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:05,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:05,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:54:05,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 132 transitions, 1437 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:05,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:05,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:54:05,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:07,607 INFO L124 PetriNetUnfolderBase]: 4559/7724 cut-off events. [2024-06-27 18:54:07,607 INFO L125 PetriNetUnfolderBase]: For 47749/47767 co-relation queries the response was YES. [2024-06-27 18:54:07,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33798 conditions, 7724 events. 4559/7724 cut-off events. For 47749/47767 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 54245 event pairs, 1524 based on Foata normal form. 16/7522 useless extension candidates. Maximal degree in co-relation 33745. Up to 6501 conditions per place. [2024-06-27 18:54:07,655 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 151 selfloop transitions, 35 changer transitions 0/195 dead transitions. [2024-06-27 18:54:07,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 195 transitions, 2216 flow [2024-06-27 18:54:07,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:54:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:54:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 18:54:07,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:54:07,657 INFO L175 Difference]: Start difference. First operand has 117 places, 132 transitions, 1437 flow. Second operand 8 states and 192 transitions. [2024-06-27 18:54:07,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 195 transitions, 2216 flow [2024-06-27 18:54:07,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 195 transitions, 2132 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 18:54:07,715 INFO L231 Difference]: Finished difference. Result has 122 places, 152 transitions, 1754 flow [2024-06-27 18:54:07,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1754, PETRI_PLACES=122, PETRI_TRANSITIONS=152} [2024-06-27 18:54:07,716 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 69 predicate places. [2024-06-27 18:54:07,716 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 152 transitions, 1754 flow [2024-06-27 18:54:07,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:07,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:07,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:07,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:54:07,717 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:07,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:07,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1470811705, now seen corresponding path program 3 times [2024-06-27 18:54:07,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:07,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542458788] [2024-06-27 18:54:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:07,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:09,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:09,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542458788] [2024-06-27 18:54:09,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542458788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:09,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:09,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:09,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511095065] [2024-06-27 18:54:09,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:09,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:09,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:09,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:09,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:09,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:54:09,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 152 transitions, 1754 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:09,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:09,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:54:09,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:12,229 INFO L124 PetriNetUnfolderBase]: 4717/7980 cut-off events. [2024-06-27 18:54:12,229 INFO L125 PetriNetUnfolderBase]: For 49552/49570 co-relation queries the response was YES. [2024-06-27 18:54:12,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34908 conditions, 7980 events. 4717/7980 cut-off events. For 49552/49570 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 56279 event pairs, 1506 based on Foata normal form. 27/7782 useless extension candidates. Maximal degree in co-relation 34852. Up to 6431 conditions per place. [2024-06-27 18:54:12,290 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 173 selfloop transitions, 34 changer transitions 0/216 dead transitions. [2024-06-27 18:54:12,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 216 transitions, 2486 flow [2024-06-27 18:54:12,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:54:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:54:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 18:54:12,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 18:54:12,294 INFO L175 Difference]: Start difference. First operand has 122 places, 152 transitions, 1754 flow. Second operand 9 states and 223 transitions. [2024-06-27 18:54:12,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 216 transitions, 2486 flow [2024-06-27 18:54:12,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 216 transitions, 2325 flow, removed 73 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:12,400 INFO L231 Difference]: Finished difference. Result has 130 places, 161 transitions, 1827 flow [2024-06-27 18:54:12,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1827, PETRI_PLACES=130, PETRI_TRANSITIONS=161} [2024-06-27 18:54:12,401 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-06-27 18:54:12,401 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 161 transitions, 1827 flow [2024-06-27 18:54:12,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:12,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:12,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:12,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:54:12,402 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:12,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1483055563, now seen corresponding path program 4 times [2024-06-27 18:54:12,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:12,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302830705] [2024-06-27 18:54:12,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:12,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:14,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:14,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302830705] [2024-06-27 18:54:14,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302830705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:14,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:14,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:54:14,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970252797] [2024-06-27 18:54:14,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:14,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:54:14,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:14,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:54:14,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:54:15,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:54:15,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 161 transitions, 1827 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:15,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:15,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:54:15,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:17,460 INFO L124 PetriNetUnfolderBase]: 5081/8600 cut-off events. [2024-06-27 18:54:17,460 INFO L125 PetriNetUnfolderBase]: For 59529/59547 co-relation queries the response was YES. [2024-06-27 18:54:17,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38582 conditions, 8600 events. 5081/8600 cut-off events. For 59529/59547 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 61300 event pairs, 1405 based on Foata normal form. 27/8379 useless extension candidates. Maximal degree in co-relation 38522. Up to 6659 conditions per place. [2024-06-27 18:54:17,520 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 204 selfloop transitions, 68 changer transitions 0/281 dead transitions. [2024-06-27 18:54:17,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 281 transitions, 3134 flow [2024-06-27 18:54:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:54:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:54:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 281 transitions. [2024-06-27 18:54:17,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435203094777563 [2024-06-27 18:54:17,522 INFO L175 Difference]: Start difference. First operand has 130 places, 161 transitions, 1827 flow. Second operand 11 states and 281 transitions. [2024-06-27 18:54:17,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 281 transitions, 3134 flow [2024-06-27 18:54:17,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 281 transitions, 3013 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:54:17,615 INFO L231 Difference]: Finished difference. Result has 141 places, 204 transitions, 2383 flow [2024-06-27 18:54:17,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2383, PETRI_PLACES=141, PETRI_TRANSITIONS=204} [2024-06-27 18:54:17,616 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 88 predicate places. [2024-06-27 18:54:17,616 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 204 transitions, 2383 flow [2024-06-27 18:54:17,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:17,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:17,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:17,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:54:17,617 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:17,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:17,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2059304582, now seen corresponding path program 1 times [2024-06-27 18:54:17,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:17,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622888482] [2024-06-27 18:54:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:17,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:18,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:18,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622888482] [2024-06-27 18:54:18,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622888482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:18,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:18,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:54:18,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677367683] [2024-06-27 18:54:18,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:18,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:54:18,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:18,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:54:18,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:54:18,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:54:18,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 204 transitions, 2383 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:18,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:18,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:54:18,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:20,412 INFO L124 PetriNetUnfolderBase]: 5073/8586 cut-off events. [2024-06-27 18:54:20,412 INFO L125 PetriNetUnfolderBase]: For 64120/64120 co-relation queries the response was YES. [2024-06-27 18:54:20,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41357 conditions, 8586 events. 5073/8586 cut-off events. For 64120/64120 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 61142 event pairs, 1399 based on Foata normal form. 3/8339 useless extension candidates. Maximal degree in co-relation 41290. Up to 7344 conditions per place. [2024-06-27 18:54:20,483 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 211 selfloop transitions, 13 changer transitions 0/233 dead transitions. [2024-06-27 18:54:20,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 233 transitions, 2999 flow [2024-06-27 18:54:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:54:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:54:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 18:54:20,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2024-06-27 18:54:20,485 INFO L175 Difference]: Start difference. First operand has 141 places, 204 transitions, 2383 flow. Second operand 5 states and 119 transitions. [2024-06-27 18:54:20,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 233 transitions, 2999 flow [2024-06-27 18:54:20,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 233 transitions, 2891 flow, removed 53 selfloop flow, removed 1 redundant places. [2024-06-27 18:54:20,611 INFO L231 Difference]: Finished difference. Result has 146 places, 211 transitions, 2413 flow [2024-06-27 18:54:20,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2413, PETRI_PLACES=146, PETRI_TRANSITIONS=211} [2024-06-27 18:54:20,612 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2024-06-27 18:54:20,612 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 211 transitions, 2413 flow [2024-06-27 18:54:20,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:20,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:20,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:20,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:54:20,612 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:20,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:20,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1567999472, now seen corresponding path program 1 times [2024-06-27 18:54:20,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:20,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700919706] [2024-06-27 18:54:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:20,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:23,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:23,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:23,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700919706] [2024-06-27 18:54:23,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700919706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:23,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:23,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:23,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811241934] [2024-06-27 18:54:23,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:23,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:23,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:23,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:23,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:23,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:54:23,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 211 transitions, 2413 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:23,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:23,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:54:23,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:26,499 INFO L124 PetriNetUnfolderBase]: 6911/11862 cut-off events. [2024-06-27 18:54:26,499 INFO L125 PetriNetUnfolderBase]: For 97851/97928 co-relation queries the response was YES. [2024-06-27 18:54:26,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54691 conditions, 11862 events. 6911/11862 cut-off events. For 97851/97928 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 91611 event pairs, 1391 based on Foata normal form. 75/11660 useless extension candidates. Maximal degree in co-relation 54620. Up to 4309 conditions per place. [2024-06-27 18:54:26,605 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 254 selfloop transitions, 65 changer transitions 0/328 dead transitions. [2024-06-27 18:54:26,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 328 transitions, 3840 flow [2024-06-27 18:54:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:54:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:54:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 263 transitions. [2024-06-27 18:54:26,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217494089834515 [2024-06-27 18:54:26,607 INFO L175 Difference]: Start difference. First operand has 146 places, 211 transitions, 2413 flow. Second operand 9 states and 263 transitions. [2024-06-27 18:54:26,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 328 transitions, 3840 flow [2024-06-27 18:54:26,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 328 transitions, 3808 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 18:54:26,776 INFO L231 Difference]: Finished difference. Result has 155 places, 217 transitions, 2669 flow [2024-06-27 18:54:26,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2381, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2669, PETRI_PLACES=155, PETRI_TRANSITIONS=217} [2024-06-27 18:54:26,777 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 102 predicate places. [2024-06-27 18:54:26,777 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 217 transitions, 2669 flow [2024-06-27 18:54:26,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:26,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:26,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:26,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:54:26,778 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:26,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:26,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1534015286, now seen corresponding path program 2 times [2024-06-27 18:54:26,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:26,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139091126] [2024-06-27 18:54:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:30,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:30,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139091126] [2024-06-27 18:54:30,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139091126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:30,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:30,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:30,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032120433] [2024-06-27 18:54:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:30,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:30,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:30,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:54:30,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 217 transitions, 2669 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:30,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:30,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:54:30,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:33,203 INFO L124 PetriNetUnfolderBase]: 7395/12919 cut-off events. [2024-06-27 18:54:33,203 INFO L125 PetriNetUnfolderBase]: For 122431/122449 co-relation queries the response was YES. [2024-06-27 18:54:33,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61012 conditions, 12919 events. 7395/12919 cut-off events. For 122431/122449 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 103399 event pairs, 2193 based on Foata normal form. 42/12606 useless extension candidates. Maximal degree in co-relation 60937. Up to 9611 conditions per place. [2024-06-27 18:54:33,314 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 270 selfloop transitions, 29 changer transitions 0/308 dead transitions. [2024-06-27 18:54:33,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 308 transitions, 3759 flow [2024-06-27 18:54:33,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:54:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:54:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-06-27 18:54:33,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5721040189125296 [2024-06-27 18:54:33,316 INFO L175 Difference]: Start difference. First operand has 155 places, 217 transitions, 2669 flow. Second operand 9 states and 242 transitions. [2024-06-27 18:54:33,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 308 transitions, 3759 flow [2024-06-27 18:54:33,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 308 transitions, 3667 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 18:54:33,528 INFO L231 Difference]: Finished difference. Result has 163 places, 226 transitions, 2795 flow [2024-06-27 18:54:33,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2795, PETRI_PLACES=163, PETRI_TRANSITIONS=226} [2024-06-27 18:54:33,528 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 110 predicate places. [2024-06-27 18:54:33,529 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 226 transitions, 2795 flow [2024-06-27 18:54:33,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:33,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:33,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:33,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:54:33,529 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:33,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:33,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1534010636, now seen corresponding path program 3 times [2024-06-27 18:54:33,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:33,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478072109] [2024-06-27 18:54:33,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:33,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:37,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:37,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478072109] [2024-06-27 18:54:37,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478072109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:37,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:37,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:37,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173337828] [2024-06-27 18:54:37,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:37,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:37,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:37,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:37,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:37,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:54:37,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 226 transitions, 2795 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:37,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:37,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:54:37,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:41,176 INFO L124 PetriNetUnfolderBase]: 8172/14323 cut-off events. [2024-06-27 18:54:41,176 INFO L125 PetriNetUnfolderBase]: For 135219/135237 co-relation queries the response was YES. [2024-06-27 18:54:41,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67193 conditions, 14323 events. 8172/14323 cut-off events. For 135219/135237 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 117767 event pairs, 2511 based on Foata normal form. 42/13986 useless extension candidates. Maximal degree in co-relation 67114. Up to 9197 conditions per place. [2024-06-27 18:54:41,299 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 282 selfloop transitions, 36 changer transitions 0/327 dead transitions. [2024-06-27 18:54:41,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 327 transitions, 3968 flow [2024-06-27 18:54:41,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:54:41,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:54:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-06-27 18:54:41,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808510638297872 [2024-06-27 18:54:41,301 INFO L175 Difference]: Start difference. First operand has 163 places, 226 transitions, 2795 flow. Second operand 10 states and 273 transitions. [2024-06-27 18:54:41,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 327 transitions, 3968 flow [2024-06-27 18:54:41,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 327 transitions, 3849 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 18:54:41,808 INFO L231 Difference]: Finished difference. Result has 169 places, 228 transitions, 2824 flow [2024-06-27 18:54:41,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2824, PETRI_PLACES=169, PETRI_TRANSITIONS=228} [2024-06-27 18:54:41,808 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-06-27 18:54:41,809 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 228 transitions, 2824 flow [2024-06-27 18:54:41,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:41,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:41,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:41,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:54:41,809 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:41,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:41,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1649486132, now seen corresponding path program 1 times [2024-06-27 18:54:41,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:41,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645678541] [2024-06-27 18:54:41,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:41,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:44,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:44,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645678541] [2024-06-27 18:54:44,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645678541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:44,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:44,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:44,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640378487] [2024-06-27 18:54:44,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:44,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:44,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:44,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:44,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:44,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:54:44,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 228 transitions, 2824 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:44,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:44,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:54:44,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:48,325 INFO L124 PetriNetUnfolderBase]: 8339/14562 cut-off events. [2024-06-27 18:54:48,326 INFO L125 PetriNetUnfolderBase]: For 142013/142031 co-relation queries the response was YES. [2024-06-27 18:54:48,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68455 conditions, 14562 events. 8339/14562 cut-off events. For 142013/142031 co-relation queries the response was YES. Maximal size of possible extension queue 844. Compared 119311 event pairs, 2914 based on Foata normal form. 24/14189 useless extension candidates. Maximal degree in co-relation 68375. Up to 10624 conditions per place. [2024-06-27 18:54:48,464 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 239 selfloop transitions, 60 changer transitions 0/308 dead transitions. [2024-06-27 18:54:48,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 308 transitions, 3854 flow [2024-06-27 18:54:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:54:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:54:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 18:54:48,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2024-06-27 18:54:48,465 INFO L175 Difference]: Start difference. First operand has 169 places, 228 transitions, 2824 flow. Second operand 9 states and 237 transitions. [2024-06-27 18:54:48,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 308 transitions, 3854 flow [2024-06-27 18:54:48,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 308 transitions, 3744 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 18:54:48,946 INFO L231 Difference]: Finished difference. Result has 171 places, 230 transitions, 2909 flow [2024-06-27 18:54:48,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2720, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2909, PETRI_PLACES=171, PETRI_TRANSITIONS=230} [2024-06-27 18:54:48,947 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 118 predicate places. [2024-06-27 18:54:48,947 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 230 transitions, 2909 flow [2024-06-27 18:54:48,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:48,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:48,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:48,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:54:48,948 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:48,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:48,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1649306456, now seen corresponding path program 4 times [2024-06-27 18:54:48,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:48,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923005501] [2024-06-27 18:54:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:48,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:52,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:52,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923005501] [2024-06-27 18:54:52,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923005501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:52,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:52,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:52,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469052523] [2024-06-27 18:54:52,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:52,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:52,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:52,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:52,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:52,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:54:52,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 230 transitions, 2909 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:52,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:52,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:54:52,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:56,646 INFO L124 PetriNetUnfolderBase]: 8726/15311 cut-off events. [2024-06-27 18:54:56,647 INFO L125 PetriNetUnfolderBase]: For 148470/148488 co-relation queries the response was YES. [2024-06-27 18:54:56,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71538 conditions, 15311 events. 8726/15311 cut-off events. For 148470/148488 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 127511 event pairs, 3524 based on Foata normal form. 42/14968 useless extension candidates. Maximal degree in co-relation 71457. Up to 11333 conditions per place. [2024-06-27 18:54:56,806 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 264 selfloop transitions, 48 changer transitions 0/321 dead transitions. [2024-06-27 18:54:56,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 321 transitions, 3990 flow [2024-06-27 18:54:56,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:54:56,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:54:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-27 18:54:56,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574468085106383 [2024-06-27 18:54:56,807 INFO L175 Difference]: Start difference. First operand has 171 places, 230 transitions, 2909 flow. Second operand 10 states and 262 transitions. [2024-06-27 18:54:56,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 321 transitions, 3990 flow [2024-06-27 18:54:57,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 321 transitions, 3850 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:54:57,124 INFO L231 Difference]: Finished difference. Result has 174 places, 232 transitions, 2930 flow [2024-06-27 18:54:57,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2769, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2930, PETRI_PLACES=174, PETRI_TRANSITIONS=232} [2024-06-27 18:54:57,124 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-06-27 18:54:57,124 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 232 transitions, 2930 flow [2024-06-27 18:54:57,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:57,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:54:57,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:54:57,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:54:57,125 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:54:57,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:54:57,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1649479436, now seen corresponding path program 5 times [2024-06-27 18:54:57,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:54:57,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8120128] [2024-06-27 18:54:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:54:57,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:54:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:54:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:54:59,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:54:59,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8120128] [2024-06-27 18:54:59,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8120128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:54:59,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:54:59,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:54:59,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912256822] [2024-06-27 18:54:59,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:54:59,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:54:59,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:54:59,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:54:59,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:54:59,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:54:59,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 232 transitions, 2930 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:54:59,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:54:59,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:54:59,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:04,650 INFO L124 PetriNetUnfolderBase]: 9979/17426 cut-off events. [2024-06-27 18:55:04,650 INFO L125 PetriNetUnfolderBase]: For 181227/181245 co-relation queries the response was YES. [2024-06-27 18:55:04,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82573 conditions, 17426 events. 9979/17426 cut-off events. For 181227/181245 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 146754 event pairs, 3527 based on Foata normal form. 42/17051 useless extension candidates. Maximal degree in co-relation 82491. Up to 12439 conditions per place. [2024-06-27 18:55:04,821 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 274 selfloop transitions, 93 changer transitions 0/376 dead transitions. [2024-06-27 18:55:04,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 376 transitions, 4826 flow [2024-06-27 18:55:04,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:55:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:55:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 312 transitions. [2024-06-27 18:55:04,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-27 18:55:04,823 INFO L175 Difference]: Start difference. First operand has 174 places, 232 transitions, 2930 flow. Second operand 12 states and 312 transitions. [2024-06-27 18:55:04,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 376 transitions, 4826 flow [2024-06-27 18:55:05,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 376 transitions, 4670 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 18:55:05,327 INFO L231 Difference]: Finished difference. Result has 180 places, 277 transitions, 3790 flow [2024-06-27 18:55:05,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3790, PETRI_PLACES=180, PETRI_TRANSITIONS=277} [2024-06-27 18:55:05,327 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 127 predicate places. [2024-06-27 18:55:05,327 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 277 transitions, 3790 flow [2024-06-27 18:55:05,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:05,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:05,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:05,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:55:05,328 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:05,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:05,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1649301806, now seen corresponding path program 6 times [2024-06-27 18:55:05,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:05,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319813841] [2024-06-27 18:55:05,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:05,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:08,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:08,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319813841] [2024-06-27 18:55:08,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319813841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:08,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:08,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:08,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687896806] [2024-06-27 18:55:08,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:08,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:08,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:08,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:08,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:08,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:55:08,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 277 transitions, 3790 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:08,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:08,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:55:08,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:13,382 INFO L124 PetriNetUnfolderBase]: 10868/19130 cut-off events. [2024-06-27 18:55:13,382 INFO L125 PetriNetUnfolderBase]: For 219076/219094 co-relation queries the response was YES. [2024-06-27 18:55:13,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95856 conditions, 19130 events. 10868/19130 cut-off events. For 219076/219094 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 165477 event pairs, 3512 based on Foata normal form. 42/18695 useless extension candidates. Maximal degree in co-relation 95771. Up to 11628 conditions per place. [2024-06-27 18:55:13,585 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 335 selfloop transitions, 87 changer transitions 0/431 dead transitions. [2024-06-27 18:55:13,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 431 transitions, 6198 flow [2024-06-27 18:55:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:55:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:55:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 294 transitions. [2024-06-27 18:55:13,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686653771760155 [2024-06-27 18:55:13,587 INFO L175 Difference]: Start difference. First operand has 180 places, 277 transitions, 3790 flow. Second operand 11 states and 294 transitions. [2024-06-27 18:55:13,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 431 transitions, 6198 flow [2024-06-27 18:55:14,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 431 transitions, 5896 flow, removed 127 selfloop flow, removed 6 redundant places. [2024-06-27 18:55:14,325 INFO L231 Difference]: Finished difference. Result has 188 places, 316 transitions, 4528 flow [2024-06-27 18:55:14,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3580, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4528, PETRI_PLACES=188, PETRI_TRANSITIONS=316} [2024-06-27 18:55:14,326 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 135 predicate places. [2024-06-27 18:55:14,326 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 316 transitions, 4528 flow [2024-06-27 18:55:14,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:14,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:14,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:14,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:55:14,327 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:14,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:14,327 INFO L85 PathProgramCache]: Analyzing trace with hash -167507262, now seen corresponding path program 2 times [2024-06-27 18:55:14,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:14,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245752314] [2024-06-27 18:55:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:14,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:17,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:17,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245752314] [2024-06-27 18:55:17,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245752314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:17,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:17,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086131050] [2024-06-27 18:55:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:17,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:17,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:17,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:55:17,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 316 transitions, 4528 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:17,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:17,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:55:17,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:55:22,478 INFO L124 PetriNetUnfolderBase]: 11035/19195 cut-off events. [2024-06-27 18:55:22,478 INFO L125 PetriNetUnfolderBase]: For 241616/241634 co-relation queries the response was YES. [2024-06-27 18:55:22,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101437 conditions, 19195 events. 11035/19195 cut-off events. For 241616/241634 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 164601 event pairs, 3410 based on Foata normal form. 24/18811 useless extension candidates. Maximal degree in co-relation 101346. Up to 13312 conditions per place. [2024-06-27 18:55:22,674 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 327 selfloop transitions, 71 changer transitions 0/407 dead transitions. [2024-06-27 18:55:22,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 407 transitions, 6013 flow [2024-06-27 18:55:22,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:55:22,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:55:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-06-27 18:55:22,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904255319148937 [2024-06-27 18:55:22,676 INFO L175 Difference]: Start difference. First operand has 188 places, 316 transitions, 4528 flow. Second operand 8 states and 222 transitions. [2024-06-27 18:55:22,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 407 transitions, 6013 flow [2024-06-27 18:55:23,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 407 transitions, 5823 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-27 18:55:23,440 INFO L231 Difference]: Finished difference. Result has 192 places, 318 transitions, 4568 flow [2024-06-27 18:55:23,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4354, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4568, PETRI_PLACES=192, PETRI_TRANSITIONS=318} [2024-06-27 18:55:23,441 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-06-27 18:55:23,441 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 318 transitions, 4568 flow [2024-06-27 18:55:23,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:23,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:55:23,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:55:23,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:55:23,441 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:55:23,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:55:23,442 INFO L85 PathProgramCache]: Analyzing trace with hash -167773428, now seen corresponding path program 7 times [2024-06-27 18:55:23,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:55:23,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462098352] [2024-06-27 18:55:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:55:23,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:55:23,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:55:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:55:26,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:55:26,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462098352] [2024-06-27 18:55:26,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462098352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:55:26,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:55:26,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:55:26,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415776429] [2024-06-27 18:55:26,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:55:26,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:55:26,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:55:26,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:55:26,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:55:26,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:55:26,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 318 transitions, 4568 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:55:26,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:55:26,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:55:26,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand