./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 16:58:50,973 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 16:58:51,044 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 16:58:51,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 16:58:51,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 16:58:51,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 16:58:51,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 16:58:51,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 16:58:51,093 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 16:58:51,096 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 16:58:51,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 16:58:51,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 16:58:51,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 16:58:51,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 16:58:51,099 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 16:58:51,100 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 16:58:51,100 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 16:58:51,100 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 16:58:51,101 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 16:58:51,101 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 16:58:51,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 16:58:51,102 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 16:58:51,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 16:58:51,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 16:58:51,102 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 16:58:51,103 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 16:58:51,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 16:58:51,103 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 16:58:51,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 16:58:51,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 16:58:51,105 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 16:58:51,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 16:58:51,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:58:51,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 16:58:51,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 16:58:51,106 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 16:58:51,106 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 16:58:51,107 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 16:58:51,107 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 16:58:51,107 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 16:58:51,107 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 16:58:51,107 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 16:58:51,108 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 16:58:51,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 16:58:51,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 16:58:51,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 16:58:51,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 16:58:51,411 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 16:58:51,412 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 16:58:51,413 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-21 16:58:52,522 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 16:58:52,763 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 16:58:52,764 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-21 16:58:52,788 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7ff0b39/a4ec699f776542eeaa53798d9da2362b/FLAG744b009d7 [2024-06-21 16:58:52,799 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b7ff0b39/a4ec699f776542eeaa53798d9da2362b [2024-06-21 16:58:52,801 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 16:58:52,801 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 16:58:52,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-21 16:58:53,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 16:58:53,053 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 16:58:53,054 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 16:58:53,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 16:58:53,059 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 16:58:53,059 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:58:52" (1/2) ... [2024-06-21 16:58:53,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f727ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:58:53, skipping insertion in model container [2024-06-21 16:58:53,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:58:52" (1/2) ... [2024-06-21 16:58:53,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@608e6a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:58:53, skipping insertion in model container [2024-06-21 16:58:53,063 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:58:53" (2/2) ... [2024-06-21 16:58:53,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f727ef and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53, skipping insertion in model container [2024-06-21 16:58:53,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:58:53" (2/2) ... [2024-06-21 16:58:53,064 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 16:58:53,187 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 16:58:53,188 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] (((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-21 16:58:53,188 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] (((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-21 16:58:53,189 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-21 16:58:53,189 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0) [2024-06-21 16:58:53,189 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 16:58:53,190 INFO L106 edCorrectnessWitness]: ghost_update [L862-L862] multithreaded = 1; [2024-06-21 16:58:53,232 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 16:58:53,585 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:58:53,594 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 16:58:53,758 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:58:53,805 INFO L206 MainTranslator]: Completed translation [2024-06-21 16:58:53,806 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53 WrapperNode [2024-06-21 16:58:53,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 16:58:53,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 16:58:53,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 16:58:53,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 16:58:53,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,885 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-21 16:58:53,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 16:58:53,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 16:58:53,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 16:58:53,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 16:58:53,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,917 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,940 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]. [2024-06-21 16:58:53,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,960 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,982 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 16:58:53,989 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 16:58:53,990 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 16:58:53,990 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 16:58:53,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (1/1) ... [2024-06-21 16:58:53,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:58:54,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:58:54,021 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) [2024-06-21 16:58:54,039 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 [2024-06-21 16:58:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 16:58:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 16:58:54,058 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 16:58:54,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 16:58:54,058 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 16:58:54,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 16:58:54,058 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 16:58:54,058 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 16:58:54,059 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 16:58:54,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 16:58:54,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 16:58:54,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 16:58:54,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 16:58:54,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 16:58:54,061 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 16:58:54,192 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 16:58:54,194 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 16:58:54,563 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 16:58:54,563 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 16:58:54,797 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 16:58:54,797 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 16:58:54,798 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:58:54 BoogieIcfgContainer [2024-06-21 16:58:54,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 16:58:54,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 16:58:54,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 16:58:54,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 16:58:54,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 04:58:52" (1/4) ... [2024-06-21 16:58:54,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eda11db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:58:54, skipping insertion in model container [2024-06-21 16:58:54,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:58:53" (2/4) ... [2024-06-21 16:58:54,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eda11db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:58:54, skipping insertion in model container [2024-06-21 16:58:54,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:58:53" (3/4) ... [2024-06-21 16:58:54,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eda11db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:58:54, skipping insertion in model container [2024-06-21 16:58:54,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:58:54" (4/4) ... [2024-06-21 16:58:54,806 INFO L112 eAbstractionObserver]: Analyzing ICFG mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-21 16:58:54,822 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 16:58:54,823 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 16:58:54,823 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 16:58:54,879 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 16:58:54,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-21 16:58:54,951 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-21 16:58:54,951 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:58:54,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 16:58:54,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-21 16:58:54,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-21 16:58:54,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 16:58:54,982 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;@2fd42976, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 16:58:54,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 16:58:54,987 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 16:58:54,987 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 16:58:54,987 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:58:54,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:54,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 16:58:54,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:58:54,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash 398533423, now seen corresponding path program 1 times [2024-06-21 16:58:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:55,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393135478] [2024-06-21 16:58:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:58:56,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:56,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393135478] [2024-06-21 16:58:56,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393135478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:56,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:56,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 16:58:56,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749100125] [2024-06-21 16:58:56,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:56,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:58:56,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:56,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:58:56,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:58:56,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-21 16:58:56,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:58:56,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:56,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-21 16:58:56,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:58:58,050 INFO L124 PetriNetUnfolderBase]: 9587/13193 cut-off events. [2024-06-21 16:58:58,050 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-21 16:58:58,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26601 conditions, 13193 events. 9587/13193 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 69756 event pairs, 7462 based on Foata normal form. 1/13008 useless extension candidates. Maximal degree in co-relation 26588. Up to 13017 conditions per place. [2024-06-21 16:58:58,146 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 43 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-21 16:58:58,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 227 flow [2024-06-21 16:58:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:58:58,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:58:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-21 16:58:58,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6143790849673203 [2024-06-21 16:58:58,162 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 94 transitions. [2024-06-21 16:58:58,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 227 flow [2024-06-21 16:58:58,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 16:58:58,173 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-21 16:58:58,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, 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=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-21 16:58:58,178 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-21 16:58:58,179 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-21 16:58:58,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:58:58,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:58:58,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:58:58,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 16:58:58,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:58:58,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:58:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash 738555854, now seen corresponding path program 1 times [2024-06-21 16:58:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:58:58,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100514124] [2024-06-21 16:58:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:58:58,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:58:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:58:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:58:59,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:58:59,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100514124] [2024-06-21 16:58:59,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100514124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:58:59,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:58:59,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 16:58:59,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118316123] [2024-06-21 16:58:59,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:58:59,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 16:58:59,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:58:59,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 16:58:59,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 16:58:59,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-21 16:58:59,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:58:59,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:58:59,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-21 16:58:59,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:00,807 INFO L124 PetriNetUnfolderBase]: 9577/13187 cut-off events. [2024-06-21 16:59:00,807 INFO L125 PetriNetUnfolderBase]: For 2471/2471 co-relation queries the response was YES. [2024-06-21 16:59:00,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30036 conditions, 13187 events. 9577/13187 cut-off events. For 2471/2471 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 70033 event pairs, 6775 based on Foata normal form. 4/13188 useless extension candidates. Maximal degree in co-relation 30024. Up to 12982 conditions per place. [2024-06-21 16:59:00,890 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 53 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-21 16:59:00,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 319 flow [2024-06-21 16:59:00,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:59:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:59:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-21 16:59:00,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2024-06-21 16:59:00,896 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 122 transitions. [2024-06-21 16:59:00,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 319 flow [2024-06-21 16:59:00,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:59:00,899 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-21 16:59:00,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-21 16:59:00,901 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-21 16:59:00,901 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-21 16:59:00,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:00,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:00,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:00,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 16:59:00,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:00,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:00,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1420395858, now seen corresponding path program 1 times [2024-06-21 16:59:00,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:00,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903634721] [2024-06-21 16:59:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:00,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:01,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:01,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:01,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903634721] [2024-06-21 16:59:01,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903634721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:01,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:01,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:59:01,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122758201] [2024-06-21 16:59:01,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:01,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:59:01,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:01,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:59:01,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:59:01,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-21 16:59:01,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:01,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:01,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-21 16:59:01,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:03,556 INFO L124 PetriNetUnfolderBase]: 9685/13379 cut-off events. [2024-06-21 16:59:03,557 INFO L125 PetriNetUnfolderBase]: For 7314/7314 co-relation queries the response was YES. [2024-06-21 16:59:03,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33918 conditions, 13379 events. 9685/13379 cut-off events. For 7314/7314 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 71516 event pairs, 5476 based on Foata normal form. 10/13374 useless extension candidates. Maximal degree in co-relation 33904. Up to 12955 conditions per place. [2024-06-21 16:59:03,643 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 73 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-21 16:59:03,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 543 flow [2024-06-21 16:59:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:59:03,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:59:03,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-06-21 16:59:03,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2024-06-21 16:59:03,648 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 162 transitions. [2024-06-21 16:59:03,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 543 flow [2024-06-21 16:59:03,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 101 transitions, 524 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 16:59:03,655 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 310 flow [2024-06-21 16:59:03,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-06-21 16:59:03,656 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-21 16:59:03,657 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 310 flow [2024-06-21 16:59:03,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:03,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:03,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:03,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 16:59:03,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:03,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1692123393, now seen corresponding path program 1 times [2024-06-21 16:59:03,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:03,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244117126] [2024-06-21 16:59:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:03,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:04,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:04,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244117126] [2024-06-21 16:59:04,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244117126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:04,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:04,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:59:04,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915574371] [2024-06-21 16:59:04,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:04,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:59:04,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:04,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:59:04,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:59:05,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-21 16:59:05,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:05,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:05,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-21 16:59:05,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:06,732 INFO L124 PetriNetUnfolderBase]: 9731/13419 cut-off events. [2024-06-21 16:59:06,733 INFO L125 PetriNetUnfolderBase]: For 17616/17618 co-relation queries the response was YES. [2024-06-21 16:59:06,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40328 conditions, 13419 events. 9731/13419 cut-off events. For 17616/17618 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 71439 event pairs, 4552 based on Foata normal form. 10/13423 useless extension candidates. Maximal degree in co-relation 40311. Up to 12877 conditions per place. [2024-06-21 16:59:06,833 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 88 selfloop transitions, 37 changer transitions 0/132 dead transitions. [2024-06-21 16:59:06,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 132 transitions, 854 flow [2024-06-21 16:59:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:59:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:59:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-06-21 16:59:06,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2024-06-21 16:59:06,836 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 310 flow. Second operand 6 states and 196 transitions. [2024-06-21 16:59:06,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 132 transitions, 854 flow [2024-06-21 16:59:06,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 132 transitions, 842 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-21 16:59:06,851 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 548 flow [2024-06-21 16:59:06,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=70, PETRI_TRANSITIONS=80} [2024-06-21 16:59:06,853 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-21 16:59:06,853 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 548 flow [2024-06-21 16:59:06,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:06,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:06,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:06,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 16:59:06,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:06,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash -799151919, now seen corresponding path program 1 times [2024-06-21 16:59:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808937838] [2024-06-21 16:59:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:08,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:08,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808937838] [2024-06-21 16:59:08,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808937838] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:08,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:08,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:59:08,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045204305] [2024-06-21 16:59:08,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:08,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:59:08,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:08,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:59:08,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:59:08,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-21 16:59:08,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 548 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:08,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:08,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-21 16:59:08,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:09,895 INFO L124 PetriNetUnfolderBase]: 9918/13739 cut-off events. [2024-06-21 16:59:09,895 INFO L125 PetriNetUnfolderBase]: For 33358/33363 co-relation queries the response was YES. [2024-06-21 16:59:09,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47702 conditions, 13739 events. 9918/13739 cut-off events. For 33358/33363 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 73820 event pairs, 3760 based on Foata normal form. 40/13773 useless extension candidates. Maximal degree in co-relation 47679. Up to 12878 conditions per place. [2024-06-21 16:59:10,007 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 99 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2024-06-21 16:59:10,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 146 transitions, 1088 flow [2024-06-21 16:59:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:59:10,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:59:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-06-21 16:59:10,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-06-21 16:59:10,013 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 548 flow. Second operand 7 states and 224 transitions. [2024-06-21 16:59:10,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 146 transitions, 1088 flow [2024-06-21 16:59:10,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 146 transitions, 1066 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-21 16:59:10,035 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 643 flow [2024-06-21 16:59:10,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=643, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-06-21 16:59:10,039 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-21 16:59:10,039 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 643 flow [2024-06-21 16:59:10,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:10,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:10,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:10,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 16:59:10,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:10,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:10,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1120415085, now seen corresponding path program 1 times [2024-06-21 16:59:10,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:10,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359349365] [2024-06-21 16:59:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:10,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:10,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359349365] [2024-06-21 16:59:10,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359349365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:10,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:10,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:59:10,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263632593] [2024-06-21 16:59:10,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:10,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:59:10,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:10,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:59:10,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:59:10,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-21 16:59:10,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 643 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:10,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:10,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-21 16:59:10,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:12,375 INFO L124 PetriNetUnfolderBase]: 9900/13716 cut-off events. [2024-06-21 16:59:12,375 INFO L125 PetriNetUnfolderBase]: For 42287/42287 co-relation queries the response was YES. [2024-06-21 16:59:12,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50239 conditions, 13716 events. 9900/13716 cut-off events. For 42287/42287 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 73553 event pairs, 4704 based on Foata normal form. 6/13719 useless extension candidates. Maximal degree in co-relation 50212. Up to 13450 conditions per place. [2024-06-21 16:59:12,465 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 80 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-21 16:59:12,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 873 flow [2024-06-21 16:59:12,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:59:12,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:59:12,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-21 16:59:12,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2024-06-21 16:59:12,468 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 643 flow. Second operand 5 states and 123 transitions. [2024-06-21 16:59:12,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 873 flow [2024-06-21 16:59:12,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 776 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-21 16:59:12,494 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 586 flow [2024-06-21 16:59:12,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-06-21 16:59:12,497 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-21 16:59:12,497 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 586 flow [2024-06-21 16:59:12,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:12,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:12,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:12,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 16:59:12,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:12,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:12,498 INFO L85 PathProgramCache]: Analyzing trace with hash 481959056, now seen corresponding path program 1 times [2024-06-21 16:59:12,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:12,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479711505] [2024-06-21 16:59:12,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:12,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:13,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:13,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479711505] [2024-06-21 16:59:13,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479711505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:13,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:13,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:59:13,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461069542] [2024-06-21 16:59:13,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:13,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:59:13,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:59:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:59:13,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-21 16:59:13,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 586 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:13,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:13,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-21 16:59:13,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:15,027 INFO L124 PetriNetUnfolderBase]: 9926/13743 cut-off events. [2024-06-21 16:59:15,027 INFO L125 PetriNetUnfolderBase]: For 47398/47398 co-relation queries the response was YES. [2024-06-21 16:59:15,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50791 conditions, 13743 events. 9926/13743 cut-off events. For 47398/47398 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 73674 event pairs, 4443 based on Foata normal form. 12/13750 useless extension candidates. Maximal degree in co-relation 50762. Up to 13297 conditions per place. [2024-06-21 16:59:15,111 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 87 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-06-21 16:59:15,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 118 transitions, 974 flow [2024-06-21 16:59:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:59:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:59:15,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-21 16:59:15,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130718954248366 [2024-06-21 16:59:15,113 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 586 flow. Second operand 6 states and 157 transitions. [2024-06-21 16:59:15,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 118 transitions, 974 flow [2024-06-21 16:59:15,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 118 transitions, 933 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-21 16:59:15,135 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 654 flow [2024-06-21 16:59:15,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-06-21 16:59:15,136 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-21 16:59:15,136 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 654 flow [2024-06-21 16:59:15,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:15,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:15,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:15,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 16:59:15,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:15,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:15,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1317948146, now seen corresponding path program 2 times [2024-06-21 16:59:15,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:15,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926017892] [2024-06-21 16:59:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:15,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:15,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:15,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926017892] [2024-06-21 16:59:15,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926017892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:15,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:15,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:59:15,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909319376] [2024-06-21 16:59:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:15,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:59:15,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:59:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:59:16,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-21 16:59:16,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 654 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:16,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:16,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-21 16:59:16,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:17,400 INFO L124 PetriNetUnfolderBase]: 9881/13682 cut-off events. [2024-06-21 16:59:17,400 INFO L125 PetriNetUnfolderBase]: For 53938/53938 co-relation queries the response was YES. [2024-06-21 16:59:17,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51716 conditions, 13682 events. 9881/13682 cut-off events. For 53938/53938 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 73248 event pairs, 4668 based on Foata normal form. 6/13685 useless extension candidates. Maximal degree in co-relation 51687. Up to 13405 conditions per place. [2024-06-21 16:59:17,490 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 91 selfloop transitions, 14 changer transitions 0/111 dead transitions. [2024-06-21 16:59:17,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 930 flow [2024-06-21 16:59:17,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:59:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:59:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-21 16:59:17,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477124183006536 [2024-06-21 16:59:17,492 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 654 flow. Second operand 6 states and 146 transitions. [2024-06-21 16:59:17,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 930 flow [2024-06-21 16:59:17,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 111 transitions, 887 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-21 16:59:17,521 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 650 flow [2024-06-21 16:59:17,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=650, PETRI_PLACES=81, PETRI_TRANSITIONS=86} [2024-06-21 16:59:17,522 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-21 16:59:17,522 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 650 flow [2024-06-21 16:59:17,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:17,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:17,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:17,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 16:59:17,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:17,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:17,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2061758930, now seen corresponding path program 1 times [2024-06-21 16:59:17,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:17,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109007412] [2024-06-21 16:59:17,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:17,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:18,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109007412] [2024-06-21 16:59:18,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109007412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:18,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:18,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:59:18,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983127934] [2024-06-21 16:59:18,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:18,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:59:18,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:18,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:59:18,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:59:18,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 16:59:18,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 86 transitions, 650 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:18,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:18,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 16:59:18,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:20,903 INFO L124 PetriNetUnfolderBase]: 11993/16562 cut-off events. [2024-06-21 16:59:20,903 INFO L125 PetriNetUnfolderBase]: For 73191/73191 co-relation queries the response was YES. [2024-06-21 16:59:20,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62296 conditions, 16562 events. 11993/16562 cut-off events. For 73191/73191 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 89092 event pairs, 5700 based on Foata normal form. 6/16565 useless extension candidates. Maximal degree in co-relation 62266. Up to 16196 conditions per place. [2024-06-21 16:59:21,012 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 100 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-06-21 16:59:21,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 125 transitions, 1043 flow [2024-06-21 16:59:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:59:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:59:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-21 16:59:21,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4565826330532213 [2024-06-21 16:59:21,015 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 650 flow. Second operand 7 states and 163 transitions. [2024-06-21 16:59:21,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 125 transitions, 1043 flow [2024-06-21 16:59:21,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 125 transitions, 973 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 16:59:21,057 INFO L231 Difference]: Finished difference. Result has 83 places, 93 transitions, 714 flow [2024-06-21 16:59:21,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=714, PETRI_PLACES=83, PETRI_TRANSITIONS=93} [2024-06-21 16:59:21,057 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-21 16:59:21,058 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 93 transitions, 714 flow [2024-06-21 16:59:21,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:21,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:21,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:21,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 16:59:21,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:21,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:21,058 INFO L85 PathProgramCache]: Analyzing trace with hash 908405587, now seen corresponding path program 1 times [2024-06-21 16:59:21,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:21,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603868585] [2024-06-21 16:59:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:21,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:21,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:21,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:21,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603868585] [2024-06-21 16:59:21,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603868585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:21,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:21,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:59:21,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142041531] [2024-06-21 16:59:21,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:21,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:59:21,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:59:21,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:59:21,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 16:59:21,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 93 transitions, 714 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:21,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:21,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 16:59:21,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:23,339 INFO L124 PetriNetUnfolderBase]: 11979/16468 cut-off events. [2024-06-21 16:59:23,339 INFO L125 PetriNetUnfolderBase]: For 87546/87546 co-relation queries the response was YES. [2024-06-21 16:59:23,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65761 conditions, 16468 events. 11979/16468 cut-off events. For 87546/87546 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 87185 event pairs, 5767 based on Foata normal form. 4/16469 useless extension candidates. Maximal degree in co-relation 65730. Up to 16235 conditions per place. [2024-06-21 16:59:23,463 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 97 selfloop transitions, 10 changer transitions 0/112 dead transitions. [2024-06-21 16:59:23,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 112 transitions, 1004 flow [2024-06-21 16:59:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 16:59:23,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 16:59:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-21 16:59:23,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-06-21 16:59:23,464 INFO L175 Difference]: Start difference. First operand has 83 places, 93 transitions, 714 flow. Second operand 5 states and 115 transitions. [2024-06-21 16:59:23,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 112 transitions, 1004 flow [2024-06-21 16:59:23,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 112 transitions, 944 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-21 16:59:23,523 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 729 flow [2024-06-21 16:59:23,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=729, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2024-06-21 16:59:23,524 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2024-06-21 16:59:23,524 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 729 flow [2024-06-21 16:59:23,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:23,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:23,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:23,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 16:59:23,525 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:23,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash -697568913, now seen corresponding path program 1 times [2024-06-21 16:59:23,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:23,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242308864] [2024-06-21 16:59:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:23,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:24,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:24,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:24,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242308864] [2024-06-21 16:59:24,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242308864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:24,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:24,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 16:59:24,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855151056] [2024-06-21 16:59:24,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:24,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 16:59:24,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:24,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 16:59:24,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 16:59:24,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-21 16:59:24,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 729 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:24,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:24,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-21 16:59:24,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:26,508 INFO L124 PetriNetUnfolderBase]: 11754/16206 cut-off events. [2024-06-21 16:59:26,508 INFO L125 PetriNetUnfolderBase]: For 103534/103534 co-relation queries the response was YES. [2024-06-21 16:59:26,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68147 conditions, 16206 events. 11754/16206 cut-off events. For 103534/103534 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 87935 event pairs, 4688 based on Foata normal form. 6/16205 useless extension candidates. Maximal degree in co-relation 68115. Up to 15591 conditions per place. [2024-06-21 16:59:26,635 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 109 selfloop transitions, 37 changer transitions 0/153 dead transitions. [2024-06-21 16:59:26,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 153 transitions, 1215 flow [2024-06-21 16:59:26,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:59:26,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:59:26,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-21 16:59:26,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049019607843137 [2024-06-21 16:59:26,636 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 729 flow. Second operand 8 states and 206 transitions. [2024-06-21 16:59:26,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 153 transitions, 1215 flow [2024-06-21 16:59:26,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 153 transitions, 1170 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-21 16:59:26,706 INFO L231 Difference]: Finished difference. Result has 90 places, 105 transitions, 856 flow [2024-06-21 16:59:26,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=856, PETRI_PLACES=90, PETRI_TRANSITIONS=105} [2024-06-21 16:59:26,707 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-21 16:59:26,707 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 105 transitions, 856 flow [2024-06-21 16:59:26,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:26,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:26,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:26,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 16:59:26,708 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:26,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:26,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1775091077, now seen corresponding path program 1 times [2024-06-21 16:59:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:26,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034695419] [2024-06-21 16:59:26,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:26,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:27,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:27,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034695419] [2024-06-21 16:59:27,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034695419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:27,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:27,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:59:27,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600779167] [2024-06-21 16:59:27,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:27,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:59:27,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:27,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:59:27,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:59:28,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 16:59:28,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 105 transitions, 856 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:28,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:28,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 16:59:28,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:29,806 INFO L124 PetriNetUnfolderBase]: 12009/16495 cut-off events. [2024-06-21 16:59:29,806 INFO L125 PetriNetUnfolderBase]: For 124288/124288 co-relation queries the response was YES. [2024-06-21 16:59:29,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73566 conditions, 16495 events. 12009/16495 cut-off events. For 124288/124288 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 87368 event pairs, 5622 based on Foata normal form. 3/16495 useless extension candidates. Maximal degree in co-relation 73532. Up to 16205 conditions per place. [2024-06-21 16:59:29,934 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 111 selfloop transitions, 25 changer transitions 0/141 dead transitions. [2024-06-21 16:59:29,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 141 transitions, 1256 flow [2024-06-21 16:59:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:59:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:59:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-21 16:59:29,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45938375350140054 [2024-06-21 16:59:29,936 INFO L175 Difference]: Start difference. First operand has 90 places, 105 transitions, 856 flow. Second operand 7 states and 164 transitions. [2024-06-21 16:59:29,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 141 transitions, 1256 flow [2024-06-21 16:59:30,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 141 transitions, 1152 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-21 16:59:30,009 INFO L231 Difference]: Finished difference. Result has 92 places, 109 transitions, 870 flow [2024-06-21 16:59:30,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=870, PETRI_PLACES=92, PETRI_TRANSITIONS=109} [2024-06-21 16:59:30,010 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-21 16:59:30,010 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 109 transitions, 870 flow [2024-06-21 16:59:30,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:30,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:30,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:30,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 16:59:30,011 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:30,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:30,011 INFO L85 PathProgramCache]: Analyzing trace with hash -127729505, now seen corresponding path program 1 times [2024-06-21 16:59:30,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:30,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922782343] [2024-06-21 16:59:30,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:30,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:31,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:31,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922782343] [2024-06-21 16:59:31,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922782343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:31,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:31,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:59:31,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941284584] [2024-06-21 16:59:31,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:31,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:59:31,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:31,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:59:31,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:59:31,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-21 16:59:31,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 109 transitions, 870 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:31,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:31,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-21 16:59:31,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:33,179 INFO L124 PetriNetUnfolderBase]: 12026/16666 cut-off events. [2024-06-21 16:59:33,180 INFO L125 PetriNetUnfolderBase]: For 143255/143261 co-relation queries the response was YES. [2024-06-21 16:59:33,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75352 conditions, 16666 events. 12026/16666 cut-off events. For 143255/143261 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 91719 event pairs, 3528 based on Foata normal form. 28/16686 useless extension candidates. Maximal degree in co-relation 75317. Up to 15160 conditions per place. [2024-06-21 16:59:33,523 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 110 selfloop transitions, 57 changer transitions 0/174 dead transitions. [2024-06-21 16:59:33,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 174 transitions, 1584 flow [2024-06-21 16:59:33,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:59:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:59:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-21 16:59:33,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-06-21 16:59:33,525 INFO L175 Difference]: Start difference. First operand has 92 places, 109 transitions, 870 flow. Second operand 8 states and 216 transitions. [2024-06-21 16:59:33,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 174 transitions, 1584 flow [2024-06-21 16:59:33,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 174 transitions, 1513 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 16:59:33,590 INFO L231 Difference]: Finished difference. Result has 94 places, 113 transitions, 994 flow [2024-06-21 16:59:33,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=994, PETRI_PLACES=94, PETRI_TRANSITIONS=113} [2024-06-21 16:59:33,591 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-21 16:59:33,591 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 113 transitions, 994 flow [2024-06-21 16:59:33,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:33,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:33,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:33,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 16:59:33,592 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:33,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:33,593 INFO L85 PathProgramCache]: Analyzing trace with hash -14165345, now seen corresponding path program 2 times [2024-06-21 16:59:33,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:33,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177933548] [2024-06-21 16:59:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:33,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:34,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:34,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177933548] [2024-06-21 16:59:34,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177933548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:34,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:34,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:59:34,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219606893] [2024-06-21 16:59:34,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:34,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:59:34,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:34,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:59:34,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:59:35,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-21 16:59:35,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 113 transitions, 994 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:35,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:35,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-21 16:59:35,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:37,114 INFO L124 PetriNetUnfolderBase]: 12121/16821 cut-off events. [2024-06-21 16:59:37,114 INFO L125 PetriNetUnfolderBase]: For 168996/168996 co-relation queries the response was YES. [2024-06-21 16:59:37,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78624 conditions, 16821 events. 12121/16821 cut-off events. For 168996/168996 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 92910 event pairs, 4512 based on Foata normal form. 60/16874 useless extension candidates. Maximal degree in co-relation 78588. Up to 15756 conditions per place. [2024-06-21 16:59:37,242 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 125 selfloop transitions, 45 changer transitions 0/177 dead transitions. [2024-06-21 16:59:37,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 177 transitions, 1554 flow [2024-06-21 16:59:37,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 16:59:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 16:59:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-21 16:59:37,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-21 16:59:37,244 INFO L175 Difference]: Start difference. First operand has 94 places, 113 transitions, 994 flow. Second operand 9 states and 234 transitions. [2024-06-21 16:59:37,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 177 transitions, 1554 flow [2024-06-21 16:59:37,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 177 transitions, 1464 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-21 16:59:37,355 INFO L231 Difference]: Finished difference. Result has 99 places, 116 transitions, 1058 flow [2024-06-21 16:59:37,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1058, PETRI_PLACES=99, PETRI_TRANSITIONS=116} [2024-06-21 16:59:37,356 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-21 16:59:37,356 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 116 transitions, 1058 flow [2024-06-21 16:59:37,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:37,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:37,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:37,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 16:59:37,357 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:37,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:37,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1088019314, now seen corresponding path program 1 times [2024-06-21 16:59:37,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:37,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282810547] [2024-06-21 16:59:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:37,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:38,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:38,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:38,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282810547] [2024-06-21 16:59:38,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282810547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:38,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:38,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:59:38,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526309413] [2024-06-21 16:59:38,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:38,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:59:38,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:38,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:59:38,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:59:38,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 16:59:38,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 116 transitions, 1058 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:38,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:38,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 16:59:38,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:40,216 INFO L124 PetriNetUnfolderBase]: 12439/17201 cut-off events. [2024-06-21 16:59:40,216 INFO L125 PetriNetUnfolderBase]: For 188747/188747 co-relation queries the response was YES. [2024-06-21 16:59:40,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83425 conditions, 17201 events. 12439/17201 cut-off events. For 188747/188747 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 92843 event pairs, 5418 based on Foata normal form. 4/17201 useless extension candidates. Maximal degree in co-relation 83387. Up to 16860 conditions per place. [2024-06-21 16:59:40,573 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 130 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2024-06-21 16:59:40,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 156 transitions, 1596 flow [2024-06-21 16:59:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:59:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:59:40,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-21 16:59:40,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738562091503268 [2024-06-21 16:59:40,574 INFO L175 Difference]: Start difference. First operand has 99 places, 116 transitions, 1058 flow. Second operand 6 states and 145 transitions. [2024-06-21 16:59:40,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 156 transitions, 1596 flow [2024-06-21 16:59:40,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 156 transitions, 1488 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 16:59:40,712 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 1135 flow [2024-06-21 16:59:40,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1135, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2024-06-21 16:59:40,713 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-21 16:59:40,713 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 1135 flow [2024-06-21 16:59:40,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:40,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:40,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:40,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 16:59:40,714 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:40,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:40,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1606826769, now seen corresponding path program 1 times [2024-06-21 16:59:40,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:40,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154265856] [2024-06-21 16:59:40,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:40,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:42,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:42,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154265856] [2024-06-21 16:59:42,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154265856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:42,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:42,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:59:42,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870147732] [2024-06-21 16:59:42,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:42,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:59:42,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:42,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:59:42,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:59:42,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 16:59:42,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 1135 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:42,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:42,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 16:59:42,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:44,155 INFO L124 PetriNetUnfolderBase]: 12475/17256 cut-off events. [2024-06-21 16:59:44,155 INFO L125 PetriNetUnfolderBase]: For 214484/214484 co-relation queries the response was YES. [2024-06-21 16:59:44,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87442 conditions, 17256 events. 12475/17256 cut-off events. For 214484/214484 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 93252 event pairs, 5429 based on Foata normal form. 6/17259 useless extension candidates. Maximal degree in co-relation 87402. Up to 16849 conditions per place. [2024-06-21 16:59:44,303 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 143 selfloop transitions, 28 changer transitions 0/176 dead transitions. [2024-06-21 16:59:44,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 176 transitions, 1677 flow [2024-06-21 16:59:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:59:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:59:44,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-21 16:59:44,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2024-06-21 16:59:44,304 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 1135 flow. Second operand 8 states and 188 transitions. [2024-06-21 16:59:44,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 176 transitions, 1677 flow [2024-06-21 16:59:44,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 176 transitions, 1635 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-21 16:59:44,449 INFO L231 Difference]: Finished difference. Result has 107 places, 135 transitions, 1269 flow [2024-06-21 16:59:44,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1269, PETRI_PLACES=107, PETRI_TRANSITIONS=135} [2024-06-21 16:59:44,450 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-21 16:59:44,450 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 135 transitions, 1269 flow [2024-06-21 16:59:44,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:44,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:44,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:44,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 16:59:44,451 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:44,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:44,451 INFO L85 PathProgramCache]: Analyzing trace with hash 162498567, now seen corresponding path program 2 times [2024-06-21 16:59:44,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:44,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648519604] [2024-06-21 16:59:44,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:44,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:45,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:45,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648519604] [2024-06-21 16:59:45,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648519604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:45,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:45,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:59:45,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404002766] [2024-06-21 16:59:45,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:45,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:59:45,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:45,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:59:45,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:59:45,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 16:59:45,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 135 transitions, 1269 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:45,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:45,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 16:59:45,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:47,771 INFO L124 PetriNetUnfolderBase]: 12511/17308 cut-off events. [2024-06-21 16:59:47,771 INFO L125 PetriNetUnfolderBase]: For 245386/245386 co-relation queries the response was YES. [2024-06-21 16:59:47,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91556 conditions, 17308 events. 12511/17308 cut-off events. For 245386/245386 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 93581 event pairs, 5437 based on Foata normal form. 6/17311 useless extension candidates. Maximal degree in co-relation 91512. Up to 16946 conditions per place. [2024-06-21 16:59:47,921 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 152 selfloop transitions, 21 changer transitions 0/178 dead transitions. [2024-06-21 16:59:47,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 178 transitions, 1779 flow [2024-06-21 16:59:47,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:59:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:59:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-21 16:59:47,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-06-21 16:59:47,924 INFO L175 Difference]: Start difference. First operand has 107 places, 135 transitions, 1269 flow. Second operand 8 states and 185 transitions. [2024-06-21 16:59:47,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 178 transitions, 1779 flow [2024-06-21 16:59:48,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 178 transitions, 1671 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-21 16:59:48,113 INFO L231 Difference]: Finished difference. Result has 110 places, 138 transitions, 1279 flow [2024-06-21 16:59:48,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1279, PETRI_PLACES=110, PETRI_TRANSITIONS=138} [2024-06-21 16:59:48,114 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2024-06-21 16:59:48,114 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 138 transitions, 1279 flow [2024-06-21 16:59:48,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:48,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:48,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:48,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 16:59:48,115 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:48,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1370354739, now seen corresponding path program 3 times [2024-06-21 16:59:48,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:48,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526537203] [2024-06-21 16:59:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:48,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:49,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:49,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526537203] [2024-06-21 16:59:49,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526537203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:49,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:49,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:59:49,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567851928] [2024-06-21 16:59:49,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:49,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:59:49,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:49,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:59:49,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:59:49,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 16:59:49,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 138 transitions, 1279 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:49,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:49,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 16:59:49,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:51,372 INFO L124 PetriNetUnfolderBase]: 12547/17360 cut-off events. [2024-06-21 16:59:51,372 INFO L125 PetriNetUnfolderBase]: For 276141/276141 co-relation queries the response was YES. [2024-06-21 16:59:51,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94591 conditions, 17360 events. 12547/17360 cut-off events. For 276141/276141 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 93757 event pairs, 5326 based on Foata normal form. 6/17363 useless extension candidates. Maximal degree in co-relation 94546. Up to 16975 conditions per place. [2024-06-21 16:59:51,505 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 153 selfloop transitions, 23 changer transitions 0/181 dead transitions. [2024-06-21 16:59:51,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 181 transitions, 1799 flow [2024-06-21 16:59:51,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:59:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:59:51,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-21 16:59:51,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-06-21 16:59:51,507 INFO L175 Difference]: Start difference. First operand has 110 places, 138 transitions, 1279 flow. Second operand 8 states and 185 transitions. [2024-06-21 16:59:51,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 181 transitions, 1799 flow [2024-06-21 16:59:51,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 181 transitions, 1709 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-21 16:59:51,658 INFO L231 Difference]: Finished difference. Result has 113 places, 141 transitions, 1317 flow [2024-06-21 16:59:51,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1317, PETRI_PLACES=113, PETRI_TRANSITIONS=141} [2024-06-21 16:59:51,659 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2024-06-21 16:59:51,659 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 141 transitions, 1317 flow [2024-06-21 16:59:51,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:51,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:51,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:51,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 16:59:51,660 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:51,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:51,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1370651657, now seen corresponding path program 1 times [2024-06-21 16:59:51,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:51,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741984924] [2024-06-21 16:59:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:51,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:52,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:52,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741984924] [2024-06-21 16:59:52,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741984924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:52,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:52,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:59:52,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468863653] [2024-06-21 16:59:52,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:52,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:59:52,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:52,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:59:52,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:59:52,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 16:59:52,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 141 transitions, 1317 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:52,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:52,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 16:59:52,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:54,885 INFO L124 PetriNetUnfolderBase]: 12502/17289 cut-off events. [2024-06-21 16:59:54,885 INFO L125 PetriNetUnfolderBase]: For 307556/307566 co-relation queries the response was YES. [2024-06-21 16:59:54,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96927 conditions, 17289 events. 12502/17289 cut-off events. For 307556/307566 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 93374 event pairs, 4976 based on Foata normal form. 7/17292 useless extension candidates. Maximal degree in co-relation 96881. Up to 16630 conditions per place. [2024-06-21 16:59:54,999 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 123 selfloop transitions, 47 changer transitions 0/175 dead transitions. [2024-06-21 16:59:54,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 175 transitions, 1755 flow [2024-06-21 16:59:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:59:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:59:55,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-21 16:59:55,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-21 16:59:55,005 INFO L175 Difference]: Start difference. First operand has 113 places, 141 transitions, 1317 flow. Second operand 6 states and 156 transitions. [2024-06-21 16:59:55,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 175 transitions, 1755 flow [2024-06-21 16:59:55,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 175 transitions, 1645 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-21 16:59:55,159 INFO L231 Difference]: Finished difference. Result has 113 places, 141 transitions, 1322 flow [2024-06-21 16:59:55,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1322, PETRI_PLACES=113, PETRI_TRANSITIONS=141} [2024-06-21 16:59:55,160 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2024-06-21 16:59:55,160 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 141 transitions, 1322 flow [2024-06-21 16:59:55,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:55,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:55,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:55,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 16:59:55,161 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:55,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:55,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1359719603, now seen corresponding path program 4 times [2024-06-21 16:59:55,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:55,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887044688] [2024-06-21 16:59:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:55,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:56,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:56,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887044688] [2024-06-21 16:59:56,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887044688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:56,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:56,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 16:59:56,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342247723] [2024-06-21 16:59:56,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:56,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 16:59:56,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:56,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 16:59:56,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 16:59:56,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 16:59:56,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 141 transitions, 1322 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:56,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:56,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 16:59:56,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:59:58,499 INFO L124 PetriNetUnfolderBase]: 12487/17264 cut-off events. [2024-06-21 16:59:58,499 INFO L125 PetriNetUnfolderBase]: For 328496/328496 co-relation queries the response was YES. [2024-06-21 16:59:58,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97980 conditions, 17264 events. 12487/17264 cut-off events. For 328496/328496 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 93085 event pairs, 5428 based on Foata normal form. 6/17267 useless extension candidates. Maximal degree in co-relation 97933. Up to 16842 conditions per place. [2024-06-21 16:59:58,665 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 148 selfloop transitions, 31 changer transitions 0/184 dead transitions. [2024-06-21 16:59:58,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 184 transitions, 1856 flow [2024-06-21 16:59:58,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 16:59:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 16:59:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-21 16:59:58,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2024-06-21 16:59:58,669 INFO L175 Difference]: Start difference. First operand has 113 places, 141 transitions, 1322 flow. Second operand 8 states and 186 transitions. [2024-06-21 16:59:58,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 184 transitions, 1856 flow [2024-06-21 16:59:58,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 184 transitions, 1762 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-21 16:59:58,852 INFO L231 Difference]: Finished difference. Result has 116 places, 144 transitions, 1382 flow [2024-06-21 16:59:58,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1382, PETRI_PLACES=116, PETRI_TRANSITIONS=144} [2024-06-21 16:59:58,853 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2024-06-21 16:59:58,853 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 144 transitions, 1382 flow [2024-06-21 16:59:58,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:58,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:59:58,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:59:58,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 16:59:58,853 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 16:59:58,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:59:58,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1088347604, now seen corresponding path program 2 times [2024-06-21 16:59:58,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:59:58,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562922748] [2024-06-21 16:59:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:59:58,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:59:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:59:59,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:59:59,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:59:59,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562922748] [2024-06-21 16:59:59,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562922748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:59:59,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:59:59,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:59:59,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130454737] [2024-06-21 16:59:59,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:59:59,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:59:59,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:59:59,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:59:59,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:59:59,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 16:59:59,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 144 transitions, 1382 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:59:59,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:59:59,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 16:59:59,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:00:01,527 INFO L124 PetriNetUnfolderBase]: 12473/17246 cut-off events. [2024-06-21 17:00:01,527 INFO L125 PetriNetUnfolderBase]: For 363283/363283 co-relation queries the response was YES. [2024-06-21 17:00:01,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100514 conditions, 17246 events. 12473/17246 cut-off events. For 363283/363283 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 92908 event pairs, 5426 based on Foata normal form. 4/17247 useless extension candidates. Maximal degree in co-relation 100466. Up to 16947 conditions per place. [2024-06-21 17:00:01,693 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 144 selfloop transitions, 14 changer transitions 0/163 dead transitions. [2024-06-21 17:00:01,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 163 transitions, 1748 flow [2024-06-21 17:00:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 17:00:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 17:00:01,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-21 17:00:01,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2024-06-21 17:00:01,694 INFO L175 Difference]: Start difference. First operand has 116 places, 144 transitions, 1382 flow. Second operand 6 states and 134 transitions. [2024-06-21 17:00:01,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 163 transitions, 1748 flow [2024-06-21 17:00:01,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 163 transitions, 1596 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-21 17:00:01,929 INFO L231 Difference]: Finished difference. Result has 116 places, 144 transitions, 1267 flow [2024-06-21 17:00:01,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1267, PETRI_PLACES=116, PETRI_TRANSITIONS=144} [2024-06-21 17:00:01,930 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 62 predicate places. [2024-06-21 17:00:01,930 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 144 transitions, 1267 flow [2024-06-21 17:00:01,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:01,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:00:01,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:00:01,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 17:00:01,930 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 17:00:01,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:00:01,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1093739186, now seen corresponding path program 1 times [2024-06-21 17:00:01,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:00:01,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817611627] [2024-06-21 17:00:01,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:00:01,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:00:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:00:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:00:02,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:00:02,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817611627] [2024-06-21 17:00:02,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817611627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:00:02,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:00:02,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 17:00:02,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575343283] [2024-06-21 17:00:02,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:00:02,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 17:00:02,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:00:02,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 17:00:02,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 17:00:02,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 17:00:02,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 144 transitions, 1267 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:02,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:00:02,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 17:00:02,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:00:04,876 INFO L124 PetriNetUnfolderBase]: 12505/17286 cut-off events. [2024-06-21 17:00:04,876 INFO L125 PetriNetUnfolderBase]: For 348589/348589 co-relation queries the response was YES. [2024-06-21 17:00:04,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98642 conditions, 17286 events. 12505/17286 cut-off events. For 348589/348589 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 93278 event pairs, 5422 based on Foata normal form. 4/17286 useless extension candidates. Maximal degree in co-relation 98593. Up to 16936 conditions per place. [2024-06-21 17:00:05,009 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 148 selfloop transitions, 24 changer transitions 0/177 dead transitions. [2024-06-21 17:00:05,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 177 transitions, 1865 flow [2024-06-21 17:00:05,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 17:00:05,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 17:00:05,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-21 17:00:05,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673202614379085 [2024-06-21 17:00:05,010 INFO L175 Difference]: Start difference. First operand has 116 places, 144 transitions, 1267 flow. Second operand 6 states and 143 transitions. [2024-06-21 17:00:05,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 177 transitions, 1865 flow [2024-06-21 17:00:05,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 177 transitions, 1815 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-21 17:00:05,176 INFO L231 Difference]: Finished difference. Result has 117 places, 152 transitions, 1390 flow [2024-06-21 17:00:05,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1390, PETRI_PLACES=117, PETRI_TRANSITIONS=152} [2024-06-21 17:00:05,177 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-21 17:00:05,177 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 152 transitions, 1390 flow [2024-06-21 17:00:05,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:05,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:00:05,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:00:05,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 17:00:05,178 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 17:00:05,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:00:05,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1736053100, now seen corresponding path program 2 times [2024-06-21 17:00:05,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:00:05,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990415964] [2024-06-21 17:00:05,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:00:05,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:00:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:00:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:00:05,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:00:05,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990415964] [2024-06-21 17:00:05,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990415964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:00:05,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:00:05,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 17:00:05,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75844740] [2024-06-21 17:00:05,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:00:05,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 17:00:05,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:00:05,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 17:00:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 17:00:05,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 17:00:05,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 152 transitions, 1390 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:05,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:00:05,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 17:00:05,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:00:08,406 INFO L124 PetriNetUnfolderBase]: 12491/17272 cut-off events. [2024-06-21 17:00:08,406 INFO L125 PetriNetUnfolderBase]: For 381759/381764 co-relation queries the response was YES. [2024-06-21 17:00:08,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102199 conditions, 17272 events. 12491/17272 cut-off events. For 381759/381764 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 93238 event pairs, 5419 based on Foata normal form. 8/17276 useless extension candidates. Maximal degree in co-relation 102150. Up to 16924 conditions per place. [2024-06-21 17:00:08,559 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 143 selfloop transitions, 24 changer transitions 0/172 dead transitions. [2024-06-21 17:00:08,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 172 transitions, 1778 flow [2024-06-21 17:00:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 17:00:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 17:00:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-21 17:00:08,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4477124183006536 [2024-06-21 17:00:08,560 INFO L175 Difference]: Start difference. First operand has 117 places, 152 transitions, 1390 flow. Second operand 6 states and 137 transitions. [2024-06-21 17:00:08,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 172 transitions, 1778 flow [2024-06-21 17:00:08,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 172 transitions, 1683 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-21 17:00:08,777 INFO L231 Difference]: Finished difference. Result has 121 places, 152 transitions, 1353 flow [2024-06-21 17:00:08,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1295, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1353, PETRI_PLACES=121, PETRI_TRANSITIONS=152} [2024-06-21 17:00:08,778 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-06-21 17:00:08,778 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 152 transitions, 1353 flow [2024-06-21 17:00:08,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:08,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:00:08,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:00:08,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 17:00:08,779 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 17:00:08,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:00:08,779 INFO L85 PathProgramCache]: Analyzing trace with hash -288849990, now seen corresponding path program 1 times [2024-06-21 17:00:08,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:00:08,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733185212] [2024-06-21 17:00:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:00:08,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:00:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:00:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:00:09,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:00:09,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733185212] [2024-06-21 17:00:09,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733185212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:00:09,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:00:09,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:00:09,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545416999] [2024-06-21 17:00:09,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:00:09,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:00:09,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:00:09,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:00:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:00:09,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 17:00:09,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 152 transitions, 1353 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:09,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:00:09,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 17:00:09,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:00:11,846 INFO L124 PetriNetUnfolderBase]: 12670/17485 cut-off events. [2024-06-21 17:00:11,846 INFO L125 PetriNetUnfolderBase]: For 410153/410158 co-relation queries the response was YES. [2024-06-21 17:00:11,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104131 conditions, 17485 events. 12670/17485 cut-off events. For 410153/410158 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 93994 event pairs, 5004 based on Foata normal form. 12/17491 useless extension candidates. Maximal degree in co-relation 104080. Up to 16829 conditions per place. [2024-06-21 17:00:12,001 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 167 selfloop transitions, 50 changer transitions 0/222 dead transitions. [2024-06-21 17:00:12,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 222 transitions, 2404 flow [2024-06-21 17:00:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:00:12,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:00:12,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-21 17:00:12,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014005602240896 [2024-06-21 17:00:12,002 INFO L175 Difference]: Start difference. First operand has 121 places, 152 transitions, 1353 flow. Second operand 7 states and 179 transitions. [2024-06-21 17:00:12,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 222 transitions, 2404 flow [2024-06-21 17:00:12,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 222 transitions, 2310 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 17:00:12,325 INFO L231 Difference]: Finished difference. Result has 125 places, 180 transitions, 1789 flow [2024-06-21 17:00:12,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1789, PETRI_PLACES=125, PETRI_TRANSITIONS=180} [2024-06-21 17:00:12,325 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-21 17:00:12,325 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 180 transitions, 1789 flow [2024-06-21 17:00:12,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:12,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:00:12,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:00:12,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 17:00:12,326 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 17:00:12,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:00:12,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1355403823, now seen corresponding path program 1 times [2024-06-21 17:00:12,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:00:12,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264958350] [2024-06-21 17:00:12,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:00:12,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:00:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:00:13,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:00:13,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:00:13,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264958350] [2024-06-21 17:00:13,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264958350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:00:13,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:00:13,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:00:13,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095595669] [2024-06-21 17:00:13,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:00:13,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:00:13,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:00:13,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:00:13,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:00:13,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 17:00:13,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 180 transitions, 1789 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:13,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:00:13,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 17:00:13,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:00:16,639 INFO L124 PetriNetUnfolderBase]: 12750/17624 cut-off events. [2024-06-21 17:00:16,639 INFO L125 PetriNetUnfolderBase]: For 457870/457875 co-relation queries the response was YES. [2024-06-21 17:00:16,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111400 conditions, 17624 events. 12750/17624 cut-off events. For 457870/457875 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 94984 event pairs, 4966 based on Foata normal form. 8/17628 useless extension candidates. Maximal degree in co-relation 111346. Up to 16954 conditions per place. [2024-06-21 17:00:16,796 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 182 selfloop transitions, 50 changer transitions 0/237 dead transitions. [2024-06-21 17:00:16,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 237 transitions, 2515 flow [2024-06-21 17:00:16,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:00:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:00:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-21 17:00:16,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-06-21 17:00:16,797 INFO L175 Difference]: Start difference. First operand has 125 places, 180 transitions, 1789 flow. Second operand 8 states and 200 transitions. [2024-06-21 17:00:16,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 237 transitions, 2515 flow [2024-06-21 17:00:17,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 237 transitions, 2427 flow, removed 43 selfloop flow, removed 1 redundant places. [2024-06-21 17:00:17,121 INFO L231 Difference]: Finished difference. Result has 133 places, 188 transitions, 1961 flow [2024-06-21 17:00:17,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1961, PETRI_PLACES=133, PETRI_TRANSITIONS=188} [2024-06-21 17:00:17,122 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2024-06-21 17:00:17,122 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 188 transitions, 1961 flow [2024-06-21 17:00:17,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:17,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:00:17,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:00:17,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 17:00:17,123 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 17:00:17,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:00:17,123 INFO L85 PathProgramCache]: Analyzing trace with hash -977300825, now seen corresponding path program 2 times [2024-06-21 17:00:17,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:00:17,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606491546] [2024-06-21 17:00:17,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:00:17,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:00:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:00:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:00:18,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:00:18,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606491546] [2024-06-21 17:00:18,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606491546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:00:18,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:00:18,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:00:18,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140922299] [2024-06-21 17:00:18,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:00:18,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:00:18,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:00:18,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:00:18,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:00:18,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 17:00:18,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 188 transitions, 1961 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:18,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:00:18,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 17:00:18,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:00:21,749 INFO L124 PetriNetUnfolderBase]: 12830/17736 cut-off events. [2024-06-21 17:00:21,749 INFO L125 PetriNetUnfolderBase]: For 498729/498734 co-relation queries the response was YES. [2024-06-21 17:00:21,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115213 conditions, 17736 events. 12830/17736 cut-off events. For 498729/498734 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 95658 event pairs, 4990 based on Foata normal form. 8/17740 useless extension candidates. Maximal degree in co-relation 115155. Up to 17044 conditions per place. [2024-06-21 17:00:21,906 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 185 selfloop transitions, 52 changer transitions 0/242 dead transitions. [2024-06-21 17:00:21,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 242 transitions, 2707 flow [2024-06-21 17:00:21,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:00:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:00:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-21 17:00:21,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2024-06-21 17:00:21,907 INFO L175 Difference]: Start difference. First operand has 133 places, 188 transitions, 1961 flow. Second operand 8 states and 196 transitions. [2024-06-21 17:00:21,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 242 transitions, 2707 flow [2024-06-21 17:00:22,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 242 transitions, 2535 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-21 17:00:22,269 INFO L231 Difference]: Finished difference. Result has 137 places, 197 transitions, 2086 flow [2024-06-21 17:00:22,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2086, PETRI_PLACES=137, PETRI_TRANSITIONS=197} [2024-06-21 17:00:22,269 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-21 17:00:22,269 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 197 transitions, 2086 flow [2024-06-21 17:00:22,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:22,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:00:22,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:00:22,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 17:00:22,270 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 17:00:22,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:00:22,270 INFO L85 PathProgramCache]: Analyzing trace with hash -977293385, now seen corresponding path program 3 times [2024-06-21 17:00:22,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:00:22,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907733444] [2024-06-21 17:00:22,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:00:22,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:00:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:00:23,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:00:23,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:00:23,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907733444] [2024-06-21 17:00:23,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907733444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:00:23,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:00:23,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:00:23,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430622304] [2024-06-21 17:00:23,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:00:23,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:00:23,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:00:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:00:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:00:23,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 17:00:23,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 197 transitions, 2086 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:23,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:00:23,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 17:00:23,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:00:26,527 INFO L124 PetriNetUnfolderBase]: 12866/17778 cut-off events. [2024-06-21 17:00:26,527 INFO L125 PetriNetUnfolderBase]: For 542551/542556 co-relation queries the response was YES. [2024-06-21 17:00:26,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118437 conditions, 17778 events. 12866/17778 cut-off events. For 542551/542556 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 95848 event pairs, 4968 based on Foata normal form. 8/17782 useless extension candidates. Maximal degree in co-relation 118377. Up to 16922 conditions per place. [2024-06-21 17:00:26,702 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 180 selfloop transitions, 63 changer transitions 0/248 dead transitions. [2024-06-21 17:00:26,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 248 transitions, 2806 flow [2024-06-21 17:00:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 17:00:26,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 17:00:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-21 17:00:26,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2024-06-21 17:00:26,704 INFO L175 Difference]: Start difference. First operand has 137 places, 197 transitions, 2086 flow. Second operand 8 states and 196 transitions. [2024-06-21 17:00:26,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 248 transitions, 2806 flow [2024-06-21 17:00:27,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 248 transitions, 2671 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-21 17:00:27,281 INFO L231 Difference]: Finished difference. Result has 143 places, 203 transitions, 2231 flow [2024-06-21 17:00:27,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2231, PETRI_PLACES=143, PETRI_TRANSITIONS=203} [2024-06-21 17:00:27,282 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-06-21 17:00:27,282 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 203 transitions, 2231 flow [2024-06-21 17:00:27,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:27,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:00:27,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:00:27,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 17:00:27,282 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 17:00:27,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:00:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash -631138350, now seen corresponding path program 2 times [2024-06-21 17:00:27,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:00:27,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543217450] [2024-06-21 17:00:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:00:27,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:00:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:00:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:00:28,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:00:28,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543217450] [2024-06-21 17:00:28,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543217450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:00:28,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:00:28,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 17:00:28,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699664463] [2024-06-21 17:00:28,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:00:28,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 17:00:28,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:00:28,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 17:00:28,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 17:00:28,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 17:00:28,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 203 transitions, 2231 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:28,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:00:28,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 17:00:28,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 17:00:31,054 INFO L124 PetriNetUnfolderBase]: 13032/17999 cut-off events. [2024-06-21 17:00:31,055 INFO L125 PetriNetUnfolderBase]: For 589269/589274 co-relation queries the response was YES. [2024-06-21 17:00:31,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123059 conditions, 17999 events. 13032/17999 cut-off events. For 589269/589274 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 96969 event pairs, 5141 based on Foata normal form. 12/18005 useless extension candidates. Maximal degree in co-relation 122997. Up to 17233 conditions per place. [2024-06-21 17:00:31,231 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 186 selfloop transitions, 57 changer transitions 0/248 dead transitions. [2024-06-21 17:00:31,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 248 transitions, 3173 flow [2024-06-21 17:00:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 17:00:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 17:00:31,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-21 17:00:31,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484593837535014 [2024-06-21 17:00:31,233 INFO L175 Difference]: Start difference. First operand has 143 places, 203 transitions, 2231 flow. Second operand 7 states and 173 transitions. [2024-06-21 17:00:31,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 248 transitions, 3173 flow [2024-06-21 17:00:31,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 248 transitions, 3023 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-21 17:00:31,659 INFO L231 Difference]: Finished difference. Result has 147 places, 213 transitions, 2377 flow [2024-06-21 17:00:31,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2081, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2377, PETRI_PLACES=147, PETRI_TRANSITIONS=213} [2024-06-21 17:00:31,660 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2024-06-21 17:00:31,660 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 213 transitions, 2377 flow [2024-06-21 17:00:31,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:31,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 17:00:31,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 17:00:31,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 17:00:31,661 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 17:00:31,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 17:00:31,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2034169893, now seen corresponding path program 4 times [2024-06-21 17:00:31,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 17:00:31,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758519596] [2024-06-21 17:00:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 17:00:31,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 17:00:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 17:00:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 17:00:33,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 17:00:33,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758519596] [2024-06-21 17:00:33,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758519596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 17:00:33,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 17:00:33,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 17:00:33,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730263929] [2024-06-21 17:00:33,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 17:00:33,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 17:00:33,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 17:00:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 17:00:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 17:00:33,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-21 17:00:33,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 213 transitions, 2377 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 17:00:33,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 17:00:33,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-21 17:00:33,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand