./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe031_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe031_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe031_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:12:10,463 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:12:10,502 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:12:10,505 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:12:10,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:12:10,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:12:10,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:12:10,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:12:10,520 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:12:10,521 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:12:10,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:12:10,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:12:10,522 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:12:10,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:12:10,522 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:12:10,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:12:10,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:12:10,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:12:10,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:12:10,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:12:10,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:12:10,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:12:10,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:12:10,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:12:10,525 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:12:10,525 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:12:10,525 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:12:10,525 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:12:10,526 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:12:10,526 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:12:10,526 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:12:10,526 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:12:10,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:12:10,527 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:12:10,527 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:12:10,527 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:12:10,527 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:12:10,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:12:10,527 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:12:10,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:12:10,528 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:12:10,528 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:12:10,528 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:12:10,528 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 02:12:10,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:12:10,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:12:10,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:12:10,715 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:12:10,716 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:12:10,716 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 02:12:11,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:12:11,866 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:12:11,867 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 02:12:11,878 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdacd1ed/49847187d07d4367a0f95347483872d4/FLAGdf72fc946 [2024-06-28 02:12:11,889 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdacd1ed/49847187d07d4367a0f95347483872d4 [2024-06-28 02:12:11,891 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:12:11,892 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:12:11,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe031_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 02:12:12,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:12:12,033 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:12:12,033 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:12:12,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:12:12,037 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:12:12,038 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:12:11" (1/2) ... [2024-06-28 02:12:12,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5911c770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:12, skipping insertion in model container [2024-06-28 02:12:12,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:12:11" (1/2) ... [2024-06-28 02:12:12,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7edfb422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:12:12, skipping insertion in model container [2024-06-28 02:12:12,039 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:12:12" (2/2) ... [2024-06-28 02:12:12,040 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5911c770 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12, skipping insertion in model container [2024-06-28 02:12:12,040 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:12:12" (2/2) ... [2024-06-28 02:12:12,040 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:12:12,146 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:12:12,147 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2)) [2024-06-28 02:12:12,148 INFO L97 edCorrectnessWitness]: Location invariant before [L832-L832] ((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2)) [2024-06-28 02:12:12,148 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff0_thd3 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$r_buff1_thd3 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && (x$mem_tmp == 0 || x$mem_tmp == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 1)) && (x$w_buff1 == 0 || x$w_buff1 == 1)) && ((y == 0 || y == 1) || y == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((z == 0 || z == 1) || z == 2)) [2024-06-28 02:12:12,148 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:12:12,148 INFO L106 edCorrectnessWitness]: ghost_update [L830-L830] multithreaded = 1; [2024-06-28 02:12:12,182 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:12:12,341 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/safe031_power.oepc_pso.oepc_rmo.oepc.i[1013,1026] [2024-06-28 02:12:12,454 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:12:12,466 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 02:12:12,505 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/safe031_power.oepc_pso.oepc_rmo.oepc.i[1013,1026] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:12:12,579 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:12:12,608 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:12:12,609 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12 WrapperNode [2024-06-28 02:12:12,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:12:12,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:12:12,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:12:12,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:12:12,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,675 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 120 [2024-06-28 02:12:12,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:12:12,678 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:12:12,678 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:12:12,678 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:12:12,686 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,705 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,722 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:12:12,723 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,723 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:12:12,735 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:12:12,735 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:12:12,735 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:12:12,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (1/1) ... [2024-06-28 02:12:12,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:12:12,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:12:12,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:12:12,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:12:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:12:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:12:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:12:12,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:12:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:12:12,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:12:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:12:12,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:12:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:12:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:12:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:12:12,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:12:12,810 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:12:12,919 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:12:12,920 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:12:13,175 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:12:13,176 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:12:13,296 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:12:13,297 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:12:13,297 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:12:13 BoogieIcfgContainer [2024-06-28 02:12:13,297 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:12:13,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:12:13,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:12:13,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:12:13,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:12:11" (1/4) ... [2024-06-28 02:12:13,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17976782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:12:13, skipping insertion in model container [2024-06-28 02:12:13,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:12:12" (2/4) ... [2024-06-28 02:12:13,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17976782 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:12:13, skipping insertion in model container [2024-06-28 02:12:13,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:12:12" (3/4) ... [2024-06-28 02:12:13,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17976782 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:12:13, skipping insertion in model container [2024-06-28 02:12:13,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:12:13" (4/4) ... [2024-06-28 02:12:13,303 INFO L112 eAbstractionObserver]: Analyzing ICFG safe031_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 02:12:13,315 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:12:13,316 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 02:12:13,316 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:12:13,348 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:12:13,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 02:12:13,402 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 02:12:13,403 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:12:13,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 02:12:13,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 02:12:13,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-28 02:12:13,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:12:13,425 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;@422da1f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:12:13,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 02:12:13,430 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:12:13,430 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:12:13,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:12:13,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:13,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:12:13,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:13,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:13,437 INFO L85 PathProgramCache]: Analyzing trace with hash 345005311, now seen corresponding path program 1 times [2024-06-28 02:12:13,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:13,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735804015] [2024-06-28 02:12:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:13,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:14,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:14,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:14,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735804015] [2024-06-28 02:12:14,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735804015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:14,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:14,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:12:14,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314217527] [2024-06-28 02:12:14,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:14,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:12:14,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:14,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:12:14,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:12:14,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-28 02:12:14,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:14,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:14,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-28 02:12:14,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:14,797 INFO L124 PetriNetUnfolderBase]: 3692/6182 cut-off events. [2024-06-28 02:12:14,797 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-06-28 02:12:14,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11589 conditions, 6182 events. 3692/6182 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41093 event pairs, 2972 based on Foata normal form. 211/5910 useless extension candidates. Maximal degree in co-relation 11577. Up to 5308 conditions per place. [2024-06-28 02:12:14,830 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 41 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 02:12:14,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 223 flow [2024-06-28 02:12:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:12:14,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:12:14,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-06-28 02:12:14,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6808510638297872 [2024-06-28 02:12:14,841 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 96 transitions. [2024-06-28 02:12:14,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 223 flow [2024-06-28 02:12:14,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:14,848 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-28 02:12:14,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 02:12:14,853 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 02:12:14,853 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-28 02:12:14,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:14,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:14,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:14,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:12:14,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:14,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:14,855 INFO L85 PathProgramCache]: Analyzing trace with hash 837670302, now seen corresponding path program 1 times [2024-06-28 02:12:14,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:14,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300297769] [2024-06-28 02:12:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:15,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:15,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300297769] [2024-06-28 02:12:15,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300297769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:15,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:15,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:12:15,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207086863] [2024-06-28 02:12:15,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:15,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:12:15,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:15,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:12:15,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:12:15,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-28 02:12:15,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:15,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:15,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-28 02:12:15,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:15,958 INFO L124 PetriNetUnfolderBase]: 3676/5332 cut-off events. [2024-06-28 02:12:15,959 INFO L125 PetriNetUnfolderBase]: For 798/798 co-relation queries the response was YES. [2024-06-28 02:12:15,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12007 conditions, 5332 events. 3676/5332 cut-off events. For 798/798 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 29481 event pairs, 1466 based on Foata normal form. 6/5108 useless extension candidates. Maximal degree in co-relation 11995. Up to 5240 conditions per place. [2024-06-28 02:12:15,983 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 53 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-06-28 02:12:15,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 74 transitions, 321 flow [2024-06-28 02:12:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:12:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:12:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-28 02:12:15,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6648936170212766 [2024-06-28 02:12:15,987 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 125 transitions. [2024-06-28 02:12:15,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 74 transitions, 321 flow [2024-06-28 02:12:15,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 74 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:12:15,990 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 175 flow [2024-06-28 02:12:15,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 02:12:15,991 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-28 02:12:15,991 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 175 flow [2024-06-28 02:12:15,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:15,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:15,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:15,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:12:15,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:15,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:15,997 INFO L85 PathProgramCache]: Analyzing trace with hash 196868362, now seen corresponding path program 1 times [2024-06-28 02:12:15,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:15,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490969046] [2024-06-28 02:12:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:15,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:16,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:16,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490969046] [2024-06-28 02:12:16,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490969046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:16,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:16,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:12:16,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071891914] [2024-06-28 02:12:16,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:16,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:12:16,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:16,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:12:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:12:16,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-06-28 02:12:16,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:16,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:16,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-06-28 02:12:16,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:16,255 INFO L124 PetriNetUnfolderBase]: 821/1622 cut-off events. [2024-06-28 02:12:16,256 INFO L125 PetriNetUnfolderBase]: For 455/527 co-relation queries the response was YES. [2024-06-28 02:12:16,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3399 conditions, 1622 events. 821/1622 cut-off events. For 455/527 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10891 event pairs, 291 based on Foata normal form. 7/1525 useless extension candidates. Maximal degree in co-relation 3385. Up to 1020 conditions per place. [2024-06-28 02:12:16,263 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 30 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-06-28 02:12:16,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 250 flow [2024-06-28 02:12:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:12:16,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:12:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-28 02:12:16,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2024-06-28 02:12:16,265 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 175 flow. Second operand 3 states and 108 transitions. [2024-06-28 02:12:16,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 250 flow [2024-06-28 02:12:16,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 236 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:16,267 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 150 flow [2024-06-28 02:12:16,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-06-28 02:12:16,268 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2024-06-28 02:12:16,268 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 150 flow [2024-06-28 02:12:16,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:16,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:16,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:16,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:12:16,269 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:16,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash 211646992, now seen corresponding path program 1 times [2024-06-28 02:12:16,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:16,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054145069] [2024-06-28 02:12:16,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:16,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:16,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:16,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054145069] [2024-06-28 02:12:16,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054145069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:16,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:16,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:12:16,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518578197] [2024-06-28 02:12:16,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:16,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:12:16,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:12:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:12:16,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:16,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:16,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:16,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:16,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:17,419 INFO L124 PetriNetUnfolderBase]: 3570/5888 cut-off events. [2024-06-28 02:12:17,420 INFO L125 PetriNetUnfolderBase]: For 2811/2811 co-relation queries the response was YES. [2024-06-28 02:12:17,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13348 conditions, 5888 events. 3570/5888 cut-off events. For 2811/2811 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 37470 event pairs, 2311 based on Foata normal form. 2/5707 useless extension candidates. Maximal degree in co-relation 13333. Up to 5117 conditions per place. [2024-06-28 02:12:17,457 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 52 selfloop transitions, 9 changer transitions 2/73 dead transitions. [2024-06-28 02:12:17,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 73 transitions, 348 flow [2024-06-28 02:12:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:12:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:12:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2024-06-28 02:12:17,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-28 02:12:17,460 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 150 flow. Second operand 5 states and 124 transitions. [2024-06-28 02:12:17,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 73 transitions, 348 flow [2024-06-28 02:12:17,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:17,463 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 213 flow [2024-06-28 02:12:17,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-28 02:12:17,465 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-06-28 02:12:17,465 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 213 flow [2024-06-28 02:12:17,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:17,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:17,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:17,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:12:17,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:17,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:17,466 INFO L85 PathProgramCache]: Analyzing trace with hash 948886236, now seen corresponding path program 1 times [2024-06-28 02:12:17,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:17,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612437937] [2024-06-28 02:12:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:17,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:18,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:18,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612437937] [2024-06-28 02:12:18,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612437937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:18,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:18,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:12:18,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761858607] [2024-06-28 02:12:18,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:18,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:12:18,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:18,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:12:18,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:12:18,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-28 02:12:18,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:18,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:18,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-28 02:12:18,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:18,783 INFO L124 PetriNetUnfolderBase]: 2670/4470 cut-off events. [2024-06-28 02:12:18,784 INFO L125 PetriNetUnfolderBase]: For 3245/3245 co-relation queries the response was YES. [2024-06-28 02:12:18,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11043 conditions, 4470 events. 2670/4470 cut-off events. For 3245/3245 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 28126 event pairs, 950 based on Foata normal form. 6/4295 useless extension candidates. Maximal degree in co-relation 11026. Up to 3781 conditions per place. [2024-06-28 02:12:18,809 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 68 selfloop transitions, 15 changer transitions 0/95 dead transitions. [2024-06-28 02:12:18,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 95 transitions, 491 flow [2024-06-28 02:12:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-06-28 02:12:18,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6028368794326241 [2024-06-28 02:12:18,812 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 213 flow. Second operand 6 states and 170 transitions. [2024-06-28 02:12:18,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 95 transitions, 491 flow [2024-06-28 02:12:18,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 476 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:18,818 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 264 flow [2024-06-28 02:12:18,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=264, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-28 02:12:18,820 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-06-28 02:12:18,821 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 264 flow [2024-06-28 02:12:18,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:18,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:18,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:18,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:12:18,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:18,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:18,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2028876414, now seen corresponding path program 1 times [2024-06-28 02:12:18,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:18,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874001880] [2024-06-28 02:12:18,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:18,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:19,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:19,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874001880] [2024-06-28 02:12:19,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874001880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:19,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:19,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:19,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263618356] [2024-06-28 02:12:19,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:19,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:19,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:19,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:19,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:19,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:19,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:19,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:19,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:19,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:19,985 INFO L124 PetriNetUnfolderBase]: 3143/5282 cut-off events. [2024-06-28 02:12:19,986 INFO L125 PetriNetUnfolderBase]: For 5784/5784 co-relation queries the response was YES. [2024-06-28 02:12:19,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13747 conditions, 5282 events. 3143/5282 cut-off events. For 5784/5784 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 33730 event pairs, 1417 based on Foata normal form. 3/5103 useless extension candidates. Maximal degree in co-relation 13727. Up to 4449 conditions per place. [2024-06-28 02:12:20,009 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 68 selfloop transitions, 19 changer transitions 0/97 dead transitions. [2024-06-28 02:12:20,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 574 flow [2024-06-28 02:12:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:20,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-06-28 02:12:20,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354609929078015 [2024-06-28 02:12:20,010 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 264 flow. Second operand 6 states and 151 transitions. [2024-06-28 02:12:20,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 574 flow [2024-06-28 02:12:20,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 539 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:20,017 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 362 flow [2024-06-28 02:12:20,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2024-06-28 02:12:20,020 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-28 02:12:20,020 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 362 flow [2024-06-28 02:12:20,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:20,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:20,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:20,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:12:20,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:20,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:20,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1522636143, now seen corresponding path program 1 times [2024-06-28 02:12:20,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:20,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913395444] [2024-06-28 02:12:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:20,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:20,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:20,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913395444] [2024-06-28 02:12:20,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913395444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:20,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:20,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:20,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066431830] [2024-06-28 02:12:20,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:20,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:20,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:20,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:20,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:20,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:20,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:20,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:20,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:21,169 INFO L124 PetriNetUnfolderBase]: 3189/5371 cut-off events. [2024-06-28 02:12:21,169 INFO L125 PetriNetUnfolderBase]: For 9637/9637 co-relation queries the response was YES. [2024-06-28 02:12:21,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15714 conditions, 5371 events. 3189/5371 cut-off events. For 9637/9637 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 34336 event pairs, 1385 based on Foata normal form. 4/5190 useless extension candidates. Maximal degree in co-relation 15690. Up to 4543 conditions per place. [2024-06-28 02:12:21,199 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 81 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-06-28 02:12:21,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 104 transitions, 663 flow [2024-06-28 02:12:21,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 02:12:21,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 02:12:21,200 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 362 flow. Second operand 6 states and 148 transitions. [2024-06-28 02:12:21,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 104 transitions, 663 flow [2024-06-28 02:12:21,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 649 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-28 02:12:21,207 INFO L231 Difference]: Finished difference. Result has 73 places, 77 transitions, 444 flow [2024-06-28 02:12:21,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=73, PETRI_TRANSITIONS=77} [2024-06-28 02:12:21,208 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2024-06-28 02:12:21,208 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 77 transitions, 444 flow [2024-06-28 02:12:21,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:21,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:21,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:21,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:12:21,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:21,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:21,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1529332143, now seen corresponding path program 2 times [2024-06-28 02:12:21,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:21,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090424084] [2024-06-28 02:12:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:21,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:21,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:21,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090424084] [2024-06-28 02:12:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090424084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:21,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:21,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:21,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132370170] [2024-06-28 02:12:21,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:21,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:21,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:21,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:21,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:21,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:21,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 77 transitions, 444 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:21,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:21,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:21,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:22,318 INFO L124 PetriNetUnfolderBase]: 3212/5349 cut-off events. [2024-06-28 02:12:22,318 INFO L125 PetriNetUnfolderBase]: For 13259/13259 co-relation queries the response was YES. [2024-06-28 02:12:22,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16924 conditions, 5349 events. 3212/5349 cut-off events. For 13259/13259 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 33722 event pairs, 1335 based on Foata normal form. 4/5165 useless extension candidates. Maximal degree in co-relation 16896. Up to 4526 conditions per place. [2024-06-28 02:12:22,360 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 79 selfloop transitions, 18 changer transitions 0/107 dead transitions. [2024-06-28 02:12:22,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 107 transitions, 744 flow [2024-06-28 02:12:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:22,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 02:12:22,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-28 02:12:22,361 INFO L175 Difference]: Start difference. First operand has 73 places, 77 transitions, 444 flow. Second operand 6 states and 149 transitions. [2024-06-28 02:12:22,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 107 transitions, 744 flow [2024-06-28 02:12:22,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 107 transitions, 707 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:22,370 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 485 flow [2024-06-28 02:12:22,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-06-28 02:12:22,371 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2024-06-28 02:12:22,371 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 485 flow [2024-06-28 02:12:22,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:22,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:22,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:22,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:12:22,371 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:22,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:22,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1529342063, now seen corresponding path program 1 times [2024-06-28 02:12:22,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:22,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992613342] [2024-06-28 02:12:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:22,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:23,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:23,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:23,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992613342] [2024-06-28 02:12:23,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992613342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:23,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:23,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:23,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152759104] [2024-06-28 02:12:23,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:23,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:23,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:23,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:23,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:23,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:23,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 485 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:23,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:23,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:23,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:23,872 INFO L124 PetriNetUnfolderBase]: 3231/5411 cut-off events. [2024-06-28 02:12:23,873 INFO L125 PetriNetUnfolderBase]: For 16477/16477 co-relation queries the response was YES. [2024-06-28 02:12:23,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17865 conditions, 5411 events. 3231/5411 cut-off events. For 16477/16477 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 34479 event pairs, 1314 based on Foata normal form. 3/5229 useless extension candidates. Maximal degree in co-relation 17836. Up to 4542 conditions per place. [2024-06-28 02:12:23,910 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 86 selfloop transitions, 23 changer transitions 0/119 dead transitions. [2024-06-28 02:12:23,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 859 flow [2024-06-28 02:12:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:23,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:23,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 02:12:23,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-28 02:12:23,911 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 485 flow. Second operand 7 states and 176 transitions. [2024-06-28 02:12:23,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 859 flow [2024-06-28 02:12:23,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 119 transitions, 805 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:23,921 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 524 flow [2024-06-28 02:12:23,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=524, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-28 02:12:23,922 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2024-06-28 02:12:23,922 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 524 flow [2024-06-28 02:12:23,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:23,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:23,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:23,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:12:23,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:23,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:23,923 INFO L85 PathProgramCache]: Analyzing trace with hash -42918397, now seen corresponding path program 1 times [2024-06-28 02:12:23,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:23,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676916931] [2024-06-28 02:12:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:24,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:24,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676916931] [2024-06-28 02:12:24,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676916931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:24,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:24,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:24,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222729666] [2024-06-28 02:12:24,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:24,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:24,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:24,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:24,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:24,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 524 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:24,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:24,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:24,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:25,237 INFO L124 PetriNetUnfolderBase]: 3566/5947 cut-off events. [2024-06-28 02:12:25,237 INFO L125 PetriNetUnfolderBase]: For 20752/20752 co-relation queries the response was YES. [2024-06-28 02:12:25,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20608 conditions, 5947 events. 3566/5947 cut-off events. For 20752/20752 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 38258 event pairs, 1341 based on Foata normal form. 10/5764 useless extension candidates. Maximal degree in co-relation 20578. Up to 4735 conditions per place. [2024-06-28 02:12:25,267 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 102 selfloop transitions, 33 changer transitions 0/145 dead transitions. [2024-06-28 02:12:25,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 145 transitions, 1084 flow [2024-06-28 02:12:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:25,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 02:12:25,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 02:12:25,269 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 524 flow. Second operand 7 states and 188 transitions. [2024-06-28 02:12:25,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 145 transitions, 1084 flow [2024-06-28 02:12:25,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 145 transitions, 1021 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:25,282 INFO L231 Difference]: Finished difference. Result has 84 places, 104 transitions, 732 flow [2024-06-28 02:12:25,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=732, PETRI_PLACES=84, PETRI_TRANSITIONS=104} [2024-06-28 02:12:25,284 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2024-06-28 02:12:25,284 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 104 transitions, 732 flow [2024-06-28 02:12:25,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:25,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:25,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:25,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:12:25,285 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:25,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:25,285 INFO L85 PathProgramCache]: Analyzing trace with hash -202433263, now seen corresponding path program 2 times [2024-06-28 02:12:25,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:25,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959454919] [2024-06-28 02:12:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:25,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:25,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:25,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959454919] [2024-06-28 02:12:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959454919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:25,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:25,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:25,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335551103] [2024-06-28 02:12:25,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:25,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:25,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:25,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:25,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:25,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:25,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 104 transitions, 732 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:25,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:25,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:25,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:26,745 INFO L124 PetriNetUnfolderBase]: 4149/6752 cut-off events. [2024-06-28 02:12:26,745 INFO L125 PetriNetUnfolderBase]: For 34961/34961 co-relation queries the response was YES. [2024-06-28 02:12:26,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28226 conditions, 6752 events. 4149/6752 cut-off events. For 34961/34961 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 43199 event pairs, 1366 based on Foata normal form. 10/6565 useless extension candidates. Maximal degree in co-relation 28192. Up to 4718 conditions per place. [2024-06-28 02:12:26,787 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 105 selfloop transitions, 49 changer transitions 0/164 dead transitions. [2024-06-28 02:12:26,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 164 transitions, 1428 flow [2024-06-28 02:12:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:26,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:26,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-28 02:12:26,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805471124620061 [2024-06-28 02:12:26,789 INFO L175 Difference]: Start difference. First operand has 84 places, 104 transitions, 732 flow. Second operand 7 states and 191 transitions. [2024-06-28 02:12:26,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 164 transitions, 1428 flow [2024-06-28 02:12:26,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 164 transitions, 1380 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-28 02:12:26,816 INFO L231 Difference]: Finished difference. Result has 92 places, 118 transitions, 982 flow [2024-06-28 02:12:26,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=982, PETRI_PLACES=92, PETRI_TRANSITIONS=118} [2024-06-28 02:12:26,817 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 39 predicate places. [2024-06-28 02:12:26,817 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 118 transitions, 982 flow [2024-06-28 02:12:26,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:26,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:26,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:26,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:12:26,818 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:26,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:26,818 INFO L85 PathProgramCache]: Analyzing trace with hash 163468311, now seen corresponding path program 3 times [2024-06-28 02:12:26,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:26,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764149609] [2024-06-28 02:12:26,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:26,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:27,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:27,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764149609] [2024-06-28 02:12:27,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764149609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:27,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:27,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:27,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236599229] [2024-06-28 02:12:27,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:27,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:27,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:27,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:27,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:27,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:27,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 118 transitions, 982 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:27,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:27,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:27,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:28,234 INFO L124 PetriNetUnfolderBase]: 4373/7136 cut-off events. [2024-06-28 02:12:28,234 INFO L125 PetriNetUnfolderBase]: For 46566/46566 co-relation queries the response was YES. [2024-06-28 02:12:28,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32969 conditions, 7136 events. 4373/7136 cut-off events. For 46566/46566 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 46238 event pairs, 1473 based on Foata normal form. 10/6948 useless extension candidates. Maximal degree in co-relation 32930. Up to 4852 conditions per place. [2024-06-28 02:12:28,285 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 107 selfloop transitions, 53 changer transitions 0/170 dead transitions. [2024-06-28 02:12:28,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 170 transitions, 1624 flow [2024-06-28 02:12:28,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:28,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-28 02:12:28,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775075987841946 [2024-06-28 02:12:28,287 INFO L175 Difference]: Start difference. First operand has 92 places, 118 transitions, 982 flow. Second operand 7 states and 190 transitions. [2024-06-28 02:12:28,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 170 transitions, 1624 flow [2024-06-28 02:12:28,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 170 transitions, 1564 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:28,346 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 1198 flow [2024-06-28 02:12:28,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1198, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2024-06-28 02:12:28,346 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2024-06-28 02:12:28,347 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 1198 flow [2024-06-28 02:12:28,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:28,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:28,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:28,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:12:28,347 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:28,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:28,348 INFO L85 PathProgramCache]: Analyzing trace with hash 164965185, now seen corresponding path program 1 times [2024-06-28 02:12:28,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:28,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698296388] [2024-06-28 02:12:28,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:28,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:29,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:29,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:29,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698296388] [2024-06-28 02:12:29,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698296388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:29,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:29,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:29,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553161658] [2024-06-28 02:12:29,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:29,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:29,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:29,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:29,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:29,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:29,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 1198 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:29,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:29,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:29,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:30,246 INFO L124 PetriNetUnfolderBase]: 4404/7311 cut-off events. [2024-06-28 02:12:30,246 INFO L125 PetriNetUnfolderBase]: For 51975/51975 co-relation queries the response was YES. [2024-06-28 02:12:30,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35136 conditions, 7311 events. 4404/7311 cut-off events. For 51975/51975 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 48422 event pairs, 1552 based on Foata normal form. 6/7079 useless extension candidates. Maximal degree in co-relation 35093. Up to 6083 conditions per place. [2024-06-28 02:12:30,306 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 139 selfloop transitions, 26 changer transitions 0/175 dead transitions. [2024-06-28 02:12:30,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 175 transitions, 1762 flow [2024-06-28 02:12:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:12:30,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2024-06-28 02:12:30,308 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 1198 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:12:30,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 175 transitions, 1762 flow [2024-06-28 02:12:30,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 175 transitions, 1688 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:30,372 INFO L231 Difference]: Finished difference. Result has 105 places, 131 transitions, 1240 flow [2024-06-28 02:12:30,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1240, PETRI_PLACES=105, PETRI_TRANSITIONS=131} [2024-06-28 02:12:30,373 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 52 predicate places. [2024-06-28 02:12:30,373 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 131 transitions, 1240 flow [2024-06-28 02:12:30,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:30,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:30,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:30,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:12:30,374 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:30,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:30,374 INFO L85 PathProgramCache]: Analyzing trace with hash -738116760, now seen corresponding path program 1 times [2024-06-28 02:12:30,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:30,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400589399] [2024-06-28 02:12:30,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:30,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:30,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:30,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400589399] [2024-06-28 02:12:30,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400589399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:30,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:30,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:12:30,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811430782] [2024-06-28 02:12:30,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:30,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:12:30,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:12:30,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:12:30,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:30,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 131 transitions, 1240 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:30,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:30,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:30,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:31,617 INFO L124 PetriNetUnfolderBase]: 4401/7336 cut-off events. [2024-06-28 02:12:31,618 INFO L125 PetriNetUnfolderBase]: For 54757/54757 co-relation queries the response was YES. [2024-06-28 02:12:31,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35444 conditions, 7336 events. 4401/7336 cut-off events. For 54757/54757 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 48916 event pairs, 1679 based on Foata normal form. 1/7102 useless extension candidates. Maximal degree in co-relation 35399. Up to 6234 conditions per place. [2024-06-28 02:12:31,680 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 124 selfloop transitions, 14 changer transitions 0/148 dead transitions. [2024-06-28 02:12:31,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 148 transitions, 1592 flow [2024-06-28 02:12:31,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:12:31,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:12:31,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 02:12:31,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-28 02:12:31,682 INFO L175 Difference]: Start difference. First operand has 105 places, 131 transitions, 1240 flow. Second operand 5 states and 118 transitions. [2024-06-28 02:12:31,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 148 transitions, 1592 flow [2024-06-28 02:12:31,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 148 transitions, 1496 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:31,744 INFO L231 Difference]: Finished difference. Result has 104 places, 134 transitions, 1232 flow [2024-06-28 02:12:31,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1232, PETRI_PLACES=104, PETRI_TRANSITIONS=134} [2024-06-28 02:12:31,745 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2024-06-28 02:12:31,745 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 134 transitions, 1232 flow [2024-06-28 02:12:31,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:31,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:31,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:31,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:12:31,746 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:31,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:31,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1335268146, now seen corresponding path program 1 times [2024-06-28 02:12:31,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:31,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488430557] [2024-06-28 02:12:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:31,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:32,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:32,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488430557] [2024-06-28 02:12:32,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488430557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:32,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:32,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:12:32,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984335517] [2024-06-28 02:12:32,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:32,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:12:32,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:12:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:12:32,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:32,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 134 transitions, 1232 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:32,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:32,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:32,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:33,444 INFO L124 PetriNetUnfolderBase]: 4401/7330 cut-off events. [2024-06-28 02:12:33,445 INFO L125 PetriNetUnfolderBase]: For 58350/58350 co-relation queries the response was YES. [2024-06-28 02:12:33,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35590 conditions, 7330 events. 4401/7330 cut-off events. For 58350/58350 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 48766 event pairs, 1638 based on Foata normal form. 2/7099 useless extension candidates. Maximal degree in co-relation 35544. Up to 6194 conditions per place. [2024-06-28 02:12:33,495 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 149 selfloop transitions, 17 changer transitions 0/176 dead transitions. [2024-06-28 02:12:33,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 176 transitions, 1730 flow [2024-06-28 02:12:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:12:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:12:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 02:12:33,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 02:12:33,499 INFO L175 Difference]: Start difference. First operand has 104 places, 134 transitions, 1232 flow. Second operand 7 states and 173 transitions. [2024-06-28 02:12:33,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 176 transitions, 1730 flow [2024-06-28 02:12:33,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 176 transitions, 1682 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:33,538 INFO L231 Difference]: Finished difference. Result has 109 places, 141 transitions, 1317 flow [2024-06-28 02:12:33,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1317, PETRI_PLACES=109, PETRI_TRANSITIONS=141} [2024-06-28 02:12:33,538 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-06-28 02:12:33,538 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 141 transitions, 1317 flow [2024-06-28 02:12:33,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:33,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:33,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:33,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:12:33,539 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:33,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:33,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1330468850, now seen corresponding path program 1 times [2024-06-28 02:12:33,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:33,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465232800] [2024-06-28 02:12:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:33,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:34,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:34,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465232800] [2024-06-28 02:12:34,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465232800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:34,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:34,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:34,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956958151] [2024-06-28 02:12:34,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:34,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:34,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:34,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:34,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:34,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:34,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 141 transitions, 1317 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:34,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:34,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:34,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:35,345 INFO L124 PetriNetUnfolderBase]: 4581/7365 cut-off events. [2024-06-28 02:12:35,346 INFO L125 PetriNetUnfolderBase]: For 66819/66819 co-relation queries the response was YES. [2024-06-28 02:12:35,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37744 conditions, 7365 events. 4581/7365 cut-off events. For 66819/66819 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 47565 event pairs, 1458 based on Foata normal form. 5/7197 useless extension candidates. Maximal degree in co-relation 37696. Up to 6102 conditions per place. [2024-06-28 02:12:35,404 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 168 selfloop transitions, 52 changer transitions 0/230 dead transitions. [2024-06-28 02:12:35,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 230 transitions, 2463 flow [2024-06-28 02:12:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-28 02:12:35,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-06-28 02:12:35,406 INFO L175 Difference]: Start difference. First operand has 109 places, 141 transitions, 1317 flow. Second operand 8 states and 218 transitions. [2024-06-28 02:12:35,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 230 transitions, 2463 flow [2024-06-28 02:12:35,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 230 transitions, 2388 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:35,468 INFO L231 Difference]: Finished difference. Result has 116 places, 173 transitions, 1801 flow [2024-06-28 02:12:35,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1801, PETRI_PLACES=116, PETRI_TRANSITIONS=173} [2024-06-28 02:12:35,468 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 63 predicate places. [2024-06-28 02:12:35,468 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 173 transitions, 1801 flow [2024-06-28 02:12:35,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:35,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:35,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:35,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:12:35,469 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:35,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1157085230, now seen corresponding path program 2 times [2024-06-28 02:12:35,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:35,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354039410] [2024-06-28 02:12:35,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:36,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:36,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:36,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354039410] [2024-06-28 02:12:36,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354039410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:36,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:36,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:36,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917211605] [2024-06-28 02:12:36,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:36,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:36,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:36,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:36,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:36,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 173 transitions, 1801 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:36,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:36,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:36,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:37,265 INFO L124 PetriNetUnfolderBase]: 4741/7651 cut-off events. [2024-06-28 02:12:37,266 INFO L125 PetriNetUnfolderBase]: For 83527/83527 co-relation queries the response was YES. [2024-06-28 02:12:37,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42040 conditions, 7651 events. 4741/7651 cut-off events. For 83527/83527 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 49323 event pairs, 1337 based on Foata normal form. 10/7462 useless extension candidates. Maximal degree in co-relation 41988. Up to 5244 conditions per place. [2024-06-28 02:12:37,330 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 159 selfloop transitions, 63 changer transitions 0/232 dead transitions. [2024-06-28 02:12:37,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 232 transitions, 2645 flow [2024-06-28 02:12:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-28 02:12:37,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-06-28 02:12:37,333 INFO L175 Difference]: Start difference. First operand has 116 places, 173 transitions, 1801 flow. Second operand 8 states and 218 transitions. [2024-06-28 02:12:37,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 232 transitions, 2645 flow [2024-06-28 02:12:37,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 232 transitions, 2563 flow, removed 40 selfloop flow, removed 1 redundant places. [2024-06-28 02:12:37,449 INFO L231 Difference]: Finished difference. Result has 123 places, 179 transitions, 1964 flow [2024-06-28 02:12:37,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1964, PETRI_PLACES=123, PETRI_TRANSITIONS=179} [2024-06-28 02:12:37,450 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-06-28 02:12:37,450 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 179 transitions, 1964 flow [2024-06-28 02:12:37,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:37,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:37,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:37,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:12:37,451 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:37,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:37,451 INFO L85 PathProgramCache]: Analyzing trace with hash 818616624, now seen corresponding path program 3 times [2024-06-28 02:12:37,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:37,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736072271] [2024-06-28 02:12:37,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:37,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:38,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:38,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736072271] [2024-06-28 02:12:38,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736072271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:38,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:38,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:38,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874736182] [2024-06-28 02:12:38,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:38,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:38,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:38,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 179 transitions, 1964 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:38,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:38,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:38,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:39,345 INFO L124 PetriNetUnfolderBase]: 4901/7914 cut-off events. [2024-06-28 02:12:39,346 INFO L125 PetriNetUnfolderBase]: For 95747/95747 co-relation queries the response was YES. [2024-06-28 02:12:39,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45637 conditions, 7914 events. 4901/7914 cut-off events. For 95747/95747 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 51354 event pairs, 1313 based on Foata normal form. 10/7703 useless extension candidates. Maximal degree in co-relation 45582. Up to 5464 conditions per place. [2024-06-28 02:12:39,405 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 159 selfloop transitions, 69 changer transitions 0/238 dead transitions. [2024-06-28 02:12:39,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 238 transitions, 2832 flow [2024-06-28 02:12:39,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:39,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-28 02:12:39,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797872340425532 [2024-06-28 02:12:39,406 INFO L175 Difference]: Start difference. First operand has 123 places, 179 transitions, 1964 flow. Second operand 8 states and 218 transitions. [2024-06-28 02:12:39,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 238 transitions, 2832 flow [2024-06-28 02:12:39,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 238 transitions, 2645 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:39,524 INFO L231 Difference]: Finished difference. Result has 125 places, 185 transitions, 2034 flow [2024-06-28 02:12:39,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2034, PETRI_PLACES=125, PETRI_TRANSITIONS=185} [2024-06-28 02:12:39,524 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-06-28 02:12:39,524 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 185 transitions, 2034 flow [2024-06-28 02:12:39,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:39,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:39,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:39,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:12:39,525 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:39,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash 818943054, now seen corresponding path program 4 times [2024-06-28 02:12:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:39,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059356036] [2024-06-28 02:12:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:39,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:40,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:40,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059356036] [2024-06-28 02:12:40,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059356036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:40,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:40,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:40,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812775347] [2024-06-28 02:12:40,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:40,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:40,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:40,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:40,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 185 transitions, 2034 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:40,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:40,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:40,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:41,526 INFO L124 PetriNetUnfolderBase]: 5160/8234 cut-off events. [2024-06-28 02:12:41,527 INFO L125 PetriNetUnfolderBase]: For 106491/106491 co-relation queries the response was YES. [2024-06-28 02:12:41,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49154 conditions, 8234 events. 5160/8234 cut-off events. For 106491/106491 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 52956 event pairs, 1315 based on Foata normal form. 5/8037 useless extension candidates. Maximal degree in co-relation 49098. Up to 5347 conditions per place. [2024-06-28 02:12:41,593 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 164 selfloop transitions, 92 changer transitions 0/266 dead transitions. [2024-06-28 02:12:41,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 266 transitions, 3229 flow [2024-06-28 02:12:41,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:41,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-28 02:12:41,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886524822695035 [2024-06-28 02:12:41,595 INFO L175 Difference]: Start difference. First operand has 125 places, 185 transitions, 2034 flow. Second operand 9 states and 249 transitions. [2024-06-28 02:12:41,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 266 transitions, 3229 flow [2024-06-28 02:12:41,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 266 transitions, 3018 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 02:12:41,724 INFO L231 Difference]: Finished difference. Result has 129 places, 200 transitions, 2296 flow [2024-06-28 02:12:41,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1823, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2296, PETRI_PLACES=129, PETRI_TRANSITIONS=200} [2024-06-28 02:12:41,725 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-06-28 02:12:41,725 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 200 transitions, 2296 flow [2024-06-28 02:12:41,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:41,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:41,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:41,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:12:41,726 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:41,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:41,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1406781798, now seen corresponding path program 1 times [2024-06-28 02:12:41,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:41,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559985404] [2024-06-28 02:12:41,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:41,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:42,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:42,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559985404] [2024-06-28 02:12:42,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559985404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:42,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:42,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:42,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932381899] [2024-06-28 02:12:42,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:42,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:42,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:42,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:42,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 200 transitions, 2296 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:42,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:42,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:42,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:43,502 INFO L124 PetriNetUnfolderBase]: 5190/8133 cut-off events. [2024-06-28 02:12:43,503 INFO L125 PetriNetUnfolderBase]: For 120604/120604 co-relation queries the response was YES. [2024-06-28 02:12:43,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51769 conditions, 8133 events. 5190/8133 cut-off events. For 120604/120604 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 52087 event pairs, 1633 based on Foata normal form. 6/7970 useless extension candidates. Maximal degree in co-relation 51711. Up to 7085 conditions per place. [2024-06-28 02:12:43,574 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 183 selfloop transitions, 37 changer transitions 0/230 dead transitions. [2024-06-28 02:12:43,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 230 transitions, 2978 flow [2024-06-28 02:12:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 02:12:43,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-28 02:12:43,575 INFO L175 Difference]: Start difference. First operand has 129 places, 200 transitions, 2296 flow. Second operand 6 states and 149 transitions. [2024-06-28 02:12:43,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 230 transitions, 2978 flow [2024-06-28 02:12:43,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 230 transitions, 2794 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:43,769 INFO L231 Difference]: Finished difference. Result has 131 places, 207 transitions, 2354 flow [2024-06-28 02:12:43,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2354, PETRI_PLACES=131, PETRI_TRANSITIONS=207} [2024-06-28 02:12:43,770 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2024-06-28 02:12:43,770 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 207 transitions, 2354 flow [2024-06-28 02:12:43,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:43,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:43,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:43,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:12:43,771 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:43,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:43,771 INFO L85 PathProgramCache]: Analyzing trace with hash -417515132, now seen corresponding path program 1 times [2024-06-28 02:12:43,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:43,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466192550] [2024-06-28 02:12:43,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:43,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:44,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:44,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466192550] [2024-06-28 02:12:44,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466192550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:44,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:44,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:44,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142179477] [2024-06-28 02:12:44,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:44,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:44,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:44,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:44,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:44,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 207 transitions, 2354 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:44,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:44,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:44,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:45,818 INFO L124 PetriNetUnfolderBase]: 5504/8604 cut-off events. [2024-06-28 02:12:45,819 INFO L125 PetriNetUnfolderBase]: For 133417/133417 co-relation queries the response was YES. [2024-06-28 02:12:45,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55972 conditions, 8604 events. 5504/8604 cut-off events. For 133417/133417 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 55070 event pairs, 1670 based on Foata normal form. 6/8446 useless extension candidates. Maximal degree in co-relation 55911. Up to 7424 conditions per place. [2024-06-28 02:12:45,900 INFO L140 encePairwiseOnDemand]: 29/47 looper letters, 239 selfloop transitions, 66 changer transitions 0/315 dead transitions. [2024-06-28 02:12:45,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 315 transitions, 4046 flow [2024-06-28 02:12:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:12:45,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:12:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 287 transitions. [2024-06-28 02:12:45,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5551257253384912 [2024-06-28 02:12:45,902 INFO L175 Difference]: Start difference. First operand has 131 places, 207 transitions, 2354 flow. Second operand 11 states and 287 transitions. [2024-06-28 02:12:45,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 315 transitions, 4046 flow [2024-06-28 02:12:46,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 315 transitions, 3949 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:46,098 INFO L231 Difference]: Finished difference. Result has 146 places, 250 transitions, 3190 flow [2024-06-28 02:12:46,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3190, PETRI_PLACES=146, PETRI_TRANSITIONS=250} [2024-06-28 02:12:46,098 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2024-06-28 02:12:46,098 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 250 transitions, 3190 flow [2024-06-28 02:12:46,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:46,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:46,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:46,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:12:46,099 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:46,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:46,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1188952812, now seen corresponding path program 2 times [2024-06-28 02:12:46,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:46,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054646576] [2024-06-28 02:12:46,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:46,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:46,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:46,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054646576] [2024-06-28 02:12:46,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054646576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:46,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:46,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:12:46,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996346957] [2024-06-28 02:12:46,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:46,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:12:46,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:46,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:12:46,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:12:46,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:46,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 250 transitions, 3190 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:46,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:46,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:46,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:48,283 INFO L124 PetriNetUnfolderBase]: 5633/8805 cut-off events. [2024-06-28 02:12:48,283 INFO L125 PetriNetUnfolderBase]: For 165675/165675 co-relation queries the response was YES. [2024-06-28 02:12:48,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62618 conditions, 8805 events. 5633/8805 cut-off events. For 165675/165675 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 56556 event pairs, 1631 based on Foata normal form. 5/8638 useless extension candidates. Maximal degree in co-relation 62549. Up to 7568 conditions per place. [2024-06-28 02:12:48,370 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 243 selfloop transitions, 62 changer transitions 0/315 dead transitions. [2024-06-28 02:12:48,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 315 transitions, 4542 flow [2024-06-28 02:12:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:12:48,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:12:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-28 02:12:48,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-06-28 02:12:48,373 INFO L175 Difference]: Start difference. First operand has 146 places, 250 transitions, 3190 flow. Second operand 8 states and 215 transitions. [2024-06-28 02:12:48,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 315 transitions, 4542 flow [2024-06-28 02:12:48,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 315 transitions, 4187 flow, removed 171 selfloop flow, removed 2 redundant places. [2024-06-28 02:12:48,792 INFO L231 Difference]: Finished difference. Result has 153 places, 268 transitions, 3441 flow [2024-06-28 02:12:48,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2925, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3441, PETRI_PLACES=153, PETRI_TRANSITIONS=268} [2024-06-28 02:12:48,793 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-06-28 02:12:48,793 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 268 transitions, 3441 flow [2024-06-28 02:12:48,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:48,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:48,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:48,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:12:48,794 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:48,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1383642318, now seen corresponding path program 1 times [2024-06-28 02:12:48,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:48,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723921944] [2024-06-28 02:12:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:48,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:49,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:49,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723921944] [2024-06-28 02:12:49,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723921944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:49,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:49,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427966981] [2024-06-28 02:12:49,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:49,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:49,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:49,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:49,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:49,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:49,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 268 transitions, 3441 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:49,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:49,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:49,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:51,395 INFO L124 PetriNetUnfolderBase]: 6769/10507 cut-off events. [2024-06-28 02:12:51,396 INFO L125 PetriNetUnfolderBase]: For 228900/228900 co-relation queries the response was YES. [2024-06-28 02:12:51,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75278 conditions, 10507 events. 6769/10507 cut-off events. For 228900/228900 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 68530 event pairs, 1819 based on Foata normal form. 97/10441 useless extension candidates. Maximal degree in co-relation 75205. Up to 7616 conditions per place. [2024-06-28 02:12:51,505 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 276 selfloop transitions, 55 changer transitions 0/341 dead transitions. [2024-06-28 02:12:51,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 341 transitions, 4737 flow [2024-06-28 02:12:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:51,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-28 02:12:51,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886524822695035 [2024-06-28 02:12:51,506 INFO L175 Difference]: Start difference. First operand has 153 places, 268 transitions, 3441 flow. Second operand 9 states and 249 transitions. [2024-06-28 02:12:51,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 341 transitions, 4737 flow [2024-06-28 02:12:51,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 341 transitions, 4514 flow, removed 87 selfloop flow, removed 4 redundant places. [2024-06-28 02:12:51,927 INFO L231 Difference]: Finished difference. Result has 159 places, 276 transitions, 3539 flow [2024-06-28 02:12:51,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3539, PETRI_PLACES=159, PETRI_TRANSITIONS=276} [2024-06-28 02:12:51,928 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 106 predicate places. [2024-06-28 02:12:51,928 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 276 transitions, 3539 flow [2024-06-28 02:12:51,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:51,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:51,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:51,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:12:51,929 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:51,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:51,929 INFO L85 PathProgramCache]: Analyzing trace with hash 760038689, now seen corresponding path program 1 times [2024-06-28 02:12:51,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:51,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672033747] [2024-06-28 02:12:51,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:51,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:52,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:52,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672033747] [2024-06-28 02:12:52,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672033747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:52,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:52,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:12:52,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087850964] [2024-06-28 02:12:52,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:52,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:12:52,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:52,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:12:52,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:12:52,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:52,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 276 transitions, 3539 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:52,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:52,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:52,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:53,988 INFO L124 PetriNetUnfolderBase]: 6811/10666 cut-off events. [2024-06-28 02:12:53,988 INFO L125 PetriNetUnfolderBase]: For 227790/227790 co-relation queries the response was YES. [2024-06-28 02:12:54,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77056 conditions, 10666 events. 6811/10666 cut-off events. For 227790/227790 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 70688 event pairs, 2101 based on Foata normal form. 3/10485 useless extension candidates. Maximal degree in co-relation 76980. Up to 9404 conditions per place. [2024-06-28 02:12:54,103 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 245 selfloop transitions, 72 changer transitions 0/327 dead transitions. [2024-06-28 02:12:54,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 327 transitions, 4777 flow [2024-06-28 02:12:54,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:12:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:12:54,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 02:12:54,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 02:12:54,104 INFO L175 Difference]: Start difference. First operand has 159 places, 276 transitions, 3539 flow. Second operand 6 states and 156 transitions. [2024-06-28 02:12:54,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 327 transitions, 4777 flow [2024-06-28 02:12:54,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 327 transitions, 4530 flow, removed 93 selfloop flow, removed 5 redundant places. [2024-06-28 02:12:54,687 INFO L231 Difference]: Finished difference. Result has 160 places, 292 transitions, 3808 flow [2024-06-28 02:12:54,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3328, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3808, PETRI_PLACES=160, PETRI_TRANSITIONS=292} [2024-06-28 02:12:54,687 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 107 predicate places. [2024-06-28 02:12:54,687 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 292 transitions, 3808 flow [2024-06-28 02:12:54,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:54,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:54,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:54,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:12:54,688 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:54,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:54,688 INFO L85 PathProgramCache]: Analyzing trace with hash -677786814, now seen corresponding path program 2 times [2024-06-28 02:12:54,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:54,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832233692] [2024-06-28 02:12:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:54,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:55,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:55,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832233692] [2024-06-28 02:12:55,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832233692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:55,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:55,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:55,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740387363] [2024-06-28 02:12:55,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:55,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:55,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:55,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:55,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:55,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:55,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 292 transitions, 3808 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:55,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:55,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:55,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:12:57,611 INFO L124 PetriNetUnfolderBase]: 7915/12736 cut-off events. [2024-06-28 02:12:57,611 INFO L125 PetriNetUnfolderBase]: For 286565/286565 co-relation queries the response was YES. [2024-06-28 02:12:57,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87873 conditions, 12736 events. 7915/12736 cut-off events. For 286565/286565 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 88589 event pairs, 1895 based on Foata normal form. 92/12536 useless extension candidates. Maximal degree in co-relation 87795. Up to 8371 conditions per place. [2024-06-28 02:12:57,734 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 287 selfloop transitions, 67 changer transitions 0/364 dead transitions. [2024-06-28 02:12:57,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 364 transitions, 5218 flow [2024-06-28 02:12:57,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:12:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:12:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-06-28 02:12:57,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910165484633569 [2024-06-28 02:12:57,736 INFO L175 Difference]: Start difference. First operand has 160 places, 292 transitions, 3808 flow. Second operand 9 states and 250 transitions. [2024-06-28 02:12:57,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 364 transitions, 5218 flow [2024-06-28 02:12:58,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 364 transitions, 4990 flow, removed 73 selfloop flow, removed 3 redundant places. [2024-06-28 02:12:58,163 INFO L231 Difference]: Finished difference. Result has 166 places, 295 transitions, 3824 flow [2024-06-28 02:12:58,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3580, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3824, PETRI_PLACES=166, PETRI_TRANSITIONS=295} [2024-06-28 02:12:58,163 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 113 predicate places. [2024-06-28 02:12:58,163 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 295 transitions, 3824 flow [2024-06-28 02:12:58,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:58,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:12:58,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:12:58,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:12:58,164 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:12:58,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:12:58,164 INFO L85 PathProgramCache]: Analyzing trace with hash -382211424, now seen corresponding path program 3 times [2024-06-28 02:12:58,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:12:58,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730091645] [2024-06-28 02:12:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:12:58,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:12:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:12:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:12:58,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:12:58,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730091645] [2024-06-28 02:12:58,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730091645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:12:58,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:12:58,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:12:58,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837239558] [2024-06-28 02:12:58,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:12:58,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:12:58,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:12:58,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:12:58,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:12:58,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:12:58,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 295 transitions, 3824 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:12:58,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:12:58,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:12:58,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:01,734 INFO L124 PetriNetUnfolderBase]: 9518/14984 cut-off events. [2024-06-28 02:13:01,734 INFO L125 PetriNetUnfolderBase]: For 368073/368073 co-relation queries the response was YES. [2024-06-28 02:13:01,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109204 conditions, 14984 events. 9518/14984 cut-off events. For 368073/368073 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 104700 event pairs, 2073 based on Foata normal form. 18/14788 useless extension candidates. Maximal degree in co-relation 109125. Up to 6031 conditions per place. [2024-06-28 02:13:01,888 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 267 selfloop transitions, 101 changer transitions 0/378 dead transitions. [2024-06-28 02:13:01,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 378 transitions, 5582 flow [2024-06-28 02:13:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:13:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:13:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 257 transitions. [2024-06-28 02:13:01,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.607565011820331 [2024-06-28 02:13:01,889 INFO L175 Difference]: Start difference. First operand has 166 places, 295 transitions, 3824 flow. Second operand 9 states and 257 transitions. [2024-06-28 02:13:01,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 378 transitions, 5582 flow [2024-06-28 02:13:02,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 378 transitions, 5418 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 02:13:02,590 INFO L231 Difference]: Finished difference. Result has 169 places, 301 transitions, 4103 flow [2024-06-28 02:13:02,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3660, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4103, PETRI_PLACES=169, PETRI_TRANSITIONS=301} [2024-06-28 02:13:02,591 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-06-28 02:13:02,591 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 301 transitions, 4103 flow [2024-06-28 02:13:02,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:02,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:02,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:02,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:13:02,591 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:02,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:02,592 INFO L85 PathProgramCache]: Analyzing trace with hash -669454944, now seen corresponding path program 4 times [2024-06-28 02:13:02,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:02,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914887718] [2024-06-28 02:13:02,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:02,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:03,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:03,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914887718] [2024-06-28 02:13:03,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914887718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:03,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:03,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:03,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512880010] [2024-06-28 02:13:03,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:03,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:03,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:03,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:03,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:03,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:13:03,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 301 transitions, 4103 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:03,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:03,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:13:03,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:06,521 INFO L124 PetriNetUnfolderBase]: 10190/16608 cut-off events. [2024-06-28 02:13:06,521 INFO L125 PetriNetUnfolderBase]: For 414793/414793 co-relation queries the response was YES. [2024-06-28 02:13:06,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117299 conditions, 16608 events. 10190/16608 cut-off events. For 414793/414793 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 122474 event pairs, 2588 based on Foata normal form. 92/16290 useless extension candidates. Maximal degree in co-relation 117218. Up to 11283 conditions per place. [2024-06-28 02:13:06,696 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 273 selfloop transitions, 99 changer transitions 0/382 dead transitions. [2024-06-28 02:13:06,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 382 transitions, 5656 flow [2024-06-28 02:13:06,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:13:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:13:06,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 280 transitions. [2024-06-28 02:13:06,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5957446808510638 [2024-06-28 02:13:06,698 INFO L175 Difference]: Start difference. First operand has 169 places, 301 transitions, 4103 flow. Second operand 10 states and 280 transitions. [2024-06-28 02:13:06,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 382 transitions, 5656 flow [2024-06-28 02:13:07,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 382 transitions, 5478 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:07,550 INFO L231 Difference]: Finished difference. Result has 174 places, 303 transitions, 4200 flow [2024-06-28 02:13:07,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3925, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4200, PETRI_PLACES=174, PETRI_TRANSITIONS=303} [2024-06-28 02:13:07,551 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-06-28 02:13:07,551 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 303 transitions, 4200 flow [2024-06-28 02:13:07,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:07,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:07,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:07,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:13:07,551 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:07,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash -660577337, now seen corresponding path program 2 times [2024-06-28 02:13:07,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:07,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492778068] [2024-06-28 02:13:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:07,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:07,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:07,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492778068] [2024-06-28 02:13:07,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492778068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:07,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:07,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:13:07,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255601369] [2024-06-28 02:13:07,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:07,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:13:07,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:07,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:13:07,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:13:07,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:13:07,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 303 transitions, 4200 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:07,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:07,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:13:07,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:10,850 INFO L124 PetriNetUnfolderBase]: 10161/16178 cut-off events. [2024-06-28 02:13:10,850 INFO L125 PetriNetUnfolderBase]: For 387877/387877 co-relation queries the response was YES. [2024-06-28 02:13:10,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117599 conditions, 16178 events. 10161/16178 cut-off events. For 387877/387877 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 117224 event pairs, 3631 based on Foata normal form. 7/15913 useless extension candidates. Maximal degree in co-relation 117516. Up to 14503 conditions per place. [2024-06-28 02:13:11,035 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 256 selfloop transitions, 66 changer transitions 0/332 dead transitions. [2024-06-28 02:13:11,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 332 transitions, 5042 flow [2024-06-28 02:13:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:13:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:13:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 02:13:11,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 02:13:11,036 INFO L175 Difference]: Start difference. First operand has 174 places, 303 transitions, 4200 flow. Second operand 6 states and 148 transitions. [2024-06-28 02:13:11,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 332 transitions, 5042 flow [2024-06-28 02:13:11,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 332 transitions, 4668 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-06-28 02:13:11,906 INFO L231 Difference]: Finished difference. Result has 172 places, 303 transitions, 3990 flow [2024-06-28 02:13:11,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3830, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3990, PETRI_PLACES=172, PETRI_TRANSITIONS=303} [2024-06-28 02:13:11,907 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 119 predicate places. [2024-06-28 02:13:11,907 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 303 transitions, 3990 flow [2024-06-28 02:13:11,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:11,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:11,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:11,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:13:11,907 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:11,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:11,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2040869852, now seen corresponding path program 1 times [2024-06-28 02:13:11,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:11,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000902975] [2024-06-28 02:13:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:11,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:12,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:12,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000902975] [2024-06-28 02:13:12,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000902975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:12,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:12,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:12,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672608468] [2024-06-28 02:13:12,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:12,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:12,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:12,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:12,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:12,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:13:12,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 303 transitions, 3990 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:12,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:12,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:13:12,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:15,275 INFO L124 PetriNetUnfolderBase]: 10175/16880 cut-off events. [2024-06-28 02:13:15,276 INFO L125 PetriNetUnfolderBase]: For 364892/364892 co-relation queries the response was YES. [2024-06-28 02:13:15,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114992 conditions, 16880 events. 10175/16880 cut-off events. For 364892/364892 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 128280 event pairs, 3397 based on Foata normal form. 2/16399 useless extension candidates. Maximal degree in co-relation 114908. Up to 14735 conditions per place. [2024-06-28 02:13:15,460 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 297 selfloop transitions, 23 changer transitions 0/330 dead transitions. [2024-06-28 02:13:15,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 330 transitions, 4850 flow [2024-06-28 02:13:15,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 02:13:15,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-28 02:13:15,461 INFO L175 Difference]: Start difference. First operand has 172 places, 303 transitions, 3990 flow. Second operand 7 states and 160 transitions. [2024-06-28 02:13:15,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 330 transitions, 4850 flow [2024-06-28 02:13:15,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 330 transitions, 4651 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:15,997 INFO L231 Difference]: Finished difference. Result has 174 places, 308 transitions, 3910 flow [2024-06-28 02:13:15,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3910, PETRI_PLACES=174, PETRI_TRANSITIONS=308} [2024-06-28 02:13:15,997 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-06-28 02:13:15,998 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 308 transitions, 3910 flow [2024-06-28 02:13:15,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:15,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:15,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:15,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:13:15,998 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:15,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash -660570362, now seen corresponding path program 2 times [2024-06-28 02:13:15,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:15,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688726367] [2024-06-28 02:13:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:16,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:16,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688726367] [2024-06-28 02:13:16,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688726367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:16,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:16,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:13:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273682236] [2024-06-28 02:13:16,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:16,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:13:16,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:16,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:13:16,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:13:16,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:13:16,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 308 transitions, 3910 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:16,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:16,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:13:16,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:19,343 INFO L124 PetriNetUnfolderBase]: 10136/16088 cut-off events. [2024-06-28 02:13:19,344 INFO L125 PetriNetUnfolderBase]: For 362351/362351 co-relation queries the response was YES. [2024-06-28 02:13:19,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113856 conditions, 16088 events. 10136/16088 cut-off events. For 362351/362351 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 115962 event pairs, 3673 based on Foata normal form. 1/15835 useless extension candidates. Maximal degree in co-relation 113770. Up to 14745 conditions per place. [2024-06-28 02:13:19,510 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 299 selfloop transitions, 15 changer transitions 0/324 dead transitions. [2024-06-28 02:13:19,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 324 transitions, 4608 flow [2024-06-28 02:13:19,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-28 02:13:19,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45896656534954405 [2024-06-28 02:13:19,511 INFO L175 Difference]: Start difference. First operand has 174 places, 308 transitions, 3910 flow. Second operand 7 states and 151 transitions. [2024-06-28 02:13:19,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 324 transitions, 4608 flow [2024-06-28 02:13:20,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 324 transitions, 4571 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:13:20,109 INFO L231 Difference]: Finished difference. Result has 178 places, 308 transitions, 3909 flow [2024-06-28 02:13:20,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3873, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3909, PETRI_PLACES=178, PETRI_TRANSITIONS=308} [2024-06-28 02:13:20,110 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 125 predicate places. [2024-06-28 02:13:20,110 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 308 transitions, 3909 flow [2024-06-28 02:13:20,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:20,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:20,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:20,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:13:20,110 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:20,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash 999686189, now seen corresponding path program 1 times [2024-06-28 02:13:20,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:20,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826073193] [2024-06-28 02:13:20,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:20,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:20,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:20,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826073193] [2024-06-28 02:13:20,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826073193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:20,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:20,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:20,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713445306] [2024-06-28 02:13:20,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:20,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:20,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:20,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:20,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:21,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:13:21,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 308 transitions, 3909 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:21,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:21,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:13:21,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:23,895 INFO L124 PetriNetUnfolderBase]: 10173/16167 cut-off events. [2024-06-28 02:13:23,896 INFO L125 PetriNetUnfolderBase]: For 374351/374351 co-relation queries the response was YES. [2024-06-28 02:13:23,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114622 conditions, 16167 events. 10173/16167 cut-off events. For 374351/374351 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 116475 event pairs, 3311 based on Foata normal form. 4/15911 useless extension candidates. Maximal degree in co-relation 114535. Up to 14686 conditions per place. [2024-06-28 02:13:24,063 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 322 selfloop transitions, 23 changer transitions 0/355 dead transitions. [2024-06-28 02:13:24,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 355 transitions, 4851 flow [2024-06-28 02:13:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:13:24,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 02:13:24,065 INFO L175 Difference]: Start difference. First operand has 178 places, 308 transitions, 3909 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:13:24,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 355 transitions, 4851 flow [2024-06-28 02:13:24,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 355 transitions, 4790 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 02:13:24,817 INFO L231 Difference]: Finished difference. Result has 180 places, 313 transitions, 4010 flow [2024-06-28 02:13:24,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3848, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4010, PETRI_PLACES=180, PETRI_TRANSITIONS=313} [2024-06-28 02:13:24,818 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 127 predicate places. [2024-06-28 02:13:24,818 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 313 transitions, 4010 flow [2024-06-28 02:13:24,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:24,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:24,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:24,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:13:24,818 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:24,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:24,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1002572909, now seen corresponding path program 2 times [2024-06-28 02:13:24,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:24,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610983565] [2024-06-28 02:13:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:24,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:25,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:25,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610983565] [2024-06-28 02:13:25,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610983565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:25,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:25,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:25,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570524649] [2024-06-28 02:13:25,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:25,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:25,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:25,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:25,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:25,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:13:25,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 313 transitions, 4010 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:25,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:25,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:13:25,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:28,555 INFO L124 PetriNetUnfolderBase]: 10210/16198 cut-off events. [2024-06-28 02:13:28,555 INFO L125 PetriNetUnfolderBase]: For 394860/394860 co-relation queries the response was YES. [2024-06-28 02:13:28,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116471 conditions, 16198 events. 10210/16198 cut-off events. For 394860/394860 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 116813 event pairs, 3572 based on Foata normal form. 4/15948 useless extension candidates. Maximal degree in co-relation 116383. Up to 14753 conditions per place. [2024-06-28 02:13:28,745 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 323 selfloop transitions, 25 changer transitions 0/358 dead transitions. [2024-06-28 02:13:28,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 358 transitions, 4958 flow [2024-06-28 02:13:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:28,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 02:13:28,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 02:13:28,746 INFO L175 Difference]: Start difference. First operand has 180 places, 313 transitions, 4010 flow. Second operand 8 states and 197 transitions. [2024-06-28 02:13:28,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 358 transitions, 4958 flow [2024-06-28 02:13:29,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 358 transitions, 4842 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:29,590 INFO L231 Difference]: Finished difference. Result has 183 places, 315 transitions, 4024 flow [2024-06-28 02:13:29,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3894, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4024, PETRI_PLACES=183, PETRI_TRANSITIONS=315} [2024-06-28 02:13:29,590 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 130 predicate places. [2024-06-28 02:13:29,590 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 315 transitions, 4024 flow [2024-06-28 02:13:29,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:29,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:29,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:29,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:13:29,591 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:29,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:29,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1002578861, now seen corresponding path program 1 times [2024-06-28 02:13:29,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:29,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577724546] [2024-06-28 02:13:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:29,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:30,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:30,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577724546] [2024-06-28 02:13:30,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577724546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:30,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:30,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:30,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72328942] [2024-06-28 02:13:30,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:30,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:30,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:30,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:13:30,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 315 transitions, 4024 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:30,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:30,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:13:30,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:33,735 INFO L124 PetriNetUnfolderBase]: 10365/16469 cut-off events. [2024-06-28 02:13:33,736 INFO L125 PetriNetUnfolderBase]: For 418367/418367 co-relation queries the response was YES. [2024-06-28 02:13:33,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119133 conditions, 16469 events. 10365/16469 cut-off events. For 418367/418367 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 119263 event pairs, 3485 based on Foata normal form. 5/16210 useless extension candidates. Maximal degree in co-relation 119044. Up to 14485 conditions per place. [2024-06-28 02:13:34,119 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 276 selfloop transitions, 108 changer transitions 0/394 dead transitions. [2024-06-28 02:13:34,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 394 transitions, 5738 flow [2024-06-28 02:13:34,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:13:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:13:34,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-06-28 02:13:34,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2024-06-28 02:13:34,133 INFO L175 Difference]: Start difference. First operand has 183 places, 315 transitions, 4024 flow. Second operand 10 states and 265 transitions. [2024-06-28 02:13:34,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 394 transitions, 5738 flow [2024-06-28 02:13:34,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 394 transitions, 5628 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 02:13:34,894 INFO L231 Difference]: Finished difference. Result has 189 places, 333 transitions, 4675 flow [2024-06-28 02:13:34,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3914, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4675, PETRI_PLACES=189, PETRI_TRANSITIONS=333} [2024-06-28 02:13:34,894 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 136 predicate places. [2024-06-28 02:13:34,894 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 333 transitions, 4675 flow [2024-06-28 02:13:34,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:34,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:34,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:34,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:13:34,895 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:34,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:34,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1996465787, now seen corresponding path program 3 times [2024-06-28 02:13:34,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:34,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47298107] [2024-06-28 02:13:34,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:34,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:35,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:35,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47298107] [2024-06-28 02:13:35,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47298107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:35,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:35,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:13:35,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046370167] [2024-06-28 02:13:35,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:35,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:13:35,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:35,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:13:35,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:13:35,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:13:35,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 333 transitions, 4675 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:35,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:35,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:13:35,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:38,776 INFO L124 PetriNetUnfolderBase]: 10402/16589 cut-off events. [2024-06-28 02:13:38,777 INFO L125 PetriNetUnfolderBase]: For 454971/454971 co-relation queries the response was YES. [2024-06-28 02:13:38,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124033 conditions, 16589 events. 10402/16589 cut-off events. For 454971/454971 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 120375 event pairs, 3570 based on Foata normal form. 4/16314 useless extension candidates. Maximal degree in co-relation 123941. Up to 15054 conditions per place. [2024-06-28 02:13:38,996 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 350 selfloop transitions, 19 changer transitions 0/379 dead transitions. [2024-06-28 02:13:38,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 379 transitions, 5702 flow [2024-06-28 02:13:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:13:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:13:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 02:13:38,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 02:13:38,997 INFO L175 Difference]: Start difference. First operand has 189 places, 333 transitions, 4675 flow. Second operand 8 states and 195 transitions. [2024-06-28 02:13:38,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 379 transitions, 5702 flow [2024-06-28 02:13:40,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 379 transitions, 5378 flow, removed 122 selfloop flow, removed 5 redundant places. [2024-06-28 02:13:40,210 INFO L231 Difference]: Finished difference. Result has 193 places, 337 transitions, 4497 flow [2024-06-28 02:13:40,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4351, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4497, PETRI_PLACES=193, PETRI_TRANSITIONS=337} [2024-06-28 02:13:40,211 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 140 predicate places. [2024-06-28 02:13:40,211 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 337 transitions, 4497 flow [2024-06-28 02:13:40,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:40,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:40,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:40,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:13:40,212 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:40,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:40,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1319727085, now seen corresponding path program 2 times [2024-06-28 02:13:40,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:40,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314354800] [2024-06-28 02:13:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:40,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:41,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:41,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314354800] [2024-06-28 02:13:41,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314354800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:41,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:41,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:13:41,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780798836] [2024-06-28 02:13:41,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:41,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:13:41,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:41,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:13:41,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:13:41,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 02:13:41,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 337 transitions, 4497 flow. Second operand has 10 states, 10 states have (on average 14.3) internal successors, (143), 10 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:41,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:41,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 02:13:41,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand