./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:03:27,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:03:27,806 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:03:27,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:03:27,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:03:27,835 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:03:27,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:03:27,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:03:27,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:03:27,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:03:27,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:03:27,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:03:27,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:03:27,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:03:27,842 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:03:27,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:03:27,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:03:27,842 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:03:27,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:03:27,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:03:27,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:03:27,844 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:03:27,844 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:03:27,844 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:03:27,844 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:03:27,844 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:03:27,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:03:27,845 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:03:27,845 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:03:27,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:03:27,846 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:03:27,846 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:03:27,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:03:27,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:03:27,847 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:03:27,847 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:03:27,847 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:03:27,847 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:03:27,847 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:03:27,847 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:03:27,847 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:03:27,848 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:03:27,848 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:03:27,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 02:03:28,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:03:28,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:03:28,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:03:28,037 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:03:28,037 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:03:28,038 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 02:03:28,229 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:03:28,229 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:03:28,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:03:29,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:03:29,435 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:03:29,436 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:03:29,458 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a86653fbc/705133989d4a4e5694248bc3196ecbfd/FLAG320b79222 [2024-06-28 02:03:29,471 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a86653fbc/705133989d4a4e5694248bc3196ecbfd [2024-06-28 02:03:29,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:03:29,473 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:03:29,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:03:29,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:03:29,478 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:03:29,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:03:28" (1/2) ... [2024-06-28 02:03:29,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5601ac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:03:29, skipping insertion in model container [2024-06-28 02:03:29,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:03:28" (1/2) ... [2024-06-28 02:03:29,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5e9a7ca1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:03:29, skipping insertion in model container [2024-06-28 02:03:29,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:03:29" (2/2) ... [2024-06-28 02:03:29,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5601ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:29, skipping insertion in model container [2024-06-28 02:03:29,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:03:29" (2/2) ... [2024-06-28 02:03:29,482 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:03:29,542 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:03:29,543 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] (((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 02:03:29,543 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] (((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 02:03:29,543 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] (((((((((((((((! multithreaded || y$r_buff1_thd3 == (_Bool)0) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) [2024-06-28 02:03:29,543 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:03:29,543 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-28 02:03:29,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:03:29,739 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/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] [2024-06-28 02:03:29,936 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:03:29,945 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 02:03:29,980 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/safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:03:30,042 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:03:30,077 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:03:30,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30 WrapperNode [2024-06-28 02:03:30,077 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:03:30,078 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:03:30,078 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:03:30,079 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:03:30,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,096 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,122 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 138 [2024-06-28 02:03:30,123 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:03:30,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:03:30,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:03:30,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:03:30,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,143 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,160 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 02:03:30,161 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:03:30,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:03:30,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:03:30,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:03:30,177 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (1/1) ... [2024-06-28 02:03:30,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:03:30,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:03:30,214 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 02:03:30,222 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 02:03:30,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:03:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:03:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:03:30,246 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:03:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:03:30,246 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:03:30,246 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:03:30,247 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:03:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:03:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:03:30,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:03:30,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:03:30,248 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 02:03:30,342 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:03:30,344 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:03:30,638 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:03:30,638 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:03:30,753 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:03:30,754 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:03:30,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:03:30 BoogieIcfgContainer [2024-06-28 02:03:30,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:03:30,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:03:30,756 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:03:30,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:03:30,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:03:28" (1/4) ... [2024-06-28 02:03:30,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dca01f2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:03:30, skipping insertion in model container [2024-06-28 02:03:30,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:03:29" (2/4) ... [2024-06-28 02:03:30,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dca01f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:03:30, skipping insertion in model container [2024-06-28 02:03:30,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:03:30" (3/4) ... [2024-06-28 02:03:30,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dca01f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:03:30, skipping insertion in model container [2024-06-28 02:03:30,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:03:30" (4/4) ... [2024-06-28 02:03:30,761 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-28 02:03:30,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:03:30,775 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 02:03:30,775 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:03:30,811 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:03:30,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 45 transitions, 102 flow [2024-06-28 02:03:30,858 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-06-28 02:03:30,858 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:03:30,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-06-28 02:03:30,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 45 transitions, 102 flow [2024-06-28 02:03:30,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 42 transitions, 93 flow [2024-06-28 02:03:30,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:03:30,875 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;@68085acd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:03:30,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 02:03:30,878 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:03:30,878 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:03:30,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:03:30,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:30,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:03:30,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:30,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:30,884 INFO L85 PathProgramCache]: Analyzing trace with hash 349895316, now seen corresponding path program 1 times [2024-06-28 02:03:30,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:30,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907344523] [2024-06-28 02:03:30,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:30,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:31,737 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 02:03:31,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:31,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907344523] [2024-06-28 02:03:31,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907344523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:31,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:31,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:03:31,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7195014] [2024-06-28 02:03:31,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:31,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:03:31,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:31,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:03:31,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:03:31,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-28 02:03:31,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:31,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:31,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-28 02:03:31,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:32,455 INFO L124 PetriNetUnfolderBase]: 3513/5611 cut-off events. [2024-06-28 02:03:32,456 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 02:03:32,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10781 conditions, 5611 events. 3513/5611 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 33964 event pairs, 2751 based on Foata normal form. 176/5345 useless extension candidates. Maximal degree in co-relation 10769. Up to 5066 conditions per place. [2024-06-28 02:03:32,488 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 42 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 02:03:32,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 223 flow [2024-06-28 02:03:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:03:32,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:03:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-06-28 02:03:32,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2024-06-28 02:03:32,498 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 93 flow. Second operand 3 states and 91 transitions. [2024-06-28 02:03:32,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 223 flow [2024-06-28 02:03:32,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:03:32,505 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 125 flow [2024-06-28 02:03:32,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-28 02:03:32,511 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-28 02:03:32,511 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 125 flow [2024-06-28 02:03:32,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:32,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:32,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:03:32,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:03:32,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:32,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:32,512 INFO L85 PathProgramCache]: Analyzing trace with hash 349895541, now seen corresponding path program 1 times [2024-06-28 02:03:32,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:32,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811994436] [2024-06-28 02:03:32,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:32,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:32,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:32,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811994436] [2024-06-28 02:03:32,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811994436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:32,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:32,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:03:32,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078102920] [2024-06-28 02:03:32,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:32,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:03:32,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:32,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:03:32,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:03:32,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 45 [2024-06-28 02:03:32,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:32,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:32,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 45 [2024-06-28 02:03:32,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:32,830 INFO L124 PetriNetUnfolderBase]: 891/1706 cut-off events. [2024-06-28 02:03:32,830 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2024-06-28 02:03:32,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3311 conditions, 1706 events. 891/1706 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11361 event pairs, 577 based on Foata normal form. 0/1567 useless extension candidates. Maximal degree in co-relation 3299. Up to 1152 conditions per place. [2024-06-28 02:03:32,840 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 35 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2024-06-28 02:03:32,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 228 flow [2024-06-28 02:03:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:03:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:03:32,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-28 02:03:32,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7703703703703704 [2024-06-28 02:03:32,844 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 125 flow. Second operand 3 states and 104 transitions. [2024-06-28 02:03:32,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 228 flow [2024-06-28 02:03:32,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:03:32,846 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 118 flow [2024-06-28 02:03:32,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-06-28 02:03:32,847 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2024-06-28 02:03:32,848 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 118 flow [2024-06-28 02:03:32,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:32,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:32,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:32,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:03:32,851 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:32,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1241996946, now seen corresponding path program 1 times [2024-06-28 02:03:32,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:32,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203286001] [2024-06-28 02:03:32,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:32,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:33,272 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 02:03:33,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:33,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203286001] [2024-06-28 02:03:33,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203286001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:33,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:33,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:03:33,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825831883] [2024-06-28 02:03:33,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:33,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:03:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:33,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:03:33,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:03:33,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-28 02:03:33,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:33,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:33,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-28 02:03:33,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:33,734 INFO L124 PetriNetUnfolderBase]: 2986/4789 cut-off events. [2024-06-28 02:03:33,734 INFO L125 PetriNetUnfolderBase]: For 1152/1160 co-relation queries the response was YES. [2024-06-28 02:03:33,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10326 conditions, 4789 events. 2986/4789 cut-off events. For 1152/1160 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 28355 event pairs, 1953 based on Foata normal form. 6/4642 useless extension candidates. Maximal degree in co-relation 10313. Up to 4299 conditions per place. [2024-06-28 02:03:33,754 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 50 selfloop transitions, 8 changer transitions 2/70 dead transitions. [2024-06-28 02:03:33,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 70 transitions, 312 flow [2024-06-28 02:03:33,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:03:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:03:33,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-06-28 02:03:33,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-06-28 02:03:33,756 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 118 flow. Second operand 4 states and 112 transitions. [2024-06-28 02:03:33,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 70 transitions, 312 flow [2024-06-28 02:03:33,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:03:33,758 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 179 flow [2024-06-28 02:03:33,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-28 02:03:33,758 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2024-06-28 02:03:33,758 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 179 flow [2024-06-28 02:03:33,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:33,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:33,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:33,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:03:33,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:33,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:33,759 INFO L85 PathProgramCache]: Analyzing trace with hash -152798767, now seen corresponding path program 1 times [2024-06-28 02:03:33,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:33,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213770909] [2024-06-28 02:03:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:33,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:34,143 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 02:03:34,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:34,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213770909] [2024-06-28 02:03:34,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213770909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:34,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:34,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:03:34,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393295179] [2024-06-28 02:03:34,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:34,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:03:34,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:34,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:03:34,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:03:34,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-28 02:03:34,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:34,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:34,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-28 02:03:34,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:34,704 INFO L124 PetriNetUnfolderBase]: 3269/5289 cut-off events. [2024-06-28 02:03:34,704 INFO L125 PetriNetUnfolderBase]: For 2150/2150 co-relation queries the response was YES. [2024-06-28 02:03:34,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12242 conditions, 5289 events. 3269/5289 cut-off events. For 2150/2150 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 31795 event pairs, 1574 based on Foata normal form. 7/5107 useless extension candidates. Maximal degree in co-relation 12227. Up to 4520 conditions per place. [2024-06-28 02:03:34,728 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 77 selfloop transitions, 16 changer transitions 0/102 dead transitions. [2024-06-28 02:03:34,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 102 transitions, 535 flow [2024-06-28 02:03:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:03:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:03:34,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-06-28 02:03:34,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6355555555555555 [2024-06-28 02:03:34,730 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 179 flow. Second operand 5 states and 143 transitions. [2024-06-28 02:03:34,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 102 transitions, 535 flow [2024-06-28 02:03:34,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 102 transitions, 518 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 02:03:34,733 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 299 flow [2024-06-28 02:03:34,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2024-06-28 02:03:34,733 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2024-06-28 02:03:34,733 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 299 flow [2024-06-28 02:03:34,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:34,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:34,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:34,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:03:34,734 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:34,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash -441792879, now seen corresponding path program 1 times [2024-06-28 02:03:34,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:34,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367439203] [2024-06-28 02:03:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:34,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:35,384 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 02:03:35,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:35,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367439203] [2024-06-28 02:03:35,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367439203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:35,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:35,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:03:35,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727069979] [2024-06-28 02:03:35,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:35,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:03:35,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:03:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:03:35,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-28 02:03:35,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 64 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:35,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:35,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-28 02:03:35,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:36,141 INFO L124 PetriNetUnfolderBase]: 3311/5360 cut-off events. [2024-06-28 02:03:36,142 INFO L125 PetriNetUnfolderBase]: For 5422/5424 co-relation queries the response was YES. [2024-06-28 02:03:36,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14781 conditions, 5360 events. 3311/5360 cut-off events. For 5422/5424 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 31944 event pairs, 1496 based on Foata normal form. 7/5175 useless extension candidates. Maximal degree in co-relation 14762. Up to 4479 conditions per place. [2024-06-28 02:03:36,173 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 101 selfloop transitions, 33 changer transitions 0/143 dead transitions. [2024-06-28 02:03:36,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 143 transitions, 899 flow [2024-06-28 02:03:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:36,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-06-28 02:03:36,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6370370370370371 [2024-06-28 02:03:36,175 INFO L175 Difference]: Start difference. First operand has 59 places, 64 transitions, 299 flow. Second operand 6 states and 172 transitions. [2024-06-28 02:03:36,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 143 transitions, 899 flow [2024-06-28 02:03:36,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 143 transitions, 891 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-28 02:03:36,181 INFO L231 Difference]: Finished difference. Result has 68 places, 93 transitions, 585 flow [2024-06-28 02:03:36,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=585, PETRI_PLACES=68, PETRI_TRANSITIONS=93} [2024-06-28 02:03:36,182 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2024-06-28 02:03:36,182 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 93 transitions, 585 flow [2024-06-28 02:03:36,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:36,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:36,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:36,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:03:36,182 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:36,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:36,183 INFO L85 PathProgramCache]: Analyzing trace with hash -810675728, now seen corresponding path program 1 times [2024-06-28 02:03:36,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:36,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685268252] [2024-06-28 02:03:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:36,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:36,903 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 02:03:36,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:36,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685268252] [2024-06-28 02:03:36,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685268252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:36,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:36,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:03:36,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573727351] [2024-06-28 02:03:36,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:36,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:03:36,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:36,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:03:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:03:36,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-28 02:03:36,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 93 transitions, 585 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:36,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:36,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-28 02:03:36,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:37,633 INFO L124 PetriNetUnfolderBase]: 3449/5582 cut-off events. [2024-06-28 02:03:37,634 INFO L125 PetriNetUnfolderBase]: For 10839/10845 co-relation queries the response was YES. [2024-06-28 02:03:37,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18165 conditions, 5582 events. 3449/5582 cut-off events. For 10839/10845 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 33788 event pairs, 897 based on Foata normal form. 28/5418 useless extension candidates. Maximal degree in co-relation 18140. Up to 4459 conditions per place. [2024-06-28 02:03:37,666 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 111 selfloop transitions, 36 changer transitions 0/156 dead transitions. [2024-06-28 02:03:37,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 156 transitions, 1135 flow [2024-06-28 02:03:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-28 02:03:37,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6253968253968254 [2024-06-28 02:03:37,668 INFO L175 Difference]: Start difference. First operand has 68 places, 93 transitions, 585 flow. Second operand 7 states and 197 transitions. [2024-06-28 02:03:37,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 156 transitions, 1135 flow [2024-06-28 02:03:37,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 156 transitions, 1125 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 02:03:37,677 INFO L231 Difference]: Finished difference. Result has 74 places, 95 transitions, 674 flow [2024-06-28 02:03:37,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=674, PETRI_PLACES=74, PETRI_TRANSITIONS=95} [2024-06-28 02:03:37,677 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2024-06-28 02:03:37,677 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 95 transitions, 674 flow [2024-06-28 02:03:37,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:37,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:37,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:37,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:03:37,678 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:37,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:37,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1852285598, now seen corresponding path program 1 times [2024-06-28 02:03:37,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:37,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809000269] [2024-06-28 02:03:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:37,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:03:38,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:38,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809000269] [2024-06-28 02:03:38,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809000269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:38,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:38,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:03:38,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115707833] [2024-06-28 02:03:38,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:38,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:03:38,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:03:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:03:38,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:38,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 95 transitions, 674 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:38,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:38,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:38,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:38,843 INFO L124 PetriNetUnfolderBase]: 3924/6239 cut-off events. [2024-06-28 02:03:38,843 INFO L125 PetriNetUnfolderBase]: For 14801/14801 co-relation queries the response was YES. [2024-06-28 02:03:38,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21516 conditions, 6239 events. 3924/6239 cut-off events. For 14801/14801 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 36802 event pairs, 1539 based on Foata normal form. 4/6054 useless extension candidates. Maximal degree in co-relation 21487. Up to 5619 conditions per place. [2024-06-28 02:03:38,874 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 99 selfloop transitions, 18 changer transitions 0/124 dead transitions. [2024-06-28 02:03:38,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 124 transitions, 1034 flow [2024-06-28 02:03:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:03:38,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:03:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-28 02:03:38,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-06-28 02:03:38,876 INFO L175 Difference]: Start difference. First operand has 74 places, 95 transitions, 674 flow. Second operand 5 states and 111 transitions. [2024-06-28 02:03:38,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 124 transitions, 1034 flow [2024-06-28 02:03:38,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 124 transitions, 953 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:38,886 INFO L231 Difference]: Finished difference. Result has 75 places, 104 transitions, 735 flow [2024-06-28 02:03:38,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=735, PETRI_PLACES=75, PETRI_TRANSITIONS=104} [2024-06-28 02:03:38,887 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 24 predicate places. [2024-06-28 02:03:38,887 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 104 transitions, 735 flow [2024-06-28 02:03:38,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:38,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:38,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:38,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:03:38,888 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:38,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1184893310, now seen corresponding path program 1 times [2024-06-28 02:03:38,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:38,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290130348] [2024-06-28 02:03:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:38,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:39,426 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 02:03:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:39,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290130348] [2024-06-28 02:03:39,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290130348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:39,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:39,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:03:39,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682629321] [2024-06-28 02:03:39,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:39,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:03:39,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:39,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:03:39,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:03:39,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:39,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 104 transitions, 735 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:39,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:39,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:39,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:40,235 INFO L124 PetriNetUnfolderBase]: 3966/6302 cut-off events. [2024-06-28 02:03:40,235 INFO L125 PetriNetUnfolderBase]: For 17476/17478 co-relation queries the response was YES. [2024-06-28 02:03:40,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22331 conditions, 6302 events. 3966/6302 cut-off events. For 17476/17478 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 37327 event pairs, 1246 based on Foata normal form. 10/6122 useless extension candidates. Maximal degree in co-relation 22299. Up to 5467 conditions per place. [2024-06-28 02:03:40,297 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 109 selfloop transitions, 30 changer transitions 0/146 dead transitions. [2024-06-28 02:03:40,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 146 transitions, 1194 flow [2024-06-28 02:03:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-28 02:03:40,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-28 02:03:40,313 INFO L175 Difference]: Start difference. First operand has 75 places, 104 transitions, 735 flow. Second operand 6 states and 141 transitions. [2024-06-28 02:03:40,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 146 transitions, 1194 flow [2024-06-28 02:03:40,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 146 transitions, 1182 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 02:03:40,345 INFO L231 Difference]: Finished difference. Result has 81 places, 111 transitions, 877 flow [2024-06-28 02:03:40,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=877, PETRI_PLACES=81, PETRI_TRANSITIONS=111} [2024-06-28 02:03:40,346 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 30 predicate places. [2024-06-28 02:03:40,346 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 111 transitions, 877 flow [2024-06-28 02:03:40,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:40,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:40,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:40,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:03:40,346 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:40,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1929970016, now seen corresponding path program 2 times [2024-06-28 02:03:40,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:40,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246177739] [2024-06-28 02:03:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:40,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:40,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:40,832 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 02:03:40,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:40,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246177739] [2024-06-28 02:03:40,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246177739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:40,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:40,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:03:40,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045176797] [2024-06-28 02:03:40,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:40,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:03:40,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:40,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:03:40,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:03:40,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:40,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 111 transitions, 877 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:40,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:40,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:40,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:41,718 INFO L124 PetriNetUnfolderBase]: 3943/6269 cut-off events. [2024-06-28 02:03:41,719 INFO L125 PetriNetUnfolderBase]: For 19289/19289 co-relation queries the response was YES. [2024-06-28 02:03:41,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22778 conditions, 6269 events. 3943/6269 cut-off events. For 19289/19289 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 36943 event pairs, 1518 based on Foata normal form. 4/6081 useless extension candidates. Maximal degree in co-relation 22742. Up to 5633 conditions per place. [2024-06-28 02:03:41,750 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 115 selfloop transitions, 16 changer transitions 0/138 dead transitions. [2024-06-28 02:03:41,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 1227 flow [2024-06-28 02:03:41,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:41,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-28 02:03:41,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 02:03:41,751 INFO L175 Difference]: Start difference. First operand has 81 places, 111 transitions, 877 flow. Second operand 6 states and 129 transitions. [2024-06-28 02:03:41,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 1227 flow [2024-06-28 02:03:41,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 138 transitions, 1189 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 02:03:41,764 INFO L231 Difference]: Finished difference. Result has 84 places, 113 transitions, 907 flow [2024-06-28 02:03:41,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=907, PETRI_PLACES=84, PETRI_TRANSITIONS=113} [2024-06-28 02:03:41,765 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 33 predicate places. [2024-06-28 02:03:41,765 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 113 transitions, 907 flow [2024-06-28 02:03:41,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:41,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:41,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:41,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:03:41,766 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:41,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:41,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1191538687, now seen corresponding path program 1 times [2024-06-28 02:03:41,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:41,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539233620] [2024-06-28 02:03:41,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:41,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:42,530 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 02:03:42,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:42,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539233620] [2024-06-28 02:03:42,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539233620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:42,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:42,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:42,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529568961] [2024-06-28 02:03:42,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:42,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:42,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:42,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:42,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:42,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:42,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 113 transitions, 907 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:42,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:42,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:42,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:43,337 INFO L124 PetriNetUnfolderBase]: 3935/6257 cut-off events. [2024-06-28 02:03:43,337 INFO L125 PetriNetUnfolderBase]: For 20676/20676 co-relation queries the response was YES. [2024-06-28 02:03:43,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22823 conditions, 6257 events. 3935/6257 cut-off events. For 20676/20676 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 36861 event pairs, 1470 based on Foata normal form. 4/6069 useless extension candidates. Maximal degree in co-relation 22786. Up to 5590 conditions per place. [2024-06-28 02:03:43,377 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 118 selfloop transitions, 20 changer transitions 0/145 dead transitions. [2024-06-28 02:03:43,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 145 transitions, 1288 flow [2024-06-28 02:03:43,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:43,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:43,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 02:03:43,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925925925925926 [2024-06-28 02:03:43,379 INFO L175 Difference]: Start difference. First operand has 84 places, 113 transitions, 907 flow. Second operand 6 states and 133 transitions. [2024-06-28 02:03:43,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 145 transitions, 1288 flow [2024-06-28 02:03:43,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 145 transitions, 1255 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:03:43,399 INFO L231 Difference]: Finished difference. Result has 87 places, 115 transitions, 946 flow [2024-06-28 02:03:43,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=946, PETRI_PLACES=87, PETRI_TRANSITIONS=115} [2024-06-28 02:03:43,400 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2024-06-28 02:03:43,401 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 115 transitions, 946 flow [2024-06-28 02:03:43,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:43,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:43,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:43,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:03:43,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:43,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:43,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1717015007, now seen corresponding path program 1 times [2024-06-28 02:03:43,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:43,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181576374] [2024-06-28 02:03:43,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:43,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:44,018 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 02:03:44,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:44,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181576374] [2024-06-28 02:03:44,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181576374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:44,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:44,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:44,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517299503] [2024-06-28 02:03:44,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:44,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:44,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:44,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:44,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:44,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:44,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 115 transitions, 946 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:44,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:44,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:44,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:44,747 INFO L124 PetriNetUnfolderBase]: 3946/6278 cut-off events. [2024-06-28 02:03:44,747 INFO L125 PetriNetUnfolderBase]: For 23458/23458 co-relation queries the response was YES. [2024-06-28 02:03:44,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23439 conditions, 6278 events. 3946/6278 cut-off events. For 23458/23458 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 37098 event pairs, 1519 based on Foata normal form. 2/6086 useless extension candidates. Maximal degree in co-relation 23401. Up to 5581 conditions per place. [2024-06-28 02:03:44,784 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 114 selfloop transitions, 30 changer transitions 0/151 dead transitions. [2024-06-28 02:03:44,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 151 transitions, 1372 flow [2024-06-28 02:03:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:44,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 02:03:44,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-06-28 02:03:44,786 INFO L175 Difference]: Start difference. First operand has 87 places, 115 transitions, 946 flow. Second operand 6 states and 134 transitions. [2024-06-28 02:03:44,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 151 transitions, 1372 flow [2024-06-28 02:03:44,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 151 transitions, 1326 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 02:03:44,805 INFO L231 Difference]: Finished difference. Result has 89 places, 121 transitions, 1043 flow [2024-06-28 02:03:44,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1043, PETRI_PLACES=89, PETRI_TRANSITIONS=121} [2024-06-28 02:03:44,805 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 38 predicate places. [2024-06-28 02:03:44,805 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 121 transitions, 1043 flow [2024-06-28 02:03:44,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:44,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:44,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:44,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:03:44,806 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:44,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:44,806 INFO L85 PathProgramCache]: Analyzing trace with hash -468287087, now seen corresponding path program 1 times [2024-06-28 02:03:44,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:44,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321139267] [2024-06-28 02:03:44,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:44,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:45,452 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 02:03:45,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:45,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321139267] [2024-06-28 02:03:45,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321139267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:45,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:45,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:45,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136948727] [2024-06-28 02:03:45,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:45,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:45,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:45,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:45,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:45,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:45,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 121 transitions, 1043 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:45,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:45,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:45,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:46,219 INFO L124 PetriNetUnfolderBase]: 3988/6340 cut-off events. [2024-06-28 02:03:46,220 INFO L125 PetriNetUnfolderBase]: For 27869/27878 co-relation queries the response was YES. [2024-06-28 02:03:46,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24593 conditions, 6340 events. 3988/6340 cut-off events. For 27869/27878 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 37716 event pairs, 1150 based on Foata normal form. 10/6156 useless extension candidates. Maximal degree in co-relation 24554. Up to 5336 conditions per place. [2024-06-28 02:03:46,257 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 126 selfloop transitions, 44 changer transitions 0/177 dead transitions. [2024-06-28 02:03:46,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 177 transitions, 1693 flow [2024-06-28 02:03:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:46,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 02:03:46,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 02:03:46,259 INFO L175 Difference]: Start difference. First operand has 89 places, 121 transitions, 1043 flow. Second operand 7 states and 168 transitions. [2024-06-28 02:03:46,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 177 transitions, 1693 flow [2024-06-28 02:03:46,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 177 transitions, 1634 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 02:03:46,282 INFO L231 Difference]: Finished difference. Result has 92 places, 129 transitions, 1159 flow [2024-06-28 02:03:46,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1159, PETRI_PLACES=92, PETRI_TRANSITIONS=129} [2024-06-28 02:03:46,283 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2024-06-28 02:03:46,283 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 129 transitions, 1159 flow [2024-06-28 02:03:46,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:46,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:46,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:46,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:03:46,283 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:46,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash -468196877, now seen corresponding path program 2 times [2024-06-28 02:03:46,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:46,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813480878] [2024-06-28 02:03:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:46,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:46,937 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 02:03:46,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:46,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813480878] [2024-06-28 02:03:46,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813480878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:46,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:46,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:46,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040648336] [2024-06-28 02:03:46,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:46,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:46,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:46,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:46,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:46,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:46,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 129 transitions, 1159 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:46,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:46,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:46,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:47,678 INFO L124 PetriNetUnfolderBase]: 3994/6325 cut-off events. [2024-06-28 02:03:47,678 INFO L125 PetriNetUnfolderBase]: For 32059/32061 co-relation queries the response was YES. [2024-06-28 02:03:47,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25885 conditions, 6325 events. 3994/6325 cut-off events. For 32059/32061 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 37328 event pairs, 1195 based on Foata normal form. 6/6144 useless extension candidates. Maximal degree in co-relation 25845. Up to 5465 conditions per place. [2024-06-28 02:03:47,716 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 132 selfloop transitions, 39 changer transitions 0/178 dead transitions. [2024-06-28 02:03:47,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 178 transitions, 1706 flow [2024-06-28 02:03:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 02:03:47,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-28 02:03:47,718 INFO L175 Difference]: Start difference. First operand has 92 places, 129 transitions, 1159 flow. Second operand 7 states and 162 transitions. [2024-06-28 02:03:47,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 178 transitions, 1706 flow [2024-06-28 02:03:47,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 178 transitions, 1605 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 02:03:47,762 INFO L231 Difference]: Finished difference. Result has 96 places, 136 transitions, 1242 flow [2024-06-28 02:03:47,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1242, PETRI_PLACES=96, PETRI_TRANSITIONS=136} [2024-06-28 02:03:47,762 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 45 predicate places. [2024-06-28 02:03:47,763 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 136 transitions, 1242 flow [2024-06-28 02:03:47,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:47,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:47,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:47,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:03:47,763 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:47,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:47,763 INFO L85 PathProgramCache]: Analyzing trace with hash -464471855, now seen corresponding path program 1 times [2024-06-28 02:03:47,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:47,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631636262] [2024-06-28 02:03:47,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:47,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:48,558 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 02:03:48,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:48,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631636262] [2024-06-28 02:03:48,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631636262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:48,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:48,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:48,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939583025] [2024-06-28 02:03:48,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:48,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:48,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:48,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:48,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:48,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 136 transitions, 1242 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:48,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:48,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:48,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:49,427 INFO L124 PetriNetUnfolderBase]: 4078/6479 cut-off events. [2024-06-28 02:03:49,427 INFO L125 PetriNetUnfolderBase]: For 38015/38017 co-relation queries the response was YES. [2024-06-28 02:03:49,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27495 conditions, 6479 events. 4078/6479 cut-off events. For 38015/38017 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 38592 event pairs, 1180 based on Foata normal form. 10/6292 useless extension candidates. Maximal degree in co-relation 27453. Up to 5559 conditions per place. [2024-06-28 02:03:49,468 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 140 selfloop transitions, 35 changer transitions 0/182 dead transitions. [2024-06-28 02:03:49,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 182 transitions, 1758 flow [2024-06-28 02:03:49,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:49,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 02:03:49,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-28 02:03:49,471 INFO L175 Difference]: Start difference. First operand has 96 places, 136 transitions, 1242 flow. Second operand 7 states and 162 transitions. [2024-06-28 02:03:49,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 182 transitions, 1758 flow [2024-06-28 02:03:49,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 182 transitions, 1659 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:49,516 INFO L231 Difference]: Finished difference. Result has 98 places, 139 transitions, 1262 flow [2024-06-28 02:03:49,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1262, PETRI_PLACES=98, PETRI_TRANSITIONS=139} [2024-06-28 02:03:49,517 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 47 predicate places. [2024-06-28 02:03:49,517 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 139 transitions, 1262 flow [2024-06-28 02:03:49,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:49,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:49,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:49,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:03:49,517 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:49,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:49,517 INFO L85 PathProgramCache]: Analyzing trace with hash 732969674, now seen corresponding path program 1 times [2024-06-28 02:03:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:49,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832495488] [2024-06-28 02:03:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:49,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:50,211 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 02:03:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:50,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832495488] [2024-06-28 02:03:50,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832495488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:50,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:50,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:03:50,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072463912] [2024-06-28 02:03:50,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:50,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:03:50,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:03:50,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:03:50,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:50,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 139 transitions, 1262 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:50,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:50,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:50,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:51,086 INFO L124 PetriNetUnfolderBase]: 4068/6461 cut-off events. [2024-06-28 02:03:51,088 INFO L125 PetriNetUnfolderBase]: For 42009/42018 co-relation queries the response was YES. [2024-06-28 02:03:51,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28194 conditions, 6461 events. 4068/6461 cut-off events. For 42009/42018 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 38446 event pairs, 1188 based on Foata normal form. 8/6270 useless extension candidates. Maximal degree in co-relation 28151. Up to 5491 conditions per place. [2024-06-28 02:03:51,134 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 113 selfloop transitions, 64 changer transitions 0/184 dead transitions. [2024-06-28 02:03:51,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 184 transitions, 1842 flow [2024-06-28 02:03:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:03:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:03:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 02:03:51,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-28 02:03:51,136 INFO L175 Difference]: Start difference. First operand has 98 places, 139 transitions, 1262 flow. Second operand 6 states and 145 transitions. [2024-06-28 02:03:51,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 184 transitions, 1842 flow [2024-06-28 02:03:51,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 184 transitions, 1753 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:51,189 INFO L231 Difference]: Finished difference. Result has 100 places, 147 transitions, 1493 flow [2024-06-28 02:03:51,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1493, PETRI_PLACES=100, PETRI_TRANSITIONS=147} [2024-06-28 02:03:51,189 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 49 predicate places. [2024-06-28 02:03:51,190 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 147 transitions, 1493 flow [2024-06-28 02:03:51,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:51,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:51,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:51,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:03:51,190 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:51,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash 732969891, now seen corresponding path program 2 times [2024-06-28 02:03:51,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:51,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935346758] [2024-06-28 02:03:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:51,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:52,080 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 02:03:52,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:52,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935346758] [2024-06-28 02:03:52,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935346758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:52,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:52,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:52,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156580512] [2024-06-28 02:03:52,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:52,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:52,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:52,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:52,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:52,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:52,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 147 transitions, 1493 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:52,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:52,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:52,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:53,043 INFO L124 PetriNetUnfolderBase]: 4110/6525 cut-off events. [2024-06-28 02:03:53,043 INFO L125 PetriNetUnfolderBase]: For 51882/51882 co-relation queries the response was YES. [2024-06-28 02:03:53,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30066 conditions, 6525 events. 4110/6525 cut-off events. For 51882/51882 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38669 event pairs, 1498 based on Foata normal form. 4/6328 useless extension candidates. Maximal degree in co-relation 30021. Up to 5759 conditions per place. [2024-06-28 02:03:53,093 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 149 selfloop transitions, 34 changer transitions 0/190 dead transitions. [2024-06-28 02:03:53,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 190 transitions, 2039 flow [2024-06-28 02:03:53,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:03:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:03:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-28 02:03:53,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-06-28 02:03:53,097 INFO L175 Difference]: Start difference. First operand has 100 places, 147 transitions, 1493 flow. Second operand 8 states and 167 transitions. [2024-06-28 02:03:53,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 190 transitions, 2039 flow [2024-06-28 02:03:53,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 190 transitions, 1945 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 02:03:53,180 INFO L231 Difference]: Finished difference. Result has 106 places, 151 transitions, 1548 flow [2024-06-28 02:03:53,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1548, PETRI_PLACES=106, PETRI_TRANSITIONS=151} [2024-06-28 02:03:53,181 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 55 predicate places. [2024-06-28 02:03:53,181 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 151 transitions, 1548 flow [2024-06-28 02:03:53,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:53,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:53,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:53,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:03:53,182 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:53,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:53,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1687560707, now seen corresponding path program 3 times [2024-06-28 02:03:53,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:53,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218125409] [2024-06-28 02:03:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:53,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:54,000 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 02:03:54,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:54,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218125409] [2024-06-28 02:03:54,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218125409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:54,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:54,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:54,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695027259] [2024-06-28 02:03:54,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:54,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:54,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:54,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:54,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:54,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:54,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 151 transitions, 1548 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:54,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:54,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:54,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:55,037 INFO L124 PetriNetUnfolderBase]: 4128/6536 cut-off events. [2024-06-28 02:03:55,038 INFO L125 PetriNetUnfolderBase]: For 48852/48852 co-relation queries the response was YES. [2024-06-28 02:03:55,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29687 conditions, 6536 events. 4128/6536 cut-off events. For 48852/48852 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38568 event pairs, 1429 based on Foata normal form. 4/6344 useless extension candidates. Maximal degree in co-relation 29640. Up to 5813 conditions per place. [2024-06-28 02:03:55,086 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 162 selfloop transitions, 25 changer transitions 0/194 dead transitions. [2024-06-28 02:03:55,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 194 transitions, 2090 flow [2024-06-28 02:03:55,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:03:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:03:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 02:03:55,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-06-28 02:03:55,088 INFO L175 Difference]: Start difference. First operand has 106 places, 151 transitions, 1548 flow. Second operand 7 states and 155 transitions. [2024-06-28 02:03:55,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 194 transitions, 2090 flow [2024-06-28 02:03:55,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 194 transitions, 2008 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 02:03:55,136 INFO L231 Difference]: Finished difference. Result has 109 places, 157 transitions, 1605 flow [2024-06-28 02:03:55,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1605, PETRI_PLACES=109, PETRI_TRANSITIONS=157} [2024-06-28 02:03:55,137 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 58 predicate places. [2024-06-28 02:03:55,137 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 157 transitions, 1605 flow [2024-06-28 02:03:55,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:55,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:55,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:55,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:03:55,138 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:55,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:55,138 INFO L85 PathProgramCache]: Analyzing trace with hash -2083952760, now seen corresponding path program 1 times [2024-06-28 02:03:55,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:55,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70801765] [2024-06-28 02:03:55,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:55,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:55,587 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 02:03:55,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:55,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70801765] [2024-06-28 02:03:55,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70801765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:55,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:55,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:03:55,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183386034] [2024-06-28 02:03:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:55,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:03:55,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:03:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:03:55,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:55,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 157 transitions, 1605 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:55,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:55,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:55,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:56,393 INFO L124 PetriNetUnfolderBase]: 4122/6529 cut-off events. [2024-06-28 02:03:56,394 INFO L125 PetriNetUnfolderBase]: For 52945/52945 co-relation queries the response was YES. [2024-06-28 02:03:56,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30366 conditions, 6529 events. 4122/6529 cut-off events. For 52945/52945 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 38460 event pairs, 1493 based on Foata normal form. 2/6335 useless extension candidates. Maximal degree in co-relation 30317. Up to 5900 conditions per place. [2024-06-28 02:03:56,440 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 154 selfloop transitions, 19 changer transitions 0/180 dead transitions. [2024-06-28 02:03:56,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 180 transitions, 2075 flow [2024-06-28 02:03:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:03:56,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:03:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-28 02:03:56,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711111111111111 [2024-06-28 02:03:56,441 INFO L175 Difference]: Start difference. First operand has 109 places, 157 transitions, 1605 flow. Second operand 5 states and 106 transitions. [2024-06-28 02:03:56,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 180 transitions, 2075 flow [2024-06-28 02:03:56,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 180 transitions, 1990 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 02:03:56,507 INFO L231 Difference]: Finished difference. Result has 111 places, 167 transitions, 1686 flow [2024-06-28 02:03:56,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1686, PETRI_PLACES=111, PETRI_TRANSITIONS=167} [2024-06-28 02:03:56,508 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 60 predicate places. [2024-06-28 02:03:56,508 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 167 transitions, 1686 flow [2024-06-28 02:03:56,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:56,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:56,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:56,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:03:56,509 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:56,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:56,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1296760728, now seen corresponding path program 1 times [2024-06-28 02:03:56,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:56,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606558347] [2024-06-28 02:03:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:56,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:57,214 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 02:03:57,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:57,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606558347] [2024-06-28 02:03:57,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606558347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:57,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:57,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:57,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807278143] [2024-06-28 02:03:57,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:57,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:57,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:57,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:57,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:57,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:57,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 167 transitions, 1686 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:57,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:57,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:57,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:03:58,169 INFO L124 PetriNetUnfolderBase]: 4348/6894 cut-off events. [2024-06-28 02:03:58,169 INFO L125 PetriNetUnfolderBase]: For 64241/64251 co-relation queries the response was YES. [2024-06-28 02:03:58,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33145 conditions, 6894 events. 4348/6894 cut-off events. For 64241/64251 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 41353 event pairs, 747 based on Foata normal form. 24/6718 useless extension candidates. Maximal degree in co-relation 33094. Up to 5218 conditions per place. [2024-06-28 02:03:58,222 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 167 selfloop transitions, 56 changer transitions 0/230 dead transitions. [2024-06-28 02:03:58,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 230 transitions, 2496 flow [2024-06-28 02:03:58,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:03:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:03:58,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-28 02:03:58,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 02:03:58,224 INFO L175 Difference]: Start difference. First operand has 111 places, 167 transitions, 1686 flow. Second operand 8 states and 192 transitions. [2024-06-28 02:03:58,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 230 transitions, 2496 flow [2024-06-28 02:03:58,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 230 transitions, 2464 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-28 02:03:58,288 INFO L231 Difference]: Finished difference. Result has 118 places, 171 transitions, 1849 flow [2024-06-28 02:03:58,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1654, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1849, PETRI_PLACES=118, PETRI_TRANSITIONS=171} [2024-06-28 02:03:58,289 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 67 predicate places. [2024-06-28 02:03:58,289 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 171 transitions, 1849 flow [2024-06-28 02:03:58,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:58,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:03:58,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:03:58,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:03:58,290 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:03:58,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:03:58,290 INFO L85 PathProgramCache]: Analyzing trace with hash 976419414, now seen corresponding path program 2 times [2024-06-28 02:03:58,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:03:58,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596436385] [2024-06-28 02:03:58,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:03:58,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:03:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:03:59,087 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 02:03:59,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:03:59,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596436385] [2024-06-28 02:03:59,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596436385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:03:59,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:03:59,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:03:59,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038893395] [2024-06-28 02:03:59,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:03:59,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:03:59,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:03:59,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:03:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:03:59,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:03:59,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 171 transitions, 1849 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:03:59,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:03:59,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:03:59,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:00,232 INFO L124 PetriNetUnfolderBase]: 4531/7160 cut-off events. [2024-06-28 02:04:00,232 INFO L125 PetriNetUnfolderBase]: For 74300/74302 co-relation queries the response was YES. [2024-06-28 02:04:00,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35516 conditions, 7160 events. 4531/7160 cut-off events. For 74300/74302 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 42992 event pairs, 1175 based on Foata normal form. 34/6995 useless extension candidates. Maximal degree in co-relation 35462. Up to 5698 conditions per place. [2024-06-28 02:04:00,289 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 191 selfloop transitions, 62 changer transitions 0/260 dead transitions. [2024-06-28 02:04:00,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 260 transitions, 2877 flow [2024-06-28 02:04:00,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:04:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:04:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-28 02:04:00,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 02:04:00,292 INFO L175 Difference]: Start difference. First operand has 118 places, 171 transitions, 1849 flow. Second operand 9 states and 216 transitions. [2024-06-28 02:04:00,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 260 transitions, 2877 flow [2024-06-28 02:04:00,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 260 transitions, 2773 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:00,407 INFO L231 Difference]: Finished difference. Result has 125 places, 193 transitions, 2245 flow [2024-06-28 02:04:00,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2245, PETRI_PLACES=125, PETRI_TRANSITIONS=193} [2024-06-28 02:04:00,407 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 74 predicate places. [2024-06-28 02:04:00,407 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 193 transitions, 2245 flow [2024-06-28 02:04:00,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:00,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:00,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:00,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:04:00,408 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:00,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:00,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1178434658, now seen corresponding path program 1 times [2024-06-28 02:04:00,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:00,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989923516] [2024-06-28 02:04:00,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:00,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:01,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:01,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:01,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989923516] [2024-06-28 02:04:01,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989923516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:01,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:01,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:01,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761339055] [2024-06-28 02:04:01,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:01,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:01,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:01,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:01,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:01,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:01,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 193 transitions, 2245 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:01,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:01,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:01,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:02,235 INFO L124 PetriNetUnfolderBase]: 4573/7279 cut-off events. [2024-06-28 02:04:02,235 INFO L125 PetriNetUnfolderBase]: For 82653/82655 co-relation queries the response was YES. [2024-06-28 02:04:02,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38214 conditions, 7279 events. 4573/7279 cut-off events. For 82653/82655 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 44350 event pairs, 1272 based on Foata normal form. 6/7067 useless extension candidates. Maximal degree in co-relation 38156. Up to 6334 conditions per place. [2024-06-28 02:04:02,290 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 194 selfloop transitions, 38 changer transitions 0/239 dead transitions. [2024-06-28 02:04:02,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 239 transitions, 2899 flow [2024-06-28 02:04:02,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:02,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 02:04:02,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206349206349207 [2024-06-28 02:04:02,292 INFO L175 Difference]: Start difference. First operand has 125 places, 193 transitions, 2245 flow. Second operand 7 states and 164 transitions. [2024-06-28 02:04:02,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 239 transitions, 2899 flow [2024-06-28 02:04:02,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 239 transitions, 2769 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:02,472 INFO L231 Difference]: Finished difference. Result has 128 places, 195 transitions, 2241 flow [2024-06-28 02:04:02,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2115, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2241, PETRI_PLACES=128, PETRI_TRANSITIONS=195} [2024-06-28 02:04:02,473 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 77 predicate places. [2024-06-28 02:04:02,473 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 195 transitions, 2241 flow [2024-06-28 02:04:02,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:02,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:02,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:02,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:04:02,474 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:02,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1178428148, now seen corresponding path program 2 times [2024-06-28 02:04:02,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:02,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86316482] [2024-06-28 02:04:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:03,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:03,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86316482] [2024-06-28 02:04:03,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86316482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:03,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:03,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:03,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985936604] [2024-06-28 02:04:03,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:03,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:03,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:03,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:03,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 195 transitions, 2241 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:03,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:03,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:03,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:04,271 INFO L124 PetriNetUnfolderBase]: 4657/7403 cut-off events. [2024-06-28 02:04:04,271 INFO L125 PetriNetUnfolderBase]: For 86447/86449 co-relation queries the response was YES. [2024-06-28 02:04:04,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39191 conditions, 7403 events. 4657/7403 cut-off events. For 86447/86449 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 45116 event pairs, 1258 based on Foata normal form. 6/7191 useless extension candidates. Maximal degree in co-relation 39131. Up to 6264 conditions per place. [2024-06-28 02:04:04,321 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 196 selfloop transitions, 39 changer transitions 0/242 dead transitions. [2024-06-28 02:04:04,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 242 transitions, 2936 flow [2024-06-28 02:04:04,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 02:04:04,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-28 02:04:04,323 INFO L175 Difference]: Start difference. First operand has 128 places, 195 transitions, 2241 flow. Second operand 7 states and 160 transitions. [2024-06-28 02:04:04,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 242 transitions, 2936 flow [2024-06-28 02:04:04,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 242 transitions, 2838 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:04:04,432 INFO L231 Difference]: Finished difference. Result has 131 places, 199 transitions, 2309 flow [2024-06-28 02:04:04,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2309, PETRI_PLACES=131, PETRI_TRANSITIONS=199} [2024-06-28 02:04:04,432 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 80 predicate places. [2024-06-28 02:04:04,432 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 199 transitions, 2309 flow [2024-06-28 02:04:04,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:04,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:04,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:04,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:04:04,433 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:04,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:04,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1247224632, now seen corresponding path program 3 times [2024-06-28 02:04:04,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:04,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188129542] [2024-06-28 02:04:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:05,236 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 02:04:05,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:05,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188129542] [2024-06-28 02:04:05,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188129542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:05,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:05,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029040992] [2024-06-28 02:04:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:05,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:05,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:05,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:05,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:05,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:05,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 199 transitions, 2309 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:05,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:05,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:05,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:06,295 INFO L124 PetriNetUnfolderBase]: 4699/7449 cut-off events. [2024-06-28 02:04:06,295 INFO L125 PetriNetUnfolderBase]: For 93001/93011 co-relation queries the response was YES. [2024-06-28 02:04:06,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40254 conditions, 7449 events. 4699/7449 cut-off events. For 93001/93011 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 45216 event pairs, 1256 based on Foata normal form. 12/7249 useless extension candidates. Maximal degree in co-relation 40192. Up to 6364 conditions per place. [2024-06-28 02:04:06,358 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 171 selfloop transitions, 69 changer transitions 0/247 dead transitions. [2024-06-28 02:04:06,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 247 transitions, 3003 flow [2024-06-28 02:04:06,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 02:04:06,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301587301587302 [2024-06-28 02:04:06,359 INFO L175 Difference]: Start difference. First operand has 131 places, 199 transitions, 2309 flow. Second operand 7 states and 167 transitions. [2024-06-28 02:04:06,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 247 transitions, 3003 flow [2024-06-28 02:04:06,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 247 transitions, 2917 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:06,538 INFO L231 Difference]: Finished difference. Result has 134 places, 201 transitions, 2423 flow [2024-06-28 02:04:06,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2223, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2423, PETRI_PLACES=134, PETRI_TRANSITIONS=201} [2024-06-28 02:04:06,539 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 83 predicate places. [2024-06-28 02:04:06,539 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 201 transitions, 2423 flow [2024-06-28 02:04:06,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:06,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:06,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:06,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:04:06,540 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:06,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:06,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1247231142, now seen corresponding path program 4 times [2024-06-28 02:04:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:06,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599724625] [2024-06-28 02:04:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:06,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:07,345 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 02:04:07,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599724625] [2024-06-28 02:04:07,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599724625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:07,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:07,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:07,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869213080] [2024-06-28 02:04:07,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:07,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:07,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:07,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:07,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:07,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:07,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 201 transitions, 2423 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:07,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:07,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:07,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:08,433 INFO L124 PetriNetUnfolderBase]: 4767/7540 cut-off events. [2024-06-28 02:04:08,433 INFO L125 PetriNetUnfolderBase]: For 102825/102835 co-relation queries the response was YES. [2024-06-28 02:04:08,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41630 conditions, 7540 events. 4767/7540 cut-off events. For 102825/102835 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 45725 event pairs, 1239 based on Foata normal form. 12/7343 useless extension candidates. Maximal degree in co-relation 41567. Up to 6158 conditions per place. [2024-06-28 02:04:08,496 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 173 selfloop transitions, 71 changer transitions 0/251 dead transitions. [2024-06-28 02:04:08,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 251 transitions, 3212 flow [2024-06-28 02:04:08,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:08,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:08,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 02:04:08,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174603174603175 [2024-06-28 02:04:08,498 INFO L175 Difference]: Start difference. First operand has 134 places, 201 transitions, 2423 flow. Second operand 7 states and 163 transitions. [2024-06-28 02:04:08,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 251 transitions, 3212 flow [2024-06-28 02:04:08,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 251 transitions, 3038 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 02:04:08,696 INFO L231 Difference]: Finished difference. Result has 137 places, 206 transitions, 2554 flow [2024-06-28 02:04:08,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2554, PETRI_PLACES=137, PETRI_TRANSITIONS=206} [2024-06-28 02:04:08,697 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 86 predicate places. [2024-06-28 02:04:08,697 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 206 transitions, 2554 flow [2024-06-28 02:04:08,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:08,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:08,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:08,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:04:08,705 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:08,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:08,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1079227606, now seen corresponding path program 5 times [2024-06-28 02:04:08,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:08,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504939802] [2024-06-28 02:04:08,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:08,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:09,373 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 02:04:09,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:09,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504939802] [2024-06-28 02:04:09,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504939802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:09,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:09,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:09,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655151773] [2024-06-28 02:04:09,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:09,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:09,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:09,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:09,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:09,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 206 transitions, 2554 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:09,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:09,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:09,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:10,437 INFO L124 PetriNetUnfolderBase]: 4785/7560 cut-off events. [2024-06-28 02:04:10,438 INFO L125 PetriNetUnfolderBase]: For 103733/103743 co-relation queries the response was YES. [2024-06-28 02:04:10,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42149 conditions, 7560 events. 4785/7560 cut-off events. For 103733/103743 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 45421 event pairs, 1582 based on Foata normal form. 12/7365 useless extension candidates. Maximal degree in co-relation 42084. Up to 6781 conditions per place. [2024-06-28 02:04:10,503 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 224 selfloop transitions, 20 changer transitions 0/251 dead transitions. [2024-06-28 02:04:10,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 251 transitions, 3296 flow [2024-06-28 02:04:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:10,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:10,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 02:04:10,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2024-06-28 02:04:10,504 INFO L175 Difference]: Start difference. First operand has 137 places, 206 transitions, 2554 flow. Second operand 7 states and 152 transitions. [2024-06-28 02:04:10,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 251 transitions, 3296 flow [2024-06-28 02:04:10,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 251 transitions, 3175 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 02:04:10,741 INFO L231 Difference]: Finished difference. Result has 144 places, 216 transitions, 2653 flow [2024-06-28 02:04:10,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2437, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2653, PETRI_PLACES=144, PETRI_TRANSITIONS=216} [2024-06-28 02:04:10,742 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 93 predicate places. [2024-06-28 02:04:10,742 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 216 transitions, 2653 flow [2024-06-28 02:04:10,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:10,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:10,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:10,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:04:10,743 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:10,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:10,743 INFO L85 PathProgramCache]: Analyzing trace with hash 492045937, now seen corresponding path program 1 times [2024-06-28 02:04:10,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:10,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538415013] [2024-06-28 02:04:10,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:10,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:11,152 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 02:04:11,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:11,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538415013] [2024-06-28 02:04:11,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538415013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:11,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:11,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:04:11,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988886386] [2024-06-28 02:04:11,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:11,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:04:11,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:11,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:04:11,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:04:11,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:11,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 216 transitions, 2653 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:11,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:11,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:11,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:12,307 INFO L124 PetriNetUnfolderBase]: 4825/7632 cut-off events. [2024-06-28 02:04:12,308 INFO L125 PetriNetUnfolderBase]: For 106883/106883 co-relation queries the response was YES. [2024-06-28 02:04:12,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43077 conditions, 7632 events. 4825/7632 cut-off events. For 106883/106883 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 46071 event pairs, 1644 based on Foata normal form. 2/7420 useless extension candidates. Maximal degree in co-relation 43007. Up to 6861 conditions per place. [2024-06-28 02:04:12,376 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 207 selfloop transitions, 35 changer transitions 0/249 dead transitions. [2024-06-28 02:04:12,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 249 transitions, 3369 flow [2024-06-28 02:04:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:04:12,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:04:12,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 02:04:12,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925925925925926 [2024-06-28 02:04:12,377 INFO L175 Difference]: Start difference. First operand has 144 places, 216 transitions, 2653 flow. Second operand 6 states and 133 transitions. [2024-06-28 02:04:12,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 249 transitions, 3369 flow [2024-06-28 02:04:12,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 249 transitions, 3313 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 02:04:12,592 INFO L231 Difference]: Finished difference. Result has 148 places, 222 transitions, 2762 flow [2024-06-28 02:04:12,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2762, PETRI_PLACES=148, PETRI_TRANSITIONS=222} [2024-06-28 02:04:12,593 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 97 predicate places. [2024-06-28 02:04:12,593 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 222 transitions, 2762 flow [2024-06-28 02:04:12,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:12,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:12,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:12,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:04:12,593 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:12,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:12,594 INFO L85 PathProgramCache]: Analyzing trace with hash -135132591, now seen corresponding path program 2 times [2024-06-28 02:04:12,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:12,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804539447] [2024-06-28 02:04:12,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:12,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:13,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:13,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804539447] [2024-06-28 02:04:13,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804539447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:13,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:13,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:04:13,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917951327] [2024-06-28 02:04:13,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:13,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:04:13,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:13,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:04:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:04:13,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:13,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 222 transitions, 2762 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:13,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:13,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:13,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:14,257 INFO L124 PetriNetUnfolderBase]: 4819/7609 cut-off events. [2024-06-28 02:04:14,258 INFO L125 PetriNetUnfolderBase]: For 112171/112171 co-relation queries the response was YES. [2024-06-28 02:04:14,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43602 conditions, 7609 events. 4819/7609 cut-off events. For 112171/112171 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 45743 event pairs, 1638 based on Foata normal form. 2/7402 useless extension candidates. Maximal degree in co-relation 43530. Up to 6889 conditions per place. [2024-06-28 02:04:14,316 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 202 selfloop transitions, 32 changer transitions 0/241 dead transitions. [2024-06-28 02:04:14,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 241 transitions, 3298 flow [2024-06-28 02:04:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:04:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:04:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-28 02:04:14,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2024-06-28 02:04:14,318 INFO L175 Difference]: Start difference. First operand has 148 places, 222 transitions, 2762 flow. Second operand 5 states and 112 transitions. [2024-06-28 02:04:14,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 241 transitions, 3298 flow [2024-06-28 02:04:14,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 241 transitions, 3231 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 02:04:14,543 INFO L231 Difference]: Finished difference. Result has 151 places, 222 transitions, 2781 flow [2024-06-28 02:04:14,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2781, PETRI_PLACES=151, PETRI_TRANSITIONS=222} [2024-06-28 02:04:14,543 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 100 predicate places. [2024-06-28 02:04:14,544 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 222 transitions, 2781 flow [2024-06-28 02:04:14,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:14,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:14,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:14,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:04:14,544 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:14,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:14,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1004734293, now seen corresponding path program 1 times [2024-06-28 02:04:14,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:14,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85152421] [2024-06-28 02:04:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:14,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:15,077 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 02:04:15,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:15,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85152421] [2024-06-28 02:04:15,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85152421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:15,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:15,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:15,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082907177] [2024-06-28 02:04:15,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:15,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:15,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:15,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:15,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:15,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:15,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 222 transitions, 2781 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:15,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:15,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:15,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:16,135 INFO L124 PetriNetUnfolderBase]: 4995/7928 cut-off events. [2024-06-28 02:04:16,136 INFO L125 PetriNetUnfolderBase]: For 118461/118463 co-relation queries the response was YES. [2024-06-28 02:04:16,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45381 conditions, 7928 events. 4995/7928 cut-off events. For 118461/118463 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 48960 event pairs, 1329 based on Foata normal form. 5/7698 useless extension candidates. Maximal degree in co-relation 45307. Up to 6716 conditions per place. [2024-06-28 02:04:16,206 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 227 selfloop transitions, 51 changer transitions 0/285 dead transitions. [2024-06-28 02:04:16,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 285 transitions, 3861 flow [2024-06-28 02:04:16,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:16,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:16,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 02:04:16,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301587301587302 [2024-06-28 02:04:16,208 INFO L175 Difference]: Start difference. First operand has 151 places, 222 transitions, 2781 flow. Second operand 7 states and 167 transitions. [2024-06-28 02:04:16,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 285 transitions, 3861 flow [2024-06-28 02:04:16,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 285 transitions, 3793 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:16,557 INFO L231 Difference]: Finished difference. Result has 156 places, 240 transitions, 3129 flow [2024-06-28 02:04:16,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3129, PETRI_PLACES=156, PETRI_TRANSITIONS=240} [2024-06-28 02:04:16,561 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 105 predicate places. [2024-06-28 02:04:16,562 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 240 transitions, 3129 flow [2024-06-28 02:04:16,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:16,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:16,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:16,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:04:16,562 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:16,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash 318976382, now seen corresponding path program 1 times [2024-06-28 02:04:16,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:16,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103835028] [2024-06-28 02:04:16,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:16,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:17,425 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 02:04:17,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103835028] [2024-06-28 02:04:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103835028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:17,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:17,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:04:17,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700800431] [2024-06-28 02:04:17,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:17,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:04:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:17,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:04:17,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:04:17,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:17,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 240 transitions, 3129 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:17,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:17,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:17,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:18,953 INFO L124 PetriNetUnfolderBase]: 5081/8017 cut-off events. [2024-06-28 02:04:18,953 INFO L125 PetriNetUnfolderBase]: For 138786/138801 co-relation queries the response was YES. [2024-06-28 02:04:18,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48862 conditions, 8017 events. 5081/8017 cut-off events. For 138786/138801 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 49033 event pairs, 1325 based on Foata normal form. 24/7821 useless extension candidates. Maximal degree in co-relation 48785. Up to 6894 conditions per place. [2024-06-28 02:04:19,032 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 241 selfloop transitions, 50 changer transitions 0/298 dead transitions. [2024-06-28 02:04:19,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 298 transitions, 4045 flow [2024-06-28 02:04:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 02:04:19,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 02:04:19,034 INFO L175 Difference]: Start difference. First operand has 156 places, 240 transitions, 3129 flow. Second operand 8 states and 185 transitions. [2024-06-28 02:04:19,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 298 transitions, 4045 flow [2024-06-28 02:04:19,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 298 transitions, 3973 flow, removed 35 selfloop flow, removed 1 redundant places. [2024-06-28 02:04:19,289 INFO L231 Difference]: Finished difference. Result has 164 places, 247 transitions, 3312 flow [2024-06-28 02:04:19,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3312, PETRI_PLACES=164, PETRI_TRANSITIONS=247} [2024-06-28 02:04:19,291 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 113 predicate places. [2024-06-28 02:04:19,292 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 247 transitions, 3312 flow [2024-06-28 02:04:19,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:19,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:19,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:19,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:04:19,292 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:19,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash 319178192, now seen corresponding path program 2 times [2024-06-28 02:04:19,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:19,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168805294] [2024-06-28 02:04:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:19,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:20,194 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 02:04:20,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:20,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168805294] [2024-06-28 02:04:20,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168805294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:20,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:20,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:04:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525987693] [2024-06-28 02:04:20,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:20,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:04:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:04:20,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:04:20,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:20,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 247 transitions, 3312 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:20,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:20,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:20,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:21,579 INFO L124 PetriNetUnfolderBase]: 5167/8151 cut-off events. [2024-06-28 02:04:21,580 INFO L125 PetriNetUnfolderBase]: For 152902/152917 co-relation queries the response was YES. [2024-06-28 02:04:21,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50320 conditions, 8151 events. 5167/8151 cut-off events. For 152902/152917 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 49993 event pairs, 1313 based on Foata normal form. 24/7955 useless extension candidates. Maximal degree in co-relation 50239. Up to 6810 conditions per place. [2024-06-28 02:04:21,666 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 247 selfloop transitions, 60 changer transitions 0/314 dead transitions. [2024-06-28 02:04:21,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 314 transitions, 4407 flow [2024-06-28 02:04:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:21,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 02:04:21,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027777777777778 [2024-06-28 02:04:21,668 INFO L175 Difference]: Start difference. First operand has 164 places, 247 transitions, 3312 flow. Second operand 8 states and 181 transitions. [2024-06-28 02:04:21,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 314 transitions, 4407 flow [2024-06-28 02:04:21,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 314 transitions, 4278 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:21,932 INFO L231 Difference]: Finished difference. Result has 170 places, 266 transitions, 3666 flow [2024-06-28 02:04:21,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3183, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3666, PETRI_PLACES=170, PETRI_TRANSITIONS=266} [2024-06-28 02:04:21,933 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 119 predicate places. [2024-06-28 02:04:21,933 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 266 transitions, 3666 flow [2024-06-28 02:04:21,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:21,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:21,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:21,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:04:21,934 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:21,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:21,934 INFO L85 PathProgramCache]: Analyzing trace with hash 645370459, now seen corresponding path program 2 times [2024-06-28 02:04:21,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:21,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494164942] [2024-06-28 02:04:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:21,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:22,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:04:22,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:22,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494164942] [2024-06-28 02:04:22,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494164942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:22,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:22,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:22,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441189921] [2024-06-28 02:04:22,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:22,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:22,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 266 transitions, 3666 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:22,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:22,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:22,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:23,800 INFO L124 PetriNetUnfolderBase]: 5343/8398 cut-off events. [2024-06-28 02:04:23,800 INFO L125 PetriNetUnfolderBase]: For 157569/157569 co-relation queries the response was YES. [2024-06-28 02:04:23,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52678 conditions, 8398 events. 5343/8398 cut-off events. For 157569/157569 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 51492 event pairs, 1525 based on Foata normal form. 3/8177 useless extension candidates. Maximal degree in co-relation 52593. Up to 7554 conditions per place. [2024-06-28 02:04:23,886 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 283 selfloop transitions, 29 changer transitions 0/319 dead transitions. [2024-06-28 02:04:23,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 319 transitions, 4719 flow [2024-06-28 02:04:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-28 02:04:23,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-28 02:04:23,887 INFO L175 Difference]: Start difference. First operand has 170 places, 266 transitions, 3666 flow. Second operand 8 states and 174 transitions. [2024-06-28 02:04:23,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 319 transitions, 4719 flow [2024-06-28 02:04:24,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 319 transitions, 4533 flow, removed 71 selfloop flow, removed 3 redundant places. [2024-06-28 02:04:24,299 INFO L231 Difference]: Finished difference. Result has 176 places, 277 transitions, 3722 flow [2024-06-28 02:04:24,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3481, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3722, PETRI_PLACES=176, PETRI_TRANSITIONS=277} [2024-06-28 02:04:24,299 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 125 predicate places. [2024-06-28 02:04:24,299 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 277 transitions, 3722 flow [2024-06-28 02:04:24,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:24,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:24,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:24,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:04:24,300 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:24,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:24,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1005003404, now seen corresponding path program 1 times [2024-06-28 02:04:24,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:24,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919541883] [2024-06-28 02:04:24,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:24,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:24,756 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 02:04:24,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:24,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919541883] [2024-06-28 02:04:24,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919541883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:24,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:24,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:24,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81231767] [2024-06-28 02:04:24,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:24,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:24,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:24,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:24,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:24,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:24,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 277 transitions, 3722 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:24,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:24,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:24,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:26,047 INFO L124 PetriNetUnfolderBase]: 5376/8466 cut-off events. [2024-06-28 02:04:26,048 INFO L125 PetriNetUnfolderBase]: For 157654/157654 co-relation queries the response was YES. [2024-06-28 02:04:26,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52804 conditions, 8466 events. 5376/8466 cut-off events. For 157654/157654 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 52011 event pairs, 1541 based on Foata normal form. 2/8235 useless extension candidates. Maximal degree in co-relation 52716. Up to 7638 conditions per place. [2024-06-28 02:04:26,134 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 284 selfloop transitions, 40 changer transitions 0/331 dead transitions. [2024-06-28 02:04:26,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 331 transitions, 4850 flow [2024-06-28 02:04:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:26,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 02:04:26,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 02:04:26,138 INFO L175 Difference]: Start difference. First operand has 176 places, 277 transitions, 3722 flow. Second operand 7 states and 154 transitions. [2024-06-28 02:04:26,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 331 transitions, 4850 flow [2024-06-28 02:04:26,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 331 transitions, 4680 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:26,474 INFO L231 Difference]: Finished difference. Result has 181 places, 298 transitions, 3990 flow [2024-06-28 02:04:26,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3568, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3990, PETRI_PLACES=181, PETRI_TRANSITIONS=298} [2024-06-28 02:04:26,475 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 130 predicate places. [2024-06-28 02:04:26,475 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 298 transitions, 3990 flow [2024-06-28 02:04:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:26,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:26,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:26,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:04:26,476 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:26,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:26,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1751830524, now seen corresponding path program 3 times [2024-06-28 02:04:26,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:26,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011592640] [2024-06-28 02:04:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:26,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:27,203 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 02:04:27,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:27,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011592640] [2024-06-28 02:04:27,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011592640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:27,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:27,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:27,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202901468] [2024-06-28 02:04:27,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:27,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:27,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:27,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:27,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:27,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:27,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 298 transitions, 3990 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:04:27,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:27,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:27,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:28,651 INFO L124 PetriNetUnfolderBase]: 5369/8450 cut-off events. [2024-06-28 02:04:28,651 INFO L125 PetriNetUnfolderBase]: For 166575/166590 co-relation queries the response was YES. [2024-06-28 02:04:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53244 conditions, 8450 events. 5369/8450 cut-off events. For 166575/166590 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 51635 event pairs, 1635 based on Foata normal form. 24/8244 useless extension candidates. Maximal degree in co-relation 53153. Up to 7481 conditions per place. [2024-06-28 02:04:28,733 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 312 selfloop transitions, 39 changer transitions 0/358 dead transitions. [2024-06-28 02:04:28,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 358 transitions, 5124 flow [2024-06-28 02:04:28,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:28,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:28,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-28 02:04:28,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 02:04:28,735 INFO L175 Difference]: Start difference. First operand has 181 places, 298 transitions, 3990 flow. Second operand 8 states and 173 transitions. [2024-06-28 02:04:28,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 358 transitions, 5124 flow [2024-06-28 02:04:29,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 358 transitions, 4967 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:29,069 INFO L231 Difference]: Finished difference. Result has 187 places, 316 transitions, 4265 flow [2024-06-28 02:04:29,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3793, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4265, PETRI_PLACES=187, PETRI_TRANSITIONS=316} [2024-06-28 02:04:29,070 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 136 predicate places. [2024-06-28 02:04:29,070 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 316 transitions, 4265 flow [2024-06-28 02:04:29,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:04:29,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:29,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:29,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:04:29,071 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:29,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:29,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1224226507, now seen corresponding path program 3 times [2024-06-28 02:04:29,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:29,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941921282] [2024-06-28 02:04:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:29,607 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 02:04:29,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:29,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941921282] [2024-06-28 02:04:29,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941921282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:29,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:29,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:29,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259284224] [2024-06-28 02:04:29,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:29,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:29,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:29,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:29,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:29,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 316 transitions, 4265 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:04:29,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:29,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:29,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:31,132 INFO L124 PetriNetUnfolderBase]: 5502/8663 cut-off events. [2024-06-28 02:04:31,132 INFO L125 PetriNetUnfolderBase]: For 169827/169827 co-relation queries the response was YES. [2024-06-28 02:04:31,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55222 conditions, 8663 events. 5502/8663 cut-off events. For 169827/169827 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 53494 event pairs, 1386 based on Foata normal form. 3/8424 useless extension candidates. Maximal degree in co-relation 55128. Up to 7550 conditions per place. [2024-06-28 02:04:31,209 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 308 selfloop transitions, 55 changer transitions 0/370 dead transitions. [2024-06-28 02:04:31,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 370 transitions, 5416 flow [2024-06-28 02:04:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:31,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 02:04:31,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206349206349207 [2024-06-28 02:04:31,211 INFO L175 Difference]: Start difference. First operand has 187 places, 316 transitions, 4265 flow. Second operand 7 states and 164 transitions. [2024-06-28 02:04:31,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 370 transitions, 5416 flow [2024-06-28 02:04:31,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 370 transitions, 5166 flow, removed 116 selfloop flow, removed 2 redundant places. [2024-06-28 02:04:31,697 INFO L231 Difference]: Finished difference. Result has 194 places, 325 transitions, 4355 flow [2024-06-28 02:04:31,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4015, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4355, PETRI_PLACES=194, PETRI_TRANSITIONS=325} [2024-06-28 02:04:31,698 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 143 predicate places. [2024-06-28 02:04:31,698 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 325 transitions, 4355 flow [2024-06-28 02:04:31,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:04:31,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:31,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:31,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:04:31,699 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:31,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:31,700 INFO L85 PathProgramCache]: Analyzing trace with hash 106058854, now seen corresponding path program 2 times [2024-06-28 02:04:31,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:31,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19119840] [2024-06-28 02:04:31,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:31,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:32,141 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 02:04:32,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:32,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19119840] [2024-06-28 02:04:32,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19119840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:32,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:32,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:32,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078021587] [2024-06-28 02:04:32,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:32,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:32,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:32,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:32,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:32,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:32,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 325 transitions, 4355 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:04:32,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:32,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:32,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:33,519 INFO L124 PetriNetUnfolderBase]: 5535/8689 cut-off events. [2024-06-28 02:04:33,520 INFO L125 PetriNetUnfolderBase]: For 173438/173438 co-relation queries the response was YES. [2024-06-28 02:04:33,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55818 conditions, 8689 events. 5535/8689 cut-off events. For 173438/173438 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 53197 event pairs, 1755 based on Foata normal form. 2/8455 useless extension candidates. Maximal degree in co-relation 55720. Up to 7921 conditions per place. [2024-06-28 02:04:33,620 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 317 selfloop transitions, 28 changer transitions 0/352 dead transitions. [2024-06-28 02:04:33,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 352 transitions, 5207 flow [2024-06-28 02:04:33,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:04:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:04:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-28 02:04:33,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 02:04:33,622 INFO L175 Difference]: Start difference. First operand has 194 places, 325 transitions, 4355 flow. Second operand 6 states and 125 transitions. [2024-06-28 02:04:33,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 352 transitions, 5207 flow [2024-06-28 02:04:34,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 352 transitions, 5091 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-28 02:04:34,175 INFO L231 Difference]: Finished difference. Result has 198 places, 334 transitions, 4423 flow [2024-06-28 02:04:34,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4239, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4423, PETRI_PLACES=198, PETRI_TRANSITIONS=334} [2024-06-28 02:04:34,175 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 147 predicate places. [2024-06-28 02:04:34,175 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 334 transitions, 4423 flow [2024-06-28 02:04:34,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:04:34,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:34,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:34,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:04:34,176 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:34,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:34,176 INFO L85 PathProgramCache]: Analyzing trace with hash 105644074, now seen corresponding path program 3 times [2024-06-28 02:04:34,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:34,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635945573] [2024-06-28 02:04:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:34,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:34,682 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 02:04:34,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:34,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635945573] [2024-06-28 02:04:34,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635945573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:34,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:34,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:34,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320480628] [2024-06-28 02:04:34,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:34,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:34,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:34,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:34,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:34,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:34,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 334 transitions, 4423 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:34,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:34,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:34,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:36,018 INFO L124 PetriNetUnfolderBase]: 5550/8700 cut-off events. [2024-06-28 02:04:36,018 INFO L125 PetriNetUnfolderBase]: For 176916/176916 co-relation queries the response was YES. [2024-06-28 02:04:36,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56121 conditions, 8700 events. 5550/8700 cut-off events. For 176916/176916 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 53254 event pairs, 1542 based on Foata normal form. 2/8468 useless extension candidates. Maximal degree in co-relation 56021. Up to 7851 conditions per place. [2024-06-28 02:04:36,128 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 309 selfloop transitions, 51 changer transitions 0/367 dead transitions. [2024-06-28 02:04:36,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 367 transitions, 5408 flow [2024-06-28 02:04:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:04:36,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:04:36,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 02:04:36,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:04:36,130 INFO L175 Difference]: Start difference. First operand has 198 places, 334 transitions, 4423 flow. Second operand 6 states and 135 transitions. [2024-06-28 02:04:36,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 367 transitions, 5408 flow [2024-06-28 02:04:36,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 367 transitions, 5324 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-28 02:04:36,665 INFO L231 Difference]: Finished difference. Result has 203 places, 340 transitions, 4586 flow [2024-06-28 02:04:36,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4339, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4586, PETRI_PLACES=203, PETRI_TRANSITIONS=340} [2024-06-28 02:04:36,666 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 152 predicate places. [2024-06-28 02:04:36,666 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 340 transitions, 4586 flow [2024-06-28 02:04:36,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:36,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:36,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:36,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:04:36,667 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:36,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:36,667 INFO L85 PathProgramCache]: Analyzing trace with hash 16991031, now seen corresponding path program 1 times [2024-06-28 02:04:36,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:36,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290208921] [2024-06-28 02:04:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:36,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:37,123 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 02:04:37,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:37,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290208921] [2024-06-28 02:04:37,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290208921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:37,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:37,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:37,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347997605] [2024-06-28 02:04:37,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:37,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:37,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:37,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:37,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:37,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:37,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 340 transitions, 4586 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:37,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:37,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:37,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:38,703 INFO L124 PetriNetUnfolderBase]: 5610/8777 cut-off events. [2024-06-28 02:04:38,704 INFO L125 PetriNetUnfolderBase]: For 186410/186410 co-relation queries the response was YES. [2024-06-28 02:04:38,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57106 conditions, 8777 events. 5610/8777 cut-off events. For 186410/186410 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 53569 event pairs, 1750 based on Foata normal form. 4/8548 useless extension candidates. Maximal degree in co-relation 57003. Up to 7857 conditions per place. [2024-06-28 02:04:38,809 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 333 selfloop transitions, 46 changer transitions 0/386 dead transitions. [2024-06-28 02:04:38,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 386 transitions, 5756 flow [2024-06-28 02:04:38,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:04:38,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:04:38,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 02:04:38,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 02:04:38,811 INFO L175 Difference]: Start difference. First operand has 203 places, 340 transitions, 4586 flow. Second operand 7 states and 153 transitions. [2024-06-28 02:04:38,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 386 transitions, 5756 flow [2024-06-28 02:04:39,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 386 transitions, 5630 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:39,381 INFO L231 Difference]: Finished difference. Result has 208 places, 354 transitions, 4818 flow [2024-06-28 02:04:39,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4462, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4818, PETRI_PLACES=208, PETRI_TRANSITIONS=354} [2024-06-28 02:04:39,381 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 157 predicate places. [2024-06-28 02:04:39,381 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 354 transitions, 4818 flow [2024-06-28 02:04:39,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:39,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:39,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:39,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:04:39,382 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:39,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:39,382 INFO L85 PathProgramCache]: Analyzing trace with hash 106065767, now seen corresponding path program 2 times [2024-06-28 02:04:39,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:39,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165726782] [2024-06-28 02:04:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:39,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:39,806 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 02:04:39,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:39,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165726782] [2024-06-28 02:04:39,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165726782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:39,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:39,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:39,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236005965] [2024-06-28 02:04:39,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:39,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:39,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:39,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:39,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:39,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:39,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 354 transitions, 4818 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:39,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:39,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:39,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:41,549 INFO L124 PetriNetUnfolderBase]: 5670/8863 cut-off events. [2024-06-28 02:04:41,549 INFO L125 PetriNetUnfolderBase]: For 192349/192349 co-relation queries the response was YES. [2024-06-28 02:04:41,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58526 conditions, 8863 events. 5670/8863 cut-off events. For 192349/192349 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 54064 event pairs, 1757 based on Foata normal form. 4/8633 useless extension candidates. Maximal degree in co-relation 58421. Up to 7970 conditions per place. [2024-06-28 02:04:41,643 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 342 selfloop transitions, 45 changer transitions 0/394 dead transitions. [2024-06-28 02:04:41,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 394 transitions, 5906 flow [2024-06-28 02:04:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 02:04:41,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-28 02:04:41,644 INFO L175 Difference]: Start difference. First operand has 208 places, 354 transitions, 4818 flow. Second operand 8 states and 169 transitions. [2024-06-28 02:04:41,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 394 transitions, 5906 flow [2024-06-28 02:04:42,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 394 transitions, 5789 flow, removed 48 selfloop flow, removed 2 redundant places. [2024-06-28 02:04:42,145 INFO L231 Difference]: Finished difference. Result has 215 places, 360 transitions, 4930 flow [2024-06-28 02:04:42,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4930, PETRI_PLACES=215, PETRI_TRANSITIONS=360} [2024-06-28 02:04:42,146 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 164 predicate places. [2024-06-28 02:04:42,146 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 360 transitions, 4930 flow [2024-06-28 02:04:42,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:42,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:42,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:42,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:04:42,147 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:42,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:42,147 INFO L85 PathProgramCache]: Analyzing trace with hash 105858377, now seen corresponding path program 3 times [2024-06-28 02:04:42,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:42,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143099441] [2024-06-28 02:04:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:42,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:42,618 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 02:04:42,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:42,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143099441] [2024-06-28 02:04:42,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143099441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:42,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:42,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:42,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039131094] [2024-06-28 02:04:42,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:42,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:42,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:42,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:42,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:42,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:42,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 360 transitions, 4930 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:42,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:42,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:42,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:44,288 INFO L124 PetriNetUnfolderBase]: 5658/8844 cut-off events. [2024-06-28 02:04:44,288 INFO L125 PetriNetUnfolderBase]: For 194315/194315 co-relation queries the response was YES. [2024-06-28 02:04:44,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58406 conditions, 8844 events. 5658/8844 cut-off events. For 194315/194315 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 53920 event pairs, 1760 based on Foata normal form. 4/8614 useless extension candidates. Maximal degree in co-relation 58298. Up to 7962 conditions per place. [2024-06-28 02:04:44,391 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 335 selfloop transitions, 43 changer transitions 0/385 dead transitions. [2024-06-28 02:04:44,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 385 transitions, 5792 flow [2024-06-28 02:04:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:04:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:04:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 02:04:44,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925925925925926 [2024-06-28 02:04:44,392 INFO L175 Difference]: Start difference. First operand has 215 places, 360 transitions, 4930 flow. Second operand 6 states and 133 transitions. [2024-06-28 02:04:44,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 385 transitions, 5792 flow [2024-06-28 02:04:44,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 385 transitions, 5606 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-28 02:04:44,916 INFO L231 Difference]: Finished difference. Result has 216 places, 360 transitions, 4838 flow [2024-06-28 02:04:44,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4744, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4838, PETRI_PLACES=216, PETRI_TRANSITIONS=360} [2024-06-28 02:04:44,917 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 165 predicate places. [2024-06-28 02:04:44,917 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 360 transitions, 4838 flow [2024-06-28 02:04:44,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:44,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:44,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:44,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:04:44,918 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:44,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:44,918 INFO L85 PathProgramCache]: Analyzing trace with hash 106073703, now seen corresponding path program 1 times [2024-06-28 02:04:44,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:44,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081176615] [2024-06-28 02:04:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:44,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:45,619 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 02:04:45,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:45,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081176615] [2024-06-28 02:04:45,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081176615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:45,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:45,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:04:45,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881421636] [2024-06-28 02:04:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:45,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:04:45,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:45,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:04:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:04:45,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:45,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 360 transitions, 4838 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:45,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:45,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:45,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:47,120 INFO L124 PetriNetUnfolderBase]: 5653/8834 cut-off events. [2024-06-28 02:04:47,121 INFO L125 PetriNetUnfolderBase]: For 194725/194725 co-relation queries the response was YES. [2024-06-28 02:04:47,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58017 conditions, 8834 events. 5653/8834 cut-off events. For 194725/194725 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 53766 event pairs, 1752 based on Foata normal form. 2/8604 useless extension candidates. Maximal degree in co-relation 57908. Up to 8078 conditions per place. [2024-06-28 02:04:47,226 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 349 selfloop transitions, 25 changer transitions 0/381 dead transitions. [2024-06-28 02:04:47,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 381 transitions, 5712 flow [2024-06-28 02:04:47,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:04:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:04:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-28 02:04:47,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 02:04:47,228 INFO L175 Difference]: Start difference. First operand has 216 places, 360 transitions, 4838 flow. Second operand 6 states and 123 transitions. [2024-06-28 02:04:47,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 381 transitions, 5712 flow [2024-06-28 02:04:47,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 381 transitions, 5626 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 02:04:47,774 INFO L231 Difference]: Finished difference. Result has 217 places, 363 transitions, 4874 flow [2024-06-28 02:04:47,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4752, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4874, PETRI_PLACES=217, PETRI_TRANSITIONS=363} [2024-06-28 02:04:47,775 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 166 predicate places. [2024-06-28 02:04:47,775 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 363 transitions, 4874 flow [2024-06-28 02:04:47,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:47,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:47,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:47,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:04:47,775 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:47,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:47,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1081984733, now seen corresponding path program 1 times [2024-06-28 02:04:47,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:47,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904890460] [2024-06-28 02:04:47,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:47,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:48,448 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 02:04:48,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:48,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904890460] [2024-06-28 02:04:48,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904890460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:48,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:48,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:04:48,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275889227] [2024-06-28 02:04:48,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:48,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:04:48,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:48,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:04:48,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:04:48,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:48,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 363 transitions, 4874 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 02:04:48,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:48,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:48,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:50,059 INFO L124 PetriNetUnfolderBase]: 5920/9184 cut-off events. [2024-06-28 02:04:50,059 INFO L125 PetriNetUnfolderBase]: For 215910/215927 co-relation queries the response was YES. [2024-06-28 02:04:50,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61513 conditions, 9184 events. 5920/9184 cut-off events. For 215910/215927 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 56046 event pairs, 1407 based on Foata normal form. 17/8972 useless extension candidates. Maximal degree in co-relation 61403. Up to 6816 conditions per place. [2024-06-28 02:04:50,170 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 333 selfloop transitions, 128 changer transitions 0/468 dead transitions. [2024-06-28 02:04:50,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 468 transitions, 7067 flow [2024-06-28 02:04:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 02:04:50,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-28 02:04:50,172 INFO L175 Difference]: Start difference. First operand has 217 places, 363 transitions, 4874 flow. Second operand 8 states and 201 transitions. [2024-06-28 02:04:50,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 468 transitions, 7067 flow [2024-06-28 02:04:50,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 468 transitions, 6971 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 02:04:50,776 INFO L231 Difference]: Finished difference. Result has 224 places, 404 transitions, 5980 flow [2024-06-28 02:04:50,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4778, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5980, PETRI_PLACES=224, PETRI_TRANSITIONS=404} [2024-06-28 02:04:50,777 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 173 predicate places. [2024-06-28 02:04:50,777 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 404 transitions, 5980 flow [2024-06-28 02:04:50,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 02:04:50,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:50,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:50,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:04:50,778 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:50,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:50,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1081993413, now seen corresponding path program 1 times [2024-06-28 02:04:50,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:50,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129983314] [2024-06-28 02:04:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:50,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:51,277 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 02:04:51,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:51,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129983314] [2024-06-28 02:04:51,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129983314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:51,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:51,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:51,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059817199] [2024-06-28 02:04:51,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:51,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:51,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:51,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:51,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:51,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:51,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 404 transitions, 5980 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:51,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:51,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:51,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:53,063 INFO L124 PetriNetUnfolderBase]: 6374/9801 cut-off events. [2024-06-28 02:04:53,064 INFO L125 PetriNetUnfolderBase]: For 265878/265895 co-relation queries the response was YES. [2024-06-28 02:04:53,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70884 conditions, 9801 events. 6374/9801 cut-off events. For 265878/265895 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 59423 event pairs, 1376 based on Foata normal form. 26/9595 useless extension candidates. Maximal degree in co-relation 70770. Up to 6767 conditions per place. [2024-06-28 02:04:53,183 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 328 selfloop transitions, 158 changer transitions 0/493 dead transitions. [2024-06-28 02:04:53,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 493 transitions, 8137 flow [2024-06-28 02:04:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 02:04:53,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527777777777778 [2024-06-28 02:04:53,185 INFO L175 Difference]: Start difference. First operand has 224 places, 404 transitions, 5980 flow. Second operand 8 states and 199 transitions. [2024-06-28 02:04:53,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 493 transitions, 8137 flow [2024-06-28 02:04:54,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 493 transitions, 7848 flow, removed 124 selfloop flow, removed 2 redundant places. [2024-06-28 02:04:54,189 INFO L231 Difference]: Finished difference. Result has 231 places, 434 transitions, 6708 flow [2024-06-28 02:04:54,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5771, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6708, PETRI_PLACES=231, PETRI_TRANSITIONS=434} [2024-06-28 02:04:54,190 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 180 predicate places. [2024-06-28 02:04:54,190 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 434 transitions, 6708 flow [2024-06-28 02:04:54,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:54,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:54,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:54,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:04:54,190 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:54,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:54,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1476683029, now seen corresponding path program 2 times [2024-06-28 02:04:54,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:54,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55320263] [2024-06-28 02:04:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:54,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:54,861 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 02:04:54,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:54,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55320263] [2024-06-28 02:04:54,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55320263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:54,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:54,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:54,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681322426] [2024-06-28 02:04:54,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:54,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:54,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:54,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:54,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:54,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:54,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 434 transitions, 6708 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:54,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:54,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:54,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:04:56,928 INFO L124 PetriNetUnfolderBase]: 6345/9759 cut-off events. [2024-06-28 02:04:56,929 INFO L125 PetriNetUnfolderBase]: For 267971/267988 co-relation queries the response was YES. [2024-06-28 02:04:57,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71936 conditions, 9759 events. 6345/9759 cut-off events. For 267971/267988 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 59218 event pairs, 1406 based on Foata normal form. 23/9551 useless extension candidates. Maximal degree in co-relation 71819. Up to 7490 conditions per place. [2024-06-28 02:04:57,051 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 362 selfloop transitions, 124 changer transitions 0/493 dead transitions. [2024-06-28 02:04:57,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 493 transitions, 8233 flow [2024-06-28 02:04:57,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:04:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:04:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 02:04:57,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 02:04:57,053 INFO L175 Difference]: Start difference. First operand has 231 places, 434 transitions, 6708 flow. Second operand 8 states and 196 transitions. [2024-06-28 02:04:57,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 493 transitions, 8233 flow [2024-06-28 02:04:57,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 493 transitions, 7976 flow, removed 108 selfloop flow, removed 2 redundant places. [2024-06-28 02:04:58,000 INFO L231 Difference]: Finished difference. Result has 237 places, 435 transitions, 6736 flow [2024-06-28 02:04:58,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6451, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6736, PETRI_PLACES=237, PETRI_TRANSITIONS=435} [2024-06-28 02:04:58,000 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 186 predicate places. [2024-06-28 02:04:58,001 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 435 transitions, 6736 flow [2024-06-28 02:04:58,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:04:58,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:04:58,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:04:58,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:04:58,001 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:04:58,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:04:58,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1085567341, now seen corresponding path program 1 times [2024-06-28 02:04:58,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:04:58,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114253863] [2024-06-28 02:04:58,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:04:58,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:04:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:04:58,508 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 02:04:58,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:04:58,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114253863] [2024-06-28 02:04:58,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114253863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:04:58,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:04:58,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:04:58,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249415080] [2024-06-28 02:04:58,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:04:58,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:04:58,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:04:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:04:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:04:58,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:04:58,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 435 transitions, 6736 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:04:58,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:04:58,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:04:58,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:00,636 INFO L124 PetriNetUnfolderBase]: 6471/9965 cut-off events. [2024-06-28 02:05:00,636 INFO L125 PetriNetUnfolderBase]: For 274972/274974 co-relation queries the response was YES. [2024-06-28 02:05:00,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73705 conditions, 9965 events. 6471/9965 cut-off events. For 274972/274974 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 60901 event pairs, 1423 based on Foata normal form. 6/9728 useless extension candidates. Maximal degree in co-relation 73586. Up to 8448 conditions per place. [2024-06-28 02:05:00,752 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 387 selfloop transitions, 104 changer transitions 0/498 dead transitions. [2024-06-28 02:05:00,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 498 transitions, 8626 flow [2024-06-28 02:05:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:00,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 02:05:00,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5174603174603175 [2024-06-28 02:05:00,753 INFO L175 Difference]: Start difference. First operand has 237 places, 435 transitions, 6736 flow. Second operand 7 states and 163 transitions. [2024-06-28 02:05:00,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 498 transitions, 8626 flow [2024-06-28 02:05:01,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 498 transitions, 8293 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:01,731 INFO L231 Difference]: Finished difference. Result has 240 places, 450 transitions, 7062 flow [2024-06-28 02:05:01,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6439, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7062, PETRI_PLACES=240, PETRI_TRANSITIONS=450} [2024-06-28 02:05:01,732 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 189 predicate places. [2024-06-28 02:05:01,732 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 450 transitions, 7062 flow [2024-06-28 02:05:01,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:05:01,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:01,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:01,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:05:01,736 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:01,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1090328941, now seen corresponding path program 2 times [2024-06-28 02:05:01,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:01,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241922256] [2024-06-28 02:05:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:01,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:02,293 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 02:05:02,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:02,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241922256] [2024-06-28 02:05:02,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241922256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:02,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:02,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:02,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450773418] [2024-06-28 02:05:02,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:02,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:02,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:02,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:02,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:02,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:02,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 450 transitions, 7062 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:02,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:02,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:02,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:04,510 INFO L124 PetriNetUnfolderBase]: 6455/9916 cut-off events. [2024-06-28 02:05:04,510 INFO L125 PetriNetUnfolderBase]: For 276155/276155 co-relation queries the response was YES. [2024-06-28 02:05:04,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73079 conditions, 9916 events. 6455/9916 cut-off events. For 276155/276155 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 60245 event pairs, 1642 based on Foata normal form. 4/9685 useless extension candidates. Maximal degree in co-relation 72958. Up to 9048 conditions per place. [2024-06-28 02:05:04,620 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 442 selfloop transitions, 42 changer transitions 0/491 dead transitions. [2024-06-28 02:05:04,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 491 transitions, 8283 flow [2024-06-28 02:05:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:04,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-28 02:05:04,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 02:05:04,623 INFO L175 Difference]: Start difference. First operand has 240 places, 450 transitions, 7062 flow. Second operand 8 states and 172 transitions. [2024-06-28 02:05:04,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 491 transitions, 8283 flow [2024-06-28 02:05:05,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 491 transitions, 8026 flow, removed 82 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:05,530 INFO L231 Difference]: Finished difference. Result has 245 places, 450 transitions, 6902 flow [2024-06-28 02:05:05,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6805, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6902, PETRI_PLACES=245, PETRI_TRANSITIONS=450} [2024-06-28 02:05:05,532 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 194 predicate places. [2024-06-28 02:05:05,532 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 450 transitions, 6902 flow [2024-06-28 02:05:05,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:05,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:05,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:05,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:05:05,534 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:05,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:05,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1090335513, now seen corresponding path program 2 times [2024-06-28 02:05:05,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:05,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548253806] [2024-06-28 02:05:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:05,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:06,063 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 02:05:06,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:06,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548253806] [2024-06-28 02:05:06,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548253806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:06,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:06,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:06,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91248421] [2024-06-28 02:05:06,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:06,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:06,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:06,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:06,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:06,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:06,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 450 transitions, 6902 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:06,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:06,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:06,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:08,624 INFO L124 PetriNetUnfolderBase]: 7276/11012 cut-off events. [2024-06-28 02:05:08,624 INFO L125 PetriNetUnfolderBase]: For 332427/332427 co-relation queries the response was YES. [2024-06-28 02:05:08,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82260 conditions, 11012 events. 7276/11012 cut-off events. For 332427/332427 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 66331 event pairs, 1686 based on Foata normal form. 6/10782 useless extension candidates. Maximal degree in co-relation 82138. Up to 9343 conditions per place. [2024-06-28 02:05:08,785 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 448 selfloop transitions, 91 changer transitions 0/546 dead transitions. [2024-06-28 02:05:08,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 546 transitions, 9358 flow [2024-06-28 02:05:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:05:08,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:05:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 223 transitions. [2024-06-28 02:05:08,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4955555555555556 [2024-06-28 02:05:08,787 INFO L175 Difference]: Start difference. First operand has 245 places, 450 transitions, 6902 flow. Second operand 10 states and 223 transitions. [2024-06-28 02:05:08,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 546 transitions, 9358 flow [2024-06-28 02:05:09,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 546 transitions, 9270 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:05:09,882 INFO L231 Difference]: Finished difference. Result has 250 places, 488 transitions, 7855 flow [2024-06-28 02:05:09,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6818, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7855, PETRI_PLACES=250, PETRI_TRANSITIONS=488} [2024-06-28 02:05:09,882 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 199 predicate places. [2024-06-28 02:05:09,883 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 488 transitions, 7855 flow [2024-06-28 02:05:09,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:09,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:09,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:09,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:05:09,883 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:09,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:09,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1090325283, now seen corresponding path program 3 times [2024-06-28 02:05:09,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:09,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217020842] [2024-06-28 02:05:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:09,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:10,447 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 02:05:10,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:10,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217020842] [2024-06-28 02:05:10,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217020842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:10,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:10,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:05:10,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724950450] [2024-06-28 02:05:10,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:10,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:05:10,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:10,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:05:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:05:10,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:10,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 488 transitions, 7855 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 02:05:10,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:10,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:10,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:12,998 INFO L124 PetriNetUnfolderBase]: 7252/10988 cut-off events. [2024-06-28 02:05:12,999 INFO L125 PetriNetUnfolderBase]: For 343749/343749 co-relation queries the response was YES. [2024-06-28 02:05:13,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83842 conditions, 10988 events. 7252/10988 cut-off events. For 343749/343749 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 66324 event pairs, 1679 based on Foata normal form. 12/10762 useless extension candidates. Maximal degree in co-relation 83717. Up to 9338 conditions per place. [2024-06-28 02:05:13,127 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 443 selfloop transitions, 93 changer transitions 0/543 dead transitions. [2024-06-28 02:05:13,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 543 transitions, 9579 flow [2024-06-28 02:05:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:05:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:05:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-28 02:05:13,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508641975308642 [2024-06-28 02:05:13,129 INFO L175 Difference]: Start difference. First operand has 250 places, 488 transitions, 7855 flow. Second operand 9 states and 206 transitions. [2024-06-28 02:05:13,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 543 transitions, 9579 flow [2024-06-28 02:05:14,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 543 transitions, 9252 flow, removed 132 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:14,423 INFO L231 Difference]: Finished difference. Result has 256 places, 494 transitions, 7940 flow [2024-06-28 02:05:14,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7536, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7940, PETRI_PLACES=256, PETRI_TRANSITIONS=494} [2024-06-28 02:05:14,424 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 205 predicate places. [2024-06-28 02:05:14,424 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 494 transitions, 7940 flow [2024-06-28 02:05:14,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 02:05:14,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:14,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:14,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:05:14,425 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:14,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1090324973, now seen corresponding path program 3 times [2024-06-28 02:05:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:14,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995758938] [2024-06-28 02:05:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:14,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:15,069 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 02:05:15,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995758938] [2024-06-28 02:05:15,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995758938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:15,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:15,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:05:15,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457957044] [2024-06-28 02:05:15,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:15,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:05:15,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:15,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:05:15,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:05:15,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:15,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 494 transitions, 7940 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 02:05:15,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:15,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:15,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:17,402 INFO L124 PetriNetUnfolderBase]: 7221/10949 cut-off events. [2024-06-28 02:05:17,403 INFO L125 PetriNetUnfolderBase]: For 334363/334363 co-relation queries the response was YES. [2024-06-28 02:05:17,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82927 conditions, 10949 events. 7221/10949 cut-off events. For 334363/334363 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 66304 event pairs, 1684 based on Foata normal form. 9/10719 useless extension candidates. Maximal degree in co-relation 82798. Up to 9561 conditions per place. [2024-06-28 02:05:17,563 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 452 selfloop transitions, 84 changer transitions 0/543 dead transitions. [2024-06-28 02:05:17,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 543 transitions, 9451 flow [2024-06-28 02:05:17,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:05:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:05:17,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-28 02:05:17,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012345679012346 [2024-06-28 02:05:17,573 INFO L175 Difference]: Start difference. First operand has 256 places, 494 transitions, 7940 flow. Second operand 9 states and 203 transitions. [2024-06-28 02:05:17,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 543 transitions, 9451 flow [2024-06-28 02:05:19,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 543 transitions, 9212 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-28 02:05:19,103 INFO L231 Difference]: Finished difference. Result has 263 places, 496 transitions, 7982 flow [2024-06-28 02:05:19,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7701, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7982, PETRI_PLACES=263, PETRI_TRANSITIONS=496} [2024-06-28 02:05:19,103 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 212 predicate places. [2024-06-28 02:05:19,104 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 496 transitions, 7982 flow [2024-06-28 02:05:19,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 02:05:19,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:19,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:19,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:05:19,104 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:19,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:19,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1771791479, now seen corresponding path program 3 times [2024-06-28 02:05:19,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:19,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178094719] [2024-06-28 02:05:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:19,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:19,654 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 02:05:19,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:19,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178094719] [2024-06-28 02:05:19,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178094719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:19,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:19,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:19,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102057640] [2024-06-28 02:05:19,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:19,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:19,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:19,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:19,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 496 transitions, 7982 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:19,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:19,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:19,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:21,904 INFO L124 PetriNetUnfolderBase]: 7261/11006 cut-off events. [2024-06-28 02:05:21,904 INFO L125 PetriNetUnfolderBase]: For 338954/338954 co-relation queries the response was YES. [2024-06-28 02:05:22,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83732 conditions, 11006 events. 7261/11006 cut-off events. For 338954/338954 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 66316 event pairs, 2111 based on Foata normal form. 2/10769 useless extension candidates. Maximal degree in co-relation 83599. Up to 10122 conditions per place. [2024-06-28 02:05:22,058 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 485 selfloop transitions, 42 changer transitions 0/534 dead transitions. [2024-06-28 02:05:22,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 534 transitions, 9423 flow [2024-06-28 02:05:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:22,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-28 02:05:22,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793650793650794 [2024-06-28 02:05:22,060 INFO L175 Difference]: Start difference. First operand has 263 places, 496 transitions, 7982 flow. Second operand 7 states and 151 transitions. [2024-06-28 02:05:22,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 534 transitions, 9423 flow [2024-06-28 02:05:23,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 534 transitions, 9272 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 02:05:23,343 INFO L231 Difference]: Finished difference. Result has 266 places, 501 transitions, 8051 flow [2024-06-28 02:05:23,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7831, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8051, PETRI_PLACES=266, PETRI_TRANSITIONS=501} [2024-06-28 02:05:23,344 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 215 predicate places. [2024-06-28 02:05:23,344 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 501 transitions, 8051 flow [2024-06-28 02:05:23,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:23,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:23,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:23,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:05:23,345 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:23,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash 526709537, now seen corresponding path program 4 times [2024-06-28 02:05:23,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:23,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139483457] [2024-06-28 02:05:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:23,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:23,807 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 02:05:23,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:23,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139483457] [2024-06-28 02:05:23,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139483457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:23,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:23,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:05:23,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524475231] [2024-06-28 02:05:23,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:23,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:05:23,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:23,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:05:23,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:05:23,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:23,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 501 transitions, 8051 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:23,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:23,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:23,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:26,091 INFO L124 PetriNetUnfolderBase]: 7255/10992 cut-off events. [2024-06-28 02:05:26,091 INFO L125 PetriNetUnfolderBase]: For 345012/345012 co-relation queries the response was YES. [2024-06-28 02:05:26,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83347 conditions, 10992 events. 7255/10992 cut-off events. For 345012/345012 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 66140 event pairs, 2122 based on Foata normal form. 2/10757 useless extension candidates. Maximal degree in co-relation 83213. Up to 10211 conditions per place. [2024-06-28 02:05:26,484 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 491 selfloop transitions, 27 changer transitions 0/525 dead transitions. [2024-06-28 02:05:26,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 525 transitions, 9184 flow [2024-06-28 02:05:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:26,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-28 02:05:26,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45396825396825397 [2024-06-28 02:05:26,486 INFO L175 Difference]: Start difference. First operand has 266 places, 501 transitions, 8051 flow. Second operand 7 states and 143 transitions. [2024-06-28 02:05:26,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 525 transitions, 9184 flow [2024-06-28 02:05:27,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 525 transitions, 8835 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-28 02:05:27,539 INFO L231 Difference]: Finished difference. Result has 267 places, 501 transitions, 7764 flow [2024-06-28 02:05:27,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7702, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7764, PETRI_PLACES=267, PETRI_TRANSITIONS=501} [2024-06-28 02:05:27,540 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 216 predicate places. [2024-06-28 02:05:27,540 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 501 transitions, 7764 flow [2024-06-28 02:05:27,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:27,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:27,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:27,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:05:27,540 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:27,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:27,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1013370033, now seen corresponding path program 5 times [2024-06-28 02:05:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:27,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337812090] [2024-06-28 02:05:27,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:27,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:05:28,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:28,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337812090] [2024-06-28 02:05:28,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337812090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:28,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:28,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992649753] [2024-06-28 02:05:28,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:28,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:28,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:28,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 501 transitions, 7764 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:05:28,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:28,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:28,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:30,328 INFO L124 PetriNetUnfolderBase]: 7249/10984 cut-off events. [2024-06-28 02:05:30,328 INFO L125 PetriNetUnfolderBase]: For 343717/343717 co-relation queries the response was YES. [2024-06-28 02:05:30,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82523 conditions, 10984 events. 7249/10984 cut-off events. For 343717/343717 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 66116 event pairs, 2098 based on Foata normal form. 2/10749 useless extension candidates. Maximal degree in co-relation 82389. Up to 10175 conditions per place. [2024-06-28 02:05:30,467 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 490 selfloop transitions, 29 changer transitions 0/526 dead transitions. [2024-06-28 02:05:30,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 526 transitions, 8917 flow [2024-06-28 02:05:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:30,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-28 02:05:30,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 02:05:30,469 INFO L175 Difference]: Start difference. First operand has 267 places, 501 transitions, 7764 flow. Second operand 6 states and 130 transitions. [2024-06-28 02:05:30,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 526 transitions, 8917 flow [2024-06-28 02:05:31,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 526 transitions, 8745 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 02:05:31,602 INFO L231 Difference]: Finished difference. Result has 267 places, 501 transitions, 7665 flow [2024-06-28 02:05:31,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7592, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7665, PETRI_PLACES=267, PETRI_TRANSITIONS=501} [2024-06-28 02:05:31,603 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 216 predicate places. [2024-06-28 02:05:31,603 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 501 transitions, 7665 flow [2024-06-28 02:05:31,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:05:31,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:31,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:31,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:05:31,604 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:31,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:31,605 INFO L85 PathProgramCache]: Analyzing trace with hash -50309463, now seen corresponding path program 6 times [2024-06-28 02:05:31,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:31,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34332051] [2024-06-28 02:05:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:31,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:32,145 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 02:05:32,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:32,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34332051] [2024-06-28 02:05:32,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34332051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:32,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:32,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:32,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680784026] [2024-06-28 02:05:32,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:32,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:32,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:32,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 501 transitions, 7665 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:05:32,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:32,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:32,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:34,417 INFO L124 PetriNetUnfolderBase]: 7233/10989 cut-off events. [2024-06-28 02:05:34,417 INFO L125 PetriNetUnfolderBase]: For 343555/343555 co-relation queries the response was YES. [2024-06-28 02:05:34,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82116 conditions, 10989 events. 7233/10989 cut-off events. For 343555/343555 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 66772 event pairs, 1560 based on Foata normal form. 4/10747 useless extension candidates. Maximal degree in co-relation 81982. Up to 9840 conditions per place. [2024-06-28 02:05:34,582 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 474 selfloop transitions, 63 changer transitions 0/544 dead transitions. [2024-06-28 02:05:34,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 544 transitions, 9041 flow [2024-06-28 02:05:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:05:34,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:05:34,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 02:05:34,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-06-28 02:05:34,583 INFO L175 Difference]: Start difference. First operand has 267 places, 501 transitions, 7665 flow. Second operand 7 states and 160 transitions. [2024-06-28 02:05:34,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 544 transitions, 9041 flow [2024-06-28 02:05:36,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 544 transitions, 8930 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 02:05:36,041 INFO L231 Difference]: Finished difference. Result has 268 places, 501 transitions, 7705 flow [2024-06-28 02:05:36,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7554, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7705, PETRI_PLACES=268, PETRI_TRANSITIONS=501} [2024-06-28 02:05:36,042 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 217 predicate places. [2024-06-28 02:05:36,042 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 501 transitions, 7705 flow [2024-06-28 02:05:36,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 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 02:05:36,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:36,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:36,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:05:36,043 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:36,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:36,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1007141761, now seen corresponding path program 4 times [2024-06-28 02:05:36,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:36,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424479481] [2024-06-28 02:05:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:36,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:36,508 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 02:05:36,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424479481] [2024-06-28 02:05:36,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424479481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:36,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:36,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:36,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468697820] [2024-06-28 02:05:36,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:36,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:36,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:36,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:36,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:36,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 501 transitions, 7705 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:36,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:36,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:36,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:38,905 INFO L124 PetriNetUnfolderBase]: 7496/11314 cut-off events. [2024-06-28 02:05:38,906 INFO L125 PetriNetUnfolderBase]: For 375450/375450 co-relation queries the response was YES. [2024-06-28 02:05:39,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86101 conditions, 11314 events. 7496/11314 cut-off events. For 375450/375450 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 68012 event pairs, 2110 based on Foata normal form. 6/11083 useless extension candidates. Maximal degree in co-relation 85967. Up to 10179 conditions per place. [2024-06-28 02:05:39,063 INFO L140 encePairwiseOnDemand]: 30/45 looper letters, 482 selfloop transitions, 68 changer transitions 0/557 dead transitions. [2024-06-28 02:05:39,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 557 transitions, 9374 flow [2024-06-28 02:05:39,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:05:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:05:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-28 02:05:39,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47901234567901235 [2024-06-28 02:05:39,065 INFO L175 Difference]: Start difference. First operand has 268 places, 501 transitions, 7705 flow. Second operand 9 states and 194 transitions. [2024-06-28 02:05:39,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 557 transitions, 9374 flow [2024-06-28 02:05:40,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 557 transitions, 9198 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:05:40,593 INFO L231 Difference]: Finished difference. Result has 272 places, 519 transitions, 8050 flow [2024-06-28 02:05:40,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7531, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8050, PETRI_PLACES=272, PETRI_TRANSITIONS=519} [2024-06-28 02:05:40,594 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 221 predicate places. [2024-06-28 02:05:40,594 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 519 transitions, 8050 flow [2024-06-28 02:05:40,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:40,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:40,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:40,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:05:40,595 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:40,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:40,595 INFO L85 PathProgramCache]: Analyzing trace with hash -50302891, now seen corresponding path program 5 times [2024-06-28 02:05:40,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:40,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216927415] [2024-06-28 02:05:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:40,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:41,154 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 02:05:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216927415] [2024-06-28 02:05:41,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216927415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:41,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:41,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:05:41,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602095916] [2024-06-28 02:05:41,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:41,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:05:41,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:41,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:05:41,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:05:41,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:41,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 519 transitions, 8050 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 02:05:41,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:41,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:41,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:43,702 INFO L124 PetriNetUnfolderBase]: 8395/12526 cut-off events. [2024-06-28 02:05:43,703 INFO L125 PetriNetUnfolderBase]: For 460564/460564 co-relation queries the response was YES. [2024-06-28 02:05:43,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101362 conditions, 12526 events. 8395/12526 cut-off events. For 460564/460564 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 75561 event pairs, 1640 based on Foata normal form. 6/12290 useless extension candidates. Maximal degree in co-relation 101226. Up to 9823 conditions per place. [2024-06-28 02:05:43,885 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 456 selfloop transitions, 146 changer transitions 0/609 dead transitions. [2024-06-28 02:05:43,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 609 transitions, 10681 flow [2024-06-28 02:05:43,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:43,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 02:05:43,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 02:05:43,893 INFO L175 Difference]: Start difference. First operand has 272 places, 519 transitions, 8050 flow. Second operand 8 states and 190 transitions. [2024-06-28 02:05:43,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 609 transitions, 10681 flow [2024-06-28 02:05:45,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 609 transitions, 10444 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-06-28 02:05:45,825 INFO L231 Difference]: Finished difference. Result has 278 places, 560 transitions, 9190 flow [2024-06-28 02:05:45,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7813, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9190, PETRI_PLACES=278, PETRI_TRANSITIONS=560} [2024-06-28 02:05:45,826 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 227 predicate places. [2024-06-28 02:05:45,826 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 560 transitions, 9190 flow [2024-06-28 02:05:45,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 02:05:45,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:45,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:45,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:05:45,827 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:45,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:45,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1860803657, now seen corresponding path program 4 times [2024-06-28 02:05:45,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:45,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397275836] [2024-06-28 02:05:45,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:45,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:46,458 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 02:05:46,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:46,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397275836] [2024-06-28 02:05:46,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397275836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:46,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:46,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:46,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744945565] [2024-06-28 02:05:46,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:46,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:46,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:46,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:46,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:46,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:46,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 560 transitions, 9190 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:46,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:46,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:46,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:49,387 INFO L124 PetriNetUnfolderBase]: 8382/12508 cut-off events. [2024-06-28 02:05:49,387 INFO L125 PetriNetUnfolderBase]: For 471231/471231 co-relation queries the response was YES. [2024-06-28 02:05:49,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102841 conditions, 12508 events. 8382/12508 cut-off events. For 471231/471231 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 75523 event pairs, 1594 based on Foata normal form. 9/12276 useless extension candidates. Maximal degree in co-relation 102702. Up to 10189 conditions per place. [2024-06-28 02:05:49,567 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 472 selfloop transitions, 143 changer transitions 0/622 dead transitions. [2024-06-28 02:05:49,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 622 transitions, 11019 flow [2024-06-28 02:05:49,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:05:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:05:49,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-28 02:05:49,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5638888888888889 [2024-06-28 02:05:49,569 INFO L175 Difference]: Start difference. First operand has 278 places, 560 transitions, 9190 flow. Second operand 8 states and 203 transitions. [2024-06-28 02:05:49,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 622 transitions, 11019 flow [2024-06-28 02:05:51,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 622 transitions, 10682 flow, removed 142 selfloop flow, removed 3 redundant places. [2024-06-28 02:05:51,770 INFO L231 Difference]: Finished difference. Result has 285 places, 563 transitions, 9407 flow [2024-06-28 02:05:51,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8869, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9407, PETRI_PLACES=285, PETRI_TRANSITIONS=563} [2024-06-28 02:05:51,770 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 234 predicate places. [2024-06-28 02:05:51,771 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 563 transitions, 9407 flow [2024-06-28 02:05:51,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:51,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:51,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:51,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:05:51,771 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:51,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:51,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1006696849, now seen corresponding path program 1 times [2024-06-28 02:05:51,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:51,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847231644] [2024-06-28 02:05:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:51,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:52,372 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 02:05:52,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:52,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847231644] [2024-06-28 02:05:52,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847231644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:52,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:52,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:52,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375244309] [2024-06-28 02:05:52,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:52,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:52,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:52,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:52,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:52,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 563 transitions, 9407 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:52,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:52,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:52,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:05:56,188 INFO L124 PetriNetUnfolderBase]: 8379/12492 cut-off events. [2024-06-28 02:05:56,189 INFO L125 PetriNetUnfolderBase]: For 464986/464986 co-relation queries the response was YES. [2024-06-28 02:05:56,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103401 conditions, 12492 events. 8379/12492 cut-off events. For 464986/464986 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 74960 event pairs, 2350 based on Foata normal form. 1/12257 useless extension candidates. Maximal degree in co-relation 103258. Up to 11713 conditions per place. [2024-06-28 02:05:56,349 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 547 selfloop transitions, 30 changer transitions 0/584 dead transitions. [2024-06-28 02:05:56,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 584 transitions, 10740 flow [2024-06-28 02:05:56,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:05:56,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:05:56,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-28 02:05:56,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-28 02:05:56,351 INFO L175 Difference]: Start difference. First operand has 285 places, 563 transitions, 9407 flow. Second operand 6 states and 124 transitions. [2024-06-28 02:05:56,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 584 transitions, 10740 flow [2024-06-28 02:05:58,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 584 transitions, 10413 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-28 02:05:58,574 INFO L231 Difference]: Finished difference. Result has 286 places, 566 transitions, 9261 flow [2024-06-28 02:05:58,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9106, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9261, PETRI_PLACES=286, PETRI_TRANSITIONS=566} [2024-06-28 02:05:58,575 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 235 predicate places. [2024-06-28 02:05:58,575 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 566 transitions, 9261 flow [2024-06-28 02:05:58,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:58,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:05:58,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:05:58,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:05:58,576 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:05:58,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:05:58,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1860803967, now seen corresponding path program 6 times [2024-06-28 02:05:58,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:05:58,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637598189] [2024-06-28 02:05:58,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:05:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:05:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:05:59,195 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 02:05:59,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:05:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637598189] [2024-06-28 02:05:59,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637598189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:05:59,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:05:59,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:05:59,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699100354] [2024-06-28 02:05:59,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:05:59,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:05:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:05:59,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:05:59,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:05:59,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:05:59,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 566 transitions, 9261 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:05:59,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:05:59,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:05:59,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:02,356 INFO L124 PetriNetUnfolderBase]: 8349/12462 cut-off events. [2024-06-28 02:06:02,357 INFO L125 PetriNetUnfolderBase]: For 467149/467149 co-relation queries the response was YES. [2024-06-28 02:06:02,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100712 conditions, 12462 events. 8349/12462 cut-off events. For 467149/467149 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 75118 event pairs, 1581 based on Foata normal form. 12/12234 useless extension candidates. Maximal degree in co-relation 100569. Up to 9811 conditions per place. [2024-06-28 02:06:02,534 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 447 selfloop transitions, 165 changer transitions 0/619 dead transitions. [2024-06-28 02:06:02,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 619 transitions, 10971 flow [2024-06-28 02:06:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:06:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:06:02,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 02:06:02,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 02:06:02,536 INFO L175 Difference]: Start difference. First operand has 286 places, 566 transitions, 9261 flow. Second operand 8 states and 198 transitions. [2024-06-28 02:06:02,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 619 transitions, 10971 flow [2024-06-28 02:06:04,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 619 transitions, 10901 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 02:06:04,384 INFO L231 Difference]: Finished difference. Result has 292 places, 568 transitions, 9650 flow [2024-06-28 02:06:04,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9195, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9650, PETRI_PLACES=292, PETRI_TRANSITIONS=568} [2024-06-28 02:06:04,384 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 241 predicate places. [2024-06-28 02:06:04,385 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 568 transitions, 9650 flow [2024-06-28 02:06:04,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:04,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:04,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:04,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:06:04,385 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:06:04,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:04,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1118159954, now seen corresponding path program 1 times [2024-06-28 02:06:04,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:04,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571866471] [2024-06-28 02:06:04,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:04,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:06:05,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:05,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571866471] [2024-06-28 02:06:05,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571866471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:05,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:05,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:06:05,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442691723] [2024-06-28 02:06:05,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:05,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:06:05,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:05,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:06:05,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:06:05,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:06:05,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 568 transitions, 9650 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 02:06:05,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:05,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:06:05,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:08,589 INFO L124 PetriNetUnfolderBase]: 8382/12527 cut-off events. [2024-06-28 02:06:08,590 INFO L125 PetriNetUnfolderBase]: For 473436/473436 co-relation queries the response was YES. [2024-06-28 02:06:08,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103128 conditions, 12527 events. 8382/12527 cut-off events. For 473436/473436 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 75469 event pairs, 2236 based on Foata normal form. 2/12284 useless extension candidates. Maximal degree in co-relation 102982. Up to 11546 conditions per place. [2024-06-28 02:06:08,764 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 546 selfloop transitions, 55 changer transitions 0/608 dead transitions. [2024-06-28 02:06:08,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 608 transitions, 11220 flow [2024-06-28 02:06:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:08,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:08,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 02:06:08,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 02:06:08,766 INFO L175 Difference]: Start difference. First operand has 292 places, 568 transitions, 9650 flow. Second operand 7 states and 154 transitions. [2024-06-28 02:06:08,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 608 transitions, 11220 flow [2024-06-28 02:06:10,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 608 transitions, 10950 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 02:06:10,709 INFO L231 Difference]: Finished difference. Result has 295 places, 572 transitions, 9587 flow [2024-06-28 02:06:10,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9380, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9587, PETRI_PLACES=295, PETRI_TRANSITIONS=572} [2024-06-28 02:06:10,710 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 244 predicate places. [2024-06-28 02:06:10,710 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 572 transitions, 9587 flow [2024-06-28 02:06:10,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 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 02:06:10,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:10,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:10,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:06:10,711 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:06:10,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash 526603114, now seen corresponding path program 2 times [2024-06-28 02:06:10,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:10,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990195555] [2024-06-28 02:06:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:10,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:11,451 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 02:06:11,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:11,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990195555] [2024-06-28 02:06:11,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990195555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:11,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:11,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:11,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588019959] [2024-06-28 02:06:11,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:11,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:11,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:11,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:11,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:11,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:06:11,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 572 transitions, 9587 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:11,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:11,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:06:11,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:14,734 INFO L124 PetriNetUnfolderBase]: 8415/12580 cut-off events. [2024-06-28 02:06:14,734 INFO L125 PetriNetUnfolderBase]: For 482807/482807 co-relation queries the response was YES. [2024-06-28 02:06:14,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102468 conditions, 12580 events. 8415/12580 cut-off events. For 482807/482807 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 75898 event pairs, 2341 based on Foata normal form. 2/12335 useless extension candidates. Maximal degree in co-relation 102321. Up to 11687 conditions per place. [2024-06-28 02:06:14,899 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 551 selfloop transitions, 47 changer transitions 0/605 dead transitions. [2024-06-28 02:06:14,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 605 transitions, 10979 flow [2024-06-28 02:06:14,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:06:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:06:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 02:06:14,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 02:06:14,900 INFO L175 Difference]: Start difference. First operand has 295 places, 572 transitions, 9587 flow. Second operand 7 states and 150 transitions. [2024-06-28 02:06:14,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 605 transitions, 10979 flow [2024-06-28 02:06:16,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 605 transitions, 10857 flow, removed 37 selfloop flow, removed 3 redundant places. [2024-06-28 02:06:16,710 INFO L231 Difference]: Finished difference. Result has 299 places, 574 transitions, 9615 flow [2024-06-28 02:06:16,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9483, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9615, PETRI_PLACES=299, PETRI_TRANSITIONS=574} [2024-06-28 02:06:16,711 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 248 predicate places. [2024-06-28 02:06:16,711 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 574 transitions, 9615 flow [2024-06-28 02:06:16,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:16,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:16,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:16,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:06:16,712 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:06:16,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:16,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1013361136, now seen corresponding path program 3 times [2024-06-28 02:06:16,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:16,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370887298] [2024-06-28 02:06:16,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:16,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:17,592 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 02:06:17,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:17,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370887298] [2024-06-28 02:06:17,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370887298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:17,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:17,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:17,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639328663] [2024-06-28 02:06:17,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:17,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:17,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:17,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:17,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:17,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:06:17,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 574 transitions, 9615 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:17,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:17,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:06:17,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:20,925 INFO L124 PetriNetUnfolderBase]: 8410/12564 cut-off events. [2024-06-28 02:06:20,926 INFO L125 PetriNetUnfolderBase]: For 487026/487026 co-relation queries the response was YES. [2024-06-28 02:06:21,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102192 conditions, 12564 events. 8410/12564 cut-off events. For 487026/487026 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 75579 event pairs, 2238 based on Foata normal form. 2/12322 useless extension candidates. Maximal degree in co-relation 102043. Up to 11668 conditions per place. [2024-06-28 02:06:21,101 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 546 selfloop transitions, 49 changer transitions 0/602 dead transitions. [2024-06-28 02:06:21,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 602 transitions, 10931 flow [2024-06-28 02:06:21,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:06:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:06:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 02:06:21,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-06-28 02:06:21,103 INFO L175 Difference]: Start difference. First operand has 299 places, 574 transitions, 9615 flow. Second operand 6 states and 134 transitions. [2024-06-28 02:06:21,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 602 transitions, 10931 flow [2024-06-28 02:06:22,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 602 transitions, 10815 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:23,005 INFO L231 Difference]: Finished difference. Result has 300 places, 574 transitions, 9616 flow [2024-06-28 02:06:23,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9499, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9616, PETRI_PLACES=300, PETRI_TRANSITIONS=574} [2024-06-28 02:06:23,007 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 249 predicate places. [2024-06-28 02:06:23,007 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 574 transitions, 9616 flow [2024-06-28 02:06:23,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:23,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:23,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:23,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:06:23,008 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:06:23,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:23,009 INFO L85 PathProgramCache]: Analyzing trace with hash -817948076, now seen corresponding path program 1 times [2024-06-28 02:06:23,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:23,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866568966] [2024-06-28 02:06:23,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:23,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:23,673 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 02:06:23,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:23,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866568966] [2024-06-28 02:06:23,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866568966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:23,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:23,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:06:23,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540616596] [2024-06-28 02:06:23,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:23,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:06:23,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:06:23,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:06:23,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:06:23,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 574 transitions, 9616 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:23,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:23,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:06:23,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:06:26,804 INFO L124 PetriNetUnfolderBase]: 8404/12574 cut-off events. [2024-06-28 02:06:26,804 INFO L125 PetriNetUnfolderBase]: For 487166/487168 co-relation queries the response was YES. [2024-06-28 02:06:26,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102142 conditions, 12574 events. 8404/12574 cut-off events. For 487166/487168 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 76178 event pairs, 1639 based on Foata normal form. 4/12329 useless extension candidates. Maximal degree in co-relation 101992. Up to 11037 conditions per place. [2024-06-28 02:06:26,992 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 505 selfloop transitions, 120 changer transitions 0/632 dead transitions. [2024-06-28 02:06:26,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 632 transitions, 11499 flow [2024-06-28 02:06:26,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:06:26,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:06:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 02:06:26,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 02:06:26,993 INFO L175 Difference]: Start difference. First operand has 300 places, 574 transitions, 9616 flow. Second operand 8 states and 185 transitions. [2024-06-28 02:06:26,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 632 transitions, 11499 flow [2024-06-28 02:06:29,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 632 transitions, 11361 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 02:06:29,029 INFO L231 Difference]: Finished difference. Result has 303 places, 574 transitions, 9727 flow [2024-06-28 02:06:29,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=9478, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9727, PETRI_PLACES=303, PETRI_TRANSITIONS=574} [2024-06-28 02:06:29,030 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 252 predicate places. [2024-06-28 02:06:29,030 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 574 transitions, 9727 flow [2024-06-28 02:06:29,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:29,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:06:29,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:06:29,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:06:29,030 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:06:29,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:06:29,031 INFO L85 PathProgramCache]: Analyzing trace with hash -825569612, now seen corresponding path program 1 times [2024-06-28 02:06:29,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:06:29,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459520885] [2024-06-28 02:06:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:06:29,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:06:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:06:29,829 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 02:06:29,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:06:29,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459520885] [2024-06-28 02:06:29,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459520885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:06:29,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:06:29,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:06:29,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147454063] [2024-06-28 02:06:29,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:06:29,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:06:29,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:06:29,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:06:29,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:06:29,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-28 02:06:29,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 574 transitions, 9727 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:06:29,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:06:29,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-28 02:06:29,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand